Jin-Hyuk Chun's research while affiliated with Chungnam National University and other places

Publications (37)

Article
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Soil carbon is an important factor in the process of mitigating climate change and solving greenhouse gas problems. However, the previous technology for soil carbon content analysis required a lot of labor, time, and expensive equipment (i.e. an elemental analyzer). In this study, the disadvantages of previous analysis method were secured by using...
Article
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A quick, accurate and cost-effective method for estimating total soil carbon is necessary for monitoring its levels due to its environmentally and agronomically irreplaceable importance. There are several impediments to both laboratory analysis and spectroscopic sensor technology because the former is both expensive and time-consuming whereas the i...
Article
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The use of nitrogen fertilizers to enhance crop growth tends to increase every year. In addition, as eco-friendly agriculture is emphasized, organic fertilizers are preferred over inorganic fertilizers. However, since most of organic fertilizers in South Korea use imported ingredients, an alternative ingredients is needed. Biochar is an eco-friendl...
Article
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NH3 emitted into the atmosphere undergoes intricate chemical reactions to form fine particulate matter PM2.5. Nitrogen fertilizers are one of the major sources of gaseous ammonia. Recently, research into using biochar to lessen NH3 emissions from agricultural land has taken center stage and several studies have been executed in that regard. However...
Article
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Nitrogen plays an important role in plant growth as an essential nutrient. When crops are grown on biochar applied soil, their growth be positive affected. Biochar has been announced as a soil amendment to improve nitrogen (N) use efficiency. The present study aimed to investigate the combined effect of nitrogen fertilizer and biochar amendment on...
Article
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Nitrogen (N) is the most important element during the process of plant growth, and the quality of crops varies depending on the amount of nitrogen present. Most of the nitrogen is used for plant growth, but approximately 10-20% of Nitrogen is carried away by the wind in the form of NH 3. This volatilized NH 3 reacts with various oxides in the atmos...
Article
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BACKGROUND: Biochar has ability to reduce N loss, increase crop yield, and sequestrate carbon in the soil However, there is still limited study concerning the interactive effects of various biochars on NH3 loss and plant growth. This study, therefore, was conducted to investigate the NH4+ adsorption characteristics of biochar derived from rice and...
Article
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Nitrogen applied to soil is highly prone to leaching and volatilization leading to gaseous emissions of nitrous oxide (N 2 O) and ammonia (NH 3) which are of great environmental concern. Usage of biochar to reduce the discharge of nitrogen to the environment has attracted much interest in the recent past. Biochar is produced by pyrolyzing various b...
Article
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The amount of food waste generated in Republic of Korea has been increasing alongside an increasing population and booming economy as such, research on effective treatment and recycling is required. Food waste recycling is complicated by its inferior characteristics such as high levels of water and concern that its continuous application to farmlan...
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The present study aimed to investigate the contents of glucosinolates (GSLs) and carotenoids in eleven varieties of Chinese cabbage in relation to the expression level of the important transcription factors. MS and HPLC analysis identified the presence of 13 GSLs (progoitrin, sinigrin, glucoalyssin, gluconapoleiferin, gluconapin, glucocochlearin, g...
Article
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Glucosinolates (GSLs) are secondary metabolites that have anticarcinogenic activity and play defense roles in plants of the Brassicaceae family. MYB28 is known as a transcription factor that regulates aliphatic GSL biosynthesis in Arabidopsis thaliana. Brassicaceae plants have three orthologous copies of AtMYB28 derived from recent genome triplicat...
Article
Ca is material to used in Chinese cabbage (Brasica rapa L. spp. pekinensis). The variation of inorganic ions and GSLs in Chinese cabbage cultivated to control additional Ca contents in slaked lime. The additional fertilizer of slaked lime differ four grade that 0 g (Ca-0), 0.28 g (Ca-1), 0.56 g (Ca-2), 0.84 g (Ca-3) are week intervals with a total...
Article
The present study aimed to investigate the effects of drought stress on the accumulation of glucosinolates (GSLs) in the leaves of Kale cultivated in autumn and spring. HPLC analysis guided to identify seven GSLs including progoitrin, glucoraphanin, sinigrin, gluconapin, glucobrassicin, 4-methoxyglucobrassicin and neoglucobrasscin. Quantification o...
Article
BACKGROUND: Purpose of this research is HPLC analysis method development of lycopene in tomato. And then, three components of carotenoid in four kinds of tomatoes (general tomato, cherry tomato, red and orange date tomato) were compared with each other. METHODS AND RESULTS: Lycopene in tomato was extracted with hexane likes other carotenoid compone...
