Response-Surface Statistical Optimization of Submerged Fermentation for Pectinase and Cellulase Production by Mucor circinelloides and M. hiemalis

مقال فى مجلة

2022

تم النشر فى: https://www.mdpi.com/2311-5637/8/5/205

Cellulase and pectinase are degrading cellulosic and pectic substances that form plant

cell walls and, thereby, they have a wide range of applications in the agro-industrial by-products

recycling and food industries. In the current research, Mucor circinelloides and M. hiemalis strains

were tested for their ability to produce cellulase and pectinase from tangerine peel by submerged

fermentation. Experiments on five variables: temperature, pH, incubation period, inoculum size,

and substrate concentration, were designed with a Box–Behnken design, as well as response

surface methodology (RSM), and analysis of variance was performed. In addition, cellulase and

pectinase were partially purified and characterized. At their optimum parameters, M. circinelloides

and M. hiemalis afforded high cellulase production (37.20 U/mL and 33.82 U/mL, respectively) and

pectinase (38.02 U/mL and 39.76 U/mL, respectively). The partial purification of M. circinelloides

and M. hiemalis cellulase produced 1.73- and 2.03-fold purification with 31.12 and 32.02% recovery,

respectively; meanwhile, 1.74- and 1.99-fold purification with 31.26 and 31.51% recovery,

respectively, were obtained for pectinase. Partially purified cellulase and pectinase from M.

circinelloides and M. hiemalis demonstrated the highest activity at neutral pH, and 70 and 50 °C, for

cellulase and 50 and 60 °C, for pectinase, respectively. Moreover, 10 mM of K+ increased M.

circinelloides enzymatic activity. The production of cellulase and pectinase from M. circinelloides

and M. hiemalis utilizing RSM is deemed profitable for the decomposition of agro-industrial wastes.

• نوع عمل المنشور: مقالة علمية
• اسم الناشر: mdpi
• مدينة النشر: Switzerland
• رقم المجلد: 8
• مجلة/صحيفة: Fermentation
• الصفحات: 205