The present study was aimed to screen the pectinase activity from some genera of Mocur in laboratory conditions. Pectin was used as the only carbon source in a minimal culture medium. Tow days after inoculation released proteins and sugars were assayed with related reagents and repeated each 2 days up to 21th day. Statistical analysis showed significant variation in released sugars and released proteins among tested genera. Mucor hiemalis silvaticus had highest and Mucor circinelloides janssenii had lowest sugar levels. Also Mucor circinelloides f. lusitanicus had highest and Mucor plumbeus had lowest protein levels. Glucose and protein levels for superior Species have increased until 15 and 13 days, respectively for glucose and protein after inoculation, then decreased until 25th day, but had no variation until 30th day. These results showed that isolates belong to the same forms had no significance difference in pectinase activity.

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