Article
Full-text available
Nitrogen (N), phosphorous (P) and potassium (K) are the most limiting factor in crop production. N often affects amino acid composition of protein and in turn its nutritional quality. In Brassica plants, abundant supply of N fertilizer decreases the relative proportion of glucosinolates (GSLs), thus reducing the biological and medical values of the...
Article
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This study aimed in the identification and quantification of phenolic compounds in different four varieties of rapeseeds (Brassica napus L.) using LC-MS and HPLC. LC-MS analysis guided to identify 12 phenolic compounds including sinapine, sinapine(4-O-8')guaiacyl, feruloyl choline(4-O-8') guaiacyl, kaempferol-3-O-sinapoyl-sophoroside-7-O-glucoside,...
Article
We profiled and quantified glucosinolates (GSLs), anthocyanins and free amino acids in thirty-seven inbred lines green and red cabbage. Analysis of these distinct cabbages revealed the presence of 8 GSLs, 13 anthocyanins and 12 free amino acids. GSL contents were varied among the different lines of cabbage. The maximum levels of glucoraphanin (14.9...
Article
Glucosinolate (GSL) and antioxidant activity in 62 varieties of Chinese cabbage (Brassica rapa L ssp. pekinensis) were determined by HPLC and DPPH, HRSA, and FRAP assays. Five aliphatic GSLs: progoitrin, sinigrin, glucoalyssin, gluconapin, and glucobrassicanapin; four indolyl GSLs: 4-hydroxyglucobrassicin, glucobrassicin, 4-methoxyglucobrassicin, a...
Article
The variation of glucosinolates (GSLs) in Chinese cabbage (`Sinhongssam`) (Brassica rapa L. spp. pekinensis) cultivated under lights to control plant growth conditions was evaluated at different development stages. Under experimental conditions in plant factory system, plant growth conditions including light, temperature, and nutrients were designe...
Article
Chinese cabbage is one of the most important leafy vegetables widely used in East Asian cuisines. The glucosinolate (GSL) accumulation and transcript levels of 7 transcription factors (Dof1.1, IQD1-1, MYB28, MYB29, MYB34, MYB51, and MYB122, and their isoforms) involved in the biosynthesis of aliphatic and indolic glucosinolates (GSLs) were analyzed...
Article
Full-text available
Lights are very important source of photosynthesis for plant growth and development. Blue and red lights among visible regions are the most useful for the photosynthesis. Recent advancements of light-emitting diodes (LEDs) technologies provide abundant opportunities to study the relationship between plant metabolites and different light sources. Th...
Article
We profiled and quantified glucosinolates (GSLs), anthocyanins, free amino acids, and vitamin C metabolites in forty-five lines of green and red cabbages. Analysis of these distinct cabbages revealed the presence of 11 GSLs, 13 anthocyanins, 22 free amino acids, and vitamin C. GSL contents were varied amongst the different lines of cabbage. The tot...
Article
BACKGROUND: This study was performed for the identification and quantification of glucosinolate (GSL) contents in seven varieties of rapeseed (Brassica napus L.) sprouts cultivated under dark and light conditions. METHODS AND RESULTS: Crude glucosinolates (GSLs) were desulfated by treating with aryl sulfatase and purified using diethylaminoethyl se...
Article
Glucosinolate (GSL) contents in five varieties and eleven lines of rocket salad (Eruca sativa L.) were quantified using HPLC-UV at 227 nm. Eleven GSLs including five aliphatic (glucoraphanin, glucothiobeinin, glucobrassicanapin, glucoerucin, and dimeric 4-mercaptobutyl GSL), two indolyl (glucobrassicin and 4-methoxyglucobrassicin), one aromatic (gl...
Article
Full-text available
ABSTRACT Three anthocyanins (cyanidin 3-diglucoside, cya- nidin 3-sambubioside and cyanidin 3-glucoside) together with eleven known alkaloids (lycorici- dine, hipppeastrine, O-Demethyllycoramin, lyco- ricidinol, galanthine, lycorine, lycorenine, lyco-ramine, galanthamine, homolycorine and preta- zettine) were identified in the flower and bulb of Ly...

Citations

... 최근 이를 보완하기 위한 분광학적 분석 방식이 개발되었으나 이 또한 전문적인 장비 가 필요하며, 비용이 많이 들고, 사용 방법이 복잡하다는 한계점을 가지고 있다 (Kim and Hong, 2002;Angelopoulou et al., 2020;Yang et al., 2021). 이러한 상황에서 최근 스마트폰의 보급 및 사용량 증가와 함께 스마트폰 사진의 품질 이 향상되면서 스마트폰의 사진과 토양 색의 관계를 기반으로 토양 내 탄소 함량을 예측하는 방식과 관련된 연구가 활 발하게 진행되고 있다 (Moritsuka et al., 2014;Vodyanitskii and Savichev, 2017;Yang et al., 2021;Yoo et al., 2021;Park and Choi, 2022;Sonn et al., 2022). ...
