Production method of special plant feed additive for aquaculture

[0018] Example 1

[0019] Pick 1,000kg of fresh eucommia leaves in mid-July and dry them at 60~65℃ on the same day to obtain 335kg of roasted eucommia leaves; crush the roasted leaves of eucommia ulmoides to 10-20 mesh and extract with deionized water as solvent , The material-to-liquid ratio is 1:10, stirring and leaching for 6 hours, the leaching liquid is pumped into the storage tank; adding 1:8 deionized water for secondary leaching, combining the leaching liquid, using 5um hollow fiber membrane for fine filtration, fine filtrate After vacuum concentration to a Baume degree of 38°Bé, 202kg of Eucommia ulmoides leaf extract concentrate was obtained as the microencapsulated core material.

[0020] Take 33.5 kg of ethyl cellulose, add 66.5 kg of deionized water, heat to 80°C for uniform emulsification, add 100 kg of Eucommia leaf extract concentrate while hot, mix and stir to form a suspension, the suspension Baume degree 22°Bé, The high-pressure homogenizer is pumped into the spray

[0021] Example 2

[0022] Take 34kg of carnauba wax, add 66kg of deionized water, and heat to 90°C to emulsify evenly. Take 100kg of Eucommia ulmoides leaf extract concentrate, add it to the emulsion while it is hot, mix and stir to form a suspension, the suspension shall have a Baume degree of 25°Bé, and be pumped into the spray drying tower for airflow atomization at a high temperature of 170-180°C After instant drying, 74.2 kg of microencapsulated eucommia leaf extract was obtained. After testing, the effective ingredient content of Eucommia ulmoides leaf extract microcapsules prepared by this method: Eucommia ulmoides chlorogenic acid 2.56%, Eucommia ulmoides total flavonoids 13.46%, and Eucommia ulmoides total sugars 13.24%.