• Research Article

    Characterization of Genes Related to Cirsimaritin Biosynthesis From Cirsium pendulum Fisch
    Seungki Lee, Nam-Il Park, Yeri Park, Kyong-Cheul Park, Beom-Soon Choi, Nam-Soo Kim, Ik-Young Choi
    Cirsium setidens Nakai and C. pendulum Fisch are Korean endemic thistle plants. Cirsimaritin is a major biocompound present in the genus Cirsium … + READ MORE
    Cirsium setidens Nakai and C. pendulum Fisch are Korean endemic thistle plants. Cirsimaritin is a major biocompound present in the genus Cirsium. We quantified cirsimaritin from the leaves of C. setidens Nakai and the stems and flowers of C. pendulum Fisch. Genes encoding the biosynthesis of cirsimaritin were identified from the transcriptomes of C. setidens Nakai. Gene Ontology analysis of the transcriptomes revealed that 5,000 transcripts were classified in the molecular function categories of cyclic compound binding proteins, transferase activity proteins, and heterocyclic compound binding proteins. More than 10,000 transcripts were identified in the biological process categories of organic metabolic process, primary metabolic process, cellular metabolic process, and biosynthetic process. Because chalcone synthase (CHS) and chalcone isomerase (CHI) are key enzymes in flavonoid biosynthesis, detailed phylogenetic and sequence analyses were carried out for these two enzymes. The phylogenetic analysis revealed that the CHS and CHI proteins of C. setidens were closely related to the CHS and CHI proteins of the artichoke thistle, Cynara carducunlus. - COLLAPSE
    31 December 2023
  • Research Article

    Study on the Effect of Deep Seawater Salt on Biological Activities and Immune Function
    Se-gye Shin, Yoon-Hee Choi
    In this study, we investigated the potential health effects of deep seawater salt (DS) compared to those of solar-dried salt, focusing on … + READ MORE
    In this study, we investigated the potential health effects of deep seawater salt (DS) compared to those of solar-dried salt, focusing on its anti-inflammatory properties. We found that the DS had a higher pH and reduction potential and contained more OH groups than the solar-dried salt. Additionally, the analysis of DS using ICP-MS revealed that it had the highest percentage of calcium (Ca) % and magnesium (Mg) % contents among the minerals examined. We also examined the impact of deep-seawater salt on nitric oxide (NO) production and the expression of pro-inflammatory mediators, such as inducible nitric oxide synthase (iNOS) and cyclooxygenase 2 (COX-2). DS decreases NO production and increases the expression of iNOS and COX-2, indicating its potential anti-inflammatory effects. These results demonstrated the potential anti-inflammatory and immune-enhancing effects of deep-seawater salts. These effects were attributed to reduced NO production and increased iNOS and COX-2 expression. Various minerals in deep seawater, particularly those with high calcium concentrations, are believed to be responsible for these effects. In addition, components such as K are thought to contribute to the observed outcomes. Further research into the interactions between deep-seawater salts and other components is expected to facilitate the development of excellent salt products. - COLLAPSE
    31 December 2023
  • Research Article

    Effect of Organic Fertilizers and Plant Growth-Promoting Microorganisms on Lettuce Growth

    유기질 비료와 식물 생장촉진 미생물의 혼합 비율별 상추의 생육에 미치는 영향

    Ki Byung Park, In Kyu Lee, Saeyoull Cho

    박기병, 이인규, 조세열

    This study aimed to develop organic fertilizers that are more effective than existing ones via mixing plant growth-promoting microorganisms with them. The … + READ MORE
    This study aimed to develop organic fertilizers that are more effective than existing ones via mixing plant growth-promoting microorganisms with them. The TB B1-B5 (Bacillus licheniformis) strain was isolated from the livestock composting process. Lettuce seed germination experiments and lettuce growth promotion tests were conducted with other plant growth-promoting microorganisms. The TB B1-B5 strain showed a superior germination promotion effect compared to other growth-promoting microorganisms and promoted lettuce growth in pot experiments. To mix organic fertilizers and the selected TB B1-B5 strains, experiments were conducted for each ratio of lettuce and organic fertilizers. Growth was excellent in the treatment with 1% organic fertilizers. In addition, the mixing ratio of 1% organic fertilizers and 5% TB B1-B5 strains promoted lettuce growth. Based on the results of this experiment, the optimal ratio of organic fertilizer and TB B1-B5 strains was confirmed; adding a mixture of 1% organic fertilizers and 5% TB B1-B5 strains was found to be more effective on plant growth than the input. The results of this study suggest the possibility of developing organic fertilizers that are superior to existing organic fertilizers and are believed to be an indicator for sustainable and eco-friendly agriculture practices in the future. - COLLAPSE
    31 December 2023
  • Research Article

