单 位：
中国林业科学研究院林产化学工业研究所;中国林业科学研究院资源昆虫研究所
摘 要：
研究紫胶红色素在不同环境下的稳定性,结果表明:紫胶红色素具有较好的光、热稳定性,室外阳光下28d保存率高于95%;在4℃低温至100℃高温范围内均有较好的稳定性,8h保存率均超过93%;紫胶红色素的抗氧化性较高,而在一定的还原剂条件下保存率略有降低;常用食品添加剂对紫胶红色素有增色及护色作用;Fe3+、Fe2+、Ca2+、Sn2+离子可破坏色素水溶液稳定性,而其他金属离子对稳定性影响不明显;紫胶红色素在酸性环境下保存率较高,当pH值增大至碱性范围会使其显著失稳。
译 名：
Study on Stability of Lac Red Pigment
作 者：
ZHANG Hong1,2,FANG Gui-gan1,ZHENG Hua2,CHEN Jun2,TANG Li-ying2,GAN Jin2 (1. Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, China; 2. Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, China)
关键词：
lac red pigment;lac acid;stability
摘 要：
Stability of lac red pigment was investigated under various conditions. Results suggested that lac red pigment had excellent stability to light and heat. Preservation rate of lac red pigment was higher than 95% at outdoor sunlight for 28 days. Excellent stability of lac red pigment was observed in the range of 4-100 ℃ and preservation rate of lac red pigment was higher than 93% after high-temperature treatment for 8 hours. High antioxidant capability of lac red pigment was also determined. Moreover, commonly used food additives had hyperchromic and color retention functions to lac red pigment. Although Fe3+, Fe2+, Ca2+ and Sn2+ damaged the stability of lac red pigment in water, other metal ions did not interrupt its stability. Lac red pigment remained higher preservation rate in acidic environment, however, pH increase resulted in a gradient loss of stability of lac red pigment.
