• 한국경영과학회지
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• 제4권1호
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• pp.87-102
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• 1979

In Korea, the traditional main food is rice There is a shortage of food, though the land is uesd intensively. The Koreans produce mainly rice its yield is very much higher than other crops. This leads to the comsumption of one type of food and, hence, to an unbalanced diet. Since 1962, Korean income has been going up rapidly, and the demand for animal protein has also increased. In order to solve the probem, the government decided to develop the dairy industry, because this would enable the population to consume more animal protein, and there is weak competion between rice and milk production.

• 정보학연구
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• 제7권4호
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• pp.119-127
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• 2004

As increasing trade through the world, especially in food, asymmetry of information can make the trade shrink. With the industrial development, Korea's agriculture had shrunk dramatically. By the result of the nation's industrial restructuring, over than 3/4 of Korea food consumption comes from abroad. And China is an important source of agricultural product to Korea. Increasing family income and increasing importing food consumption, Korean consumers have been interested in food safety. Especially. after experiencing several cases like struggle for safety of GMO food, poultry influenza, lead contained Chinese fish import, mad cow disease, cheating origin, etc. Obviously, those unreliable cases will hinder the increase of world free trade as well as the trust of two countries. Furthermore, distrust will be a cause of adverse selection. So, it need to find a way to solve the distrust which caused by asymmetry of information. And automatic identification procedures can help mitigate asymmetry of information in trade. And it will make Korean consumers can avoid adverse selection. This paper suggests adoption of Auto ID to encourage agricultural trade between Korea and China.

• Journal of Nutrition and Health
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• 제26권4호
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• pp.433-442
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• 1993

Dietary folate intake and serum folate levels were measured in 26 pregnant, 25 lactating, and 17 non-pregnant, non-lactating women. Dietary folate comsumption was estimated by calculating folate intake based on the information obtained from food frequency quesionnaires and serum folate levels were determined microbiologically using Lactobacillus casei. The total folate (from food and supplements) intakes of pregnant and lactating women were 326.9ug and 407.9ug, which was significantly higher than that of the non-pregnant, non-lactating women(139.5ug). However, with regard to food folate intake, there were no differences among the three groups (160ug for pregnant women, 143.4ug for lactating women). Forty-two percent and 36% of the pregnant and lactating subjects, respectively, were found to be taking commercially available nutritional supplements containing folate. The concentrations of folate in these supplements were in the range of 83ug~1, 000ug per tablet. For lactating women, serum folate levels were significantly higher when folate supplements were voluntarily used. The amount of folate intake was positively correlated with the serum folate levels in pregnant women, but not in lactaing women and non-pregnant, non-lactating women. Serum folate levels were negatively correlated with the ages of the pregnant women, and for lactating women, serum folate was positively correlated with their body weights.

• 분석과학
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• 제8권4호
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• pp.835-841
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• 1995

The quantitation of inorganic anions in various drinking waters were investigated using capillary electrophoresis(CE) and the results were compared with ion chromatography(IC). With CE, in contrast to IC, was demonstrated rapid analysis, good efficiency, a low detection limit and the low comsumption of a solvent and samples. CE analysis was used 5 mM sodium chromate(pH 8.0) containing 20 mM tetraalkylammoniumbromide at -25kV applied voltage with indirect UV detection at 254 nm. This results in exceedingly short analysis time within 3 min. with efficiencies approaching 200,000 theoretical plates. The coefficients of variants of migration time are less than 0.8% and those of peak area are less than 2.3%. Detection limits for quantitative determination were 300 ppb-50 ppm level. These optimum conditions are applicable to various samples without pretreatment.

• 한국식품영양학회지
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• 제12권4호
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• pp.350-357
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• 1999

To investigate the consumption pattern of traditional fermented soybean products a survey was con-ducted to the subjects composed of 308 housewives in busan yangsan and ulsan. Doenjang was rated among one of the often-used traditional foods in Korean meal preparation. 67.2% fo the respondents used Doenjang once or twice a week and 22.7% every day and by the educational level the lower in education level used more. Doenjang has been prepared by housewives themselves(46.9%) or by their relatives(30.7%) for the most important reason of good taste and by purchasing of commercial products(22.4%) for convenience. By regional groups the frequency to use commercial products of Doenjang was higher in Ulsan and the younger or the higher in education level showed the higher frequency. The consump-tion pattern of Gochujang was very similar to that of Doenjang. Chunggukjang which has peculiar flav-our showed very low consumption with being rarely used or having not eaten by 60.3% of subjects. Gan-jang was consumed mainly once or twice a week and jin-ganjang was preferred than Guk-ganjang. In the preparing methods Guk-ganjang have been made by housewives themselves(31.0%) by their relativ-es(29.5%) or by purchasing of commercial products(31.0%) and Jin-ganjang mainly by purchasing of commercial products(65.0%) which showed higher consumption frequency of commercial products com-pared with Doenjang and Gochujang.

