Studies on the Changes in Chlorophyll, Free Amino Acid and Vitamin C Content of Soybean Sprouts during Circulation Periods

콩나물의 유통과정중(流通過程中) Chlorophyll, Amino산(酸) 및 Vitamin C의 변화(變化)에 관(關)한 연구(硏究)

  • Kim, Soon-Dong (College of Home Economics, Hyosung Women's University) ;
  • Jang, Bong-Hae (College of Home Economics, Hyosung Women's University) ;
  • Kim, Hyae-Sook (College of Home Economics, Hyosung Women's University) ;
  • Ha, Kyu-Hyen (College of Home Economics, Hyosung Women's University) ;
  • Kang, Kyung-Soon (College of Home Economics, Hyosung Women's University) ;
  • Kim, Duck-Hee (College of Home Economics, Hyosung Women's University)
  • 김순동 (효성여자대학교 가정학과) ;
  • 장봉희 (효성여자대학교 가정학과) ;
  • 김혜숙 (효성여자대학교 가정학과) ;
  • 하귀현 (효성여자대학교 가정학과) ;
  • 강경순 (효성여자대학교 가정학과) ;
  • 김덕희 (효성여자대학교 가정학과)
  • Published : 1982.09.01

Abstract

This study was conducted to investigate the changes in plant state, chlorophyll, free amino acids and vitamin C content of soybean sprouts during circulation periods. The experiment was carried out under the indoor natural light and complete darkness at $20^{\circ}C$. The results are summarized as follows; Soybean sprout was grown about one cm in the darkness for 7 or 24 hours, but under the indoor natural light it was not grown. Weight was decreased both in the darkness and under the light. In the darkness the color of sprouts were not changed, but under the light the color was changed in 7 or 24 hours. Chlorophyll contents was increased rapidly by light in the cotyledon. Chlorophyll formation brought about loss not only in amino acids but also porphyrins, but it did not in the amino acids of hypocotyl. The kinds of amino acids being brought about loss under the light were cystine, aspartic acid, serine, histidine and glycine. The 22$\sim$27% of vitamin C was lost in cotyledon by 7 hours exposured light and in hypocotyl after 5 hours.

콩나물의 유통과정(流通過程)동안 $20^{\circ}C$의 암소(暗所)와 명소(明所)(109 lux)에서의 chlorophyll, 역리(逆離) amino 산(酸) 및 vitamin C의 함량변화(含量變化), 상태변화(狀態變化)를 측정조사(測定調査)한 결과(結果)를 요약(要約)하면 다음과 같다. (1) 유통(流通)동안의 길이, 함량(重量) 및 변색정도(變色程度)를 측정(測定)한 결과(結果)는 암소하(暗所下)에서는 7$\sim$24 시간(時間) 경과(經過)되는 동안에 약 1cm 가까이 신장(伸長)되었으나 명소(明所)에서는 큰 변화(變化)가 없었다. 명소(明所), 암소(暗所) 다같이 콩나물 중량(重量)은 감소(減少)되었으며, 명소(明所)에서의 감소율(減少率)이 높았다. 암소하(暗所下)에서는 변색(變色)되지 않았으나 명소(明所)에서는 7$\sim$24시간(時間)에 변화(變色)되었다. (2) 콩나물의 자엽(子葉)은 광(光)의 노출(露出)에 의하여 빠르게 녹변(綠變)되었으며 녹변(綠變)은 porphyrin과 같은 전구체(前驅體)뿐만 아니라 amino산(酸)의 손실(損失)은 초래(招來)하였다. 그러나 배축(胚軸)에서는 amino산(酸)의 손실(損失)이 없었다. (3) 명소(明所)에서 손실(損失)되는 amino산(酸)은 cystine, aspartic acid, seine, histidine, glycine 등(等)이었다. (4) 유통기간(流通期間)동안 암소(暗所)에서는 vitamin C의 손실(損失)이 없었으나 광(光)에 노출(露出)은 자엽(子葉)은 7일간(時間), 배축(胚軸)은 5시간(時間)만에 22$\sim$27%의 손실(損失)을 초래(招來)하였다.

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