Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Properties of Non-GM Soybeans with Lipoxygenase Free Genotypes

Lipoxygenase 결핍된 Non-GM콩의 특성

  • Lee, Soo-Jung (Dept. of Food Science and Nutrition, Institute of Agriculture and Life Sciences) ;
  • Kim, In-Sung (Dept. of Food Science and Nutrition, Institute of Agriculture and Life Sciences) ;
  • Lee, Hye-Jin (Dept. of Food Science and Nutrition, Institute of Agriculture and Life Sciences) ;
  • Chung, Jong-Il (Dept. of Agronomy, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Sung, Nak-Ju (Dept. of Food Science and Nutrition, Institute of Agriculture and Life Sciences)
  • 이수정 (경상대학교 식품영양학과.농업생명과학연구원) ;
  • 김인성 (경상대학교 식품영양학과.농업생명과학연구원) ;
  • 이혜진 (경상대학교 식품영양학과.농업생명과학연구원) ;
  • 정종일 (경상대학교 농학과.농업생명과학연구원) ;
  • 성낙주 (경상대학교 식품영양학과.농업생명과학연구원)
  • Received : 2013.07.08
  • Accepted : 2013.08.20
  • Published : 2013.10.31
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Abstract

The properties of non-GM soybeans with lipoxygenase (LOX) free genotypes, such as Gaechuck#1 (black, LOX2,3-free), Gaechuck#2 (yellow, LOX2,3-free) and Jinyangkong (yellow, LOX1,2,3-free), were compared to Taekwangkong (yellow, LOX1,2,3-present) as control. Length and weight of soybeans were significantly longer in Gaechuck#1, but LOX free genotypes of yellow beans was smaller than Taekwangkong, in terms the size and weight. After soaking for 12 hr, increased ratios of soybean weight were 217.07~226.55%, and they were significantly higher in Gaechuck#2. The total color difference (${\Delta}E$) to Taekwangkong was the highest in Gaechuck#1, but another yellow soybean were similar. Crude lipids content was significantly higher in Taekwangkong (17.30%), and these LOX free genotypes (13.71~14.66%) did not show significant difference. Crude protein contents were significantly higher in Gaechuck#1 (34.79%) compared to the other soybeans (32.93~33.47%). Contents of glutamic acid among the detected composition amino acid were highest, and its total contents were highest in Gaechuck#1 (32.42 g/100 g), and the total content of Gaechuck#2 was similar to Taekwangkong. Contents of total isoflavone were higher in LOX free genotypes than Taekwangkong, especially significantly higher in Gaechuck#1 (1672.54 ${\mu}g/g$). Contents of total phenol were highest in Gaechuck#1 (276.91 mg/100 g), and flavonoids content of Gaechuck#1 (26.93 mg/100 g) was 2.6~2.8 times higher than the other samples. DPPH, ABTS radical scavenging activities and reducing power were significantly higher in Gaechuck#1. The yield of soybean curd from tested samples was the highest in Gaechuck#2. Gaechuck#2 as LOX free genotypes was similar to Taekwangkong with regard to physicochemical properties and antioxidant activities. Therefore, we propose that Gaechuck#2 is a more suitable genotype for soybean curd products.

Lipoxygenase(LOX)가 결핍된 non-GM콩인 개척#1(검정콩, LOX2,3-free), 개척#2(황색콩, LOX2,3-free) 및 진양콩(황색콩, LOX1,2,3-free)의 이화학적 특성과 두부 수율을 LOX가 존재하는 태광콩(황색콩, LOX1,2,3-present)과 비교하였다. 콩의 길이 및 백립중은 태광콩에 비해 개척#1이 유의적인 차이로 컸으며, 황색콩에서는 LOX가 결핍된 품종이 태광콩보다 크기 및 중량이 다소 작았다. 콩을 12시간 동안 수침한 후 콩의 중량 증가율은 217.07~226.55%로 개척#2가 유의적으로 높았다. 전체적인 색차(${\Delta}E$)는 개척#1이 유의적으로 높았으며, 3종의 황색콩은 시료 간에 비슷한 경향이었다. 조지방 함량은 태광콩이 17.30%로 유의적으로 높았으며, LOX가 결핍된 콩은 13.71~14.66%로 시료 간에 유의차가 없었다. 조단백질 함량은 개척#1(34.79%)이 타시료(32.93~33.47%)에 비해 유의적으로 높았다. 구성아미노산 함량은 모든 시료에서 glutamic acid의 함량이 가장 높았으며, 총량은 개척#1이 32.42 g/100 g으로 가장 많았고 개척#2와 태광콩은 비슷한 함량이었다. 이소플라본 함량은 LOX가 결핍된 콩이 태광콩에 비해 더 많았으며, 특히 개척#1(1672.54 ${\mu}g/g$)에서 가장 높았다. 콩의 총 페놀 함량은 개척#1이 276.91 mg/100 g으로 가장 높았으며, 플라보노이드 함량은 개척#1(26.93 mg/100 g)이 타 시료에 비해 2.6~2.8배 정도 높았다. DPPH, ABTS 라디칼 소거활성 및 환원력은 개척#1이 타 시료에 비해 높았다. Non-GM콩으로 제조한 두부의 수율은 개척#2에서 가장 높았다. 황색콩인 개척#2는 이화학적 특성 및 항산화 활성 측면에서 태광콩과 유사하였고 두부 수율이 높아 두부 제조에 적합한 품종인 것으로 사료된다.

Keywords

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