Quality Evaluation of (wolfberry) from Different Regions in China Based on Polysaccharide Structure, Yield and Bioactivities

Overview

Journal Chin Med

Publisher Biomed Central

Specialty Biomedical Engineering

Date 2019 Nov 14

PMID 31719838

Citations 18

Authors

Ying Wang

Hongyu Jin

Xiaoxv Dong

Shuang Yang

Shuangcheng Ma

Jian Ni

Affiliations

Soon will be listed here.

Abstract

Background: (wolfberry) has been widely cultivated in China, particularly in northwest regions. However, the fruit size and taste of from different habitats are quite different. Traditionally, only the fruit of produced in Ningxia province is recorded as an authentic herb, although the detailed mechanism responsible for this remains obscure. Polysaccharides are considered major active ingredients in which is crucial for its quality evaluation.

Methods: In this study, we assessed the yield, monosaccharide composition, molecular weight, and conformation of polysaccharides (LBPs) collected from different regions of China. The antioxidant and immune activities of LBPs were also determined as its quality indicator.

Results: Our results showed that the similarity values of monosaccharide composition were larger than 0.926, and the w of the two fractions (peaks 1-2) in LBPs were ranging from 1.36 × 10 to 2.01 × 10 (peak 1), and 6.85 × 10 to 10.30 × 10 (peak 2) which indicated that the structure of LBPs were similar. In addition, results showed that there was no significant difference in antioxidant and immune activities of nine LBPs from different regions. However, the yield of LBPs from Qinghai Province (low atmospheric temperature, high altitude) was significantly lower ( < 0.05) than those collected from Xinjiang and Ningxia province.

Conclusions: These data suggested that the produced in Ningxia and Xinjiang maybe more suitable as materials for medicines and functional foods. This study also provides a reference for improving the quality control standard of LBPs.

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