【摘要】 以70%乙醇浸提商陆浆果红色素,采用吸光度值的变化和光谱扫描法研究了光照、温度和pH值对色素稳定性的影响,测定了商陆红色素的还原力、清除DPPH.和OH.的能力.结果表明:商陆红色素在pH3~9较稳定,对光和高温不稳定,因此可以作为冷饮食品的着色剂开发;商陆红色素有一定的还原力和抗氧化性,值得深入研究.更多还原

【Abstract】 The red pigment was extracted from Phytolacca Americana ripe berry with 70% alcohol.Its stability to light,temperature and pH value were examined using the absorpitiometry and absorption spectrum methods,and its reduction ability and antioxydation were tested with DPPH· and ·OH.The results showed that the pigment is stable to pH value3~9,but unstable to light and high temperature,so it can be used in the cold food as coloring agent;the pigment which has reduction ability and antioxidation is worth to research deeply.更多还原