摘要
以兴安杜鹃花为原料,对兴安杜鹃花色素的提取及理化性质进行研究。通过正交试验,确定兴安杜鹃花色素提取的最佳条件为提取剂浓度2%、提取温度50℃、提取时间1h、料液比1∶10(m∶V)。兴安杜鹃花色素最大吸收波长为530nm,在酸性条件下稳定,耐热和耐光性较好,常用食品添加剂及原料和大多数金属离子对色素稳定性无不良影响;Fe3+、Cu2+可引起色素变色;色素对氧化剂较稳定;对还原剂的耐受能力较弱。
The extraction and physicochemical properties of pigment from rhododendron dauricum L were investigated. The optimal ex traction conditions on pigment by orthoKonal assay were as followed.. citric acid content 2%, radio of material/solvent 1： 10, extracting time 1 h, extracting temperature 50 ℃. The maximum absorption wavelength of pigment was 530 nm. This pigment is resistant to heat, light and common ingredients. Most metal ions have no undesirable effect on it, but Fe3＋ , Cu2＋ could change its color. The pigment is resistant to oxidizing agent, however, it was unstable to reducing agent.
出处
《食品与机械》
CSCD
北大核心
2011年第4期61-64,共4页
Food and Machinery
关键词
兴安杜鹃
色素
提取
理化性质
rhododendron dauricum L.
pigment
extraction
physicochemical properties
