Medium for producing glucosamine

Abstract

The invention relates to a medium for producing glucosamine, including 25-500 g/L molasses, 0.01-100 g/L soybean hydrolysate or 0.25-100 g/L corn steep liquor, 0.1-2 g/L MgSO 4 .7H 2 O, 0.1-0.5 g/L Al(NO 3 ) 3 , and 1-5 mL/L methanol.

What is claimed is: 
     
         1 . A medium for producing glucosamine, comprising
 25-500 g/L molasses;   a nitrogen source selected from the group consisting of 0.01-100 g/L soybean hydrolysate and 0.25-100 g/L corn steep liquor;   0.1-2 g/L MgSO 4 .7H 2 O;   0.1-0.5 g/L Al(NO 3 ) 3 ; and   1-5 mL/L methanol.   
     
     
         2 . The medium of  claim 1 , wherein the molasses is pretreated with the following steps:
 mixing a molasses stock with water at a ratio of 0.5:1 to 5:1 by volume;   allowing the mixed molasses stock and water to settle and form a upper layer and a lower layer; and   collecting the upper layer as treated molasses.