Physico-chemical properties and antioxidant capacity of different jujube (Ziziphus jujuba Mill.) cultivars grown in loess plateau of China
Physico-chemical properties and antioxidant capacity of different jujube (Ziziphus jujuba Mill.) cultivars grown in loess plateau of China
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DOI：
10.1016/j.scienta.2011.06.005
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发表时间：
2011-08-26
影响因子：
4.3
通讯作者：
Wang, Min
中科院分区：
文献类型：
--
作者：
Gao, Qing-Han;Wu, Pu-Te;Wang, Min
对黄土高原主要枣品种骏枣、灵宝枣、金枣、赞皇枣和梨枣的理化性质和抗氧化能力进行了测定。分析的成分包括果实产量、水分含量、单果总质量、pH、可滴定酸（TA）、还原糖、总糖、总可溶性固形物（TSS）、抗坏血酸、总酚含量、总黄酮含量和几种纯酚类化合物。分析结果显示，这些枣品种中的抗坏血酸和酚类物质含量高于一些常见水果。以还原力、β-胡萝卜素漂白、2，2-二苯基-1-苦基氢甲酰（DPPH中心点）、和ABTS中心点（+）清除自由基的实验结果表明，灵宝藻提取物具有较好的清除自由基的能力，是一种具有商业价值的天然抗氧化剂。除果实中芦丁含量外，其他测定指标在枣品种间均存在显著差异。说明品种是影响枸杞理化性质和抗氧化活性的主要因素。(C)2011 Elsevier B. V.保留所有权利。
The physico-chemical properties and antioxidant capacity of the five main jujube varieties: Junzao, Ling-baozao, Jinzao, Zanhuangzao and Lizao collected from loess plateau of China were determined. The analyzed components included fruit yield, moisture content, total mass per fruit, pH, titratable acidity (TA), reducing sugars, total sugars, total soluble solids (TSS), ascorbic acid, total phenolics content, total flavonoids content and several pure phenolic compounds. The output of the analyses showed higher amounts of ascorbic acid and phenolics in these jujube varieties than in some common fruits. The antioxidative capacity of the jujube extracts, evaluated with the reducing power, the beta-carotene bleaching, the 2,2-diphenyl-1-picrylhydracyl (DPPH center dot.), and the 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonicacid) (ABTS center dot(+)) scavenging methods, showed that the antioxidant activity of the extracts of Lingbaozao was excellent for free radical scavenging and a potent natural antioxidant of commercial value. Statistically significant differences were observed between jujube cultivars investigated with regards to the measured parameters except rutin content of fruit. These results demonstrated that the cultivar was the main factor which influences the physico-chemical properties and antioxidant activity of jujubes. (C) 2011 Elsevier B.V. All rights reserved.