剑麻叶绿素铜钠盐的制备和质量分析

本实验以抽取纤维后的新鲜麻渣为原料，乙醇为提取剂，就此提取叶绿素，经过实验摸索，尝试找出适当的叶绿素铜钠生产工艺条件。工艺实验条件为：用乙醇提取叶绿素后，在pH≈2、温度约为60℃的条件下加入10％CuSO4溶液进行铜代30min；接着用NaOH溶液调节pH≈10进行皂化约15min后，再用盐酸调节pH≈2生成叶绿素铜酸，并经纯化后，加入氢氧化钠溶液成盐；最后，经90℃水浴烘干得墨绿色带金属光泽的产品。产品质量基本符合国家食品添加剂卫生标准（QBIT3783—1999）。

The Preparation and Quality Analysis on Sisal Chlorophyll Sodium Copper

With the fresh sisal dregs without fiber as raw material, aleohol as extraetor, the chlorophyll is extracted in the test. And the lest is designed to find the proper ways to produce chlorophyll sodium copper. The experimental conditions： 10%CuSO4 solution is added after chlorophyll is extracted in conditions that pH ≈2, temperature is around 60 ℃; then NaOH solution is used for saponification, pH ≈ 10; after 15mins, Hydrochloric acid is used to produce chlorophyll, pH ≈2, after purification, sodium hydroxide is added to make the salt; in the last process, 90 ℃ water is used to dry to make the product that is dark green and with metal luster. The product quality basically meet the needs of the national quality standards for food additives（QB/T 3783--1999）.