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Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica

[Studies on identification and secondary metabolites of endophytic fungi strain E8 from Curcuma wenyujin].


PMID 21710748

Abstract

To identify the endophyte strain E8 with high activity from Curcuma wenyujin and study its secondary metabolites. The strain E8 was identified by morphological observation and ITS sequence analysis. Manifold chromatographic methods were used to separate and purify the chemical constituents of fermentation broth from strain E8, and their structures were identified by physiochemical properties and spectral data. The strain E8 belongs to P. oxalicum. Four compounds were isolated from the fermentation broth of this strain and elucidated as chrysophanol, emodin, secalonic acid A and beta-sitosterol. The endophyte P. oxalicum was isolated from medicinal plant Curcuma wenyujin for the first time. Four compounds were first isolated from endophytic fungus in C. wenyujin. Thus, microbial fermentation is a new access for these compounds production.

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