In Vitro Antioxidant Activity of Bee Pollen Extraction of Twelve Common Species from China

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外文摘要：The phenolic extraction were prepared by ultrasonic assisted extraction in aqueous methanol solution, and the total concentrations of phenolics, flavonoids were measured spectrophotometry with twelve common species of bee-collected pollen cultivated, in China. Their in vitro antioxidant capacities were evaluated through assays of radical scavenging capacity of l,ldiphenyl-2-picrylhydrazyl (DPPH), 2,2'-Azino-bis(3ethylbenzothiazoline-6-sulphonic acid diammonium salt (ABTS), and ferric ion reducing antioxidant power (FRAP), respectively. Great variability was found among the samples, the highest levels of phenolics and flavonoids were both determined in bee pollen of Brassica napus L., whereas the lowest contents were obtained in Nelumbo nucifera Gaertn. The antioxidant activity of Schisandra chinensis pollen was the strongest of the twelve cultivars, while the activity of Nelumbo nucifera Gaertn was the weakest. The significant positive correlations were observed between total phenolic contents, total flavonoid contents and antioxidant activities. These results indicated that most of Chinese bee pollens, rich in phenolics, had good pre-antioxidant effects and could be beneficial for human health.

外文关键词：

Chinese Bee PollenPhenolicsFlavonoidsAntioxidant capacityDPPHABTSFRAP

作者：

Kai Yang、Xingqian Ye、Chen Xing、Peilong Sun

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作者单位：

Department of Food Science and Nutrition Zhejiang University Hangzhou, People's Republic of China

College of Biology and Environmental Engineering Zhejiang University, of Technology Hangzhou, People's Republic of China

会议名称：

International conference on agricultural engineering and food engineering

会议地点：

Harbin(CN)

会议母体文献：

The 2012 international conference on agricultural engineering and food engineering

页码：

940-943

出版时间：

2012