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Preparation method and application of heavy metal removal agent in Procambarus clarkii

A technology of Crayfish and heavy metals, which is applied in the field of preparation of heavy metal removers, can solve problems such as unreported, and achieve the effects of ensuring quality and safety, low source cost, and reducing heavy metal pollution.

Active Publication Date: 2016-01-20
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the researches on heavy metals in Procambarus clarkii at home and abroad focus on their enrichment ability, organ distribution and toxic effects in vivo, and how to reduce or remove heavy metals in crawfish, besides reducing them from the source In addition to the heavy metal pollution in the breeding environment, there is no report on the low-cost removal agent for the cultured crawfish

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of a heavy metal removing agent in Procambarus clarkii, comprising the steps of:

[0032] (1) The alginate solution with a concentration of 8mg / ml was subjected to 240W, 20KHz ultrasonic treatment for 4.0min at 25°C to obtain a pretreatment solution.

[0033] (2) Raise the temperature of the pretreatment solution to 55°C, add high-concentration hydrogen peroxide with a mass concentration of 30%, the amount of high-concentration hydrogen peroxide is 4.5% of the volume of the pretreatment solution, keep warm for 1.5 hours, then heat up to 75°C, add mass Concentration of 3% low-concentration hydrogen peroxide, the dosage of low-concentration hydrogen peroxide is 1% of the volume of the pretreatment solution, heat preservation and degradation for 40min.

[0034] (3) Cool the pretreatment liquid processed in step (2) to room temperature, and after standing for 6 hours, add 2.5mol / L NaHCO 3 The pH of the solution was adjusted to 3.0. After filtration, 3 ...

Embodiment 2

[0038] A preparation method of a heavy metal removing agent in Procambarus clarkii, comprising the steps of:

[0039] (1) The alginate solution with a concentration of 16mg / ml was subjected to 300W, 40KHz ultrasonic treatment for 2.0min at 30°C to obtain a pretreatment solution.

[0040] (2) Raise the temperature of the pretreatment solution to 75°C, add high-concentration hydrogen peroxide with a mass concentration of 35%, the amount of high-concentration hydrogen peroxide is 7.5% of the volume of the pretreatment solution, heat-preserve and degrade for 1.0h, then raise the temperature to 85°C, add mass Low-concentration hydrogen peroxide with a concentration of 5%, the dosage of low-concentration hydrogen peroxide is 3% of the volume of the pretreatment solution, and it is degraded by heat preservation for 20 minutes.

[0041] (3) Cool the pretreatment liquid processed in step (2) to room temperature, and after standing for 10 hours, add 3.5mol / L NaHCO 3 The pH of the solut...

Embodiment 3

[0045] A preparation method of a heavy metal removing agent in Procambarus clarkii, comprising the steps of:

[0046] (1) The alginate solution with a concentration of 10mg / ml was subjected to 280W, 30KHz ultrasonic treatment for 3.0min at 28°C to obtain a pretreatment solution.

[0047] (2) Raise the temperature of the pretreatment solution to 60°C, add high-concentration hydrogen peroxide with a mass concentration of 30%, the amount of high-concentration hydrogen peroxide is 5% of the volume of the pretreatment solution, keep warm for 1.2 hours, then heat up to 80°C, add mass Concentration of 3% low-concentration hydrogen peroxide, the dosage of low-concentration hydrogen peroxide is 2% of the volume of the pretreatment solution, heat preservation and degradation for 30 minutes.

[0048] (3) Cool the pretreatment liquid processed in step (2) to room temperature, and after standing for 8 hours, add 3mol / L NaHCO 3 The pH of the solution was adjusted to 3.5, after filtration, ...

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PUM

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Abstract

The invention discloses a preparation method and application of a heavy metal removing agent in the body of Procambarus clarkii. The present invention uses algin as raw material, prepares algin oligosaccharide after degrading, and then coordinates and complexes with metal elements to prepare the algin oligosaccharide-metal element complex having the activity of removing heavy metals from the body of Procambarus clarkii. It is used in the crayfish culture process to achieve the effect of removing heavy metals such as Cd and Pb in the cultured crayfish. The raw material source cost of the present invention is low, safe and reliable, and the prepared heavy metal removing agent is safe and non-toxic and can effectively reduce the heavy metal pollution in the body of the Procambarus clarkii, which is of great significance for ensuring the quality and safety of the Procambarus clarkii and its products.

Description

technical field [0001] The invention relates to a preparation method of a heavy metal removal agent, in particular to a preparation method and application of a heavy metal removal agent in Procambarus clarkii. Background technique [0002] Procambarus clarkii, commonly known as freshwater crayfish, has high nutritional value and delicious taste. It is also rich in unsaturated fatty acids, protein and free amino acids. It is a good source of vitamin E, folic acid, potassium, zinc, selenium and other nutrients for the human body. At present, the aquaculture industry of Procambarus clarkii has been widely distributed in all parts of my country, and has formed a natural population available for use, especially in the middle and lower reaches of the Yangtze River, where the biological population is relatively large, and has become an important freshwater shrimp species in my country. Resources, which are also a leading product for the provinces in the middle and lower reaches of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K50/80A23K20/10A23K20/163A23K20/20A23K10/30A23K40/00
Inventor 张宾王晓玲高萌马璐凯王强
Owner ZHEJIANG OCEAN UNIV
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