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Fig. 3 | BMC Biotechnology

Fig. 3

From: High-level expression of human arginase I in Pichia pastoris and its immobilization on chitosan to produce L-ornithine

Fig. 3

Effect of the temperature and pH on the free and immobilized ARG I. a Relative activity of the free and immobilized enzymes at different temperatures ranging from 20 to 70 °C; b Relative activity of the free and immobilized enzymes with different PH values ranging from 6 to 12; For both the free and the immobilized enzymes in (a) and (b) the maximum activity was taken as 100 %

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