How to properly extract protein and protein feed from rice bran

[Preparation of raw materials] The cake was crushed through an 8-mesh sieve and used. Purchase seed, cellulolytic enzyme, yeast, amylase saccharification enzyme, sulfuric acid, alcohol, sodium hydroxide, ammonium hydrogen phosphate, urea for use. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

[Product properties and uses] Rice bran protein products are yellowish brown with a protein content of 94% to 99%; yeast protein feed products are rich in crude protein; both products have good amino acid composition, easy to digest, and good color and taste. Rice bran protein is available for human consumption or as a raw material for food. Yeast protein feed can be used to raise poultry, livestock and fish. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

[Production equipment and instruments] Pressure cooker, fermenter, 8 mesh sieve, centrifuge, mixer, dryer, thermometer. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

[Process flow] standby material → extraction → washing → separation → drying → rice bran protein. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

Rice husk → sulfuric acid → hydrolysis → neutralization → fermentation → drying → yeast feed finished product. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

[Operation Steps] p4h China Feed Industry Information Network - Based on Feed, Serving Livestock

Rice bran protein production Add appropriate amount of water and a 5% 0.05% sodium hydroxide solution to the standby material, stir at 37 ° C for 2 h, and discard the residue with a centrifuge. The extract was kept below 60 ° C, and the pH was adjusted to 4.5 to 5.0 with sulfuric acid. At this pH, the solubility of the protein was the smallest, and it was coagulated and precipitated from the solution. The precipitated rice bran protein was washed with 85% alcohol, stirred at room temperature for 1 hour, and then the impurities were separated by a centrifuge, and the residue was dried to obtain rice bran protein. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

The protein feed production is 100 kg of rice husk raw material powder, 5 kg of urea, 2 to 5 kg of sulfuric acid, 50 kg of water, 2 kg of yeast, and 250 g of amylase saccharifying enzyme. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

Slowly pour sulfuric acid into 50kg of water, then add 100kg of rice husk, stir it evenly in the pot, hydrolyze for 60-90min under steam pressure 1.4MPa, and obtain a sugar aqueous solution containing 1.7%~2% of reducing sugar. The mixture is placed in a fermenter with lime water, and the material is placed in a fermenter for 10 hours to obtain a mature yeast mash for drying, which is a yeast feed product. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

Or take raw rice hull powder 100kg, rice bran 20kg, ammonium hydrogen phosphate 3kg, water 40kg, seed koji 50g, cellulolytic enzyme 100g, mix well, fermentation at 30 °C for 48h, you can get 145kg fermented high protein feed. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

[Notes] p4h China Feed Industry Information Network - based on feed, serving animal husbandry

Processing of rice bran protein must be approved by the relevant state authorities to handle the relevant procedures. The processing owner must have a hygiene permit, and the practitioner must conduct regular health checks. The quality of the product must meet the food standard. The pharmaceutical reagents used should be of chemical grade. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

Sulfuric acid, hydrochloric acid and sodium hydroxide are strong acids and alkalis. Wear protective clothing, gloves and masks to prevent acid and alkali burns. Alcohol is a volatile, flammable chemical that bans open flames on the spot. The disposal and discharge of waste liquid must comply with relevant national regulations to prevent environmental pollution. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

When sulfuric acid is diluted, only sulfuric acid can be slowly added to the water. Never add water to the sulfuric acid. Once water is added to the sulfuric acid, the sulfuric acid immediately "boiling" and splashing around, easily causing sulfuric acid burns. P4h China Feed Industry Information Network - based on feed, serving animal husbandry

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