Biological activities and pharmaceutical applications of polysaccharide from natural resources: A review

It is widely acknowledged that the excessive reactive oxygen species (ROS) or reactive nitrogen species (RNS) induced oxidative stress will cause significant damage to cell structure and biomolecular function, directly or indirectly leading to a number of diseases The overproduction of ROS/RNS will be balanced by nonenzymatic antioxidants and antioxidant enzymes Polysaccharide or glycoconjugates derived from natural products are of considerable interest from the viewpoint of potent in vivo and in vitro antioxidant activities recently Particularly, with regard to the in vitro antioxidant systems, polysaccharides are considered as effective free radical scavenger, reducing agent, and ferrous chelator in most of the reports However, the underlying mechanisms of these antioxidant actions have not been illustrated systematically and sometimes controversial results appeared among various literatures To address this issue, we summarized the latest discoveries and advancements in the study of antioxidative polysaccharides and gave a detailed description of the possible mechanisms

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Reviews on Mechanisms of In Vitro Antioxidant Activity of Polysaccharides

The nutritional jujube (Ziziphus jujube Mill) fruit belonging to the Rhamnaceous family grows mostly in Europe, southern and eastern Asia, and Australia, especially the inland region of northern C

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The jujube (Ziziphus jujuba Mill.) fruit: a review of current knowledge of fruit composition and health benefits.

In order to identify the chemical constituents of vegetal material it is important that an efficient extraction procedure is followed which provides both an efficient extraction and also limits the decomposition of extracted compounds during the process. Traditional methods such as distillation, solvent extraction and cold compression continue to be used but significant improvements can be achieved with the application of either ultrasound or microwave technologies. In this review we will discuss the development of these methods and review the advantages which can be achieved.

Jinwei Li

Papers

Nutritional composition of five cultivars of chinese jujube

Effects of drying methods on the antioxidant activities of polysaccharides extracted from Ganoderma lucidum

Optimization of the ultrasonically assisted extraction of polysaccharides from Zizyphus jujuba cv. jinsixiaozao

Antioxidant activities of polysaccharides from the fruiting bodies of Zizyphus Jujuba cv. Jinsixiaozao

Isolation, purification and structure of a new water-soluble polysaccharide from Zizyphus jujuba cv. Jinsixiaozao