利用废弃革屑制备氨基酸肥料的研究  

Preparation of amino acid fertilizer with chrome shavings

作　　者：刘娜[1] 高凌峰[1] 丁志文[1] 程正平[1] 

机构地区：[1]中国皮革和制鞋工业研究院,北京100016

出　　处：《中国皮革》2015年第17期27-31,共5页China Leather

基　　金：863项目(2011AA06A108);863项目(2013AA065701)

摘　　要：利用废弃革屑制备氨基酸肥料,首先通过碱水解提取大分子胶原蛋白,然后通过酸水解将大分子胶原蛋白水解成便于植物吸收的小分子肽和氨基酸。最佳酸解条件为:液比1∶1、水解温度120℃、硫酸加入量与胶原蛋白粉的比例为1∶1、水解时间为12h,制备的硫酸铵型氨基酸肥料中的游离氨基酸含量为32.4%,高出行业指标223.8%,重金属含量符合行业标准限量要求。The amino acid fertilizer was prepared with chrome shavings. First, collagen proteins were extracted from chrome shavings by alkaline hydrolysis. Then collagen proteins were hydrolyzed to small peptides and amino acids by sulfate which were easy to be absorbed by the plant. The optimum conditions of acidolysis are as follows： liquid ratio is 1： 1, hydrolysis temperature is 120℃ , hydrolysis time is 12h, amount of sulfuric acid and protein powder is 1 ： 1. Free amino acid content in fertilizer is 32. 4% , which is 223.8% higher than industrial technical index. The heavy metal content of amino acid fertilizer meets the limi- tation requirement.

关 键 词：革屑 胶原蛋白 水解 氨基酸 肥料 

分 类 号：TS59[轻工技术与工程—皮革化学与工程]