Korean journal of food and cookery science (한국식품조리과학회지)

Korean Society of Food and Cookery Science (한국식품조리과학회)
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Functional and Chemical Composition of Hwanggumkong, Yakong and Huktae

국내산 황금콩, 약콩 및 흑태의 일반성분과 기능성 성분 분석

  • Published : 2005.12.01
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Abstract

The chemical composition of isoflavone, oligosaccharide and phytic acid content of three Korean soybeans, Hwanggumkong, Yakkong and Huktae cultivars, were examined. Moisture, crude fat, crude protein and ash content of soybean seeds were all in the ranges of 10.9-$12.5\%$, 15.8-$20.8\%$, 36.5-$41.1\%$ and 5.4-$5.6\%$ respectively, showing differences among the cultivars. Methionine, cystein and histidine were the minor components of soybean protein and ratio of methionine to the total proteins showed significant varietal differences. The main fatty acids of total lipids were linoleic, oleic and palmitic acids, which comprised over $80\%$ of the total fatty acids. Yakkong, Hwanggumkong and Hukae contained 2491.4 $\mu$g, 2176.8 $\mu$g and 1893.5$\mu$g of isoflavone in each gram of dry matter, respectively, and existed mainly as glycoside isomers. Oligosaccharide contents were similar among the cultivars. The total concentration of phytic acid was $2.63\%$ of Hwanggumkong, $2.12\%$ of Yakkong and $2.80\%$ of Huktae.

국내산 대두 품종 황금콩, 약콩, 흑태에 대하여 일반 성분, 지방산조성, 아미노산. isoflavone, 대두올리고당. phytic acid 함량을 조사하였다. 일반성분은 수분 10.9-$12.5\%$, 조단백질 36.5-$41.1\%$, 조지방 15.8-$20.8\%$ 및 회분 5.4-$5.6\%$의 범위의 함량을 나타내었다. 총 지방질의 지방산은 시료 콩 모두에서 linoleic acid이 가장 많았으며, oleic acid, palmitic acid 순으로 이들 세 지방산이 $80\%$이상을 차지하였다. 콩의 주요 아미노산인 Iysine 함량은 황금콩(56.5 mg/g protein)이 가장 많이 함유되어 있었고, 그 다음 흑태가 55.2 mg/g protein였고, 약콩은 48.2 mg/g protein을 함유하였다. 콩에 가장 적게 함유되어 있는 아미노산은 methionine인 것으로 나타났고 다음으로는 cysteine, histidine 순으로 적게 나타났다. 시료의 isoflavone 함량($\mu$g/g soybean)은, 약콩(2491.4), 황금콩(2176.8) 그리고 흑태(1893.5) 순으로 높게 나타났다. 올리고당 함량은 12.2-$16.1\%$로 약콩이 가장 높은 함량을 보였다 대두의 phytic acid 함량도 황금콩 $2.63\%$, 약콩 $2.12\%$, 흑태 $2.80\%$로 품종간에 큰 차이를 나태내지 않았다.

Keywords

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