    Detection and Identification of Outliers in Prices: The Case of the Philippine Pork Meat Market
    Jennifer Hinlo, Yoonsuk Lee
    It is important to identify significant shocks affecting pork prices to understand the Philippine pork market. Some of these shocks affect the … + READ MORE
    It is important to identify significant shocks affecting pork prices to understand the Philippine pork market. Some of these shocks affect the market prices temporarily, and others affect the market prices permanently. An autoregressive integrated moving average (ARIMA) with an outlier model was utilized to investigate such shocks in the pork market. This study used farmgate prices for hogs from January 2014 to December 2020 and retail prices for lean meat and meat with bone from January 1990 to January 2021. The study found permanent and temporary shocks in the specific time for farmgate prices, lean meat prices, and meat with bone prices. Such outliers were consistent to the outbreaks of foot-and-mouth-disease (FMD), African swine fever (ASF), and the COVID-19 pandemic. The stakeholders and industry players in the Philippine pork market should work closely to mitigate the effects of future outliers on monthly prices in the future. - COLLAPSE
    31 December 2023
  • Research Article

    Physicochemical Properties of Biochar Modified with Deep-Sea Water and Phosphate Adsorption Efficiency in Aqueous Solution

    해양심층수로 개질한 바이오차의 물리화학적 특성과 수용액 중 인 흡착 효율

    Won Seok Jang, Taehui Yang, Ji-Won Ham, Seong-Gu Heo, Se-Jin Oh

    장원석, 양태희, 함지원, 허성구, 오세진

    Recently, biomass conversion of by-products into an eco-friendly bio-sorbent such as biochar has been recognized as a promising product to maintain or … + READ MORE
    Recently, biomass conversion of by-products into an eco-friendly bio-sorbent such as biochar has been recognized as a promising product to maintain or increase soil productivity, reduce nutrient losses, and improve water purification in the ecosystem. In this study, four different types of biochar pyrolyzed at 500°C (RH: rice husk, BS: bean straw, PS: potato stem, RPS: red pepper stem) were chemically modified through two different methods (RW: raw deep sea water, CW: concentrated deep sea water). Changes in the physicochemical (surface area, elemental compositions, functional group) and morphological (SEM) properties of the modified biochar were measured, and the phosphate adsorption capacity in an aqueous solution was compared and evaluated. The improvements in the biochar properties varied for different feedstock and modification methods. In particular, the surface area of RH was the largest compared to other biochar, and CW modification caused substantial changes in the surface area and functional groups. The adsorption quantities of phosphate by modified biochar were 0.136 and 0.164 mg/g for RH_RW and RH_CW, respectively, and their corresponding adsorption quantities were 0.34 and 0.46 times higher than that of RH. Overall, it was determined that chemically modified biochar using deep sea water is suitable for removing phosphate in an aqueous condition. - COLLAPSE
    31 December 2023
  • Research Article

    Analyzing Impacts of Climate Change on Regional Fruit Production

    기후변화가 지역 과수 생산에 미치는 영향 분석

    Euijune Kim, Min Jiang, Dongyeong Jin

    김의준, 지앙민, 진동영

    This study analyzed the effects of climate change on apple and pear production. The fruit production function was estimated with spatial econometric … + READ MORE
    This study analyzed the effects of climate change on apple and pear production. The fruit production function was estimated with spatial econometric models. The regional production changes in 2040 according to climate change scenarios were simulated based on the spatial error model. First, the production of apples and pears will decrease due to climate change, with apples in Gyeongbuk and pears in Chungnam expected to experience the largest declines. Second, the production of apples and pears will decrease by 4.7 times and 2.0 times when temperature and precipitation or sunshine duration changes, respectively, are considered compared to when only temperature is considered an independent variable in the simulation model. Finally, production losses of 70.934%-97.048% and 90.984%-98.595% are expected for apples and pears, respectively, when the greenhouse gas (GHG) reduction policy was implemented compared to that without the GHG reduction policy. This study is expected to contribute to providing references for the local government to implement GHG reduction strategies and cope with the reduction of fruit production due to climate change. - COLLAPSE
    31 December 2023
  • Research Article

