FRUCTOSYLTRANSFERASE ACTIVITY OF COMMERCIAL ENZYME PREPARATIONS USED IN FRUIT JUICE PROCESSING

Of twenty-two commercial fungal enzyme preparations used in fruit juic e processing examined, Pectinex Ultra SP-L, was found to possess the h ighest activity of fructosyltransferase (44.8 units/ml). The enzyme pr eparation converted sucrose into a high fructocliogosaccharide syrup c ontaining 42.3 % kestose, 17.2% nystose, 10.6% sucrose, 27.8% glucose, and 2.1% fructose. The efficiency was 69% based the amount of sucrose consumed.