Chitohexaose chromium complex and preparation method of chitohexaose chromium complex

The invention provides a chitohexaose chromium complex and a preparation method of the chitohexaose chromium complex. Chitohexaose chromium is a complex of six-membered-ring chitosan oligosaccharide and chromium trichloride, has average molecular weight of 1000-1500, has deacetylation degree more than 90%, and is the chitohexaose chromium complex formed by coordination of chitosan oligosaccharide and Cr . According to the invention, the chitohexaose chromium complex is prepared, and the optimum reaction conditions for preparing the chitohexaose chromium complex are determined. Chromium utilization rate can be improved by using the chitohexaose chromium complex, and the chitohexaose chromium complex is expected to have important application value in food and feed additive fields; the equipment is simple, the operational conditions are easy to control, and the production cost is low; and the obtained chitohexaose chromium complex is high in conversion rate.