บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Pectinolytic and cellulolytic activities of heat resistant fungi and their macerating effects on mango and African mango.

Ugwuanyi, J. O.; Obeta, J. A. N.;

Journal of the Science of Food and Agriculture Year: 1999 Vol: 79 Issue: 7 Pages: 1054-1059 Ref: 43 ref.

1999

บทคัดย่อ

Pectinolytic and cellulolytic activities of heat resistant fungi and their macerating effects on mango and African mango.

 

Five heat resistant fungi (HRF) Neosartorya fischeri, N. fischeri var. spinosa, N. quadricincta, Paecilomyces varioti and Byssochlamys nivea were studied for pectinolytic and cellulolytic activities. All isolates showed considerable hydrolase, lyase and pectinesterase activity. Hydrolase activity was significantly higher in media containing fruit tissue (mango and Irvingia gabonensis) than in pectin medium (P<0.01), when assayed by both cup plate and viscometric methods. Hydrolase activity in both fruit media were comparable in N. fischeri, N. fischeri var. spinosa and P. varioti but not in N. quadricincta and B. nivea. All isolates showed greater lyase activity in pectin medium than in fruit tissue media except for N. quadricincta. Pectinesterase activity was highest in N. quadricincta on fruit tissue medium. P. varioti did not utilise carboxymethyl cellulose or show cellulase activity. Other isolates produced cellulase with B. nivea having the greatest activity. Each isolate caused considerabl

e maceration of artificially inoculated mango and I. gabonensis fruits, which was not directly related to measurable pectinase or cellulase activity. The possibility of co-operation between pectinase and cellulase in the degradation of fruit tissues is discussed.