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A gram-negative bacterium isolated from soap (identified as Serratia marcescens) can produce microbial red-pigmented prodigiosin. The prodigiosin was extracted using acetone after 24h cultivation period. The results revealed that the addition of 0.5% sucrose and 0.5% glycine in cultivated medium can enhance prodigiosin production, increasing 2.12-fold and 2.15-fold, respectively. Moreover, an addition...