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Bioassay-guided isolation and characterization of antibacterial compound from Aspergillus fumigatus HX-1 associated with Clam.


ABSTRACT: This study aimed to identify a symbiotic fungus strain HX-1 with anti-Vibrio harveyi activity and isolate and identify the active compound. The HX-1 strain was identified as Aspergillus fumigatus according to the morphological characteristics and internal transcribed spacer (ITS) sequence analysis. The compound was isolated from the fermentation product of HX-1 strain through ethyl acetate extraction, silica gel and Sephadex LH-20 column chromatography, and semi-preparative HPLC techniques using an antibacterial-guided fractionation method. According to its physicochemical properties and spectral characteristics, the compound was identified as trypacidin having the same anti-V. harveyi activity as streptomycin sulfate, with the minimum inhibitory concentration of 31.25 µg/mL.

SUBMITTER: Xu X 

PROVIDER: S-EPMC7994498 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Bioassay-guided isolation and characterization of antibacterial compound from <i>Aspergillus fumigatus</i> HX-1 associated with Clam.

Xu Xiaowen X   Guo Siya S   Chen Hui H   Zhang Zongyi Z   Li Xiangrong X   Wang Wenbin W   Guo Lei L  

3 Biotech 20210325 4


This study aimed to identify a symbiotic fungus strain HX-1 with anti-<i>Vibrio harveyi</i> activity and isolate and identify the active compound. The HX-1 strain was identified as <i>Aspergillus fumigatus</i> according to the morphological characteristics and internal transcribed spacer (ITS) sequence analysis. The compound was isolated from the fermentation product of HX-1 strain through ethyl acetate extraction, silica gel and Sephadex LH-20 column chromatography, and semi-preparative HPLC te  ...[more]

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