• Title/Summary/Keyword: vegetable drying

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Determination of sulforaphane in cruciferous vegetables by SIM (선택이온 측정법에 의한 십자화과 채소중의 Sulforahane 함량)

  • Kim, Mee-Ree;Lee, Kun-Jong;Kim, Jin-Hee;Sok, Dai-Eun
    • Korean Journal of Food Science and Technology
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    • v.29 no.5
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    • pp.882-887
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    • 1997
  • Quantitative determination of sulforaphane, S-methylsulfinylbutyl isothiocyanate in 20 cruciferous vegetables of Korean origin was performed. Homogenate of vegetable was extracted with dichloromethane, and the extract, after drying, was subjected to GC/MS analysis, which was based on single ion monitoring (SIM) at m/z 72, 160, 55, 114 and 177. The content of sulforaphane was found to be the highest in the extract of broccoli $(80.2{\sim}617.7\;ppm)$ followed by turnip $(15.4{\sim}23.1\;ppm)$, red cabbage $(9.9{\sim}32.1\;ppm),\;radish\;(5.5{\sim}8.8\;ppm)$ and kale (8 ppm). Among various cultivars of broccoli, broccoli '1243' and broccoli 'Pilgrim' showed higher content of sulforaphane than others. Especially, in the stem of broccoli '1243' and the floret of broccoli 'Pilgrim' the amount of sulforaphane was the highest (>700 ppm). Thus, the content of sulforaphane differed according to the cultivars and the portion of the vegetables.

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Development of Imitation Milk (II). Feed Efficiency Ratio and Over-All Nutritive Value (대용우유 제조에 관한 연구 (제2보). 대용우유의 조성과 영양가)

  • Y. J. Yoo;T. Y. Kim;J. K. Lee;S. H. Kim;T. J. Kim
    • Journal of the Korean Chemical Society
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    • v.21 no.2
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    • pp.125-131
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    • 1977
  • Soymilk prepared from soaked beans under processing conditions indicating in table 2, mixed with vegetable oil, carbohydrate, whey powder, and sodium-caseinate, and fortified with essential amino acids, vitamins and minerals and then made the imitation milk by spray drying. The Feed Efficiency Ratio (FER) and Over-All Nutritive value of spray dried imitation milk were tested with weanling Albino Rats and by chemical analysis methods. The FER of imitation milk M-2, and humanized milk, were respectively 0.24, 0.25 and that of cow's milk, imitation milk M-1 were 0.21, 0.20, compared with 0.24 for imitation milk M-2. The amino acid and fatty acid composition in imitation milk were analyzed by Gaschromatography and Amino Acid Autoanalyzer. The present paper describes the result of studies on the Feed Efficiency Ratio and Over-All Lutritive value concerning amino acid and fatty acid composition in imitation milk. We found that quality of essential amino acids and polyunsaturate fatty acid composition in imitation milk have an strong effect on Feed Efficiency Ratio.

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Commercial pasteurization of foods using high voltage pulsed electric fields treatment (고전압 펄스 전기장을 이용한 식품의 상업적 살균)

  • Shin, Jung-Kue
    • Food Science and Industry
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    • v.53 no.3
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    • pp.284-294
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    • 2020
  • High voltage pulsed electric field technology has been attracting attention in the the food industry as an eco-friendly nonthermal process technology using electrical energy. The lack of understanding of the equipment and the burden of equipment cost have not significantly increased the commercial application, but the potential as a technology to replace the heat process has been continuously increased. Sterilization of foods using the PEF process has been applied to liquid foods with low viscosity such as fruit and vegetable juices, but recently, high viscosity smoothies, high concentrate protein drink, mixed juice, and alcoholic beverages. Studies on sterilization of solid foods such as powders, raw meats are also being conducted. Also, the application of extraction and recovery of useful ingredients, activation of active compounds, pretreatment of drying, improvement of meat quality, changes of properties of starch has been studies.

A Survey on the Usage of Wild Grasses (산채류의 이용실태에 대한 조사)

