Preparation, characterization, and antioxidant activity of gallic acid grafted purple sweet potato polysaccharide.
- 2025
- RSC advances 15(49)
- PubMed: 41180998
- DOI: 10.1039/d5ra05142h
Study Design
- Methods
- Alkali-soluble purple sweet potato polysaccharide (PSAP) conjugated with gallic acid (GA) through free radical grafting reaction; structure validated using FTIR, XRD, SEM.
In this study, alkali-soluble purple sweet potato polysaccharide (PSAP) was conjugated with gallic acid (GA) through a free radical grafting reaction. The GA-g-PSAP conjugate's structure was validated using Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. The GA content measured in GA-g-PSAP was 13.5 mg GAE per g, and antioxidant assays confirmed that GA-g-PSAP exhibited stronger radical scavenging activity and higher reducing power than native PSAP.
Research Insights
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