• Title/Summary/Keyword: Chive

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Effect of cooking methods on the phytosterol content in nine selected vegetables

  • Shin, Jung-Ah;Park, Jong-Min;Lee, Ki-Teak
    • Korean Journal of Agricultural Science
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    • v.43 no.1
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    • pp.87-99
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    • 2016
  • Phytosterol contents in nine vegetables such as paprika (red, yellow, and orange), kohlrabi, bamboo shoot, cherry tomato, cucumber, Chinese chive, and corn were analyzed by gas chromatography. Individual contents of ${\beta}$-sitosterol, campesterol, and stigmasterol in fresh and cooked vegetables (boiling, grilling, stir-frying, deep-frying, steaming, roasting, and microwaving) were determined and compared. Total phytosterol content of paprika, cucumber, Chinese chive and cherry tomato ranged from 23.19 to 46.51 mg/kg (0.002-0.005%) of fresh weight of raw vegetables. Total phytosterol content variation (%) was obtained as follows: [(the content of phytosterol after cooking) - (the content of phytosterol before cooking)] / (the content of phytosterol before cooking) ${\times}100$. Total phytosterol content was found to be high in raw kohlrabi at 138.99 mg/kg fw (0.01%), in corn at 302.86 mg/kg fw (0.03%), and in bamboo shoot at 443.15 mg/kg fw (0.04 %). Total phytosterol content variation (%) in orange paprika ranged from 27.5 to 267.3 while that in cherry tomato ranged from -11.0 to 337.5. Generally, high content variation of total phytosterol was found in stir-fried and deep-fried vegetables. Therefore, higher phytosterol levels were obtained from cooked vegetables than raw vegetables. We suggest that these data will be useful to investigate cooking methods for increased intake of phytosterols.

Chemical Compositions & Texture of Allium senescens (두메부추의 화학적 조성 및 조직감 특성)

  • 정미숙;이미순
    • Korean journal of food and cookery science
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    • v.17 no.1
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    • pp.60-64
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    • 2001
  • Chemical compositions and texture of Allium senescens that is one of Korean indigenous culinary herbs were analyzed. The contents of carbohydrate and calorie were higher than those of Chinese chive. Proline, glutamine, valine, leucine and threonine were the major total amino acids in white and green portions of Allium senescens leaves. Methionine and cysteine were identified in white and green portions of Allium senescens leaves. The values of sodium and iron in Allium senescens were lower than in Chinese chive. Trace amount of selenium was also detected in Allium senescens leaves. The C$_{20:5}$ and C$_{20:6}$ were identified in leaves of Allium senescens. As a result of Rheometer analysis and sensory evaluation, texture of Allium senescens was more tender than that of green portion of Chinese chive leaves.

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Identification and Characteristics of Mushrooms Grown with Vegetables Cultivated in the Greenhouse (온실 내 재배 채소와 함께 발생한 버섯의 동정 및 특성)

  • Seok, Soon Ja;Kim, Wan Gyu
    • The Korean Journal of Mycology
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    • v.41 no.4
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    • pp.212-217
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    • 2013
  • Unusual mushrooms were observed in the greenhouses of vegetables Chinese chive, cucumber, melon and Korean dandelion in four locations of Korea in 2012. The mushrooms usually grew with the vegetables cultivated on beds in the greenhouses. Occurrence aspects of the mushrooms in the greenhouses and effect of the mushrooms on growth and quality of the vegetables were investigated. Mushroom samples were collected from the beds in the greenhouses and identified based on their morphological characteristics. The mushroom samples collected from the greenhouse of Chinese chive were identified as Coprinus aokii, those from the greenhouse of cucumber as Cristinia eichleri and Coprinus sp., those from the greenhouse of melon as Leucocoprinus cretaceous, Panaeolus fimicola and Conocybe sp., and those from the greenhouse of Korean dandelion as Conocybe rickenii f. tetrasporique. Out of the seven mushrooms identified, L. cretaceus, C. rickenii and C. eichleri were first found in Korea. The investigation results revealed that the mushrooms were originated from compost or soil used in the beds, and showed that C. aokii caused sooty mold on leaves of Chinese chive, and C. rickenii f. tetrasporique hindered growth of Korean dandelion and caused sooty mold on leaves of the plant. The other mushrooms had no effect on growth and quality of the vegetables.

