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Updated: Jan 20, 2026

Comparative Study on the Polysaccharide Contents and Antioxidant Activities of Hippophae rhamnoides subsp. sinensis and Hippophae gyantsensis
Published on: August 15, 2025
The antioxidant activities of carboxymethylated garlic polysaccharide and its derivatives
1Active Carbohydrate Research Institute, Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University, Chongqing 401331, China.
Abstract:
The garlic polysaccharide (P) was extracted with the hot water, and the temperature was 80 °C, solid-liquid ratio was 1:7 (m/v), and extraction time was 150 min. In the experiment, carboxymethylated garlic polysaccharide (CM) was prepared with chloroacetic acid, and carboxymethylated-sulfated garlic polysaccharide (CMS) and carboxymethylated-phosphorylated garlic polysaccharide (CMP) were prepared with CM. The sugar content of CM and its derivatives were determined by the phenol‑sulfuric acid method, and the degree of substitution of CM and its derivatives were characterized. Vc was used as a control to determine the four antioxidant activities (hydroxyl radical scavenging ability, superoxide anion scavenging ability, reducing ability, anti-lipid peroxidation ability) of CM and its derivatives. It showed that CM and its derivatives were potential antioxidants.
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