2007•China Pulp & Paper IndustryRequires access
A study on the modification of corn starch with enzyme
Xue Yu-ke
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Abstract
The corn starch was modified by α-amylase and the relationship between starch viscosity and influencing factors such as temperature, pH value, substrate consistency, reaction time and dosage of α-amylase were explored. The results show that the optimum condition was pH value 6.2, temperature 60℃, consistency of corn starch of 20%, consistency of Ca2+of 60 mg/l, reaction time of 10～15min and the dosage of α- amylase of 0.05%～0.06%(based on dry starch). The obtained products under the optimum conditions was used in surface sizing and the results show that the surface strength of paper was improved remarkably.