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논문 기본 정보

자료유형
학술저널
저자정보
김미선 (동덕여자대학교 식품영양학과) 이재환 (서울과학기술대학교 식품공학과) 김명애 (동덕여자대학교 식품영양학과)
저널정보
한국식생활문화학회 한국식생활문화학회지 한국식생활문화학회지 제25권 제6호
발행연도
2010.1
수록면
788 - 794 (7page)

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Camellia sinensis L. (green tea) seed oils were prepared by roasting at $213^{\circ}C$ and pressing (RP), pressing (P), and nhexane extraction (H). The physico-chemical properties of the RP, P, and H samples, including fatty acid composition, color, and sensory characteristics were analyzed. RP, P and H samples were thermally oxidized at $180^{\circ}C$, and oxidative stability was determined by DPPH, CDA, and p-AV at 0, 20, 40, 60, and 80 min. Compared to the P and H samples, RP resulted in significantly higher thermal oxidative stability according to the DPPH, CDA, and p-AV results (p<0.05). The ratio of unsaturated fatty acids to saturated fatty acids among RP, P, and H samples were significantly different (p<0.05). The oleic acid and linoleic acid contents in green tea seed oils were 58 and 23%, respectively. Hunter's color value of lightness (L) for the RP, P, and H samples was not significant. Redness (a) of RP was $3.47{\pm}0.119$ and yellowness (b) of H was $60.10{\pm}2.483$, which were significantly different. Compared to RP samples, H and P samples had the highest color and off-odor values in the sensory evaluation. RP samples showed the highest taste value and were significant overall (p<0.05). The thermal stability of RP extraction was more stable than any other method. Camellia sinensis L. seed oil extracted by RP had better sensory characteristics than other edible oils, including soybean oil, grape seed oil, and extra virgin olive oil.

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