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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effect of Glucono Delta-lactone on the Quality of Cooked Rice

Glucono Delta-lactone의 첨가가 쌀밥의 품질에 미치는 영향

  • 김재훈 (한국원자력연구소 방사선식품생명공학기술개발) ;
  • 오상희 (한국원자력연구소 방사선식품생명공학기술개발) ;
  • 이주운 (한국원자력연구소 방사선식품생명공학기술개발) ;
  • 이창용 (CJ주식회사 식품연구소 쌀가공센타) ;
  • 변명우 (한국원자력연구소 방사선식품생명공학기술개발)
  • Published : 2004.12.01
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Abstract

The effects of glucono delta-lactone on the Quality of cooked rice were investigated. Cooked rice was prepared with the addition of acetic acid (AA) and glucono delta-lactone (GDL). Microbial population and textural properties were determinated during the storage periods at 3$0^{\circ}C$. The addition of AA and GDL above 0.1% was effective in the inhibition of bacterial growth for 72 hrs at 3$0^{\circ}C$. Lightness increased by addition of AA and GDL, but yellowness decreased. Hardness was significantly increased by adding AA and GDL, and also stickiness decreased by adding AA. Whereas, stickiness of cooked rice adding GDL increased significantly as the content of GDL increased. The present results confirmed that GDL was a useful food additive to extend the shelf-life and improve the Quality of cooked rice.

쌀밥의 저장기간 연장과 품질개선을 목적으로 glucono delta-lactone(GDL) 및 acetic acid(AA)를 첨 가하여 취반한 후 3$0^{\circ}C$에 저장하면서 미생물학적, 물리적 색도, 조직감을 평가하였다. 대조구와 아세트산 0.05% 및 GDL 0.05% 첨가구가 저장 중 미생물 생육으로 인해 부패된 것과 달리 아세트산 0.1% 첨가구와 GDL 0.1%∼0.2% 첨가구는 저장 72시간까지 미생물이 검출되지 않았다. 색도의 경우 아세트산과 GDL 첨가에 의해 명도는 증가하였고 황색도는 감소하였다. 경도는 아세트산과 GDL 첨가에 의해 증가하는 경향이었으나, 점착성은 아세트산 첨가구가 감소한 것과 달리 GDL 첨가구는 증가하여 밥의 조직감이 향상된 것으로 나타났다. 이상의 결과를 종합하여 볼 때 GDL은 쌀밥의 저장기간 연장뿐만 아니라 밥의 색과 조직감 등 쌀밥의 품질을 향상시키는데 아주 효과적인 것으로 나타났다.

Keywords

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