Abstract
Experiments have been made on fractionation of the pectolytic enzymes produced by Coniothyrium diplodiella. It has been observed that 30 to 35% of the polygalacturonase (PG) activity of the pectolytic enzymes of the said microorganism is salted out with ammonium sulfate, and this portion contains endo-PG I, endo-PG II and pectin esterase (PE)(with a trace of exo-PG). The endo-PG I accounts for 60 to 65% of the total PG activity, and the endo-PG II, 25 to 30%. Both types of endo-PG scarcely act on pectin, and hydrolyze pectic acid to the extent of 65 to 70%.
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