期刊文献+

番茄红素简便测定方法的建立 预览 被引量:155

Establishment of a New Lycopene Determination Method
在线阅读 免费下载
收藏 分享 导出
摘要 番茄红素是一种具有多种生理功能的类胡萝卜素,通常状况下与其它类胡萝卜素同时存在于多种生物体中。现有的几种测定番茄红素方法普遍存在着一定的缺陷,而HPLC测定又要受到仪器设备及标准样品的限制。作者从番茄红素及β-胡萝卜素(影响番茄红素测定的含量最多的类胡萝卜素)的紫外吸收光谱的差异入手,确定了以含2%二氯甲烷为溶剂、以502 nm吸收峰为检测波长的番茄红素测定方法,避免了其它类胡萝卜素的干扰,并将其转化为用消光系数来计算的形式。 Lycopene is a kind of carotenoids with multi biological functions and it usually presents in some kinds of plants with other carotenoids. All of the on hand convenient determination methods have defects and HPLC method is usually limited by the instruments and standard lycopene sample. Noticing the differences between lycopene and β carotene (the main kind of carotenes affecting the determination of lycopene), this paper tends to establish a convenient lycopene determination method: using 2.0% dichloromethane in petroleum as solvents to enhance the solubility of lycopene, the absorbent at 502nm as index to avoid the influence of other carotenoids such as β carotene, then transform this method to extinction coefficient method and give out the E 1% 1cm  value (E 1% 1cm =3?078).
作者 张连富 丁霄霄 Zhang Lianfu Ding Xiaolin (School of Food Science, Wuxi University of Light Industry, Wuxi, 214036)
出处 《食品与发酵工业》 CAS CSCD 北大核心 2001年第3期 51-55,共5页 Food and Fermentation Industries
关键词 番茄红素 测定 紫外分光光度法 lycopene, determine, UV visible method
  • 相关文献

参考文献3

共引文献53

同被引文献1477

引证文献155

二级引证文献921

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