【摘 要】
:
本文以紫玉兰为材料,采用超声波结合酶法提取紫玉兰色素,采用单因素和正交实验研究不同酶用量、酶解时间、酶解温度、乙醇体积分数、超声时间、料液比等条件对色素提取的影响
【基金项目】
:
山东省现代蔬菜产业技术体系(SDSXDSCCYJSTX)
论文部分内容阅读
本文以紫玉兰为材料,采用超声波结合酶法提取紫玉兰色素,采用单因素和正交实验研究不同酶用量、酶解时间、酶解温度、乙醇体积分数、超声时间、料液比等条件对色素提取的影响,并确定最佳的提取工艺。同时研究光照、pH值、不同浓度NaCl、碳水化合物和金属离子对紫玉兰色素稳定性的影响。结果表明:紫玉兰色素提取的最佳工艺参数为纤维素酶用量4mg/g(花瓣湿重),按1∶15的料液比加入60%的乙醇溶液,在50℃酶解80min,超声辅助提取10min。该色素对强碱和光照不稳定,NaCl和碳水化合物对其有护色作用,Fe3+和Cu2+离子对色素稳定性影响较大。
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