    Factors Affecting Consumer’s Online Purchasing of Non-Timber Forest Products

    임산물의 온라인 구매 결정요인 분석

    Hogun Chong, Donguk Kim, Seong-Hwan Song, Jae Bong Chang

    정호근, 김동욱, 송성환, 장재봉

    The rapid change and the mature development of online retail channels provide consumers with multiple choices. With the prosperity of the online … + READ MORE
    The rapid change and the mature development of online retail channels provide consumers with multiple choices. With the prosperity of the online market, agricultural products and food in the online market also increased significantly, but little is known about consumers’ purchasing behavior for non-timber forest products in the online market. A nationwide survey was conducted among 1,000 individuals to determine the factors influencing five non-timber forest products (chestnut, jujube, shitake mushroom, Codonopsis lanceolata, and persimmon) online purchasing decisions. Respondents were asked to answer questions about their retail shopping behavior, including purchase frequency, main purchase channels, purchase value, and online shopping experience. Our results suggest that consumers have different purchasing patterns for each non-timber forest product. The factors influencing consumers’ online purchases were studied using a binary choice model. We also found that the factors affecting consumers’ online purchasing experience differed among non-timber forest products. - COLLAPSE
    31 December 2023
  • Research Article

    A Study on the Sustainable Development Strategy of Research Farms at Kangwon National University

    강원대학교 부속농장의 지속가능한 발전전략에 관한 연구

    So Young Lee, Yong Kwang Shin, Jaechang Joo

    이소영, 신용광, 주재창

    The primary purpose is to develop indicators for evaluating the competitiveness of Kangwon National University’s farm by function and growth stage of … + READ MORE
    The primary purpose is to develop indicators for evaluating the competitiveness of Kangwon National University’s farm by function and growth stage of the affiliated farm. A survey with experts was done to evaluate the importance of competitiveness indicators. The concept of farm competitiveness and setting indicators was done before using the stratification analysis process (AHP). The result indicates the necessity of introducing digital technology-based smart farms and vertical plants to meet the present requirements. Moreover, there is a need to prepare curricular and extracurricular programs that can utilize the facilities once introduced. Second, an incentive system is necessary to facilitate research and projects continuously at affiliated farms. Third, as a long-term approach, it is necessary to establish a strategy to build an industry-academia-research cooperation cluster (tentative name, ‘Inno Campus Farm’) to prepare for future agriculture. - COLLAPSE
    31 December 2023
  • Research Article

    Impact of the Boycott of Japanese Products on the Korean Beer Market
    Jeong Hun Ji, Sang Hyeon Lee
    This study aimed to estimate the impact of the boycott of Japanese products on the Korean beer market using Regression Discontinuity (RD) … + READ MORE
    This study aimed to estimate the impact of the boycott of Japanese products on the Korean beer market using Regression Discontinuity (RD) designs. The boycott decreased the consumption of Japanese beer but increased that of American and Belgian beers. In addition, it increased the unit prices of Japanese, Korean, and Dutch beers while decreasing that of American and Belgian beers. The increase in the consumption of American and Belgian beers during the boycott could have been influenced by the lowering of the prices at a time concomitant with the beginning of the boycott. These results highlight the importance of appropriate pricing in response to market changes. - COLLAPSE
    31 December 2023
  • Research Article

    Impact of Providing Carbon-Neutral Policy Information on the Willingness to Pay for Low-Carbon Salad

    탄소중립정책 정보제공이 저탄소샐러드 지불의사금액에 미치는 영향

    Jung-woo Suh, Su-bin Kim, Chan-soo Kim, Sang Hyeon Lee

    서정우, 김수빈, 김찬수, 이상현

    This study assessed the effect of consumer perceptions of carbon-neutral policies on their willingness to pay (WTP) for “low-carbon certified salads” and … + READ MORE
    This study assessed the effect of consumer perceptions of carbon-neutral policies on their willingness to pay (WTP) for “low-carbon certified salads” and the potential change in WTP after targeted education. Using conjoint analysis, we gauged the average WTP for salad attributes. After educating consumers on carbon-neutral measures, the average WTP surged by 811 won, highlighting the efficacy of education in policy comprehension. The profit margin for these salads stood at 1,653 won, indicating potential profitability through informed education. Upon segmenting respondents based on their carbon-neutrality awareness and carbon-reducing practices, high-awareness groups demonstrated a significant WTP increase; however, the low-awareness cohort showed negligible change, emphasizing the need for diversified education approaches. - COLLAPSE
    31 December 2023
  • Research Article

