Preparation and performance of edible screen-printing ink with chitosan

Abstract

Chitosan was used as a binder of edible screen-printing ink by analysis and exclusion methods in this paper. By the research of the dissolubility of chitosan, viscosity of solution, concentration and pH of acetic acid, amount of alcohol, and amount of pigment had been determined. Results showed that chitosan solution was used as binder of edible screen-printing ink was feasible. This edible screen-printing ink prepared with the method has excellent properties such as fineness, viscosity, initial dryness, tinting strength, and adhesion to substrate. So it can be used safely in food package printing industry. And it should decrease food pollution bringed by printing ink. The study on edible ink meets with the requirement of green printing.