Fig. 2From: Regulation mechanism and bioactivity characteristic of surfactin homologues with C14 and C15 fatty acid chainsEnhancement of C15 surfactin proportion by exogenous addition of 2-methylbutyric acid in B. subtilis Q1. A Surfactin titer and OD600 of B. subtilis Q1 at straight-chain fatty acid (10C–18C) addition. B Surfactin homologues proportion of B. subtilis Q1 at straight-chain fatty acid (10C–18C) addition. C Surfactin titer and OD600 of B. subtilis Q1 at different branched-chain fatty acid addition. D Surfactin homologues proportion of B. subtilis Q1 different branched-chain fatty acid addition. E Surfactin titer and OD600 of B. subtilis Q1 at different 2-methylbutyric acid concentration. F Surfactin homologues proportion of B. subtilis Q1 at different 2-methylbutyric acid concentrationBack to article page