Avrami Kinetics에 적용한 트레할로스와 변성 전분 혼합 사용 떡의 노화 억제 분석

Retarding Retrogradation of Korean Rice Cakes(Karedduk) with a Mixture of Trehalose and Modified Starch Analyzed by Avrami Kinetics

  • 김상숙 (한국식품연구원 유통연구단) ;
  • 정혜영 (경원대학교 식품영양학과)
  • 투고 : 2010.02.08
  • 심사 : 2010.03.02
  • 발행 : 2010.03.30

초록

Retarding retrogradation of Korean rice cakes(Karedduk) with a mixture of trehalose and Sun-Tender added, after 0, 24, and 48 hr of storage at $5^{\circ}C$, was analyzed by Avrami kinetics. A central composite design was used for arrangement of treatment. The two independent variables selected for retarding retrogradation analysis were amounts of trehalose(x) and Sun-Tender(y). Trehalose was added at 0, 3, 6, 9, and 12% levels, and Sun-Tender added at 0, 0.3, 0.6, 0.9, and 1.2% levels, to dry rice flour. The Avrami exponent(n) for the mixtures of 9% trehalose and 0.3% Sun-Tender, and 9% trehalose and 0.9% Sun-Tender were lower than in the control. The time constant(1/k) for the mixture of trehalose and Sun-Tender was higher than in the control. The effect of retarding retrogradation of Korean rice cakes with added mixtures of trehalose and Sun-Tender showed an increasing trend as the amount of trehalose increased. These results suggest that adding a mixture of 9% trehalose and 0.3% Sun-Tender, or 9% trehalose and 0.9% Sun-Tender to Korean rice cakes(Karedduk) is effective for retarding retrogradation.

키워드

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