Optimization of solid-state fermentation for bioherbicide production by Phoma sp .

Brazilian Journal of Chemical Engineering

卷:34

关键词: Bioherbicide;    Bioassay;    solid-state fermentation;    Phoma sp;   

DOI  :  10.1590/0104-6632.20170342s20150613

来源: DOAJ

【 摘 要 】

Abstract In this work the bioherbicide production from Phoma sp. by solid-state fermentation was optimized. Agroindustrial residues such as bagasse, soybean bran and corn steep liquor were used as substrate. The bioherbicide was extracted from the fermented solid and the supernatant was applied for the control of the target plant. The evaluated responses in the bioassay were plant height, root length, fresh and dry weight, number of flowers and phytotoxicity. The results in the bioassays demonstrated that the bioherbicide presented activity towards the target plant and the intensity of the effect was influenced by the formulation of the fermentation medium. The optimized condition for bioherbicide production was (wt%): moisture content 70.0, soybean bran content 30.0 and corn steep liquor (CSL) 20.0, it being possible to obtain an injury phytotoxicity level of 40. The bioherbicide showed a mode of action based on the inhibition of carotenoid biosynthesis.

【 授权许可】

Unknown