Preparation method of rice peptide chelated calcium

The invention provides a preparation method of rice peptide chelated calcium. The method comprises the following steps: performing enzymolysis on rice protein powder serving as a raw material to obtain rice peptide, and performing chelation reaction on the rice peptide and a calcium source to prepare the rice peptide chelated calcium, so the variety of calcium supplement products is enriched, and the raw material source of the calcium supplement products is expanded. The rice peptide chelated calcium can also be used as a food raw material to be compounded with other products to prepare products such as tablet candies, effervescent tablets, bulletproof coffee and the like. Low-temperature operation is adopted as far as possible in the extraction process of the rice peptide chelated calcium, the biological activity of the product is reserved to the maximum extent, and the product quality is improved. And the rice protein powder is deeply processed, so that high-value utilization is realized. 本发明提供一种大米肽螯合钙的制备方法