摘要
研究枸杞色素的提取工艺及其稳定性。结果表明,提取色素的最大吸收波长在450nm。提取该色素的最佳工艺条件为:在50℃下,用无水乙醇,以1g∶12mL的料液比,浸提1h。该色素具有良好的热稳定性;在酸性较强的环境下色素受光降解率较大,在弱酸性及中性偏碱的环境下受光降解率较小;该色素在3.8<pH<9.9的环境下较稳定;Na+和Zn2+对色素几乎无影响,而Al3+会降低色素的稳定性。
The extraction craft and stability of Fructus Lycii pigment were studied. The result indicated that the pigment has the strongest absorption peak at 450 nm, the optimum extraction condition was： the absolute alcohol, the 1 g： 12 mL material fluid ratio, and extracted for 1 hour under 50℃. The pigment has a good thermostability; the degeneration rate under the strong acid condition was bigger than the weak acid condition and the alkalescence condition. The pigment was stable at 3.8 〈pH〈9.9 .Na^＋ and Zn^2＋ nearly do not have the influence to the pigment, but Al^4＋ can reduce the pigment stability.
出处
《食品研究与开发》
CAS
北大核心
2009年第2期183-187,共5页
Food Research and Development
关键词
枸杞
色素
提取工艺
稳定性
Fructu Lycii
pigment
extraction process
stability
