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논문 기본 정보

자료유형
학술저널
저자정보
In Guk Hwang (Chungbuk National University) Koan Sik Woo (Chungbuk National University) Dae Joong Kim (Chungbuk National University) Jin Tae Hong (Chungbuk National University) Bang Yeon Hwang (Chungbuk National University) Youn Ri Lee (Chungbuk National University) Heon Sang Jeong (Chungbuk National University)
저널정보
한국식품과학회 Food Science and Biotechnology Food Science and Biotechnology vol 16. no 6
발행연도
2007.12
수록면
963 - 966 (4page)

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초록· 키워드

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The objectives of this study were to identify antioxidant substance in heated garlic juice (HGJ). We evaluated the antioxidant activities of heated garlic juice exposed to 120, 130, and 140℃ for 2 hr. The HGJ was partitioned using the solvents of hexane, chloroform, ethyl acetate, butanol, and water. The ethyl acetate fraction of HGJ treated at 130℃ for 2 hr showed strong antioxidant activity; this extract was isolated and purified using silica gel column chromatography and semipreparative high-performance liquid chromatography. The structure of the purified compound was determined using spectroscopic methods, i.e., ultraviolet, mass spectrometry, infrared, 1H NMR, 13C NMR, DEPT, HMBC, and HMQC. The isolated compound was identified as thiacremonone (2,4-dihydroxy-2,5-dimethyl-thiophene-3-one). Thiacremonone showed strong 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activity, with a 50% inhibition concentration (IC50) of 22.25±0.44 μg/mL, which is much higher than that of the antioxidants ascorbic acid (30.06±0.42 μg/mL), α-tocopherol (71.30±0.97 μg/mL), and butylated hydroxyanisole (50.54±0.94 μg/mL).

목차

Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgments
References

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