    Development Strategies for Pavement Management Systems in Gangwon-do

    강원도 포장관리시스템 구축 방안

    Hey Kyo Lee, Kyoung Jae Lim

    이혜교, 임경재

    This study aimed proposes application methods that serve as technical alternatives for a Pavement Management System (PMS) that reflects road management characteristics … + READ MORE
    This study aimed proposes application methods that serve as technical alternatives for a Pavement Management System (PMS) that reflects road management characteristics in Gangwon-do to achieve provincial road PMS. After the rapid growth of Korean road facilities in the 1970s and 1980s, the need for a maintenance budget has been emphasized due to aging infrastructure. Consequently, a proactive approach for pavement preservation, the PMS, was introduced. However, local governments managing provincial roads are experiencing difficulties in constructing and operating the PMS. To resolve these issues, this study analyzed the composition and operation methods of the PMS in Seoul City and National roads. Using these results, we suggested proposed developed solutions to challenges such as database construction, professional manpower and organization, budget and manpower shortages, and the absence of decision support systems that fail to reflect local characteristics budget and manpower. These results can assist local autonomous entities, such as Gangwon-do, in performing efficient road maintenance with limited budget and manpower. Furthermore, it the proposed system construction method resolves the existing PMS problems and enhances accessibility by utilizing the latest ICT technology, aiming which will contribute to establishing a future-oriented local road management system. - COLLAPSE
    31 December 2023
  • Research Article

    Evaluation of the Effects of an Eco-Friendly Insecticide (KEFAMA8) on Gypsy Moth Larvae

    해충관리용 유기농업자재(KEFAMA8)의 매미나방 유충에 대한 방제 효능 평가

    Young Don Lee, Seon Hee Choi, In Ahn, Hyuck Soo Kim, Jin Ho Joo

    이영돈, 최선희, 안인, 김혁수, 주진호

    The acceleration of global warming and the rise in average winter temperatures have resulted in the outbreak of pests such as gypsy … + READ MORE
    The acceleration of global warming and the rise in average winter temperatures have resulted in the outbreak of pests such as gypsy moth (Lymantria dispar). In this study, we evaluated a natural plant extract for controlling the larvae of gypsy moth using immersion and foliar application methods. The eco-friendly insecticide (KEFAMA8) exhibited a 100% control efficacy when applied at ratios of 200:1 and 500:1 in the immersion method, demonstrating its insecticidal effect on gypsy moth larvae. Foliar application of KEFAMA8 also showed a 100% control rate, highlighting its excellent insecticidal efficacy in both immersion and foliar application methods. Therefore, this compound is promising as a natural insecticide for effectively managing the outbreak of pests like gypsy moths. - COLLAPSE
    31 December 2023
  • Research Article

    Studies on Fungal Isolates from Artificial Environments of Korean National Arboretum Tropical Exhibition that are Pathogenic to Humans

    국립수목원 열대식물원 인공 환경내 미생물(곰팡이) 분석 및 유해성 조사

    Sang Woo Kim, Tai Hyeon Ahn, Hyun Jin Kim, Hye young Jin, Jang Woo Park, Mi Hye Kim, Mi Jeong Kim, Mi-Ri Park

    김상우, 안태현, 김현진, 진혜영, 박장우, 김미혜, 김미정, 박미리

    This study was conducted to investigate the types and harmfulness of fungal strains through investigation of biological harmful factors. Fungi were isolated … + READ MORE
    This study was conducted to investigate the types and harmfulness of fungal strains through investigation of biological harmful factors. Fungi were isolated from aerosols, walls, windows, and soil samples in the tropical plant exhibition hall of the Korean National Arboretum Tropical Exhibition. Fungal isolates were identified using internal transcribed spacer (ITS) sequence analysis through Macrogen, Korea. In total, 74 fungal isolates were isolated. Among them, 9 fungal isolates were human pathogenic, 12 were phytopathogenic, and 4 were beneficial. Penicillium sp. was the most identified fungal isolate among the isolated fungal isolates. Additionally, Chaetomium spp., Cladosporium spp., and Aspergillus spp were also discovered, which are reported as harmful molds causing allergic reactions such as asthma and aspergillosis in humans. Moreover, these harmful molds have severe effects on the elderly and children with weak immunity. Studies regarding the development of a database of fungi beneficial and harmful to plants and humans are necessary. This study was conducted to gather inputs to build such a database containing holistic information and a brief categorization of fungal isolates and to add useful insights in the analysis of beneficial and harmful fungal isolates from different sources. - COLLAPSE
    31 December 2023
  • Research Article

    Comparison of Environmental and Photosynthetic Characteristic Factors between Growing Locations in Seedless Watermelon Greenhouse Hydroponic Cultivation Using a Pillar of Hanger System

