AI Article Synopsis
- The study focused on extracting leaf polysaccharides (LLP) using a technique called ultrasound-microwave combined extraction (UMCE) and optimized the extraction conditions using response surface methodology (RSM).
- Three different polysaccharide fractions with varying molecular weights were obtained through gradient ethanol precipitation.
- The polysaccharide samples exhibited effective antioxidant properties and were able to inhibit enzymes linked to carbohydrate digestion, indicating the potential of LLP as a nutraceutical or phytopharmaceutical for managing hyperglycemia or diabetes.
Article Abstract
Ultrasound-microwave combined extraction (UMCE), gradient ethanol precipitation, chemical characterization, and antioxidant and hypoglycemic activities of leaf polysaccharides (LLP) were systematically studied. The optimal conditions for UMCE of LLP achieved by response surface method (RSM) were as follows: microwave time of 16 min, ultrasonic time of 20 min, particle size of 100 mesh, and ratio of liquid to solid of 55:1. Three novel polysaccharide fractions (LLP, LLP, LLP) with different molecular weights were obtained by gradient ethanol precipitation. Polysaccharide samples exhibited scavenging capacities against ABTS and DPPH radicals and inhibitory activities against α-glucosidase and α-amylase. Among the three fractions, LLP possessed relatively high antioxidant and hypoglycemic activities in vitro, which showed a potential for becoming a nutraceutical or a phytopharmaceutical for prevention and treatment of hyperglycemia or diabetes.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180117 | PMC |
| http://dx.doi.org/10.3390/molecules28093880 | DOI Listing |
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