...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Food Chemistry >Photooxidation of phytosterols in oil matrix: Effects of the light, photosensitizers and unsaturation degree of the lipids
【24h】

Photooxidation of phytosterols in oil matrix: Effects of the light, photosensitizers and unsaturation degree of the lipids

机译：油基质中植物甾醇的光氧化作用：光，光敏剂和脂质的不饱和度的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work we studied the stability of phytosterols in oil matrix under photooxidation (with different light intensity, existence/absence of photosensitizers and unsaturated lipids). Results revealed that the photooxidation of phytosterols fit a first order kinetic model (R-2 0.96). When the intensity of light was higher, the rate constants increased and phytosterols oxidized faster. The progress could be also accelerated by photosensitizers, whereas the unsaturated matrix inhibited the formation of oxidation products. Phytosterols oxidation products (POPs) were detected in all model matrix samples. 7 beta-hydroxy was the main oxidation products in most cases during the whole treatment under light, which represented about one third of the total phytosterol oxides, followed by 7 alpha-hydroxy, 5 beta, 6 beta-epoxy, 7-keto, 5 alpha, 6 alpha-epoxy and 6 beta-hydroxy. And the oxidation at C7 on the Ring B of steroid nucleus was the most important pathway of phytosterols photooxidation.
机译：在这项工作中，我们研究了光氧化作用下植物甾醇在油基质中的稳定性（具有不同的光强度，是否存在光敏剂和不饱和脂质）。结果表明，植物甾醇的光氧化符合一级动力学模型（R-2> 0.96）。当光强度较高时，速率常数增加，植物甾醇氧化得更快。光敏剂也可以促进这一进展，而不饱和基体则抑制了氧化产物的形成。在所有模型基质样品中都检测到了植物甾醇的氧化产物（POPs）。在整个光照条件下，大多数情况下，7β-羟基是主要氧化产物，约占植物甾醇氧化物总量的三分之一，其次是7α-羟基，5 beta，6β-环氧，7-酮，5 α，6α-环氧和6β-羟基。类固醇核B环的C7处的氧化是植物甾醇光氧化的最重要途径。

著录项

  • 来源
    《Food Chemistry》 |2019年第1期|162-169|共8页
  • 作者

    Zhao Yajing; Yang Bowen; Xu Tao; Wang Mengmeng; Lu Baiyi;

  • 作者单位

    Zhejiang Univ, Ningbo Res Inst,Fuli Inst Food Sci,Coll Biosyst E, Minist Agr & Rural Affairs,Zhejiang Key Lab Agrof, Key Lab Agroprod Nutr Evaluat,Key Lab Agroprod Po, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Ningbo Res Inst,Fuli Inst Food Sci,Coll Biosyst E, Minist Agr & Rural Affairs,Zhejiang Key Lab Agrof, Key Lab Agroprod Nutr Evaluat,Key Lab Agroprod Po, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Ningbo Res Inst,Fuli Inst Food Sci,Coll Biosyst E, Minist Agr & Rural Affairs,Zhejiang Key Lab Agrof, Key Lab Agroprod Nutr Evaluat,Key Lab Agroprod Po, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Ningbo Res Inst,Fuli Inst Food Sci,Coll Biosyst E, Minist Agr & Rural Affairs,Zhejiang Key Lab Agrof, Key Lab Agroprod Nutr Evaluat,Key Lab Agroprod Po, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Ningbo Res Inst,Fuli Inst Food Sci,Coll Biosyst E, Minist Agr & Rural Affairs,Zhejiang Key Lab Agrof, Key Lab Agroprod Nutr Evaluat,Key Lab Agroprod Po, Hangzhou 310058, Zhejiang, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Phytosterol; Photooxidation; Light intensity; Photosensitizer; Unsaturation degree;

    机译：植物甾醇;光氧化;光强度;光敏剂;不饱和度;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号