KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Varietal Difference of Germination, Fat acidity, and Lipoxygenase Activity of Rice Grain Stored at High Temperature

벼 고온저장시 발아율, 지방산도 및 Lipoxygenase 활성의 품종간 차이

  • Kim, Ki-Young (National Honam Agricultural Research Institute, NICS, RDA) ;
  • Lee, Gun-Mi (Dept. of Agronomic, Kyunghee University) ;
  • Noh, Kwang-Il (National Honam Agricultural Research Institute, NICS, RDA) ;
  • Ha, Ki-Yong (National Honam Agricultural Research Institute, NICS, RDA) ;
  • Son, Ji-Young (National Honam Agricultural Research Institute, NICS, RDA) ;
  • Kim, Bo-Kyeong (National Honam Agricultural Research Institute, NICS, RDA) ;
  • Ko, Jae-Kwon (National Honam Agricultural Research Institute, NICS, RDA) ;
  • Kim, Chung-Kon (National Honam Agricultural Research Institute, NICS, RDA)
  • 김기영 (작물과학원 호남농업연구소) ;
  • 이건미 (경희대학교 농학과) ;
  • 노광일 (작물과학원 호남농업연구소) ;
  • 하기용 (작물과학원 호남농업연구소) ;
  • 손지영 (작물과학원 호남농업연구소) ;
  • 김보경 (작물과학원 호남농업연구소) ;
  • 고재권 (작물과학원 호남농업연구소) ;
  • 김정곤 (작물과학원 호남농업연구소)
  • Published : 2007.03.31
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Abstract

This study was conducted to investigate the germination rate, fat acidity and lipoxygenase activity of brown rice after storage of 6 and 12 weeks at high temperature ($35^{\circ}C$) with fifteen Korean and two Japanese rice varieties. Germination rate in rough rice and palatability value in cooked rice by rice taster were lower with longer storage period, while protein content, fat acidity, and lipoxygenase activity in brown rice were higher with longer storage period. Fat acidify was negatively correlated with germination rate. However fat acidity was positively correlated with lipoxygenase activity. Seventeen varieties were classified into two groups on the basis of germination rate, fat acidity and lipoxygenase activity after 12 weeks' storage at high temperature; Group I including eleven varieties of Odaebyeo, Sangmibyeo, Unkwangbyeo, Ilpumbyeo, Nampyeongbyeo, Ilmibyeo, Donganbyeo, Jungsanbyeo, Koshihikari, Hitomebore and Chucheongbyeo showed high germination rate, low fat acidity and low lipoxygenase activity, while Group II including six varieties of Sindongjinbyeo, Hoanbyeo, Gyehwabyeo, Daeyabyeo, Hopyeongbyeo, and Dongin 1 showed lower germination rate, high fat acidity and high lipoxygenase activity.

국내 및 일본에서 육성된 벼 품종을 고온 저장시 저장기간에 따른 발아율, 이화학적 특성, lipoxygenase의 활성 및 이들 상호관계를 검토하였다. 1. 고온저장($35^{\circ}C$)시 발아율, 현미 단백질, 지방산도 및 lipoxygenase 활성은 저장기간 및 품종 간 차이가 크게 있었으며 두 요인의 상호작용도 인정되어 저장기간별 품종 간 차이가 다르게 나타났다. 2. 고온저장에 의한 현미 단백질, 지방산도 및 lipoxygenase 활성은 저장기간이 길수록 증가하였던 반면, 발아율 및 도요식미치는 감소하는 경향이었다. 3. 지방산도와 발아율 간에는 부의 상관이 지방산도와 lipoxygenase의 활성은 정의 상관이 인정되었다. 4. 17개 품종을 발아율, 지방산도 및 lipoxygenase 활성을 고려하여 군집분석을 수행한 결과 2개의 그룹으로 구분되었다. I군에 속하는 품종은 오대벼, 상미벼, 운광벼, 일품벼, 남평벼, 일미벼, 동안벼, 중산벼, 추청벼, 히또메보레, 고시히까리 등 11개 품종으로 비교적 발아율이 높고 지방산도 및 lipoxygenase 활성이 낮았다.

Keywords

References

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