Study On The Hydrolyzation Of Corn Gluten Meal

The total yield of the com in our country occupies the second of the world, accounting for 20% of total yield in world, accounting for 25% of total food yield in our country . But mainly process of the com is used to axtract the starch, the rest is wasted. There is abundant protein in these outcomes, and it is a kind of uselly resource. Thing through the enzymatic hydrolysis from com gluten meal get not only have the good deliquescence, liquidity, hot stability, but have low viscosity, high density, absorbing in the body quickly and high utilization .When it becomes the smaller molecular weight peptide ,it can also release some excellent properties such as anti-oxidation, the removing the fatigue, the lower blood ammonia density, declining the blood pressure and promoting the elcohol metabolization. So the development successfully of the corn peptides will influence the industry of the corn and provide a good healthily food source for people.Generally the whole processes of hydrolyzing protein include desalting and debittering. In this paper the feasibility of make collagen oligopeptides from hydrolysis of corn gluten meal by special heat treatment and acidic protease has been studied. The product prepared with this method has high degree of hydrolyzing and more oligopeptides. Moreover this method has the effect of desalting.The optimal conditions are as follow: hydrolyzing temperature 60,concentrateion 80g/L,ratio of acidic protease/substrate 10%,total hydrolysis time 8hs.Under these conditions the degradation percentage of the corn gluten meal can reach 36.7%,while the hydrolysis degree can reach 19.85%.Hydrolysis time is 8hs, the average molecular weight of oligopeptide attain 1918.Hydrolysis time is 24hs, the average molecular weight of olgopeptide attain 1479.Through analyzing amino acids constitution by HPLC , it discover that these amino acids are necessary for people , and amino acids are growing with hydrolysis time. And Glu, Arg, Leu,cys, and cys2 increase quickly.Paper also shows active carbon have effect on decoloring of products.