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Tyukavkina, N.A., Pogodaeva, N.N., Brodskaya, E.I. and Sapozhnikov, Y.M. (1975) Ultraviolet absorption of flavonoids. V. The structure of 3- and 5-hydroxyflavones. Chemistry of Natural Compounds, 11, 613-616. doi:10.1007/BF00567696

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• TITLE: Fractionation and structural identification of antibiotic activity substances from Streptomyces herbaricolor HNS2-2

  AUTHORS: Lili Chen, Youzhi Li, Hongjian Zhu, Yuhua Liu, Bida Gao

  KEYWORDS: Streptomyces Herbaricolor HNS2-2; Quercetin Dehydrate; p-Hydroxyphenyl; 4-Hydroxyflavanone; 3-Hydroxyflavone; Bioactivity

  JOURNAL NAME: Agricultural Sciences, Vol.3 No.4, June 22, 2012

  ABSTRACT: Four groups of antibiotic activity compounds were separated and purified from the ethyl acetate fraction of a broth culture of Streptomyces herbaricolor HNS2-2.Trace analyses were performed and anti-microbial activities were determined. The antibiotic activity compounds were identified as quercetin dehydrate ①, p-hydroxyphenyl ②, 4’-hydroxyflavanone ③, and 3-hydroxyflavone ④ based on spectroscopic data. Compounds 1-4 showed significant antimicrobial activities against Staphylococcus aureus and the tobacco mosaic virus in vitro, suggesting their potential agricultural and medical applications.