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Salt-containing oyster powder decontamination antibacterial material and preparation method and use method

A technology of antibacterial materials and oyster powder, which is applied in chemical instruments and methods, food science, inorganic non-surface-active cleaning compositions, etc., can solve the problems of insufficient porosity, low activity of shell powder, and rising production costs, and achieve production Low cost, excellent chemical activity, and low cost of use

Active Publication Date: 2016-01-27
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, on the one hand, the above-mentioned technical solution has high calcination temperature, high energy consumption, low activity of shell powder after calcination, and insufficient porosity; on the other hand, it needs to add 7-9% of the total weight of the material. Chitin, which accounts for 4-6% of the total weight of the material, has caused a further increase in its production cost, and the soaked and bleached vegetables and fruits need to be rinsed with a lot of water before they can be eaten safely. Require

Method used

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  • Salt-containing oyster powder decontamination antibacterial material and preparation method and use method

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Comparison scheme
Effect test

Embodiment 1

[0042] The salt-containing oyster powder decontamination and antibacterial material is prepared as follows:

[0043] In the first step, the oyster shells that have been piled up for natural fermentation and purification are firstly cleaned with clean water, then dried in the sun or in the shade under natural ventilation conditions, and then crushed to particles with a particle size of 0.5-3.5mm to make raw meal;

[0044] In the second step, the above-mentioned raw material is put into a high-temperature furnace, and the clinker is obtained by a three-stage stepped heating calcination method; the specific calcination steps are as follows:

[0045] First, heat up to 300°C at a heating rate of 2°C / min, and then keep it warm for 10 minutes;

[0046] Then, continue to heat up to 650°C at a heating rate of 5°C / min, keep warm for 20 minutes, and then ventilate and cool down to 600°C;

[0047] Then raise the temperature to 810°C at a heating rate of 10°C / min, and keep it warm for 40 mi...

Embodiment 2

[0051] The salt-containing oyster powder decontamination and antibacterial material is prepared as follows:

[0052] In the first step, the oyster shells that have been piled up for natural fermentation and purification are firstly cleaned with clean water, then dried in the sun or in the shade under natural ventilation conditions, and then crushed to particles with a particle size of 0.5-3.5mm to make raw meal;

[0053] In the second step, the above-mentioned raw material is put into a high-temperature furnace, and the clinker is obtained by a three-stage stepped heating calcination method; the specific calcination steps are as follows:

[0054] First raise the temperature to 350°C at a heating rate of 2°C / min, and then keep it warm for 10 minutes;

[0055] Then, continue to heat up to 650°C at a heating rate of 5°C / min, keep warm for 20 minutes, and then ventilate and cool down to 600°C;

[0056] Then raise the temperature to 820°C at a heating rate of 10°C / min, and keep it...

Embodiment 3

[0060] The salt-containing oyster powder decontamination and antibacterial material is prepared as follows:

[0061] In the first step, the oyster shells that have been piled up for natural fermentation and purification are firstly cleaned with clean water, then dried in the sun or in the shade under natural ventilation conditions, and then crushed to particles with a particle size of 0.5-3.5mm to make raw meal;

[0062] In the second step, the above-mentioned raw material is put into a high-temperature furnace, and the clinker is obtained by a three-stage stepped heating calcination method; the specific calcination steps are as follows:

[0063] First raise the temperature to 330°C at a heating rate of 2°C / min, then keep it warm for 10 minutes;

[0064] Then, continue to heat up to 650°C at a heating rate of 5°C / min, keep warm for 18 minutes, and then ventilate and cool down to 600°C;

[0065] Then raise the temperature to 820°C at a heating rate of 10°C / min, and keep it war...

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Abstract

The present invention discloses a salt-containing oyster powder decontamination antibacterial material and a preparation method and a use method, the salt-containing oyster powder decontamination antibacterial material is a mixture of oyster shell powder with teh particle diameter of 50mum or less, food grade sodium bicarbonate powder and sodium chloride powder in a weight ratio of 1:0.45-0.55:0.45-0.55; wherein the oyster shell powder has a porous structure, and is high activity powder obtained by calcinations and grinding of oyster shell as a raw material. According to the preparation method, clinker is prepared by three-level stepped heating calcining method to obtain the porous structure and high chemical activity; and the use method of the salt-containing oyster powder decontamination antibacterial material used for removing agricultural pesticide residues is simple, safe and efficient, and free of secondary pollution. Compared with the prior art, the salt-containing oyster powder decontamination antibacterial material has low cost, energy saving, safe and efficient use, green environmental protection and other characteristics, is suitable for all kinds of fruit and vegetable washing treatment, can effectively eliminate residual agricultural chemicals deposited on the surface, and can kill escherichia coli.

Description

technical field [0001] The invention relates to an antibacterial material, a preparation method and a use method thereof, in particular to a salt-containing oyster powder decontamination antibacterial material, a preparation method thereof and a use method for removing pesticide residues in agricultural products, belonging to the technical field of oyster shell modification. Background technique [0002] There are many types of marine shellfish in my country, and the output in 2014 reached 14 million tons. Among them, oyster production is the largest, with an annual output of 4.1 million tons. The shell weight of oysters accounts for more than 75% of the total weight of oysters. That is to say, my country will produce about more than 3 million tons of oyster shells every year. [0003] If oyster shell solid waste is discarded into the natural environment, it will not only have a negative impact on the aesthetics of the environment, but also occupy a large amount of availab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D7/60C11D7/20C11D7/12C11D7/10A23L5/20
Inventor 李子超李群郭培志彭洪亮马苗贺成苍陆香珍乔银楠许春芳
Owner QINGDAO UNIV
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