Preparation method of corn dietary fiber micro powder

Abstract

The invention discloses a preparation method of corn dietary fiber micro powder, belonging to the technical field of agricultural product deep processing. The invention takes the low-price by-product-corn bran residues from deep processed corns as the material to extract important functional health care food-corn dietary fiber micro powder. The preparation method includes the steps of: 1, pretreatment: purifying, grinding, sieving and drying the corn bran residues; 2, alkaline leaching: adding sodium hydroxide solution according to proportion, stirring to be even, centrifugally washing to be neutral, and removing the protein; 3, pickling: transferring the precipitate to dilute sulfuric acid solution, stirring to be even, centrifugally washing to be even so as to remove the macromolecular sugar such as starch and the like; 4, primary drying and grinding: primarily drying and then grinding through a grinder until the grain size is below 100mesh; and 5, drying: drying through a dryer with the water content controlled below 2%. In this way, the corn dietary fiber micro powder product can be obtained. The preparation method is simple in production process, low in cost and easy to realize in industrialized production, truly refines and improves the corn deep processing industry and greatly improves the comprehensive application value of corns, and the corn dietary fiber micro powder product has good performance. Therefore, the preparation method has remarkable economic and social benefits.

Description

technical field

[0001] The invention belongs to the technical field of deep processing of agricultural products, in particular to a preparation method of corn dietary fiber micropowder. Background technique

[0002] Corn dietary fiber is the seventh nutrient after sugar, protein, fat, vitamins, minerals and water. It plays an important role in preventing certain diseases of the human body. It can promote gastrointestinal motility and help the absorption of food And the discharge of feces, reduce the damage of bacteria to the stomach, and prevent the occurrence of colitis and colon cancer. At the same time, it also has the effect of lowering blood lipids, preventing cardiovascular and cerebrovascular diseases, and preventing and treating diabetes. The World Health Organization stipulates that the daily intake of corn dietary fiber per person should be 16-24g, and the American Diabetes Association recommends that diabetic patients should consume 40 grams of corn dietary fiber ...