摘要
采用丙酮溶液提取茎瘤芥叶片中的叶绿素,利用紫外-可见分光光度计研究光照、温度、pH值、氧化剂、还原剂和金属离子对茎瘤芥叶片叶绿素稳定性的影响。结果表明:茎瘤芥叶片叶绿素的稳定性受到多种因素的影响,光照、H2O2、VC、酸碱性条件以及Mg2+、Cu2+、Fe3+、Ca2+等金属离子均影响茎瘤芥叶片叶绿素的稳定性。在10～70℃茎瘤芥叶片叶绿素稳定,80℃茎瘤芥叶片叶绿素稳定性下降。中性条件、Na2SO3的存在均对茎瘤芥叶片叶绿素有增色作用。
The effects of light,temperature,pH,oxidants,reductants,and metal ions on the stability of leaf chlorophyll from tumorous stem mustard were explored.Chlorophyll was extracted by acetone and determined by U-3010 ultraviolet and visible spectrometer.The results showed that the stability of chlorophyll from the leaves of tumorous stem mustard was affected by many factors including light,H2O2,vitamin C,acid,alkali and several metal ions.The chlorophyll was stable when temperature was 10-70 ℃,and temperature over 80 ℃ could result in a decrease of its stability.In addition,neutral condition and Na2SO3 revealed a hyperchromic effect on the chlorophyll.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2011年第19期50-53,共4页
Food Science
基金
重庆市教育委员会科技项目(KJ101316)
关键词
茎瘤芥
叶绿素
稳定性
tumorous stem mustard
chlorophyll
stability