Analysis of Volatile Flavor Components from Allium senescens (두메부추의 휘발성 향기성분 분석)

  • 이미순;정미숙
    • Korean journal of food and cookery science
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    • v.17 no.1
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    • pp.55-59
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    • 2001
  • To investigate the usefulness of Allium senescens as a aromatic edible plant, volatile flavor components and flavor pattern were analyzed. Essential oils of fresh and freeze dried Allium senescens were extracted by SDE(simultaneous steam distillation and extraction) method using diethyl ether as solvent. And their volatile flavor components were analyzed by gas chromatography(GC) and gas chromatography-mass spectrometry (GC-MS). A total of 46 components, including 11 hydrocarbons, 9 aldehydes, 4 alcohols, 2 esters, 7 acids, 4 ketones and 9 sulfur containing compounds were identified in fresh Allium senescens. In freeze dried Allium senescens, 8 hydrocarbons, 5 aldehydes, 3 alcohols, 5 esters, 2 acids, 3 ketones and 4 sulfur containing compounds were identified. Volatile flavor patterns of Chinese chive and Allium senescens were compared using electronic nose. The score of first principal component was significantly different in Allium senescens and Chinese chive.

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Application of Practical Immobilizing Agents for Declining Heavy Metal (loid)s Accumulation by Agricultural Crop (Allium wakegi Araki)

  • Seo, Byoung-Hwan;Kim, Hyun-Uk;Lwin, Chaw Su;Kim, Hyuck Soo;Kim, Kwon-Rae
    • Korean Journal of Soil Science and Fertilizer
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    • v.50 no.4
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    • pp.226-234
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    • 2017
  • In order to reduce the accumulation of toxic metals (As, Cd and Pb) in the chives, various immobilizing agents such as a soil pH change-inducing immobilizing agent (lime), sorption agent (compost, spent mushroom compost), soil pH change and sorption agent (biochar) and, dissolved organic carbon (DOC) coagulator (gypsum) and uncontaminated soil were applied to the contaminated soils in isolation and in combination. Then chives were grown and determined for As, Cd and Pb concentrations accumulated in the edible part at harvest. The Cd and Pb concentrations of the chive plant grown in the contaminated soil (no treatment) exceeded the legislated Korean guideline values (Cd: $0.05mg\;kg^{-1}$, Pb $0.1mg\;kg^{-1}$) and As concentration ($21mg\;kg^{-1}$) was 1,000 times higher than chives plant grown in uncontaminated environment in Korea. Application of lime and gypsum significantly reduced As, Cd and Pb concentrations in all chives examined, due to the increased soil pH and decreased soil DOC. Also, application of combination treatments involving DOC coagulator such as gypsum together with lime decreased As, Cd and Pb concentrations from 21, 1.3 and $9.7mg\;kg^{-1}$ to 2.1, 0.1 and $1.1mg\;kg^{-1}$, respectively. Consequently, it was concluded that pH change-inducing immobilizing agent (lime) which was already well known and DOC coagulator such as gypsum could be used as a promising immobilizing agent for safer chives plant production.

Effects of Light-Quality Control on the Plant Growth in a Plant Factory System of Artificial Light Type (인공광 식물공장내 광질 제어가 작물생육에 미치는 영향)

  • Heo, Jeong-Wook;Baek, Jeong-Hyun
    • Korean Journal of Environmental Agriculture
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    • v.40 no.4
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    • pp.270-278
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    • 2021
  • BACKGROUND: Horticultural plant growth under field and/or greenhouse conditions is affected by the climate changes (e.g., temperature, humidity, and rainfall). Therefore investigation of hydroponics on field horticultural crops is necessary for year-round production of the plants regardless of external environment changes under plant factory system with artificial light sources. METHODS AND RESULTS: Common sage (Salvia plebeia), nasturtium (Tropaeolum majus), and hooker chive (Allium hookeri) plants were hydroponically culturing in the plant factory with blue-red-white LEDs (Light-Emitting Diodes) and fluorescent lights (FLs). Leaf numbers of common sage under mixture LED and FL treatments were 134% and 98% greater, respectively than those in the greenhouse condition. In hooker chives, unfolded leaf numbers were 35% greater under the artificial lights and leaf elongation was inhibited by the conventional sunlight compared to the artificial light treatments. Absorption pattern of NO3-N composition in hydroponic solution was not affected by the different light qualities. CONCLUSION(S): Plant factory system with different light qualities could be applied for fresh-leaf production of common sage, nasturtium, and hooker chive plants culturing under field and/or greenhouse. Controlled light qualities in the system resulted in significantly higher hydroponic growth of the plants comparing to conventional greenhouse condition in present.

