期刊论文

中文

经济林研究

1003-8981

2008

26

1

37-40

10.3969/j.issn.1003-8981.2008.01.008

本校为第一机构

以新鲜红地球葡萄为原料,探讨其天然色素的提取工艺,并通过正交实验得出了红地球葡萄色素的最佳提取工艺条件：80%的乙醇作提取剂,pH值为3,提取温度为70℃,料液比为1∶9。并对红地球葡萄色素的稳定性进行了研究,结果表明：红地球葡萄色素在pH为2-6时相对稳定,耐热性较好,耐光性也较好;金属离子对色素稳定性有一定的影响,其中Cu^2＋、Fe^3＋、Fe^2＋对色素的色泽有较大的破坏作用,但M g2＋对红地球葡萄色素有稳定作用;氧化剂H2O2和还原剂N a2SO4对色素有一定的破坏作用。

Extraction process of natural pigment was researched, taken fresh Red Globe Grape peel as materials. The optimum process conditions of extraction were gained by orthogonal experiment. The optimum process conditions were as follows： 80% ethanol as extractant, pH value was 3, extraction temperature was 70℃, and the ratio of material to liquid was 1 ： 9. As well as, the stability of pigment in Red Globe Grape was researched. The results showed that pigment remained stable and exhibited good heat-resisting and light-resisting properties at pH 2-...