摘要
Abstract
Objective: The effects of different environmental conditions on the stability of the red pigment from Polygonum lapathifolium Lium fruit were studied. Methods:Using pH2 80％ ethanol as extracting solvent,and then the pigment solvent was scaned between 400～700nm, at the same time the temperature, pH, H2 O2,Vc, sugar and metal ions on the stability of pigment were probed. Results: The red pigment had four absorption wavelength and which were 444,475,519,665nm. The red pigment from Polygonum lapathifolium Lium fruit could endure heat. pH had great influence on the pigment.H2O2 could made the red pigment fade, most metal ions had no effect, but Fe2+ ,Fe3+ and a small number of metal ions had impact on the pigment.关键词
酸模叶蓼果实/红色素/环境条件/稳定性Key words
Polygonum lapathifolium Lium fruit/ red pigment/ environmental conditions/ stability分类
轻工纺织
