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微生物次級代謝物之研究

       經由 bioassay-guided fractionation 模式,發現紅麴菌產生之 ankaflavin 具有引發 HepG2 細胞發生凋亡的現象,以細胞型態觀察,可能與某些細胞骨架不正常有關,而另一化學構造與 ankaflavin 非常類似的monascin 則無引起細胞死亡的現象,部分研究結果發表於兩篇國際學術期刊,迄今已被引用超過200次;並獲邀撰寫介紹紅麴代謝物中的生物活性成分發表於 Mycofactories (Bentham Science E-Book) 專章。另,從一株極端嗜鹽的古細菌 Haloferax mediterranei ATCC 33500 中,分離其抗氧化及抗UV活性超強的  C50 類胡蘿蔔素,包括 bacterioruberin、monoanhydrobacterioruberin 及 bisanhydrobacterio-ruberin,並且探討菌體可累積這些次級代謝物的培養條件,同時對這些分離的 C50 類胡蘿蔔素進行應用潛力的分析研究。研究發現培養基的氯化鈉及鎂離子濃度與 C50 類胡蘿蔔素的累積量有顯著相關。

Yii-Lih Lin, Teng-Hsu Wang, Min-Hsiung Lee, Nan-Wei Su (2008) Biologically active components and nutraceuticals in the Monascus-fermented rice: a review. Applied Microbiology and Biotechnology, 77:965–973.

Yii-Lih Lin, Teng-Hsu Wang, Min-Hsiung Lee, Nan-Wei Su (2011) Chapter 6. Biological activity and production of Monascus metabolites. In: Mycofactories. Ed. by Ana Lúcia Leitão. Bentham Science E-Book. Bentham Science Publishers Ltd.

Chun-Jen Fang, Teng-Hsu Wang, Min-Hsiung Lee, Nan-Wei Su (2010) Influence of nutritive factors on C50-carotenoids production by Haloferax mediterranei ATCC 33500 with two-stage cultivation. Bioresource Technology, 101:6487-6493.

Teng-Hsu Wang, Ming-Tze Lin, Chun-Jen Fang, Nan-Wei Su (2012) Melanogenesis inhibition and antioxidant activity of bacterioruberin, a C50 carotenoid from extremely halophilic Haloferax mediterranei. Journal of Natural Products (Submission)

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