... The surface of biochar has abundant negative charges and a high charge density, resulting in the absorption and attachment of polar or non-polar organic compounds and inorganic ions, such as NH 4 + -and NO 3 − -in water, soil, and sediment [7,8]. Therefore, the application of biochar in farmland improves soil quality and carbon fixation, reduces the contents of nitrogen and phosphorus, and improves crop yield [9,10]. Biochar is made by the carbonization of agricultural wastes, and its nutrient content is low; thus, its application alone is insufficient to meet the needs of the test field was measured; its pH was 5.74, the soil organic matter (SOM) content was 44.58 g kg −1 , the total nitrogen (TN) was 0.52 g kg −1 , and the available phosphorus (AP) and available potassium (AK) contents were 30.31 mg kg −1 and 107.49 mg kg −1 , respectively. ...
... Biochar is a carbon-rich substance manufactured by pyrolysis of biomass and organic materials (e.g., rice husk, maize stalk, and cattle manure) under the oxygen-limited conditions (Martin et al., 2015;Oh et al., 2017;Lee et al., 2019;Kang et al., 2021b). Biochar has led multiple note because of abundant surface functional groups, intensive adsorption capacity, abundant porosity, and high levels of carbon sequestration (Lehmann and Joseph, 2015;Kang et al., 2021c). Several researches have shown that the utilization of biochar to the soil may improve soil aeration and structure, raise soil pH, enhance water and nutrient availability of crop, and alter the soil microbial community, thus promoting growth and yield of plant (Woo, 2013;Lee et al., 2018;Wu et al., 2020). ...
... As a new way of recycling various biomass and organic wastes in agriculture sector to the soil, biochar has a direct and indirect effect on NH 3 emission on the soil (Shi et al., 2019). Biochar is a carbon-rich substance manufactured by pyrolysis of biomass and organic materials (e.g., rice husk, maize stalk, and cattle manure) under the oxygen-limited conditions (Martin et al., 2015;Oh et al., 2017;Lee et al., 2019;Kang et al., 2021b). Biochar has led multiple note because of abundant surface functional groups, intensive adsorption capacity, abundant porosity, and high levels of carbon sequestration (Lehmann and Joseph, 2015;Kang et al., 2021c). ...
... N fertilizers applied to the soil surface are the major pathway for losses of N such as ammonia (NH 3 ), and approximately 11.0 Tg yr À1 estimates to arise the form of NH 3 (Beusen et al., 2008;Kang et al., 2022). The lost NH 3 acts as a main source of the nitrous oxide (N 2 O) and generates secondary particulate matter called PM2.5 (Park et al., 2020;Kang et al., 2021a). In addition, emitted NH 3 indirectly effects to biodiversity deterioration, water eutrophication, and air pollution (Fungo et al., 2019). ...
... Rapeseed flowers could be used as infused tea [257], and the pollens could be eaten because they are beneficial for the immune system to fight against diseases such as cancer. This could be explained by the presence of steroids in pollen, which could affect cancer cells' viability, notably in the prostate [258][259][260]. ...
... 나타낸다 [3,4]. 염 피해는 주로 수분 포텐셜 감소에 따른 수 분 흡수 저해와 특정 이온의 체내 축적에 의한 독성에 의해 발생한다 [5,6]. 따라서 간척지에서는 염 피해에 강한 내염성 작물을 재배할 필요가 있다. ...
... Cabbage belongs to the C genome and has rich nutritional value. Glucosinolates (GSLs) are one of the major secondary metabolites that are highly recommended in the human diet (Park et al., 2017). It contains many physiologically active substances that exhibit antioxidant and anticancer properties (Fenwick et al., 1983;Van Poppel et al., 1999). ...
... The accumulation of health-promoting bioactive compounds has been related to the application of biotic and abiotic stresses (i.e., wounding, UV radiation, and exogenous phytohormones) in fruits and vegetables through the generation of stress-signaling molecules, and the expression of genes implicated in the secondary metabolism of the plant [7]. Abiotic stresses reported in kale to induce the biosynthesis of glucosinolates, as well as phenolic and carotenoid biosynthesis pathways, include UVA and UVB radiation [8][9][10][11], drought [12,13], sulfur (S) [14,15], selenium (Se) [16], sodium chloride [16][17][18], low and high temperatures [19][20][21][22], and methyl jasmonate (MeJA) [23][24][25]. ...
... acephala. Among the carotenoids, zeaxanthin is affected by water stress in this variety that grows in Korea (Lee et al. 2017). In the same cauliflower species, seed origin has been found unaffected the pigment composition (Šamec et al. 2019). ...