Antioxidant capacities vary substantially among cultivars of rabbiteye blueberry (Vaccinium ashei Reade)

文献类型： 外文期刊

第一作者： Wang, Shiow Y.

作者： Wang, Shiow Y.;Chen, Hangjun;Chen, Hangjun;Ehlenfeldt, Mark K.

作者机构：

关键词： Antioxidant capacity;reactive oxygen species;Vaccinium species

期刊名称：INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY （ 影响因子：3.713； 五年影响因子：3.408 ）

ISSN： 0950-5423

年卷期： 2011 年 46 卷 12 期

页码：

收录情况： SCI

摘要： Fruits from forty-two blueberry cultivars, including thirty-six rabbiteye (Vaccinium ashei Reade), three V.similar to ashei hybrid derivatives and three northern highbush (V.similar to corymbosum L.) standards, were evaluated for their antioxidant activities against peroxyl free radicals (ROO), hydroxyl radicals (OH), hydrogen peroxide (H2O2), superoxide radicals () and singlet oxygen (1O2) radicals. The differences in scavenging capacities for these radicals among forty-two selected blueberry cultivars were significant. Oxygen radical absorbance capacity values ranged from 33.8 to 118.7 mu mol Trolox equivalents (TE) g fresh wt-1, 196.1 to 518.8 mu mol TE g dry wt(-1) and 7.1 to 22.2 mu mol cm-2-surface area. Extracts from fruit of pure rabbiteye had higher levels of scavenging capacities of oxygen species , O(2)(-1) and H(2)O(2) compared to V. ashei hybrid derivatives and northern highbush blueberry standards. The rabbiteye cultivars Early May and Centurion had the highest scavenging capacity for the reactive oxygen species, not only for ROO and OH, but also for , O(2)(-1) and a strong oxidant, H(2)O(2). In contrast, Pink Lemonade (pink-fruited) had the lowest ability to inhibit free radical activity of ROO., .OH, (1)O(2), and H(2)O(2).Snowflake had the lowest scavenging capacity for . Blueberry cultivars with high antioxidant activity and radical scavenging capacity have potential to improve human health and can possibly be used as parents for future blueberry breeding programs to develop new blueberry cultivars with higher antioxidant activity.

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