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Ethylene absorbent and preparation method thereof

A technology of ethylene absorbent and metal additives, which is applied in the direction of botanical equipment and methods, separation methods, chemical instruments and methods, etc., can solve the problems of operator injury, easy to corrode skin, etc., and achieve high ethylene absorption efficiency and good absorption Effect, effect of large ethylene absorption capacity

Inactive Publication Date: 2009-11-18
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Potassium permanganate is more effective as a method of removing and absorbing ethylene, and there are also products on sale at present, but due to the strong oxidation type of potassium permanganate, it is very easy to corrode the skin and cause harm to the operator, so it is required to do it when using it. good precautions

Method used

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  • Ethylene absorbent and preparation method thereof
  • Ethylene absorbent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0018] An ethylene absorbent, the ethylene absorbent is prepared from a carrier substance, a metal auxiliary agent and a main reaction agent, the carrier substance is diatomite, the metal auxiliary agent is manganese chloride, and the weight of the metal auxiliary agent manganese chloride is the carrier 1% of the weight of the substance, the main reaction agent is palladium nitrate, and the weight of the main reaction agent palladium nitrate is 0.3% of the weight of the carrier substance.

[0019] The preparation method of above-mentioned ethylene absorbent, step is as follows:

[0020] (1) Weigh 20.0 g of carrier material diatomite, add 100 ml of 1mol / l nitric acid solution to acidify diatomite with nitric acid solution, stir at room temperature, acidify time is 0.5 hour, then filter or centrifuge, filter or centrifuge The final residue was dried at 60°C until the water content was 10%, to obtain an acidified diatomite carrier;

[0021] (2) Take metal additive manganese chlo...

Embodiment 2

[0025] An ethylene absorbent, the ethylene absorbent is prepared from a carrier substance, a metal auxiliary agent and a main reaction agent, the carrier substance is activated carbon, the metal auxiliary agent is anhydrous copper sulfate, and the weight of the metal auxiliary agent anhydrous copper sulfate is the carrier 3% of the weight of the substance, the main reaction agent is palladium chloride, and the weight of the main reaction agent palladium chloride is 1% of the weight of the carrier substance.

[0026] The preparation method of above-mentioned ethylene absorbent, step is as follows:

[0027] (1) Take by weighing 20.0 g of carrier material activated carbon powder, add 100 ml of 1mol / l nitric acid solution and acidify the activated carbon with nitric acid solution, stir at room temperature, and the acidification time is 5.0 hours, then filter or centrifuge, filter or centrifuge the residue in Dry at 60°C until the moisture content is 30%, to obtain acidified activa...

Embodiment 3

[0032] An ethylene absorbent, the ethylene absorbent is prepared from a carrier substance, a metal auxiliary agent and a reaction main agent, the carrier substance is artificial zeolite, the metal auxiliary agent is ammonium molybdate, and the weight of the metal auxiliary agent ammonium molybdate is the carrier substance 5% of the weight, the main reaction agent is palladium acetate, and the weight of the main reaction agent palladium acetate is 5% of the weight of the carrier substance.

[0033] The preparation method of above-mentioned ethylene absorbent, step is as follows:

[0034] (1) Weigh 20.0 g of the carrier material artificial zeolite, add 100 ml of 1mol / l nitric acid solution to acidify the artificial zeolite with nitric acid solution, stir at room temperature, and the acidification time is 10.0 hours, then filter or centrifuge, and filter or centrifuge the residue Drying at 60°C until the water content is 50% to obtain an acidified artificial zeolite carrier;

[...

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Abstract

The invention discloses an ethylene absorbent and a preparation method thereof, belonging to the technical field of fruit, vegetable and flower fresh-keeping. The ethylene absorbent is prepared by a carrier substance, a metal promoter and a main reactant; the carrier substance is active carbon, diatomite or zeolite; the metal promoter is cupric compound, manganous compound or molybdous compound; the weight of the metal promotor is 1-5% of that of the carrier substance; the main reactant is the divalent compound of palladium; the weight of the main reactant is 0.3-5% of that of the carrier substance. The preparation method comprises the following steps: adding the acidified, filtered and dried carrier substance into the aqueous solution of the metal promotor to obtain the mixture of the acidified carrier substance and the metal promotor, adding the aqueous solution prepared by the main reactant into the above mixture, filtering and drying the mixture of aqueous solution and the above mixture to obtain the granular ethylene absorbent. The invention is widely applied to fresh-keeping of various respiration climacteric fruit, vegetables and flowers, and the ethylene absorbent of the invention is green, safe, pollution-free and easy to regenerate; in addition, the palladium compound in the ethylene absorbent can be recycled.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping of fruits, vegetables and flowers, and in particular relates to an ethylene absorbent and a preparation method thereof. Background technique [0002] Ethylene is a normal metabolite of plant cells, and as an endogenous plant hormone, it plays a multi-faceted regulatory role in plant physiological processes. However, in the postharvest storage of fruits and vegetables, ethylene can produce some adverse effects, including promoting aging, promoting ripening and softening, exacerbating quality loss, making fruits susceptible to pathogen infection, and causing physiological disorders and other aspects. In the postharvest storage of fruits and vegetables, in addition to the endogenous ethylene produced by the fruits and vegetables themselves, there are also exogenous ethylene from the food chain, packaging, storage, transportation and cold storage, such as mechanical loss, pollution and metabolis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N3/02A23B7/14B01D53/81B01D53/72
Inventor 曲桂芹李小红曹建康朱毅罗云波
Owner CHINA AGRI UNIV
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