• 한국양식학회지
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• 제18권2호
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• pp.86-91
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• 2005

I. galbana, P. parvum 및 P. patelliferum 등 3종의 착편모조를 각각 먹이로서 급이 하면서 각각의 먹이에 따른 해산 요각류 T. japonicus의 nauplius 및 copepodid 유생의 개체수 증식 양상과 재포란 암컷의 개체수 변화 양상, 그리고 배양 도중 사망한 성체 암컷의 개체수를 서로 비교하였으며, 또한 각 계수일에 측정한 배 양수내의 먹이로서 급이한 3종의 착편모조의 세포수 변화 양상을 관찰하였다. 비교구로서 먹이를 전혀 공급하지 않은 실험구의 T. japonicus는 고압 멸균한 자연 해수만을 이용하여 배양하였다. 실험 결과 3종의 착편모조 중 I. galbana를 급이한 경우에는 T. japonicus의 정상적인 유생 발생과 함께 적극적인 I. galbana의 섭이를 관찰할 수 있었으나, P. parvum과 P. patelliferum을 급이한 경우에는 갓 부화한 nauplius 유생이 거의 100% 사망하였고 암컷 성체의 재포란율 또한 거의 0 (zero)임이 관찰되었다. 더욱이 15일간의 실험기간 중에 암컷 성체의 사망을 관찰하였다. 위와 같은 일련의 실험 결과로 볼 때, 독성을 가지며 적조의 원인종으로 알려진 착편모조 P. parvum과 P. patelliferum은 요각류 T. japonicus에 대해서 유해함을 알 수 있었다.

• 한국식품과학회지
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• 제9권3호
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• pp.211-219
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• 1977

한국산(韓國産) 육지면(陸地綿)의 면실(綿實)에서 조단백질(粗蛋白質)의 추출(抽出) 분리(分離) 및 분리(分離)된 조단백질(粗蛋白質)의 아미노산(酸) 그리고 gel filtration에 의한 단백질(蛋白質)의 Disc전기영동상(電氣泳動像) 및 여러 용매(溶媒)에 의한 gossypol 제거실험(除去實驗) 결과(結果)를 보면 다음과 같다. (1) 탈피(脫皮) 탈지(脫脂)한 면실분(綿實粉)을 pH 9.84(single step)의 알칼리용액에 30분간(分間) 추출(抽出)한 것은 pH 5에서 가장 조단백질(粗蛋白質)이 많이 침전(沈澱)되었으며, 상기(上記) 면실분(綿實粉)을 먼저 물로 추출(抽出)한 후 그 잔사물(殘渣物)을 다시 pH9.76(two step)의 알칼리용액으로 추출(抽出)한 것은 pH7에서 가장 조단백질(粗蛋白質)이 많이 침전(沈澱)되었으며, 물에 가용성(可溶性) 단백질(蛋白質)은 pH4에서 침전물(沈澱物)이 가장 많았다. (2) 탈피(脫皮) 탈지(脫脂)한 면실분(綿實粉)에는 조단백질(粗蛋白質)이 61.3%함유(含有) 되어있다. (3) 분리(分離)된 조단백질(粗蛋白質)의 아미노산조성(酸組成)에 glutamic acid가 가장 많이 들어 있으며 필수(必須)아미노산(酸)도 고루 들어 있다. (3) gossypol 제거용(除去用) 용매(溶媒)로서 n-hexane과 acetone이 가장 좋은 용매(溶媒)이며 n-hexane의 경우 70%의 gossypol를 acetone의 경우는 52%까지 추출(抽出) 제거(除去)시킬 수 있었다. (4) 수용성(水溶性) 조단백질(粗蛋白質)은 Disc전기영동상(電氣泳動像)에서 $10{\sim}13$개의 band가 나타났다. (5) single 및 two step에서 추출(抽出)한 단백질(蛋白質)은 Disc전기영동상(電氣泳動像)에서 각각 10개와 12개의 band로 나타났다. (6) 면실단백질(綿實蛋白質)에서 얻은 단백질(蛋白質)을 Sephadex G-100 및 G-200 column으로 좀더 정제(精製)할 수 있었다. (7) 면실분(綿實粉)의 이용(利用)으로서는 먼저 n-hexane이나 acetone과 같은 용매(溶媒)로 탈지(脫脂) 및 gossypol를 제거(除去)한 후 $10{\sim}20%$를 첨가(添加)하여 사용(使用)하면 단백질(蛋白質) 보강(補强) 식량(食糧)이 될것이다.