【摘要】 以１０％的乙醇作提取剂从牵牛花中提取出红色素，对红色索的性能进行了测试。结果表明，牵牛花色素热稳定性能好、耐光性能好，在ｐＨ≤６时比较稳定。更多还原

【Abstract】 Red coloring matter is extracted from morning glory by using10%alcohol as extractant, properties of red coloring matfer are tested and itis sliown that the coloring matter has better thermostability and light-resistance,is stable at pH<6.更多还原