Antifungal Activity of Bacillus polyfermenticus CJ6 Isolated from Meju

메주로부터 분리한 Bacillus polyfermenticus CJ6의 항진균 활성

  • Published : 2009.04.30


The CJ6 bacterial strain, which possesses strong antifungal activity, was isolated from meju and identified as Bacillus polyfermenticus based on Gram staining, biochemical properties, and 16S rRNA gene sequencing. B. polyfermenticus CJ6 showed antimicrobial activity against the various pathogenic molds, yeasts, and bacteria. Antifungal activity from B. polyfermenticus CJ6 was reduced after 24 hr at $70^{\circ}C$ but antifungal activity was not completely destroyed. The antifungal activity was stable in the pH range of $3.0{\sim}9.0$, and inactivated by proteinase K, protease, and ${\alpha}$-chymotrypsin, which indicate its proteinaceous nature. The apparent molecular masses of the partially purified antifungal compound, as indicated by using the direct detection method in Tricine-SDS-PAGE, was approximately 1.4 kDa.


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