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(A) Protease production (U/mL) and (B) biomass concentration (g/L) by R. mucilaginosa CBMAI 1528. The strain was grown on different culture media at 20 °C, pH 5.6, in flasks shaken at 250 rpm for 48 h. Compositions of the different culture media (1-9) are listed in Table 3. Data are means ± s.d. n = 3, where samples labelled with identical letters are not significant at P < 0.05.
