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Effects of Germanium Treatment during Cultivation of Soybean Sprouts

게르마늄 처리가 콩나물의 생장에 미치는 영향

  • Kim, Eun-Jeong (Dept. of Food Science and Nutrition, and Kimchi Research Institute, Pusan National University) ;
  • Lee, Kyeoung-Im (Dept. of Hotel Culinary Arts, Yangsan College) ;
  • Park, Kun-Young (Dept. of Food Science and Nutrition, and Kimchi Research Institute, Pusan National University)
  • 김은정 (부산대학교 식품영양학과 및 김치연구소) ;
  • 이경임 (양산대학 호텔조리과) ;
  • 박건영 (부산대학교 식품영양학과 및 김치연구소)
  • Published : 2002.08.01

Abstract

This study was conducted to elucidate the characteristics of soybean sprouts cultured in water containing germanium. In three varieties of Eunhakong, Seomoktae and Subaktae, the yields of germanium soybean sprout were 10~20% more than those of control soybean sprouts after 5 day-cultivation. The hypocotyl of germanium soybean sprouts was thicker than that of control soybean sprouts, but there were no significant differences in the length of hypocotyl and the thickness of cotyledon. Germanium soybean sprouts showed deeper green and yellow color than control soybean sprouts. In addition, the hardness exhibited strongly in germanium soybean sprouts, especially Seomoktae. In the sensory evaluation, germanium soybean sprouts were better than control soybean sprouts in appearance, taste, flavor and preference.

전통식품으로서 콩나물의 고급화와 기능성 강화를 목적으로 대표적인 나물콩 3품종을 시료로 하여 종실의 특성을 분석하고, 일반적인 수돗물과 게르마늄 용해수 그리고 지하수를 이용한 3가지 방법으로 콩나물을 재배하여 콩나물의 수율을 비롯한 생육 특성을 조사하였다. 100립중은 은하콩이 11.2$\pm$1.3 g이었고, 서목태는 11.7$\pm$1.2 g, 수박태는 11.7$\pm$1.9 g이었다. 콩나물 수율은 은하콩과 수박태가 각각 705%, 738%로 서목태의 683%보다 높았으며 게르마늄 용해수로 재배한 게르마늄 콩나물이 각 품종별로 10~20% 더 높았다. 재배일수가 증가함에 따라 배축의 길이는 급격하게 신장되었고, 품종과 게르마늄 함유에 따른 큰 차이는 없었지만 배축의 두께에 있어 게르마늄 콩나물이 더 굵게 나타났다. 색도의 측정 결과 품종간의 차이는 약간 있으나 게르마늄 콩나물이 대조군보다 녹색과 황색의 수치가 더 높은 것으로 나타났다. Texture특성은 서목태의 줄기의 경도가 강한 것으로 측정되었으며 세 품종 모두에서 대조군에 비하여 게르마늄 콩나물이 자엽, 줄기 및 뿌리의 경도가 강하였다. 콩나물의 관능 평가를 실시한 결과 외관에서는 각 품종별로 게르마늄 콩나물이 대조군에 비해 좋게 나타났으며 비린내와 비린맛은 약하고 고소한 맛은 더 강한 것으로 나타났다. 또한 질감에 있어서는 대조군에 비해 아삭아삭한 느낌이 더 강하였으며, 종합적인 평가에서도 게르마늄 콩나물이 우수한 것으로 평가되었다. 따라서 게르마늄은 콩나물의 재배과정에 영향을 미쳐 성장을 촉진시키며 외관 및 맛을 향상시킬 수 있는 것으로 사료된다.

Keywords

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