Protopectinase production byPaenibacillus polymyxaZ6 and its application in pectin extraction from apple pomace

Paenibacillus polymyxa Z6 was screened as protopectinase (PPase) producing strain and its PPase activity was 44.4 U/mL. The factors influencing PPase production were identified by a two-level Plackett–Burman design with seven variables. The results indicated that Ca2+ concentration, fermentation time, and temperature were the most influential factors on the PPase production, which were applied in the Box–Behnken design. The predicted maximum...