摘要
通过单因素和正交试验研究了玫瑰花红色素的提取工艺.结果表明:玫瑰花红色素属花青素类,提取的最佳条件为:70%(V/V)乙醇为溶剂、pH值为1、物料比(m/V)为1∶8、浸提温度60℃、时间为1 h.稳定性研究表明玫瑰花红色素对光和热敏感,在不同的pH值下表现出不同的颜色;金属离子Na+、Zn2+、Ca2+对该色素无明显影响,Cu2+使该色素颜色向黄色变化,而Fe3+则会使玫瑰花红色素的颜色发生较大的改变;玫瑰花红色素对还原剂Na2SO3较稳定,对氧化剂H2O2则很敏感.
Effects of some factors on extraction of red pigment from fresh roses and stability of pigment were studied. The results show that, the rose pigment belongs to anthocyanin. The optimum extracting conditions were： pH value is 1 ,the concentration of ethanol is 70% （ V/V）, the ratio of liquid and solute is 1 ： 8, the temperature is 60℃, and the extracting time is 1 h. Rose pigment is sensitive to light and heat, and it shows different color in different condition of pH value. The effects of metallic ions Na^＋ 、Zn^2＋、Ca^2＋ on the pigment are low, but Cu^2＋、 and Fe^3＋ have destroyed effect on the pigment. Rose pigment is steady when reducer Na2SO3 is added, but the color fades when oxidizer H2O2 exits.
出处
《华南师范大学学报（自然科学版）》
CAS
2007年第4期102-109,共8页
Journal of South China Normal University(Natural Science Edition)
基金
广东省自然科学基金资助项目(003062)
广东省科技计划资助项目(2003C20406)
广州市海珠区科技计划资助项目(2004-Z-46)
