Method for cleaning comprehensive utilization of shrimp and crab shell waste

A technology for waste and shrimp and crab shells, which is applied in the field of clean and comprehensive utilization of shrimp and crab shell waste, can solve the problems that soluble protein or amino acid solution cannot be formed, and solid protein is difficult to be absorbed and utilized by plants, so as to reduce waste discharge, Effect of reducing processing difficulty and improving separation efficiency

Inactive Publication Date: 2019-01-04
ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

2. After neutralizing the protein-rich alkaline waste liquid in the traditional production process, the protein will precipitate in large quantities when it reaches th

Method used

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  • Method for cleaning comprehensive utilization of shrimp and crab shell waste
  • Method for cleaning comprehensive utilization of shrimp and crab shell waste
  • Method for cleaning comprehensive utilization of shrimp and crab shell waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1. The method of cleaning and comprehensive utilization of shrimp and crab shell waste

[0044] 1. Steam explosion

[0045] After soaking 1kg of shrimp shell or crab shell in water for 3 hours, put it into the steam explosion equipment for blasting treatment. The set processing pressure is 1.4MPa-2.4MPa, and the processing time is 60s-600s. After the treatment is completed, dry at 50-80°C using a blast drying oven.

[0046] XRD (X-ray Diffraction) analysis was carried out on the shrimp shells treated by steam explosion, and the shrimp shells not treated by steam explosion were used as a control. It was found that the crystallinity of shrimp shells after steam explosion treatment was significantly reduced, and the crystallinity continued to decrease with the increase of pressure. The results show that the steam explosion technique can damage the crystal structure inside the shrimp shell to a certain extent, thereby reducing the binding degree of the three c...

Embodiment 2

[0091] Embodiment 2. Plant fertilizer promotes the growth of wheat

[0092]The liquid plant fertilizer prepared in Example 1 was diluted 300, 400, 500, and 600 times respectively, and distilled water was used as a control (ck) to study the effect of the above-mentioned plant fertilizer on wheat seed germination and growth. The wheat seeds used are Jingdong 22, a known variety, from Beijing Xiaotangshan National Precision Agriculture Demonstration Base.

[0093] The specific steps are:

[0094] Soak the wheat seeds with 0.3% potassium permanganate solution for 5 minutes, rinse them with distilled water until they are colorless, divide them into 5 groups, and each group has 100 wheat seeds. The 5 groups of wheat seeds were soaked in the above-mentioned solutions with different concentrations for 12 hours to allow the seeds to fully imbibition. Afterwards, the seeds were respectively planted in sterilized soil and cultured in an artificial climate box under the following condit...

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Abstract

The invention relates to chitin extraction, in particular to a method for cleaning comprehensive utilization of shrimp and crab shell waste. The method includes the steps of steam explosion, wherein shrimp shells and / or crab shells are soaked in water, placed in steam explosion equipment, treated at 1.4MPa-2.4MPa for 60-600s, dried and crushed; decalcification, wherein shrimp shell and / or crabshell powder is treated with a decalcifying agent at 20-80 DEG C for 60-300min, filtering is conducted, a filtrate A is obtained, a solid material is washed with water, and drying is conducted; deproteinization, wherein the shrimp shell and / or crab shell powder is treated with a lye at 60-100 DEG C for 90-300min, filtering is conducted to obtain a filtrate B, the solid material is washed with water, and drying is conducted; the shrimp shells and / or the crab shells are treated according to the sequence of the steam explosion, the decalcification and the deproteinization or the steam explosion, the deproteinization and the decalcification to obtain the chitin. The method improves the separation efficiency of the chitin and reduces the amount of acid and alkali and waste discharge.

Description

technical field [0001] The invention relates to the extraction of chitin, in particular to a method for clean and comprehensive utilization of shrimp and crab shell waste. Background technique [0002] Shrimp and crab are important products produced by fisheries in the world. In recent years, the total output of shrimp and crab has reached more than 10 million tons every year. However, in the process of production and consumption, a large amount of solid waste including heads, shells and tails will be generated after peeling off the edible parts, and these wastes account for about 75% of the total weight of crustaceans. According to statistics, the world produces about 6-8 million tons of shrimp and crab shells every year, but most of the waste of shrimp and crab shells has not been effectively processed and utilized, resulting in environmental pollution and waste of resources. The main components of shrimp and crab shells are 20-40% protein, 20-50% calcium carbonate and 15...

Claims

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Application Information

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IPC IPC(8): C08B37/08C05F1/00
CPCC05F1/005C08B37/0003C08B37/003Y02A40/20
Inventor 田志清王士奎胡雪芳张志民梁亮裴海生
Owner ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
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