Manufacturing process of wheat starch

Wheat starch is an important industrial raw material and is widely used in food, paper, textile and other industries. The following is a detailed introduction to the manufacturing process of wheat starch:
1. Raw material selection and cleaning
Raw material selection: Give priority to wheat varieties with moderate protein content and full grains. Durum wheat is usually a better choice because its relatively high starch content ensures a high flour extraction rate. For example, some high-quality winter wheat varieties in our country perform well in starch manufacturing.
Cleaning up impurities: Impurities in wheat are removed through screening, winnowing, magnetic separation and other processes. Screening uses screens of different apertures to separate large impurities (such as stones, straw) and small impurities (such as dust, broken grains) in wheat; winnowing uses wind to separate light impurities (such as shriveled grains, grass clippings) Blowing away; magnetic separation uses magnetic devices to adsorb and remove metal impurities mixed in wheat to ensure the purity of wheat entering subsequent processes.
2. Moisture adjustment (moistening wheat)
Purpose: to make the moisture distribution of wheat even, increase the toughness of the cortex, reduce the hardness of the endosperm, and facilitate subsequent grinding and separation of starch and gluten.
Operation: Put the cleaned wheat into the wheat moistening bin, add an appropriate amount of water according to the original moisture content and target moisture content of the wheat, and keep it for a certain time (usually 18-30 hours). During this period, the ambient temperature and humidity need to be controlled. Usually, the temperature for moistening wheat is 18-24℃.
3. Grinding
Primary grinding: Use a counter-roller mill to crush the moistened wheat to break the wheat particles and initially separate the bran and endosperm. Adjust the spacing and rotation speed between the pairs of rollers so that the wheat is moderately broken, keeping the bran intact as much as possible, and at the same time detaching the endosperm from the bran.
Fine grinding: The materials after initial grinding are further ground to grind the endosperm into finer particles for subsequent separation of starch and gluten. Multi-stage grinding process is often used to gradually refine the materials and improve the starch extraction rate.

Henan Huatai group supply wheat starch processing machine, wheat starch equipment, all starch processing equipment, any need please email to [email protected]