Method for preparing food grade corn starch by new corn soaking process

Abstract

The invention relates to a method for preparing food grade corn starch by a new corn soaking process. The method comprises the following steps: soaking corn in an aqueous organic acid solution havinga mass concentration of 0.01-5.0%, and processing the soaked corn to form the corn starch. The organic acid which replaces SO2 in the traditional process is used to soak the corn, and achieves the same soaking effect with the traditional soaking process, and the obtained product has no SO2 residue, and does not need SO2 treatment, so the process is saved, and the method is green and environmentally friendly. The soaked corn can be directly processed to form the edible corn starch. The corn starch prepared by the method can be used for food thickening, seasonings, baked foods, jellies and frozen foods as a thickener and a stabilizer, can be used for producing salad foods and starch milk as an emulsifier, can be applied to production of sugar for food sweeteners, can be used to produce instant rice noodles, can be used for brewing beer, and also can be used as an auxiliary material to assist drug therapy in the field of drugs.

Description

technical field [0001] The invention relates to the field of agricultural product processing, in particular to a method for preparing food-grade cornstarch by a new corn soaking process. Background technique [0002] China is the world's second largest corn producer and also the world's second largest consumer. Corn, which was once limited to food and feed as the main consumption, has undergone tremendous changes. In addition to the steady growth of feed consumption, the corn deep processing industry has grown rapidly in recent years. develop. Corn is the most suitable variety of industrial raw materials among the three major food crops, and it is also the most processed food crop. The corn processing industry is characterized by large processing space, long industrial chain, and extremely rich products, including eight series of starch, starch sugar, modified starch, alcohol, enzyme preparation, condiment, medicine, and chemical industry, but mainly starch and alcohol. Mo...

AI Technical Summary

Problems solved by technology

However, sulfurous acid is added in the process of wet extraction of corn starch, and the SO 2 Great environmental pollution, serious harm to people's health

Not only that, due to the SO in the products produced by it 2 The residue is high, which cannot meet the requirements of international food standards and cannot be eaten directly, so that the obtained product needs subsequent desulfurization treatment, resulting in cumbersome and complicated processes and increased production costs