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光皮木瓜籽油体外抗氧化活性比较研究

引用

食品工业 2018年第11期39卷 32-34页

作者：纪桢白巧秀田娇孟现星王硕安康学院化学化工学院化工系安康725000

试验采用POV测定、DPPH自由基清除2种体外抗氧化活性测定方法,评价并比较光皮木瓜籽油、橄榄油、鳄梨油和芥花籽油的抗氧化活性。结果显示,橄榄油的抗氧化能力最高,芥花籽油次之,鳄梨油和光皮木瓜籽油最低。

关键词： POV值 DPPH 光皮木瓜籽油橄榄油鳄梨油芥花籽油

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Pollen-mediated gene flow in Chinese commercial fields of glufosinate-resistant canola (Brassica napus)

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Chinese Science Bulletin 2008年第15期53卷 2333-2341页

作者： CAI Li ZHOU BiWen GUO XueLan DONG CaiHua HU XiaoJia HOU MingSheng LIU ShengYi Department of Plant Science and Technology Huazhong Agricultural University Wuhan 430070 China Key Lab of Genetic Improvement for Oil Crops of the Ministry of Agriculture Oil Crops Research Institute Chinese Academy ofAgricultural Sciences Wuhan 430062 China

One of the most pressing issues surrounding transgenic oilseed rape cultivation is the potential impact of GM genes entering neighboring non-GM oilseed rape plants, related weeds or closely related wild relatives. Following the principle of a case-by-case for transgenic crop safety assessment, we designed experiments to study pollen-mediated gene flow from herbicide-resistant transgenic oilseed rape to Chinese commercial varieties. The pollen dispersal was detected as the progeny of recipient plants that were identified as glufosinate resistant. The results indicated that pollen dispersal occurred up to 2000 m and its rate sharply decreased as the distance from the pollen source increased. However, the rate of long-distance pollen dispersal from 33 to 2000 m was less than 0.015% and did not present a gradual decrease, indicating the randomization of dispersal and pollination. Most pollen dispersed within a 4.5 m area around the transgenic pollen source plot, with a maximum of 1.19% at the sampling site of 1.4 m. Wind direction significantly affected the direction and the distance of pollen dispersal, resulting in the more and farther dispersal in southwest direction. However, the number of potentially pollinating bees was not correlated with direction and distance from the pollen source plot, suggesting that bee density and distribution would not contribute to the differences in pollen dispersal among different directions. This paper is the first report on research in a large-scale experiment of pollen-mediated gene flow un-der the China’s environmental conditions and provided scientific evidence for the effective commer-cialization of transgenic oilseed rape and its safe management. Our results also provided important data on pollen spatial distribution pattern.

关键词：芥花籽油除草剂抗体花粉扩散生物安全性

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