摘要
研究了微波提取法从草莓中提取草莓红色素的工艺路线,通过单因素分析和正交实验设计确定了最佳工艺条件,并对草莓红色素的理化性质进行了进一步研究。结果表明,用无水乙醇作为提取剂,最佳提取工艺条件为:微波功率640 W,微波处理时间40 s,料液比1∶10。pH对色素的影响明显,在酸性条件下该色素较稳定,在碱性条件下出现浑浊显现。光照稳定性差,在温度60℃～80℃时吸光度最大。Fe2+,Cu2+对色素有明显的影响,而Na+,Mg2+,Zn2+,Ca2+对色素无不良影响。
The technology of microwave extracting pigment from strawberry was studied.An improved technology was developed through condition optimization with single factor and orthogonal experiment.The physicochemical properties of strawberry red pigment was further studied.The obtained optimum extraction conditions are as follow： ethanol as extracted agents,microwave power 640 W,microwave extraction time 40 s,and liquid-solid ratio 1∶ 10.PH and Illumination had significant effort on its stability.Fe2＋,Cu2＋ had a significant effect,while Na＋,Mg2＋,Zn2＋,Ca2＋ had adverse effect.
出处
《湖北第二师范学院学报》
2012年第8期79-82,共4页
Journal of Hubei University of Education
关键词
草莓色素
微波提取
正交法
理化性质
strawberry pigment
microwave extraction
orthogonal method
physicochemical properties
