Preparation method of crayfish feed with rice bran polysaccharide
A technology of rice bran polysaccharide and lobster, which is applied in the field of crayfish feed preparation with rice bran polysaccharide, can solve the problems affecting crayfish's digestion and absorption of feed, affecting crayfish intestinal structure, etc., achieve strong food attraction and palatability, and improve Anti-stress ability, effect of reducing hydrolysis time
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Embodiment 1
[0016] The crayfish feed preparation method that is added with rice bran polysaccharide comprises the following steps:
[0017] 1) After dehydrating and pulverizing the rice bran meal, pass it through a 20-mesh sieve, control the moisture content of the material to 20%, extrude and puff it under the conditions of extrusion temperature 115°C and screw speed 120r / min, dry the extrudate and crush it, pass through 40 Mesh sieve; add distilled water according to the material-liquid ratio of 1:3, add the compound enzyme of substrate weight 0.8%, the compound enzyme is the cellulase and the pectinase that the mass ratio is 1:1.5, at a temperature of 40°C and a pH of Enzymolysis under the condition of 4.0 for 40 minutes; adjust the temperature of the enzymolysis solution to 50°C, the ultrasonic frequency is 30kHz, and the ultrasonic density is 0.45W / cm 2 Ultrasonic treatment for 20 minutes under the condition of 1000r / min, centrifuge at 1000r / min to get the supernatant, after alcohol ...
Embodiment 2
[0019] The preparation method of crayfish feed added with rice bran polysaccharide includes: extraction of rice bran polysaccharide, hydrolysis of tilapia leftovers, double enzyme hydrolysis to prepare soybean meal short peptide, and compounding, specifically including the following steps:
[0020]1) Extraction of rice bran polysaccharide: dehydrate and pulverize the rice bran meal, pass through a 40-mesh sieve, control the moisture content of the material to 25%, extrude and expand at the extrusion temperature of 120°C and the screw speed of 140r / min, and dry the extrudate After pulverizing, cross 60 mesh sieves; Add distilled water as 1:5 according to material-liquid ratio, add the compound enzyme of substrate weight 1.0%, compound enzyme is the cellulase and pectinase that mass ratio is 1:2.0, at temperature Enzymolysis at 45°C and pH 4.5 for 45 minutes; adjust the temperature of the enzymolysis solution to 52°C, at an ultrasonic frequency of 40kHz and an ultrasonic density ...
Embodiment 3
[0025] The preparation method of crayfish feed added with rice bran polysaccharide includes: extraction of rice bran polysaccharide, hydrolysis of tilapia leftovers, double enzyme hydrolysis to prepare soybean meal short peptide, and compounding, specifically including the following steps:
[0026] Extraction of rice bran polysaccharide: Dehydrate and pulverize the rice bran meal and pass it through a 30-mesh sieve, control the moisture content of the material to 22%, extrude and expand at the extrusion temperature of 118°C and the screw speed of 130r / min, dry the extrudate and crush it , pass through a 50-mesh sieve; add distilled water according to the ratio of material to liquid at 1:4, add a compound enzyme with a weight of 0.9% of the substrate, the compound enzyme is cellulase and pectinase with a mass ratio of 1:1.8, and the temperature is 44°C , Enzymolysis for 40 minutes under the condition of pH 4.2; adjust the temperature of the enzymolysis solution to 50°C, at an ul...
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