作　　者： ; ; ;

机构地区： 中国科学院华南植物园

出　　处： 《食品科学》 2005年第10期66-71,共6页

摘　　要： 本文以蜀葵(Althaearosea(L.)Cavan.)紫红色花瓣为实验材料,从光、热、pH值、氧化介质、还原介质、蔗糖、食盐、防腐剂和金属离子等方面对色素的稳定性进行研究;分析了色素粗成分及有害微量元素的含量,同时对色素的食用安全性进行了小鼠急性毒性实验。结果表明:该色素属于花色苷类,耐光性好;但抗H2O2、Na2SO3较差,具有一定的耐热性;维生素C可起增色作用;食品基质蔗糖、食盐,防腐剂苯甲酸钠及多数金属离子对该色素的稳定性无不良影响,但Fe3+、Fe2+、Cu2+、Pb2+、Sn2+对色素具有不利的影响。经有害微量元素测定及毒理学实验,说明该色素可作为天然功能型色素使用。 The purple-red petals ofAlthaea rosea （L.）Cavan. were used as experimental materials to extract flower pigments. The effects of light, heat, pH value, oxide, reductor, sucrose, salt, preservative and metal ions were investigated on the stability of the pigment. The components and the amounts of harmful trace elements of the crude pigments were assayed. The ediblesafety was examined by the test of mice＇s acute toxicity. The results indicated that this pigment was of a type of anchocyanin and had a strong resistance to light but a poor capability against H202 and Na2SO3. The pigment exhibited a resistance to heat treatment to certain extent. The colour of the pigment was improved by the addition of VC. Sucrose, salt, sodium benzoate and most of metal ions had no negative effects on the stability of the pigment, but Fe^3＋, Fe^2＋, Cu^2＋, Pb^2＋ and Sn^2＋ accelerated the pigment degradation. Based on the tests of harmful trace dements and acute toxicity, it was suggested that this pigment could be safely used as a natural functional pigment.

关 键 词： 蜀葵 色素 稳定性 花色苷

领　　域： [生物学]