Journal of the Korean Society of Food Culture (한국식생활문화학회지)

Korean Society of Food Culture (한국식생활문화학회)
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Effect of Individual Phospholipid Components Treating on Storaging and Frying Stability in Soybean Oil

개별 인지질 성분의 처리가 대두유의 저장 및 튀김안정성에 미치는 영향

  • 구본순 (서일대학 식품가공과) ;
  • 김종승 (한국보건산업진흥원 품질평가센터)
  • Published : 2005.08.31
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Abstract

For the storaging and frying stability in soybean oil, the kind of treating antioxidants were mixed tocopherol and phosphatidyl choline(PC), phosphatidyl ethanolamine(PE), phosphatidyl inpsitol(PI), phosphatidyl serine(PS), phosphatidic acid(PA), phosphatidyl glycerol(PG), treating amounts were 0.03%, 0.05%(w/w), respectively. Acid value(AV), peroxide value(POV) and oxidative stability index(OSI) were determined during storage period at $50^{\circ}C$ in soybean oil. Antioxidation effect at frying condition was determined through changes of smoke point. The antioxidation effect according to AV change was $PA>PC>PI{\geq}PG>PS{\geq}PE$, preventing effect about POV change was PA>PG>PC>PS>PE>PI and preventing effect about OSI decreasing was PI>PC>PA>PG>PS>PE. At the result, antioxidation effect of individual phospholipid components in soybean oil was appeared different result according to determination code. Determination result of preventing effect of SP decreasing according to frying at $180^{\circ}C$ during 20 hours was PA>PC>PG>PE>PI>PS. But treating effect of mixed tocopherol in preventing effect about AV, POV was not. In the case of storage at $50^{\circ}C$ in soybean oil, mixed tocopherol was affected as a kind of pro-oxidant. In OSI had some antioxidation effect, preventing effect of SP decreasing had not. Treatment of mixed tocopherol in soybean oil was undesirable as frying oil.

대두유에 혼합 토코페롤과 개별 인지질 성분으로 phosphatidyl choline(PC), phosphatidyl ethanolamine (PE), phosphatidyl inpsitol(PI), phosphatidyl serine(PS), phosphatidic acid(PA) 및 phosphatidyl glycerol(PG)를 각각 0.03%, 0.05%(w/w) 처리하여 이들 성분이 $50^{\circ}C$의 항온저장 조건에서 대두유의 산가(AV), 과산화물가(POV) 및 OSI에 미치는 영향을 측정하였다. 또한, 대두유의 가열안정성에 미치는 영향을 측정하기 위하여 $180^{\circ}C$에서 20시간 동안 가열처리하며 5시간 단위로 시료유를 채취하여 처리시간에 따른 발연점(SP) 변화를 측정하였다. 항온저장에 따른 AV변화에서는 그 항산화 효과가 $PA>PC>PI{\geq}PG>PS{\geq}PE$의 순서였으며, POV상승 억제 효과는 PA>PG>PC>PS>PE>PI의 순서였고, OSI 하락 억제효과는 PI>PC>PA>PG>PS>PE의 순서로 나타났다. 이와 같이 동일한 대두유에 대하여도 그 처리효과는 각 측정항목에 따라 서로 다르게 나타났다. 이러한 항온저장과 달리 $180^{\circ}C$에서 20시간 동안 가열처리하며 5시간 마다 시료유를 채취하여 발연점 하락 억제효과를 측정한 결과는 PA>PC>PG>PE>PI>PS의 순이었다. 상대적으로 혼합 토코페롤 처리군은 산가, 과산화물가 상승 억제 효과가 없을 뿐만 아니라 경우에 따라서는 산화 촉진제로 작용하였으며, OSI에서는 일정 부분의 처리 효과를 인정할 수 있었으나 발연점에서는 무처리군 보다도 오히려 그 하락이 심하여 특히 대두유를 튀김유로 사용할 경우에는 혼합 토코페롤의 처리가 바람직하지 못한 것을 알 수 있었다.

Keywords

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