  • Cho, Eun-Ja
    • Journal of the Korean Society of Food Culture
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    • v.15 no.1
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    • pp.59-68
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    • 2000
  • This survey investigated on the degree of acknowledgment, intake frequency and using methods of wild grasses of the residents in Kyeonggi, Kangwon, Chunnam, Chungbook, Kyeongnam & Cheju area. The results were as follows: 1. An answer that impression of wild grasses is 'nature food' was the highest(42.6%). It was founded that interest of nature food has been increasing. 2. It has been shown that the most common method for elimination of astringent taste is to blanch and then wash several times with water.(62.9%) 3. The most common obtaining routes was traditional market. It has been shown that rate of gathering in the fields is higher in rural community and the group of over 60 years old than that of urban community and the other groups. 4. In rural area, people(28.7%) ate wild grasses more frequently than in urban area. Family with the old and the group of over 40 years old eat wild grass often. 5. More than 95% of answerers were familiar with the names of wild grasses, codonopsis lanceolata, chinese bellflower, braken, mugwort, wild rocambole and edible shoots of a fatsia & Korean lettuce are known to them with over 88.6%, 85.1% respectively. Frequently eaten wild grasses were braken, chinese bellflower, wild tocambole, codonopsis lanceolata, mugwort and korean lettuce orderly. But in Chunnam & Kyeongnam, they were braken, chinese bellflower, mugwort, wild rocambole and Korean lettuce orderly. 6. Wild grasses eaten with rice were total 25 species, and mugwort had the highest usage rate with 41.9%. Mugwort was used for $D'{\breve{o}}k$(rice cake)(77.8%), T'wigim $J{\breve{o}}n$(deep fat fried dish swallow fat fried dish)(50.1%) and liquor(4.6%). In the cooking of Guk(soup), Chigae(stew), Sengch'ae(raw vegetable) and kinds of wild grasses for Namul(cooked seasonal vegetable) & Bokkum(saute) are the most various with 58 species, especially braken was most commonly used for saute. Sedum & Korean lettuce were the common ingredients of Kimch and codonopsis lanceolata was used in liquer & Jangachis(pickle) with 40%, 46% each. Chinese bellflower was used with the most variable cooking method. 7. 43 species of wild grasses were stored by blanching and drying, and braken had the highest rate(32.3%) then aster scaber, flowering fern, Pimpinella brachycarpa, mugwort and ligularia orderly.

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Residual Characteristics of some Pesticides in/on Pepper Fruits and Leaves by Different Types, Growing and Processing Conditions (재배환경, 품종 및 가공 방법에 따른 고추와 고춧잎 중 농약의 잔류 특성)

  • Lee, Hee-Dong;You, Oh-Jong;Ihm, Yang-Bin;Kwon, Hye-Young;Jin, Yong-Duk;Kim, Jin-Bae;Kim, Yun-Han;Park, Seung-Soon;Oh, Kyeong-Seok;Ko, Sung-Lim;Kim, Tae-Hwa;Noh, Jae-Goan;Kyung, Kee-Sung
    • The Korean Journal of Pesticide Science
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    • v.10 no.2
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    • pp.99-106
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    • 2006
  • Chlorothalonil and imidacloprid sprayed onto the green peppers were degraded more faster at outdoor than in greenhouse. These results were affected by dew and photodegration, considering no rain during the experimental period. Chlorothalonil, esfenvalerate and imidacloprid in green pepper, green twist pepper and sweet pepper did not show any residual pattern, because green peppers are one of the continuous harvesting crops and pesticides could not be sprayed homogeneously on them. When green peppers were pickled with soy sauce and green twist peppers were fried with vegetable oil, the amounts of pesticides such as alpha-cypermethrin, bifenthrin, chlorfenapyr, esfenvalerate and imidacloprid were diminished to the levels of about $30{\sim}71$ and $20{\sim}41%$, respectively. Esfenvalerate and imidacloprid could not be detected in 2 month-old hot pepper paste. The removal rates of pesticide residues in leaves of green peppers were about $22{\sim}37%$ by washing, about $74{\sim}95%$ by parboiling, and about $17{\sim}55%$ by drying after parboiling.

A study on eating habits of the Buddhist Priesthood in Seoul and Kyongnam -I. Dietary pattern and special food- (서울, 경남지역 승가(僧家)의 식생활(食生活)에 관한 조사연구 -I. 식이패턴과 특별식 중심으로-)

  • Cho, Eun-Ja;Park, Sun-Hee
    • Journal of the Korean Society of Food Culture
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    • v.9 no.2
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    • pp.111-118
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    • 1994
  • The purpose of this study was to understand dietaty culture of the Buddhist priesthood in Seoul and Kyungnam. This survey was carried out through questionnaries and the subjects were 26 temples and hermitages. The results of this study can be summarized as follow: 1. Most of the Buddhist priesthood takes meal three times for a day regularly. The substitution food was used mainly rice gruel, fruits, powder of roasted grain, kinds of cookie and confectionary, kinds of steamed dish and milk. 2. The seasoning substances were used necessarily soy sauce, soybean paste, salt and sesame, sesame oil, vegetable oil, and used rarely Jepi powder, red powder, chinese pepper and M.S.G. 3. Eating table was used chiefly for Buddhist priethood and a vistor, and tea and cookie, D'ock, noodle were used often. Event and party foods of temple were used Bibimbab, Ogokbab, Yagbab, D'ockguk, soybean of noodle. 4. Offering food to Buddha was used to Five-offered to Buddha(香, 燈, 茶, 果, 米) primarily and religious food was used scarcely. 5. Special food was used D'ock, hand made cookie and confectionaries, kinds of chinish medicine tea and pine needle tea. Injulmi and Julpyun were prepared most frequently, and used to mixed rice flour with mugwort now and then. Coating and filling powders for D'ock were used to red bean, mung bean and soy bean. Kinds of hand made cookie were Yagkwa, Kangjeong, Dasik, Jungkwa and Yangeng. Beverages were thick hot beverage, kinds of leaf tea, chilled beverage, Yaksu mixed with soy sauce and bamboo salt, kinds of chinese medicine tea, milk and milk products and pine needles tea. 6. Preserved foods were used edible mountain herbs and seaweeds in drying and frying.

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