    행거형 지주를 활용한 씨 없는 수박 수경재배에서 온실 내 생육 위치별 환경과 광합성 특성 비교

    Seung Mi Woo, Ho Cheol Kim

    우승미, 김호철

    This study was conducted to compare differences in the environmental and photosynthetic characteristics between growing locations in hydroponic cultivation of seedless watermelon … + READ MORE
    This study was conducted to compare differences in the environmental and photosynthetic characteristics between growing locations in hydroponic cultivation of seedless watermelon (Citrullus lanatus) ‘Minimi’ in a greenhouse using pillar of hanger-type. The type of greenhouse was a single-span greenhouse (width:height = 6.0:3.3 m), and growing locations were the front (south, SL) and back (north, NL) in a greenhouse with a north-south direction. During the study period (early October to late November), daily average solar radiation (PPFD) inside the greenhouse showed a much larger change than the daily average air temperature and peaked from 12:00 to 13:00, while the air temperature did not change much from 11:00 to 13:00. The solar radiation (PPFD) at the top of the plants inside the greenhouse was significantly higher in SL (1.26 times) than in NL, but R:FR showed no difference. Plant leaf temperature and light intensity showed significant correlations with stomatal conductance, transpiration rate, and vapor pressure deficit at both locations. These correlations were higher in NL with lower solar radiation and later exposure to higher light intensities than in SL. - COLLAPSE
    31 December 2023
  • Research Article

    Antioxidative Activities and Whitening Effects of Angelica Dahurica Extract

    백지 추출물의 항산화 및 미백 효능에 관한 연구

    Eon Hwan Shin, Young Wook Kim

    신언환, 김영욱

    This study investigated the antioxidative activity and whitening efficacy of the Angelica dahurica 70% ethanol extract (ADE). The total polyphenol and flavonoid … + READ MORE
    This study investigated the antioxidative activity and whitening efficacy of the Angelica dahurica 70% ethanol extract (ADE). The total polyphenol and flavonoid contents of ADE were 22.94 mg GAE/g and 18.47 mg QE/g, respectively. The ADE electron donating ability at 1,000 µg/mL was 22.6 %. The ABTS radical scavenging activity and ADE reducing power at 1,000 µg/mL were 25.32% and 0.59, respectively. ADE at 1,000 µg/mL reduced intracellular tyrosinase activity by 52.36%. Collectively, the results of this study suggest that ADE effectively inhibits tyrosinase activity and that Angelica dahurica could be used as a whitening agent and an antioxidant resource for functional foodstuffs, cosmetics, and industrial materials. - COLLAPSE
    31 December 2023
  • Research Article

    Impact of Fluctuations in the Prices of Imported Grains on the Consumer Prices of Processed Foods in Korea

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    Taeyang Kim, Sanghyeon Lee
    Recently, grain prices have fluctuated significantly worldwide, owing to the coronavirus disease 2019 pandemic and ongoing Russia–Ukraine War crisis. These fluctuations in … + READ MORE
    Recently, grain prices have fluctuated significantly worldwide, owing to the coronavirus disease 2019 pandemic and ongoing Russia–Ukraine War crisis. These fluctuations in the prices of food grains may affect the food prices of importing countries differently, depending on their size and location. In this study, we analyzed the effects (both short- and long-term) of the asymmetric trend of imported grain prices on consumer prices of processed foods in Korea. We conducted a nonlinear autoregressive distributed lag analysis using monthly data for the last 10 years (from July 2013 to July 2023) to address two major questions. First, we examined the effects of fluctuations in the prices of imported grains on the consumer prices of processed foods in Korea. Second, the impact of this price transfer phenomenon on the prices of bread and snacks was analyzed, focusing on fluctuations in the price of wheat (a major ingredient constituting a high proportion of imported food grains). We found that the prices of imported grains exhibited an asymmetry in the long run, and the prices of Korean processed foods increased only during an increase in imported food grain prices. In addition, it was confirmed that the prices of bread and snacks were asymmetrical over the long term in response to fluctuations in the price of wheat. Based on our results, we suggest a policy direction and discuss the need for alternatives to stabilize the prices of processed foods. - COLLAPSE
    31 December 2023
  • Research Article

    A Study on the Current State of Conventional Cultivation System and Harvesting Practice in Summer Potato Major Producing Areas

    여름감자 주산지별 관행 재배양식 및 수확작업 현황에 대한 연구

    Yunjeong Yang, Jeonghun Kim, Moonkyeong Jang, Seungjun Kim, Kwangmo Kim, Juseok Nam

    양윤정, 김정훈, 장문경, 김승준, 김광모, 남주석

    In this study, we investigated the conventional summer potato cultivation system and harvesting practice in Jeongseon-gun and Pyeongchang-gun, Gangwon-do, which are the … + READ MORE
    In this study, we investigated the conventional summer potato cultivation system and harvesting practice in Jeongseon-gun and Pyeongchang-gun, Gangwon-do, which are the major producing areas to improve the conventional summer potato cultivation model. The width of ridges and furrows and the distance between plants and rows were measured during the cultivation usage survey. The yield of summer potatoes; rates of marketable potatoes, digging damage, and digging loss; work efficiency; and field efficiency were investigated in the harvesting practice survey. Results of cultivation usage survey showed that the cultivation system in Jeongseon-gun and Pyeongchang-gun were measured to be the same, but the range of slope angle was slightly higher in Jeongseon-gun than in Pyeongchang-gun. Results of the harvesting practice survey showed that the rate of marketable potatoes was lower in Jeongseon-gun than in Pyeongchang-gun, whereas the rates of digging damage and digging loss were higher in Jeongseon-gun than in Pyeongchang-gun. This study can be used as a basic data for research on the improvement of summer potato cultivation model. - COLLAPSE
    31 December 2023
  • Research Article

