Immobilization of Papain on Chitin and Chitosan and Recycling of Soluble Enzyme for Deflocculation of Saccharomyces cerevisiae from Bioethanol Distilleries
Table 2
Protocols used for papain immobilized on chitosan.
Treatment
Preparation of chitosan with TPP
Adsorption of papain on chitosan with TPP
Reaction time (h)
A′
1 g chitosan in 100 mL 1% acetic acid solution dripped into 200 mL 1% TPP
Washing and addition of the microspheres in 200 mL 1% papain solution (phosphate buffer pH 6.4)
5 and 12
B′
1 g chitosan in 100 mL 1% acetic acid solution dripped into a 200 mL 1% TPP and 1% papain to produce microspheres
—
5 and 12
C′
1 g chitosan in 100 mL 1% acetic acid solution dripped into a solution of 200 mL 1% TPP
Addition of the 1% papain solution instantly after the formation of microspheres