期刊
ULTRASONICS SONOCHEMISTRY
卷 17, 期 4, 页码 654-661出版社
ELSEVIER
DOI: 10.1016/j.ultsonch.2009.12.005
关键词
Ultrasound; beta-Carotene; Stability; Degradation; Isomerisation; Kinetics
资金
- Chinese National Key Technologies RD [2006BAD27B06]
- Innovation of Ministry Education [707034]
The effects of factors and kinetics of all-trans-beta-carotene degradation under ultrasound treatment in a model system were investigated The compounds of degradation were also tentatively identified by HPLC-DAD. Raman and FT-IR spectroscopy. The type of solvents and temperature were important factors in determining the degradation reaction. Liquid height, ultrasonic intensity and duty cycle of ultrasound exposure only affected the rate of degradation but did not change the nature of degradation Degradation rate of beta-carotene in dichloromethane was the highest Degradation rate of beta-carotene decreased with increasing of temperature Degradation kinetics of all-trans-beta-carotene under ultrasound fitted first-order reaction at 5 to 15 degrees C, and fitted second-order reaction at 25 degrees C Degradation products included isomers 15-cis-beta-carotene. di-cis-beta-carotene and other compounds with function group of C-O. (C) 2009 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据