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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Shelf Life Extension of Non-Dairy Cream with the Addition of Natural Antioxidants

천연 항산화제 첨가에 따른 식물성 크림의 유통기간 연장

  • Han, Hee-Tak (Technical Research Institute, Dongsuh Oil & Fats Co.) ;
  • Cha, Yong-Jun (Dept. of Food and Nutrition, Changwon National University)
  • 한희탁 (동서유지(주) 기술연구소) ;
  • 차용준 (창원대학교 식품영양학과)
  • Received : 2011.02.11
  • Accepted : 2011.04.21
  • Published : 2011.05.31
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Abstract

We conducted a study to select a suitable natural antioxidant from tocopherol, rosemary extract, and green tea extract to be added to commercially-available palm oil to extend the shelf life of non-dairy cream. The green tea extract (400 ppm added) was the most effective of the 3 antioxidants added to the palm oil, increasing OSI time by a factor of 2.3. By examining the correlation coefficients among parameters for storage period, the sensory score indicated that the non-dairy cream was suitable. The shelf life of the TE (green tea extract, 400 ppm) and TEA (TE plus 0.002% ascorbic acid) oils was extended to 24% and 51% more than that of the control at $25^{\circ}C$, respectively. At $20^{\circ}C$, the shelf life of the TE oil was 2.5 months and that of the TEA oil was 5.5 months, increases of 28% and 62.5%, respectively, over the control.

트랜스산 문제로 경화공정이 기피되는 상황에서 식물성 유지의 산화안정성 향상과 이를 이용한 분말상 식물성크림의 유통기간 향상을 목적으로, 천연 유래의 산화방지제인 토코페롤, 녹차추출물, 로즈마리 추출물의 항산화 효과와 ascorbic acid의 상승효과도 검토하였다. 또한 가속실험을 통하여 이들 제품의 유통기간 연장 가능성을 예측하고자 하였다. 팜유에 대한 항산화 활성이 가장 큰 항산화제는 녹차추출물이었으며 팜유에 400 ppm 첨가한 경우 OSI 시간은 67.7시간으로 팜유 대비 2.3배 향상되었다. 유통기간 예측을 위한 품질지표는 관능점수가 가장 높은 결정계수를 보였고, $20^{\circ}C$에서는 대조군에 비해 녹차추출물(400 ppm) 첨가군 (TE)은 2.5개월(28%), 녹차추출물(400 ppm)과 ascorbic acid(0.002%)를 첨가한 군(TEA)은 5.5개월(62.5%)이 연장되었다. $25^{\circ}C$에서는 대조군이 7.2개월인 데 비하여 TE군은 8.9개월(23%), TEA군은 51% 향상된 10.9개월의 유통기간 연장효과를 보였다.

Keywords

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