Marine shellfish amino acid chelated fertilizer and preparation method thereof

A technology of amino acid and shellfish, applied in the direction of nitrate fertilizer, ammonium orthophosphate fertilizer, alkaline orthophosphate fertilizer, etc., can solve the problem that leftovers cannot be directly fermented and applied to feed, so as to prolong the fertilizer effect and storage time, calcium salt Low content, the effect of preventing pollution damage

Active Publication Date: 2022-03-18
威海长青海洋科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Shellfish heavy metals are enriched in viscera, so that the leftovers cannot be directly fermented and used for feed

Method used

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  • Marine shellfish amino acid chelated fertilizer and preparation method thereof
  • Marine shellfish amino acid chelated fertilizer and preparation method thereof
  • Marine shellfish amino acid chelated fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 A kind of preparation method of marine shellfish amino acid chelate fertilizer, concrete steps are as follows:

[0027] (1) Add 800 parts of clear water to 800 parts of shellfish scraps, and make a slurry.

[0028] (2) Add 10 parts of protease and 10 parts of lipase to the slurry in step (1), stir and enzymolyze at 40°C for 6 hours to obtain the first enzymolysis solution.

[0029] (3) Raise the temperature of the first enzymolysis solution to 80°C for 10 minutes, then lower the temperature to 60°C, and stir for 1 hour to fully react the heavy metal ions with free protein carboxyl groups. Then cool to room temperature, centrifuge at 3000rpm / min for 10min, and the supernatant is the second enzymolysis solution.

[0030] (4) Add 30 parts of boric acid, 120 parts of calcium nitrate tetrahydrate, 60 parts of magnesium nitrate hexahydrate, and 30 parts of potassium dihydrogen phosphate to the second enzymolysis solution for chelation. The temperature is 60 ° C ...

Embodiment 2

[0032] Embodiment 2 A kind of preparation method of marine shellfish amino acid chelate fertilizer, concrete steps are as follows:

[0033] (1) Add 1000 parts of clear water to 1000 parts of shellfish scraps, and make a slurry.

[0034] (2) Add 15 parts of protease and 15 parts of lipase to the slurry in step (1), stir and enzymolyze at 45°C for 7 hours to obtain the first enzymolysis solution.

[0035] (3) Raise the temperature of the first enzymolysis solution to 85°C for 15 minutes, then lower the temperature to 65°C, and stir for 1.5 hours to fully react the heavy metal ions with free protein carboxyl groups. Then cool to room temperature, centrifuge at 4000rpm / min for 15min, and the supernatant is the second enzymolysis solution.

[0036] (4) Add 40 parts of boric acid, 180 parts of calcium nitrate tetrahydrate, 9 parts of magnesium nitrate hexahydrate, and 40 parts of potassium dihydrogen phosphate to the second enzymolysis solution for chelation. The temperature is 65 ...

Embodiment 3

[0038] Embodiment 3 A kind of preparation method of marine shellfish amino acid chelate fertilizer, concrete steps are as follows;

[0039] (1) Add 1200 parts of clear water to 1200 parts of shellfish scraps, and make a slurry.

[0040] (2) Add 20 parts of protease and 20 parts of lipase to the slurry in step (1), stir and enzymolyze at 50°C for 8 hours to obtain the first enzymolysis solution.

[0041] (3) Raise the temperature of the first enzymolysis solution to 90°C for 20 minutes, then lower the temperature to 70°C, and stir for 2 hours to fully react the heavy metal ions with free protein carboxyl groups. Then cool to room temperature, centrifuge at 5000rpm / min for 20min, and the supernatant is the second enzymolysis solution.

[0042] (4) Add 50 parts of boric acid, 250 parts of calcium nitrate tetrahydrate, 120 parts of magnesium nitrate hexahydrate, and 50 parts of potassium dihydrogen phosphate to the second enzymolysis solution for chelation. The temperature is 70°...

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Abstract

The invention provides a marine shellfish amino acid chelated fertilizer and a preparation method thereof, the marine shellfish amino acid chelated fertilizer is prepared by using shellfish production leftovers, performing enzymolysis on the shellfish production leftovers into micromolecular amino acid substances through a method of adding water and grinding into slurry, performing enzymolysis and chelating, and then forming insoluble salt by using free carboxyl of protein and combining with heavy metal ions, so as to obtain the marine shellfish amino acid chelated fertilizer. And heavy metal ions are removed through a centrifugation or ultrafiltration method. Adding boric acid, calcium nitrate, magnesium nitrate, potassium phosphate and the like for chelating; shellfish protein is chelated to generate a stable complex, so that the fertilizer efficiency is prolonged, the preservation time is prolonged, and the production utilization rate is increased. Protein and amino acid chelated metal ions in the enzymatic hydrolysate are utilized to the maximum extent, meanwhile, heavy metal in leftovers is removed, the fertilizer efficiency is effectively improved, and pollution and damage of soil are prevented. The method can be widely applied to the technical field of chelate fertilizer preparation.

Description

technical field [0001] The application belongs to the technical field of chelated fertilizer production, more specifically, relates to a kind of marine shellfish amino acid chelated fertilizer and a preparation method thereof. Background technique [0002] Due to seawater pollution in recent years, a large amount of heavy metals are often accumulated in the intestines and viscera of shellfish. The efficient utilization of shellfish production waste is a common problem in the aquatic industry. Shellfish heavy metals are enriched in viscera, which makes the leftovers of shellfish unable to be directly fermented and used for feed. [0003] The protein is prepared into a liquid enzymatic hydrolysis solution by protease, and heavy metals are removed from the enzymatic hydrolysis solution. Using enzymatic hydrolysis technology to enzymatically hydrolyze marine shellfish proteins into small molecule soluble components such as amino acids and polypeptides, which can effectively imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/40
CPCC05B7/00C05G3/00C05C5/00C05C5/04C05C11/00C05D3/02C05D9/02C05F1/005
Inventor 陈晓丽常丽荣王晓辉钱浩姚艳艳李新宁
Owner 威海长青海洋科技股份有限公司
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