    Evaluation of Soil Quality under Laponite Hydrogel Application in Lettuce (Lactuca sativa L.) Cultivation

    라포나이트 하이드로겔 적용이 토양의 질 및 상추(Lactuca sativa L.) 생육에 미치는 영향 평가

    Chan Gyu Lee, Hyeok Jin Yun, Byung Jun Park, Jun Gyu Lee, Yeon Ho Kim, Seok Soon Jeong, Jung Hwan Yoon, Hyuck Soo Kim

    이찬규, 윤혁진, 박병준, 이준규, 김연호, 정석순, 윤정환, 김혁수

    Climate change, one of humankind’s major challenges, has caused drought to become more frequent in recent years, and these drought conditions have … + READ MORE
    Climate change, one of humankind’s major challenges, has caused drought to become more frequent in recent years, and these drought conditions have negatively affected crop production by decreasing the availability of soil water to plants. Therefore, efficient soil moisture management is essential, and adding soil amendment is considered one of the best management practices. Recently, hydrogels have gained attention as potential soil amendments in agriculture because they can improve soil structure and water-holding capacity due to their hydrophilic properties. Hence, the current study was carried out to examine the effects of laponite-contained hydrogel (LHD) application on soil characteristics and lettuce yield under field conditions. The LHD was applied to upland soil at four application rates (0%, 0.25%, 0.5%, and 1% (w/w)), and lettuce was subsequently cultivated for seven weeks. Applying 1% hydrogel increased soil water content by 94% and decreased soil bulk density by 22%. Also, hydrogel applications significantly improved the soil’s biological properties, such as β-glucosidase, phosphatase dehydrogenase, colony-forming unit, and soil respiration. The highest dry-weight lettuce yield was observed from soil that received 1% hydrogel, which was attributed to improved soil physical and biological properties. Furthermore, it reduced the impact of drought stress, as evidenced by the reduced proline accumulation in lettuce. Thus, LHD can be used as a soil amendment in agriculture. - COLLAPSE
    31 December 2023
  • Research Article

    Improvement Effect of Aceriphyllum rossii Extract on Dextran Sodium Sulfate-induced Colitis

    DSS로 유도된 궤양성 대장염 모델에서의 돌단풍 추출물의 장 건강 개선효과

    Hee-Jun Kim, Bohye Kim, Mi-Ra Lee, Gye Chun Jo, Moonjin Ra, Yongjun Lee

    김희준, 김보혜, 이미라, 조계춘, 라문진, 이용준

    Inflammatory bowel disease (IBD) is a chronic and relapsing inflammatory disease of the intestine characterized by recurrent chronic inflammation and mucosal damage … + READ MORE
    Inflammatory bowel disease (IBD) is a chronic and relapsing inflammatory disease of the intestine characterized by recurrent chronic inflammation and mucosal damage in the gastrointestinal tract. Recent studies have demonstrated that Aceriphyllum rossii extract (ARE) contains abundant natural flavonoids and enhances the anticancer, antioxidant, and anti-inflammatory effects in various disease models. However, whether ARE has a protective effect against dextran sodium sulfate (DSS)-induced colitis remains unclear. In the present study, we investigated the effects of ARE treatment in a mouse model of colitis. Oral administration of DSS induced shortening of the colon and increased the disease activity index and histological damage. However, ARE treatment significantly attenuated IBD symptoms, such as weight loss, bloody stool, stool consistency, and histological damage in DSS-induced colitis. In addition, ARE treatment decreased colonic inflammatory cytokine (IL-6 and IL-22) levels. Collectively, these results suggest that ARE treatment can help improve colonic function and prevent IBD. - COLLAPSE
    31 December 2023
  • Research Article

    The Analysis of Functional Components and Physiological Activities in Different Parts of Korean and Chinese Deodeok (Codonopsis lanceolata)

