Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Study on the Changes of Tocopherols and Lignans and the Oxidative Properties of Roasted Sesame Oil during Manufacturing and Storage

볶은 참기름의 제조 및 저장 중 토코페롤과 리그난 함량 변화 및 산화 특성 연구

  • 이진영 (인하대학교 식품영양학과) ;
  • 김문정 (인하대학교 식품영양학과) ;
  • 최은옥 (인하대학교 식품영양학과)
  • Published : 2008.02.28
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Abstract

This study investigated the antioxidant content and oxidative properties of roasted sesame oil during manufacturing and storage at $25^{\circ}C$ in the dark for 18 months. The manufacturing steps included pressing of the roasted sesame seeds, and then three filtering steps. Filtering decreased the oil viscosity, but increased free fatty acid content. The peroxide value (POV) was not affected by filtering. Sesamin, sesamolin, and tocopherol levels were significantly higher in the $3^{rd}$ filtered oil as compared to the other oils; however, sesamol content was reduced. The roasted sesame oil oxidized slowly during storage at $25^{\circ}C$ in the dark, and there was no POV change up to 9 months of storage. The levels of sesamol, sesamin, sesamolin, and tocopherols in the oil decreased with storage time, and the tocopherol decomposition rate (-3.04%/month) was higher than that of total lignan compounds (-1.06%/month). Therefore, these results suggest that tocopherols have priority over lignan compounds in performing as antioxidants in roasted sesame oil during storage.

볶은 참기름의 제조공정 단계에 따른 산화방지제의 함량 및 산화특성 변화를 볶은 참깨를 압착한 압착유, 1차 여과유, 2차 및 3차 여과유를 사용하여 살펴보았다. 또한, 제품유인 3차 여과유를 $25^{\circ}C$에서 어두운 곳에서 18개월 동안 저장하면서 산화안정성과 산화방지제 함량을 평가하였다. 제조공정에 따른 참기름의 점도는 1, 2, 3차 여과과정에 의해 감소하였고, 유리지방산값은 증가하였으나 과산화물값은 변화가 없었다. 참기름의 세사민, 세사몰린 및 토코페롤 함량은 3차 여과유에서 높았으나 3차 여과유의 세사몰 함량은 유의하게 낮았다. 제품유를 $25^{\circ}C$ 어두운 곳에서 저장하는 동안 유리지방산값과 과산화물값은 각각 저장 3개월, 9개월 이후 증가하였으나, 그 값은 매우 낮았다. 세사몰, 세사민, 세사몰린 및 토코페롤은 제품유를 $25^{\circ}C$ 어두운 곳에서 저장하는 18개월동안 분해되었으며 리그난 화합물이 토코페롤에 비해 안정하였다. 볶은 참기름에 존재하는 리그난 화합물과 토코페롤 중 세사몰과 ${\alpha}$-토코페롤이 참기름의 저장 중 산화안정성에 가장 큰 영향을 주었다.

Keywords

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