APP下载

柠檬酸发酵废渣中氨基葡萄糖盐酸盐提取工艺优化

2019-05-13朱晓萍颜毛毛权海峰檀利军张慎李慧

科技视界 2019年8期

朱晓萍 颜毛毛 权海峰 檀利军 张慎 李慧

【摘 要】本研究以柠檬酸发酵废渣为原料,选提取温度、盐酸浓度、提取时间、料液比为考察因素,以提取率作为考察指标,进行单因素试验,再利用正交试验法研究制备氨基葡萄糖盐酸盐工艺的最佳提取条件。研究表明:25%盐酸,废渣与盐酸料液比1:2,85℃下酸解4h,此条件下,氨基葡萄糖盐酸盐粗品得率为2.14%,说明该提取工艺实际可行,对柠檬酸废渣中氨基葡萄糖盐酸盐的回收利用具有重要意义。

【关键词】柠檬酸发酵废渣;氨基葡萄糖盐酸盐;酸解;正交试验

中图分类号: TQ460.6文献标识码: A文章编号: 2095-2457(2019)08-0017-003

DOI:10.19694/j.cnki.issn2095-2457.2019.08.006

【Abstract】In this study, Fermentation residue from citric acid was used as raw material. The investigation factors was chosen as temperature, concentration of hydrochloric acid, time and ratio of material to liquid; The single factor experiment was conducted with the extraction rate as the evaluation index. The optimum extraction conditions for the preparation of glucosamine hydrochloride were studied by orthogonal test. The results showed that 25% hydrochloric acid, the ratio of waste residue to hydrochloric acid was 1:2, and the yield of crude glucosamine hydrochloride was 2.14% under this condition. It shows that the extraction process is practical and feasible, and it is of great significance for the recovery and utilization of glucosamine hydrochloride from citric acid waste residue.

【Key words】Citric acid fermentation residue; Glucosamine hydrochloride; Acidolysis; Orthogonal test

氨基葡萄糖,又称氨糖,其常以N-乙酰基衍生物的形式存在于微生物,动物中。氨糖的化合物常以盐酸盐、硫酸盐和N-乙酰氨基葡萄糖的形式存在[1]。氨基葡萄糖盐酸盐(Glucosamine Hydrochloride,GAH)是甲壳素的一种衍生物,浓盐酸环境中,甲壳素可水解生成GAH,后经中和、脱盐、脱色等步骤得到白色结晶。GAH作为化工合成原料,具有促进抗生素药注射的功能, 也可供糖尿病人作营养助剂,此外还可用于化妆品、饲料添加剂和食品添加剂[2];GAH性质稳定,具有抗炎、抗氧化、防腐、抗菌、抗腫瘤等多种作用,同时也是合成有关药物的重要原料,已经在医药、生物技术、纺织、食品、化妆品和饲料添加剂等领域得到了广泛的应用[3-4]。

柠檬酸是一种重要的有机酸,也是世界上厂里较大的有机酸产品之一,目前发酵法生产柠檬酸时常使用黑曲霉。我国是柠檬酸生产大国,从发酵生产柠檬酸工厂废渣——黑曲霉菌丝体中提取GAH,不仅可降低成本,且为综合利用发酵废渣提供一条新途径[5-6]。……

登录APP查看全文