东北花楸树果实红色素的提取及稳定性研究

目的]更好地开发利用花楸树这一资源。方法]以东北花楸树果实为原料,用pH值为3的乙醇于50℃下提取红色素,单因素试验研究pH值、温度、光和常用食品添加剂对该色素稳定性的影响。结果]酸化乙醇是提取花楸树果实红色素的最佳溶剂。该色素的最大吸收波长为520 nm;在酸性条件下比较稳定,放置一段时间后颜色和提取时一样鲜艳;在70℃以下比较稳定,高温下容易分解。室内自然光对该色素的稳定性没有影响。食盐、蔗糖等常用食品添加剂对该色素的稳定性没有很明显的影响。结论]花楸树果实红色素的提取工艺简单,具有较好的稳定性,是化学合成红色素的最佳替代品之一,具有较好的开发价值。

Study on the Extraction of Red Pigment from Sorbus pauhuashanensis Fruits in Northeastern China and Its Stability

Objective ] The aim of the research was to develop and utilize the nature resources of Sorbus pauhuashanensis better.Method] With S.pauhuashanensis fruits in northeastern China as materials,the red pigment was extracted by using ethanol with pH value of 3 at 50 ℃.The effects of pH value,temperature, light and common food additives on the stability of this pigment were studied through single-factor test.Result] The acidified ethanol was the best solvent for extracting red pigment from S.pauhuashanensis fruits in northeastern China.The maximum absorption wavelength of the pigment was 520 nm.It was more stable under acid conditions and its color was as vivid as in extracting and after laying for some time.It was more stable below 70 ℃ and it was easy to be decompounded at high temperature.Indoor natural light had no effect on the stability of the pigment.Common food additive such as salt,sucrose had no obvious effect on the stability of the pigment.Conclusion] Red pigment from S.pauhuashanensis fruits had simple extraction technology and better stability.It was one of best substitutes for red pigment by chemical synthesis.