Figure 1.

Bioproduction of PG by S. marcescens TNU02 by fermentation using various MCWs, such as squid pen powder (SPP), shrimp head powder (SHP), fresh shrimp shell powder (fr-SSP), demineralized crab shell powder (de-CSP), and demineralized shrimp shell powder (de-SSP), as major C/N sources with supplementary casein as a free protein at the ratio of 7.0/3.0. The C/N source (1.60%) was added to a liquid medium of 0.03% K₂HPO₄ and 0.05% CaSO₄. The fermentation was performed for two days at 150 rpm (shaking speed) in the dark at 25℃. The error bars in the figures are standard errors (SE).