食品科学2012，Vol.33Issue(22)：90-94,5.
红花龙胆花色素的提取及性质
Extraction and Properties of Pigments from Gentiana rhodantha Franch. ex Hemsl. Flowers
摘要
Abstract
In this study, different solvents were compared for their effectiveness in extracting pigments from flower petals of Gentiana rhodantha Franch. ex Hemsl.. Seventy percent ethanol was found to be the best solvent for the extraction of pigments. The crude pigment extract had maximum absorption at 531 nm and showed a poor tolerance to UV, high temperature, VC, hydrogen peroxide and sodium sulfite. It was not almost affected by glucose, sucrose and citric acid and only slightly affected by Na+, Ca2+and A13+, but Fe2+caused a noticeable hyperchromic effect. The red color of the pigments was maintained at pH levels equal to or less than 3 but completely damaged in neutral or alkaline environments. Based on these results, we speculated that the pigments belong to the class of anthocyanins which contains phenolic hydroxyl groups.关键词
红花龙胆/花色素/提取/性质Key words
Gentiana rhodantha Franch. ex Hemsl./lfower pigments/extraction/properties分类
轻工纺织引用本文复制引用
王立志,化雪艳,刘文柱,唐克华..红花龙胆花色素的提取及性质[J].食品科学,2012,33(22):90-94,5.基金项目
湖南省高校科技创新团队支持计划项目(湘教通(2010)212号) （湘教通(2010）
