A kind of preparation method of rice protein with high solubility

Abstract

A method for preparing rice protein with high solubility belongs to the technical field of deep processing of plant protein resources. The invention uses broken rice as a raw material, and prepares rice protein with high solubility through processes such as compound enzyme multi-site directional modification, graft copolymerization with polysaccharide, spray drying and the like, which are separated by alkali extraction and acid precipitation. The rice protein nitrogen solubility index NSI prepared by the invention is more than or equal to 85%, and can be widely used as functional ingredients of protein drinks, baked products, minced meat products and nutritional health products.

Description

technical field

[0001] The invention discloses a method for preparing highly soluble rice protein, which belongs to the technical field of deep processing of plant protein resources. Background technique

[0002] Rice protein is a high-quality vegetable protein resource. Its essential amino acid content is close to the recommended model of FAO / WHO. Its biological value ranks first among cereal grains, and its digestibility is as high as 85%. At the same time, as a hypoallergenic protein resource, it is especially suitable as the base material of nutritional food for infants and special populations. However, there is no large-scale production of rice protein products in China at present. This is because the rice protein prepared by the traditional extraction method has always had problems such as low extraction rate, low purity, and poor solubility in the range of pH 4-10. The rice protein reported here is The nitrogen solubility index (NSI) of NSI is generally less than 50%...