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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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The Oxidation Stability of Virgin and Pure Olive Oil on Autoxidation and Thermal Oxidation

자동산화 및 가열산화에 대한 압착 및 혼합 올리브유의 산화안정성

  • 문주수 (국립한경대학교 식품생물공학과 식품생물산업연구소) ;
  • 이옥환 (국립한경대학교 식품생물공학과 식품생물산업연구소) ;
  • 손종연 (국립한경대학교 식품생물공학과 식품생물산업연구소)
  • Published : 2005.01.01
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Abstract

Total tocopherol and phenol contents were determined for virgin and pure oilve oil, and their autoxidation and thermal oxidation were compared with those of commercial soybean oil, in the presence or absence of fluorescent light. The total tocopherol contents of virgin, pure olive oil, and soybean oil were 15.7, 11.2, and 80.7 mg/100 g, respectively. Their total phenol contents were 10.4, 1.6 and 0.5 mg/l00 g, respectively. In autoxidation under dark place at 45$^{\circ}C$, the oxidative stability of the substrate oils decreased in order of virgin oilve oil, pure olive oil, and soybean oil. The average temperature coefficients of the virgin, pure olive oil and soybean oil in the range of 45∼$65^{\circ}C$ were 1.73, 1.83 and 1.64, and the activation energies were 26.86, 29.49, and 24.07 KJ/mol, respectively. In temperature range of 45∼$65^{\circ}C$, pure olive oil was the most susceptible to temperature change, whereas soybean oil the least. In autoxidation under fluorescent light at 45$^{\circ}C$, the oxidative stability of substrate oils decreased in the order of soybean oil, pure olive oil, and virgin olive oil. In thermal oxidation at 18$0^{\circ}C$, the oxidative stability of substrate oils decreased in order of pure olive oil, virgin olive oil, and soybean oil.

압착 및 혼합 올리브유의 총토코페롤 및 총페놀 함량을 비교 분석하고, 아울러 빛의 존재 유무에 따른 자동산화 및 가열산화에 대한 산화안정성을 대두유와 비교 검토하였다. 압착 올리브유, 혼합 올리브유 및 대두유의 총토코페롤 함량은 각각 15.7, 11.2 및 80.7 mg/100 g이었다. 이들의 총페놀 함량은 각각 10.4, 1.6 및 0.5 mg/100g이었다. 암소하에서 자동산화에 의한 산화안정성은 압착 올리브유>혼합 올리브유^gt;대두유 순이었다. 압착 올리브유, 혼합 올리브유 및 대두유의 평균 온도계수는 45∼$65^{\circ}C$의 온도범위 에서 각각 1.73, 1.83 및 1.64이었으며, 활성화에너지는 각각 26.86,29.49 및 24.07 KJ/moi이었다. 빛의 존재 하에서 자동산화에 대한 산화안정성은 대두유>혼합 올리브유>압착 올리브유의 순이었으며, 이 들의 유도기간은 각각 15.3일, 16.4일 및 18.0일이었다. 가열산화에 대한 산화안정성은 혼합 올리브유>압착 올리브유>대두유의 순이었다.

Keywords

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