the removal of the raw starch affinity site of ga o with subtilisin led to the formation of a modified ga o ( molecular weight , 170,000 ) , which hydrolyzed glycogen 100 % , similar to ga o and ga i , and was adsorbed onto chitin and fungal cell wall but not onto raw starch , avicel , or chitosan .
C0008141
chitin
C0162969
chitosan