文献类型：期刊文献

英文题名：Rat intestinal homogenate and pancreatic juice can induce the Z-isomerization of all-E-lycopene in vitro

作者：Huang J.; Hui B.

第一作者：Huang J.

机构：[1]Department of Food Science, Beijing Union University, Beijing, 100023, China;[2]COFCO Nutrition and Health Research Institute Co.,Ltd., Beijing, 102209, China

第一机构：北京联合大学生物化学工程学院食品科学系

通讯机构：[1]Department of Food Science, Beijing Union University, Beijing, 100023, China|[11417146]北京联合大学生物化学工程学院食品科学系;[11417]北京联合大学;[1141726]生物化学工程学院;

年份：2020

卷号：10

期号：1

外文期刊名：Scientific Reports

收录：Scopus(收录号：2-s2.0-85086651258)

语种：英文

摘要：Lycopene is one of the carotenoids often consumed by humans in their diet. Although lycopene exists mainly in the form of the all E-isomer in foods, the considerable quantity of its Z-isomers is found in the human plasma and liver. This observation suggested that the lycopene all-E-isomer was converted into Z-isomers in the human body. In this study, the Z-isomerization of the all-E-isomer was induced in vitro by the pancreatic juice and small intestinal homogenate of male rats under the conditions of 37 °C, pH = 7.5, nitrogen and darkness, as well as shaking. After 2 hours, the proportion of the all E-isomer decreased to 25% and Z-isomer amounts increased relatively. The converted products were identified as 5, 9, and 11 Z-isomers by electronic absorption spectroscopy and mass spectrometry (MS). The observations from this experiment suggested that the Z-isomerization site of the lycopene all E-isomer was located in the small intestinal wall of the rat. ? 2020, The Author(s).