Fig. 4

Effects of exogenously addition of branched-chain amino acids at different time points on natamycin production of S. gilvosporeus ATCC 13,326. (a) Valine; (b) Leucine; (c) Isoleucine. The error bars represent the standard error of the mean. Asterisk denotes statistically significant differences: *p < 0.05; **p < 0.01; ***p < 0.001; ****p < 0.001