First, the production of rice starch
The production process of rice starch mainly includes washing, soaking, pulping, filtering, precipitation, washing, drying and other steps.
1. Cleaning: soak the rice in water and rub it by hand to remove impurities on the surface.
2. Soaking: Soak the washed rice in water for 6-8 hours to make it fully absorb water.
3. Pulping: Put the soaked rice into a refiner, add a proper amount of water and grind it into fine pulp.
4. Filtering: pour the ground rice slurry into a filter and filter out the starch liquid.
5. Precipitation: the filtered starch solution is left to stand, so that starch particles are precipitated to the bottom.
6. Washing: Wash the precipitated starch granules with clear water for many times to remove impurities and residues.
7. Drying: put the washed starch granules into a dryer to dry until the moisture content meets the requirements.
Second, the nature of rice starch
Rice starch is a colorless, tasteless and odorless powdery substance with the following characteristics:
1. Good solubility: Rice starch has high solubility in water and can form a uniform colloidal solution.
2. Thermal expansion and cold contraction: rice starch expands when heated and contracts after cooling, which makes it play a good role in thickening, stabilizing and retaining water in food processing.
3. Good transparency: Rice starch can increase the transparency of food and make it more beautiful.
Third, the application of rice starch
Rice starch is widely used in food, medicine, chemical industry and other fields, with the following applications:
1. food industry: rice starch is a commonly used thickener, stabilizer and water-retaining agent, which can be used to make various cakes, biscuits, noodles, rice noodles and other foods.
2. Pharmaceutical industry: Rice starch can be used to make capsules, tablets and other pharmaceutical dosage forms, as well as medical dressings.
3. Chemical industry: Rice starch can be used to make adhesives and paper reinforcers.