| 摘要: |
| 以新引进的美国黑宝石李子皮加工后的皮渣为原料,系统研究了提取溶剂、温度、时间、pH值等因素对提取率和红色素稳定性的影响。结果表明,最佳浸取工艺条件是:pH=2的体积分数50%乙醇,室温下(20～25 ℃)浸提1.5～2 h;红色素对常用的几种食品添加剂较稳定,耐光性较强,有一定的耐热和抗氧化性,但抗还原性较差。 |
| 关键词: 李子皮 食用色素 红色素 提取工艺 |
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| Way to extract haematochrome from plum skin and its stability |
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| Abstract: |
| Based on the residue skin of the newly imported American Black Treasure plum after further processing,the factors as solvent,temperature,time pH,etc which affect the extraction rate and stability of haematochrome are systematically analyzed in the paper.The condition for the best extraction technology,as is resulted from this study,is pH=2 at room-temperature with 50% ethanol for 1.5～2 h.The haematochrome is stable to several food additives with strong endurance,heat-durability and oxidation resistance,but poor in anti-reducibility. |
| Key words: plum skin edible pigment haematochrome extraction technology |