Distribution of Foodborne Pathogens from Garlic Chives and Its Production Environments in the Southern Part of Korea (남부지방 부추와 재배환경의 식품매개병원균의 분포)

  • Jung, Jieun;Oh, Kwang Kyo;Seo, Seung-Mi;Yang, SuIn;Jung, Kyu-Seok;Roh, Eunjung;Ryu, Jae-Gee
    • Journal of Food Hygiene and Safety
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    • v.35 no.5
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    • pp.477-488
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    • 2020
  • Recently, foodborne illness outbreaks linked to fresh produce are being increasingly reported in the United States, the EU, and Korea as well. Some of this increase may be due to improved surveillance, increase in consumption, change in consumers' habits, and complex distribution systems. Garlic chive is a green, fresh-cut vegetable consumed year-round as a nutrition-rich herb in Korea. It is also prone to contamination with foodborne pathogens during pre-harvest, as amendment with high amounts of livestock manure or compost to soil is required in its cultivation. Our aim in this study was to evaluate microbial contamination of garlic chives, garlic chives cultivation soil, compost, and irrigation water in the southern part of Korea. Samples were collected in A, B, and C regions in 2019 and 2020, and 69, 72, 27, and 40 of garlic chives, soil, compost, and irrigated water, respectively, were analyzed for the presence of sanitary indicator bacteria (total aerobic bacteria, coliforms and Escherichia coli), Bacillus cereus, Staphylococcus aureus, pathogenic E. coli, E. coli O157:H7, Listeria monocytogenes, and Salmonella spp. In A, B, and C regions, levels of total aerobic bacteria, coliform, B. cereus, and S. aureus on all samples were between 1.14 and 8.83 log CFU/g, 0.43 and 5.01 log CFU/g, 0.41 and 5.55 log CFU/g, and 1.81 and 6.27 log CFU/g, respectively. B. cereus isolated from garlic chives and environmental samples showed β-hemolysis activity. Incidence of S. aureus in garlic chive and its production environments in 2020 was different from 2019. In this study, B. cereus and S. aureus were the only pathogenic microorganisms detected in all samples. As a result, this work suggests that continuous monitoring in the production and pre-harvest environment is required to improve hthe hygiene and safety of garlic chive.

Irregular Addressing Scheme for Luminance Improvement of Flat Panel Plasma Display (평판 플라즈마 표시장치의 휘도 개선을 위한 불규칙 어드레싱 구동방식)

  • Son, Il-Hun
    • The Transactions of the Korea Information Processing Society
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    • v.5 no.7
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    • pp.1943-1950
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    • 1998
  • Irregular addressing scheme of gray scale control for the memory type flat panel plasma display is proposed in this paper. Opposed to the conventional addressing method. the scan electrodes are addressed in non-sequential manner. The addressing order for this irregular addressing is resolved to make the pixel duty factor above 90%. This addressing scheme can achieve the prolxJsed peformance regardless of the panel and cell structure and can be implemented without increasing the chive voltage, current or frequency .

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Design and Performance Test of the ER Fluid Clutch (ER유체를 작동유체로 하는 클러치의 제작 및 성능 실험)

  • Jang, Sung-Cheol;Park, Chang-Soo;Lee, Jong-Doo
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.3 no.1
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    • pp.84-89
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    • 2004
  • This study is a basic one for application of ER Fluid to fluid power systems. By mixing silicone oil with zeolite particles, four kinds of ER fluids were made, in which the weight ratio of zeolite particles are different. We examined how the Yield shear stress and Bingham characteristics of the ER fluids are effected by varying electric field intensity. We designed and constructed a disk type power transmission clutch in which ER fluid fills and this ER fluid transmits the power of drive shaft to the driven shaft. With this equipment, the revolution transmission ratio from the chive shaft to the driven shaft by varying electric field density of the ER fluid was examined.

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