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논문 기본 정보

자료유형
학술저널
저자정보
Moon, Young-Sun (School of Applied Biosciences, Kyungpook National University) Lee, Hoi-Seon (Department of Bioenvironmental Chemistry, Chonbuk National University) Lee, Sung-Eun (School of Applied Biosciences, Kyungpook National University)
저널정보
한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제61권 제2호
발행연도
2018.1
수록면
243 - 250 (8page)

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Ginger (Zingiber officinale) essential oil (ZOE) possesses strong antibacterial and antifungal activities. In this study, the antifungal activity of ZOE against Aspergillus flavus was investigated, and a chemical analysis was carried out to identify compounds that control fungal growth. A total of 37 compounds were identified by gas chromatographic analysis with a mass detector, and the antifungal and antiaflatoxigenic properties of three constituents, ${\gamma}$-terpinene, isoborneol, and citral, against A. flavus were tested. All compounds exhibited strong antifungal activity at $1000{\mu}g/mL$, and the antifungal activity of ${\gamma}$-terpinene and citral remained until treatment with tenfold diluted solution. The decrease in aflatoxin production by the three compounds was observed until treatment with $10{\mu}g/mL$. To evaluate their antiaflatoxigenic activity, RT-qPCR was used to compare the expression of 11 genes involved in aflatoxin biosynthesis by A. flavus. Among the three compounds, ${\gamma}$-terpinene and citral markedly reduced the expression of most of the tested genes but a different pattern of downregulation of the expression was observed. ${\gamma}$-Terpinene did not downregulate aflR, aflS, and yap, whereas citral did not alter the expression of aflC and aflG. Therefore, ${\gamma}$-terpinene and citral may have the potential to control A. flavus growth and aflatoxin production in agricultural products, including at the storage stage.

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