    국내산과 중국산 더덕(Codonopsis lanceolata)의 부위별 기능성물질 및 생리활성 측정

    Yeri Park, Heewon Son, Hyoyoung Lee, Sujeong Heo, Jaeyoung Ko, Nam Il Park

    박예리, 손희원, 이효영, 허수정, 고재영, 박남일

    Deodeok is a crop widely distributed in Asia; its fresh or dried roots are used as medicine. It exhibits excellent antioxidant and … + READ MORE
    Deodeok is a crop widely distributed in Asia; its fresh or dried roots are used as medicine. It exhibits excellent antioxidant and antibacterial effects owing to the abundance of its functional components. Deodeok can be distinguished from ginseng using the marker compounds tangshenoside I and lobetyolin, abundant in deodeok; however, further research on this crop and its utilization is needed. In this study, we aim to measure the functional ingredients and physiological activities using the flesh and skin of Korean and Chinese deodeok samples and to use these basic data for the development of functional foods. A higher Tangshenoside I content was detected in the skin than in the flesh, with the highest concentration identified in Jeju Deodeok (302.07 µg/g) among Korean and Ji'an Deodeok (662.97 µg/g) among Chinese samples. Similarly, the skin exhibited higher lobetyolin content and five types of phenolic compounds than the flesh. The physiological assay revealed that the antioxidant activity increased with increasing total polyphenol content; a high antioxidant activity was detected in the skin. The skin of deodeok, collected in the sprout stage, can be effectively used. Additionally, during hydroponic cultivation of deodeok sprouts, an increase in the secondary metabolite content can be induced using a regulated source of artificial light. - COLLAPSE
    31 December 2023
  • Research Article

    Analysis of Characteristics of Agricultural Drought and Study of Response Strategies

    농업가뭄 특성 분석 및 대응 전략 연구

    Jongwon Do, Hyungjin Shin, Youngkyu Jin, Seulgi Lee, Heesung Lim, Hyeokjin Lim, Seonah Hwang, Won-Ho Nam, Changi Park

    도종원, 신형진, 진영규, 이슬기, 임희성, 임혁진, 황선아, 남원호, 박찬기

    The increased frequency of natural disasters has been attributed to abnormal climate conditions, with droughts notably causing significant damage. In particular, droughts … + READ MORE
    The increased frequency of natural disasters has been attributed to abnormal climate conditions, with droughts notably causing significant damage. In particular, droughts directly impact the agricultural sector. In recent years, the scale and frequency of damages caused by droughts in South Korea have increased. In 2018, a drought occurred during the crucial panicle formation stage of rice (July-August) due to below-average rainfall and heat waves. This led to a decrease in both the reservoir storage rate and soil moisture. The reservoir storage rate exhibited a decline from July to August, with approximately 300 reservoirs representing less than 50% of the average annual storage rate. This manifested in a two-phase curve which showed increases and decreases in June and August. Based on the rainfall in July, 107 regions experienced drought frequencies typically occurring once every 200 years or more. This resulted in damages such as dry rice paddies (2,153 ha) and withering field crops (20,254 ha). The Korea Rural Community Corporation minimized drought damage by promoting the smooth management of agricultural water supply through the installation of pumped storage reservoirs and direct input of maintenance costs. A comprehensive analysis of the 2018 drought reveals that agricultural water management is not standardized based on factors such as crop type, cultivation timing, and cultivation scale. Consequently, there is a demand for ongoing water management and the formulation of region-specific drought management measures. - COLLAPSE
    31 December 2023
  • Research Article

    Characterization of Bacteria Isolated from the Neungam Carbonate Hot Springs

    능암 탄산 온천에서 분리한 세균의 특성 분석

    Woo-Yang Jeong, Sang-Jae Lee, Yong-Jik Lee

    정우양, 이상재, 이용직

    In this study, the hot spring water of the Neungam Carbonate Hot Springs in Korea was used to isolate Bacillus strains using … + READ MORE
    In this study, the hot spring water of the Neungam Carbonate Hot Springs in Korea was used to isolate Bacillus strains using marine agar as the medium, and three strains were isolated through single colony isolation. The growth pH and temperature of the isolated strains and their growth potential in complex media were analyzed. Based on strain identification, three strains were confirmed to be members of the Bacillaceae family, but from different genera, and included Bacillus tequilensis, Cytobacillus oceanisediminis, and Caldibacillus hisashii. In addition, cultured media were tested for the ability of the strains to produce extracellular hydrolysis enzymes to determine whether the strains could be used in the cosmetics or food industry, and two strains were confirmed to exhibit extracellular protease activity. Finally, to optimize the medium composition for mass cultivation of the M510 strain, the ability to use various carbon sources was analyzed and 20 types of carbon sources that could be used for carbohydrate metabolism were confirmed. The results of this study can be used as basic research data to secure domestic genetic resources and optimize media for isolated strains. - COLLAPSE
    31 December 2023
  • Research Article

    Improvement Effects of Prunus Davidiana (Carrière) Franch. Extract on Ulcerative Colitis

