甘氨酸螯合铁的合成工艺_林萍.pdfVIP

第23 卷第2 期 无锡 轻 工大学 学 报 Vol.23　No.2 　 　　　　　　　 2004 年3 月 Journal of Wuxi University of Light Industry 　　　　　　 Mar.　2004 :1009-038X(2004)02-0053-05 　 甘氨酸螯合铁的合成工艺 林 萍, 　宋常英, 　张晓鸣 (江南大学食品学院, 江苏无锡214036) 　:以氯化亚铁和甘氨酸为原料,研究了甘氨酸螯 铁的 成工艺条件.结果表明,pH 值、配 位比以及抗氧化剂用量对产品组成和得率有很大影响.确定了螯 的最适条件为:pH 值为5.5、配 位比为4 ∶1.采用有机溶剂萃取法,使甘氨酸螯 铁在无水乙醇中以沉淀的方式析出, 实现甘氨酸 螯 铁与无机铁的分离.讨论了萃取时有机溶剂用量对产品得率的影响, 在无水乙醇与滤液的体 积比为9 ∶1 时,亚铁得率最高. :甘氨酸;铁;螯合;有机溶剂 :Q 517 :A The Synthesis Conditions of Ferrous Glycinate LIN Ping, 　SON Chang-ying, 　ZHAN Xiao-ming (School of Food Science and Technology, Southern Yangtze University, Wuxi 214036, China) Abstract:The synthesizing conditions of ferrous glycinate chelateusing ferrous chloride and glycine as raw materials were studied in this paper.The result showed that the constitution of the product and the recovery of ferrous were considerably affected by pH, the molar ratio of glycine to ferrous, and the amount of antioxidant.The optimal reaction condition is pH 5.5, the molar ratio of 4:1.The filtrate was treated with organic solvent and the ferrous glycinate chelate was precipitated in ethyl alcohol absolute.Consequently, the chelate can be purified and analyzed by common chemical method. Extraction solvent was also evaluated.The effect of volume ratio of organic solvent to filtrate on the recovery of ferrous was studied.The highest recovery rate of ferrous was obtained at 9:1 of ethyl alcohol absolute to filtrate of ferrous glycinate. Key ords:glycine;ferrous chloride;chelate;organic solvent 　　, , , 、. 、 、. [3,4]