盐生植物翅碱蓬花青素类物质研究

Studies on the properties of the anthocyanidin in Suaeda hete-roptera of halophyte

目的对来自盐生植物翅碱蓬花青素类活性物质的性质进行研究。方法采用红外和可见光谱分析,颜色反应、稳定性分析、金属离子影响分析等方法进行了研究。结果翅碱蓬色素可见光区最大吸收波长545.5nm,具有花青苷类特征。翅碱蓬色素的颜色反应和不同酸度溶液中的显色性质,与花青素类化合物相近。翅碱蓬色素溶于水,甲醇,乙醇,微溶于丙酮,不溶于石油醚。对自然光的稳定性差。温度升高对色素稳定性不利。在氧化剂和还原剂存在下,氧化还原稳定性不高。Fe2+,Mg2+、Cu2+、Mn2+金属离子对色素颜色影响不明显。结论翅碱蓬色素为水溶性花青素类色素,色素本身易于氧化,翅碱蓬花青素可以作为天然食用色素的重要来源。

Objective The properties of anthocyanins in Suaeda heteroptera Kitag. were investigated. Methods Properties of the extract were determined via spectral absorption, physco-chemical analyses. Results Spectrogram results showed that the red pigment was classified to anthocyanins. The color properties of the pigment were similar to plant anthocyanins and pH changes could affect the tone of the color. The pigment was soluble in water, alcohol; slightly soluble in acetone; and insoluble in petroleum ether. Under natural light, degradation of the pigment could be accelerated. High temperature was disadvantage to the pigment stability. Redox stability was very low. Fe^2＋, Mg^2＋, Cu^2＋ and Mn^2＋ did not significant affect the tone of the color. Conclusion The pigment from Suaeda heteroptera Kitag. is water-soluble anthocyanins, and may be important nature edible pigment resource.