    산복사나무 추출물의 궤양성 대장염증 완화 검증

    Bohye Kim, Hee-Jun Kim, Mi-Ra Lee, Gye Chun Jo, Moonjin Ra, Yongjun Lee

    김보혜, 김희준, 이미라, 조계춘, 라문진, 이용준

    Prunus Davidiana, known as wild peach, has been used as a medicinal material against various inflammatory diseases since ancient times and … + READ MORE
    Prunus Davidiana, known as wild peach, has been used as a medicinal material against various inflammatory diseases since ancient times and belongs to the family Rosaceae. This study aimed to investigate the effect of wild peach extract (WPE) on inflammatory bowel diseases IBD at two different doses (10 and 100 mg/kg). Colitis was induced in mice (C57BL/6) by administering 2.0% Dextran sodium sulfate (DSS) in drinking water for 5 days. WPE treatment significantly improved the disease activity index, addressing symptoms such as body weight loss, bloody stool, stool consistency, and colon shortening. Furthermore, the increased levels of myeloperoxidase and pro-inflammatory cytokines (IL-6 and IL-22) with the development of colitis following DSS administration were significantly decreased by WPE. Histological analysis with Hematoxylin & Eosin staining of the colon tissue suggested that WPE significantly reduced colon damage. Additionally, pro-inflammatory cytokine (IL-8) and reactive oxygen species levels were reduced in HT-29 cells. Based on these results, we suggest that P. davidiana can ameliorate DSS-induced colitis in a mouse model. Furthermore, we anticipate that P. davidiana could serve as an effective therapeutic candidate for the treatment of inflammatory bowel diseases. - COLLAPSE
    31 December 2023
  • Research Article

    Length–weight Relationship and Condition Factor of The Invasive Fish Species Brown Trout (Salmo trutta) in Soyang River

    소양강에 분포하는 생태계교란어종 브라운송어(Salmo trutta)의 성장도 및 비만도 분석

    Jaehoon Kim, Doupyo Hong, Jongjin Kim, Bumjun Kim, Hekap Kim, Jaeseok Choi

    김재훈, 홍두표, 김종진, 김범준, 김희갑, 최재석

    This study examined the habitat and settlement patterns of Brown Trout (Salmo trutta), designated as an ecosystem-disrupting species in 2022. … + READ MORE
    This study examined the habitat and settlement patterns of Brown Trout (Salmo trutta), designated as an ecosystem-disrupting species in 2022. A total of 348 individuals were captured from the Soyang River area in Chuncheon, Gangwon do, South Korea, which is a domestic habitat of Brown Trout. Monthly surveys were conducted from May 2022 to May 2023. Age structure analysis revealed that individuals with sizes ranging from 10 to 50 mm were classified as age 0 (0+), 40 to 90 mm as age 1, and 70 to 160 mm as age 2. The length–weight relationship did not exceed 3.00 in October and November 2022 and April 2023. The condition factor showed temporary poor growth, with negative (-) values in June, October, and November 2022 and April 2023. However, the overall length-weight relationship was 3.03, and the condition factor was positive (+), indicating good growth. - COLLAPSE
    31 December 2023
  • Research Article

    Distribution and Population Analysis of Pungitius Sinensis, an Endangered Species in the Soyang River

    소양강 내 멸종위기종 II급 가시고기(Pungitius Sinensis)의 분포와 개체군 분석

    Beomjun Kim, Jaehoon Kim, Jongjin Kim, Doupyo Hong, Hekap Kim, Jaeseok Choi

    김범준, 김재훈, 김종진, 홍두표, 김희갑, 최재석

    The purpose of this survey was to assess the population of Pungitius sinensis and develop strategies for the conservation and protection of … + READ MORE
    The purpose of this survey was to assess the population of Pungitius sinensis and develop strategies for the conservation and protection of this endangered species. In addition, the existing habitat of Pungitius sinensis. Fish fauna in the Soyang River were investigated thrice from May to November 2022. During these investigations, a total of 2,598 fish belonging to 11 families and 20 species were collected. Among them, Pungitius sinensis (2,522 individuals) was the dominant species, accounting for 97.07% of the total fish collected based on relative abundance. After measuring the length and weight, the distribution ranged from 13 to 80 mm in length, with an average length of 52.39 mm and a weight of 1.04 g. The analysis of the length-weight relationship and condition factor (K) revealed that both were slightly lower, with a length-weight relationship and condition factor of less than 3.0. However, values of 3.0 or higher and fluctuations in the condition factor (+) were observed at different times and locations, necessitating ongoing investigation. By analyzing the frequency distribution of total length, it was confirmed that the population of Pungitius sinensis has settled stably. The current year (0+), first year (1+), and second year (2+) were evenly distributed. - COLLAPSE
    31 December 2023