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PEG-based ultrasound-assisted enzymatic extraction of polysaccharides from Ginkgo biloba leaves
Lijin Zhang1, Shanshan Guo1, Maoshan Wang1
1Department of Food Science and Nutrition, School of Hotel Management, University of Jinan, No. 13, Shungeng Road, Jinan, Shandong 250002, PR China.
Abstract:
In this study, one kind of environmentally friendly solvents named polyethylene glycol (PEG) was developed for the ultrasound-assisted enzymatic extraction (UAEE) of polysaccharides from Gingko biloba leaves (GBLP). Box-Behnken design (BBD) was used to optimize the UAEE conditions of GBLP. Results showed that the optimal extraction conditions were: a pH of 4.34, an extraction temperature of 51.88 °C and an extraction time of 37.13 min. Under these optimal extraction conditions, the GBLP yield was 7.29±0.21%, which was well in agreement with the value predicted by the mathematical model.
