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发明公开
CN101843259A 利用玉米蛋白粉制备天然除草剂的工艺 无效 - 撤回

利用玉米蛋白粉制备天然除草剂的工艺
摘要：
本发明涉及一种利用玉米蛋白粉制备天然除草剂的工艺，实施步骤如下：（1）将玉米蛋白粉和水混合，调整浆液pH6.0-8.0；（2）向浆液中加入淀粉酶；0.1-1.0%干基，利用喷射液化器进行液化，温度137℃-171℃；加热后的料液冷却至60℃，调整pH值在4.0-5.0；（3）添加糖化酶，0.01-0.1%干基，料液在60℃保温8-16小时，制成含5-20%固形物的浆液；（4）添加纤维素酶，0.1%-1.0%干基，料液在50-60℃保温2-6小时，制成含5-20%固形物的浆液；（5）添加蛋白酶0.1%-1%干基，料液在50-60℃保温2-6小时；料液调整pH值为6.0-6.8，利用磷酸钙絮凝，取上清；（6）将上清液进行干燥制成玉米蛋白粉水解物；蛋白含量为85-95%，并且水溶性氮含量在10%-15%；（7）玉米蛋白水解物在土壤中的用量为0.05-10g/dm2。本发明制备工艺简单，实用效果非常显著。
摘要（英）：

The invention relates to a process for preparing natural herbicide by using corn protein powder, comprising the following implementation steps: (1) mixing the corn protein powder and water, and then regulating the pH of slurry into 6.0-8.0; (2) adding amylase and 0.1-1.0 % of a dry base to the slurry, liquefying by a jet liquefier at the temperature of 137 DEG C-171 DEG C, cooling the heated feed liquid to the temperature of 60 DEG C, and regulating pH into 4.0 to 5.0; (3) adding glucoamylase and 0.01-0.1% of the dry base, and insulating the feed liquid at 60 DEG C for 8-16 hours to obtain the slurry containing 5-20% of a solid; (4) adding cellulase and 0.1%-1.0% of the dry base, and insulating the feed liquid at 50-60 DEG C for 2-6 hours to obtain the slurry containing 5-20% of the solid; (5) adding protease and 0.1%-1% of the dry base, insulating the feed liquid at 50-60 DEG C for 2-6 hours, regulating the pH of the feed liquid into 6.0-6.8, using calcium phosphate for flocculation and then taking supernate; (6) drying the supernate to prepare into a corn protein powder hydrolysate having 85-95% of protein and 10%-15% of water-soluble nitrogen; and (7) the amount of the corn protein hydrolysate is 0.05-10g/dm<2> in soil. The process has the advantages of simple preparation process and obvious practical effect.

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