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. 2019 Jul 1;19:43. doi: 10.1186/s12896-019-0536-4

Fig. 4.

Fig. 4

a Effect of polyols on protease SPPS stability. b The combined effect of Ca2+ and sorbitol 10% (v/v) on protease SPPS stability at 90 °C. c Hydrolysis curves of casein protein treated with various purified enzymes. The purified proteases used were: SPPS (♦), SPTC (■), Flavourzyme® 500 L (●), and Thermolysin type X (▲)