• Journal of Bio-Environment Control
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• v.30 no.3
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• pp.218-229
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• 2021

Recently, as consumers' interest and importance in health care have significantly increased, they prefer natural and organic foods that do not use chemical pesticides. Since sprout vegetables effectively promote health and prevent diseases such as cancer and cardiovascular disease, the consumption of sprout vegetables, a highly functional and safe food, has been increased significantly. This study aimed to investigate the effect of light on the growth and bioactive compounds of seven different sprout vegetables. After sowing the seeds of various sprout vegetables (kale, Chinese kale, broccoli, red cabbage, alfalfa, red radish, and radish), the sprouts were cultivated under light conditions (20℃, RGB 6:1:3, 130 μmol·m^-2·s^-1, 12 hours photoperiod) and dark condition for 7 days. Sprouts samples were taken at 1-day intervals from 4 to 7 days after treatment. The fresh weight, dry weight, plant height, total phenol content, and antioxidant capacity were measured. Brassica species (kale, Chinese kale, broccoli, red cabbage) and Medicago species (alfalfa) had significantly higher fresh weight values under dark conditions, while the content of bioactive compounds was increased considerably under light conditions. In contrast, the fresh weight of Raphanus genus (red radish, radish) significantly increased under the light condition, but the antioxidant phenolic compounds were significantly higher under the dark state. A negative correlation was observed between the growth and secondary metabolites in various sprout vegetables. This study confirmed the effect of light and dark conditions on different sprout vegetables' growth and nutritional value and emphasizes the importance of harvest time in producing high-quality sprout vegetables.

• 농업기술회보
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• v.51 no.4
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• pp.26-27
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• 2014

지구 온난화의 영향으로 여름철 시설하우스 내부온도는 $40{\sim}50^{\circ}C$이상 상승하는 반면 습도는 50~70%로 낮아진다. 우리나라는 여름철에 비가 집중되고 국지성 호우가 증가하는 추세로 6월부터 고온과 과습으로 인해 수정률이 낮아지고 생리장해가 증가되는 등 생산량과 품질이 저하돼 가격변동이 심한 편이다. 때문에, 여름철에도 안정적으로 시설채소를 생산하고 품질이 향상시키기 위한 환경조절 및 작물관리 기술을 소개한다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2003.07a
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• pp.295-302
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• 2003

마늘(Allium sativum L.)은 독특한 풍미로 옛날부터 우리 식생활에 중요한 향신료로 사용되어지고 있다 마늘은 백합과(Lilliaceae)에 속하는 다년생 채소로서 우리나라 채소류 중 재배면적으로 볼 때 배추, 무, 고추 다음으로 많이 재배되는 주요 작물이며, 최근 여러 가지 약리작용과 항균작용, 항산화 작용 등이 밝혀지면서 생리활성식품으로 널리 이용되고 있다. (중략)

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.10 no.4 s.91
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• pp.104-110
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• 1989

장마철에는 잦은 강우로 인해 병원균의 효과적인 전파가 가능하다. 또한 태풍, 폭풍우 등으로 생기는 식물체의 상처는 병원균의 침입에 좋은 조건이 된다. 고추, 토마토, 참외, 수박, 오이등 주요 채소작물에 있어서, 역병$\cdot$탄저병$\cdot$세균병해 등 장마기에 발생이 많아 피해가 큰 병해들을 중심으로 병해관리요령과 방제상의 주의점들을 알아본다.

• Proceedings of the Korean Journal of Food and Nutrition Conference
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• 2002.06a
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• pp.21-28
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• 2002

김치는 한국의 오래 전부터 내려온 발효된 채소이다. 한국인의 식사에는 밥과 김치가 필수적이다. 김치는 신맛과 단맛, 그리고 독특한 탄산맛을 갖고 있다. 김치는 배추를 주원료로 하고, 고추, 마늘, 파, 생강 등 다양한 채소로 만들어지므로 식이섬유(dietary fiber)와 비타민이 풍부하고 지방(fat)과 콜레스테롤(cholesterol)이 거의 없다. 현대에 들어오면서 김치는 건강에 유익한 식품(natural health food)으로 주목받고 있다.

• Korean Journal of Food Science and Technology
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• v.26 no.6
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• pp.805-813
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• 1994

Zucchini slices, sweet potato stems, taro stems, and platycodon treated with various methods such as dipping in citric acid solution, sulfite solution, or sulfur fumigation were dried by the natural sun drying method or the forced air drying method at 50, 70, 90, or $105^{\circ}C$. Mold growth of the dried vegetables and sensory quality of the dried and rehydrated vegetables were investigated. Limiting moisture contents to prevent mold growth over 3 month storage under room temperature were 15, 20, 25, and 15% for zucchini slices, sweet potato stems, taro stems, and platycodon, respectively. The chlorophyll containing vegetables dehydrated by the forced hot air showed better sensory quality than those by the natural sun. Among the pretreatments, dipping in the sulfite solution provided the best sensory quality to the dried vegetables. The sensory quality of dried platycodon was improved to a small extent by sulfur fumigation and sulfite solution treatment. The sensory quality of the dried platycodon was not found to be affected by the drying methods. All the tested vegetables dried at $105^{\circ}C$ had the worst sensory quality. Except drying temperature of $105^{\circ}C$, the lower the drying temperature, the better the sensory quality and the rehydration rates were obtained for the tested vegetables except platycodon. The sensory quality of the platycodon was little affected by the drying temperature tested in the range of $50{\sim}90^{\circ}C$.

• Journal of Applied Biological Chemistry
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• v.59 no.1
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• pp.63-68
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• 2016

This study was performed to assess the microbiological quality of Brassica campestris var. narinosa microgreen from harvesting and processing steps. The samples were analyzed for total viable cell counts (TVC), coliforms, Enterobacteriaceae, Escherichia coli, Salmonella spp., Listeria monocytogenes, Vibrio parahaemolyticus, Bacillus cereus, and Staphylococcus aureus. The total viable counts of microgreen (whole leaves) and environment samples from harvesting steps were higher than 6.8 log CFU/g and the contamination level of coliforms in the samples were 3.2 log CFU/g and 3.5 log CFU/g of microgreen and soil, respectively. In case of microgreen samples collected from processing steps, the contamination level of TVC and coliforms were higher in raw materials than samples obtained from later stages of processing, i.e. washing, drain, and final products. The contamination levels of B. cereus in raw materials and environments decreased approximately 1.4 log CFU/g in final products. S. aureus was detected in soil samples but Salmonella spp., Listeria monocytogenes, Vibrio parahaemolyticus and pathogenic E. coli was not detected. In order to identify the sources of contamination for microgreen, the genetic similarity of B. cereus isolates obtained from harvesting and processing steps were compared using the repetitive-sequence-based polymerase chain reaction method. B. cereus isolates obtained from harvesting environments and microgreen were clustered with a similarity greater than 95%. In case of B. cereus isolates obtained from microgreen and environmental samples at processing steps showed low genetic similarity.

• Journal of Bio-Environment Control
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• v.16 no.4
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• pp.420-425
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• 2007

This study was conducted to find out the effect of vitamin C treatments on the storability of several baby vegetables; endive, green romaine lettuce, pak-choi, red romaine, lollo rosa, and ssamchoo. The vitamin C was treated by the foliar spray which was carried out 3 times before harvest or dipping in vitamin C solution for 5 minutes after harvest. The vitamin C contents of 6 different baby vegetables were higher in vitamin C treatments than control, whereas the difference of vitamin C content between treatments was disappeared after storage. The fresh weight of ssamchoo and lollo rosa lettuce treated by vitamin C was maintained higher than that of control. There was not significant difference in visual quality among treatments, though some of baby vegetables treated by washing with vitamin C showed better visual quality than the others. The contents of carbon dioxide, oxygen and ethylene in MAP with baby vegetables did not show any difference among treatments. As the result, high concentrated vitamin C treatment, such as the foliar spray and washing (dipping) had a role of increasing functionality, but the enhanced functionality, high vitamin C, did not affect storability in baby vegetables.

• Journal of Life Science
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• v.19 no.6
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• pp.751-755
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• 2009

This study was attempted to provide basic data for effective sanitization of sprouts. Sanitization treatments were performed by dipping four sprouts (alfalfa, broccoli, clover and red radish) into chlorine water. Microbial analyses were composed of the total plate count (TPC), coliform count, and E. coli count. All examined sprouts exhibited high levels of TPC ($10^{7}$ CFU/g) and coliform ($10^{6}$ CFU/g). E. coli was detected in broccoli and red radish sprouts in the range of $10^3{\sim}10^4$ CFU/g. Among chlorine water sanitization, the microbial reduction was largest in 100 ppm chlorine water, and its TPC and coliform counts decreased to $8.0{\times}10^5{\sim}2.7{\times}10^6$ CFU/g and $4.3{\times}10^5{\sim}4.6{\times}10^5$ CFU/g, respectively. E. coli was not detected in all sprouts that were given 100 ppm chlorine water treatment. The effective dipping time in 100 ppm chlorine water treatment was 30 min and 60 min, in which TPC were below the microbiological safety limits of ${\times}10^{6}$ CFU/g. Coliform counts were decreased to $9.1{\times}10^4{\sim}2.4{\times}10^5$ CFU/g when the sprouts were dipped for 30min, and kept the similar level after that time. These levels exceeded the microbiological safety limits of $10^{3}$ CFU/g. E. coli was not detected in samples by 100 ppm chlorine water treatment.

• Korean Journal of Environmental Agriculture
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• v.12 no.3
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• pp.247-254
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• 1993

The growth responses of Chinese Cabbage, lettuce, and spinach were evaluated to investigate the feasibility of carbonized rice-hulls as a sanitary cultivation media instead of soil. The carbonized rice-hulls were pretreated with several inorganic acid such as nitric, sulfuric, hydrochloric, and phosphoric acid for neutralization. The neutralization of the carbonated material using nitric, sulfuric, and phosphoric acid did not alter the growth responses of these vegetables compared to those of control plants grown on the normal cultivation soil. Especially, the nitric acid pretreatment resulted in the better growth of these plants than the mixture of soil and compost. This is probably due to the additional supply of the nitrate-nitrogens. However the growth responses of lettuce and spinach on the carbonated materials neutralized with hydrochloric acid were different and appeared to be having symptom which is analogous to the chloride toxicity during the late stage of growing. Although no difference was observed in chemical composition, the contents of protein-nitrogen were higher in the plants grown on the carbonated material compared to those of plant grown on the mixture of soil and compost. Based on our preliminary results, the carbonized and neutralized rice-hulls are very useful bed material for the sanitary cultivation under the controlled environmental condition.