Refrigerator deodorant and preparation method thereof

A deodorant and refrigerator technology, applied in deodorization, disinfection, etc., can solve the problems of limited deodorization effect, high safety requirements, loss of adsorption effect, etc., and achieve effective chemical deodorization, simple technical investment, and low cost Effect

Inactive Publication Date: 2010-11-10
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these adsorption-type deodorants can play a deodorizing effect in a short time, because they are easily saturated, the deodorizing effect is limited.
Although the chemical reaction type refrigerator deodorant has the advantage of eliminating odor molecules through reaction, it has high safety requirements and needs to adapt to the reaction conditions because it is used in the refrigerator for storing food, so the requirements are relatively high. Still rarely reported
[0004] my country has

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In a beaker, dissolve 2g carboxymethyl cellulose in 50ml deionized water, then add 7.2g NaOH, 18g acrylic acid, 0.5g potassium persulfate (initiator), and 3ml mass concentration of 1g / ml of N,N'-methylenebisacrylamide, cover the beaker with film, and react for 1.5h to obtain a light red viscous liquid. The product was vacuum-dried at 60°C to constant weight to obtain a brown-yellow product.

[0032] Mix 15g of the above-mentioned tan product with 50g of water and 4-6g of ethylene glycol, add 2-5g of polyvinyl alcohol and 1g of super absorbent resin, heat to 90-95°C, fully dissolve the polyvinyl alcohol and fully swell the resin, Then cool down to about 60°C, add 1-2ml of pomelo peel essential oil, 10g of citric acid, 10g of sodium benzoate, add water to a total of 100g, mix well, pour into an appropriate mold, and cool to get essential oil. odorant.

Embodiment 2

[0034] Weigh 100.0g pomelo peel powder, boil in boiling water for 10min, filter off the juice, rinse with water several times until the lotion is almost colorless, remove and drain. Pour the peel into a round bottom flask, add 1000.0g of 1.5% tartaric acid solution, adjust pH=1.5-2.5 with 3mol / L hydrochloric acid, extract at 85°C, keep warm and stir continuously to obtain the extract. The extract is filtered with a vacuum pump to remove skin dregs, and the filtrate is a slightly yellow transparent pectin solution. Under stirring, inject 95% industrial alcohol into the pectin concentrate cooled to room temperature, and the pectin will coagulate and precipitate in flocculent form. The precipitate was suction-filtered with a vacuum pump to obtain a pectin filter cake, which was washed twice with 95% ethanol, drained, and the ethanol was recovered. The pectin is dried in a vacuum oven to obtain pectin.

[0035] Mix 6g of pectin with 10g of water to fully swell the pectin. The te...

Embodiment 3

[0037] Accurately weigh 5g of β-cyclodextrin and 1g of pomelo peel essential oil, add a certain amount of distilled water, heat in a boiling water bath to completely dissolve the β-cyclodextrin, and make a saturated solution. Cool down to the specified temperature of 40°C, stir at a constant temperature on a magnetic heating stirrer, slowly add 1g of pomelo peel essential oil (dissolved in 1.5ml of ethanol), stir for a while, stop stirring, and refrigerate overnight in the refrigerator. Separation by suction filtration, suction filtration of distilled water in the upper layer, washing with a small amount of petroleum ether, collecting the inclusions in the lower layer, and drying the prepared inclusions in an oven at 30°C for 24 hours to obtain the white powdery pomelo peel essential oil β-cyclodextrin inclusions, namely It is a microcapsule refrigerator deodorant.

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PUM

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Abstract

The invention belongs to the field of the chemical industry, and discloses a refrigerator deodorant and a preparation method thereof. The refrigerator deodorant comprises pomelo peel essential oil, and the pomelo peel essential oil is prepared through the following method: pomelo peel is dried and smashed into pomelo peel powder; the pomelo peel powder is mixed with water according to the mass ratio of 1: 10 to 1: 15 and to be heated and extracted for 3 to 4 hours through refluxing to obtain the pomelo peel essential oil. The refrigerator deodorant also comprises gycol, polyvinyl alcohol, super absorbent resin, citric acid, sodium benzoate and carboxymethyl cellulose activator; or also comprises pomelo peel pectine, tartaric acid and ferrous sulfate; and also comprises beta-cyclodextrin. Chemical compositions of refrigerator deodorant can be reacted with bad-smelly gas. In the refrigerator, the essential oil also can inhibit the growth of bacteria so as to prevent the odor on the source; and at the same time, the refrigerator deodorant is safe and toxic-free, can be reacted at low temperature, and is applicable to the refrigerator environment.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a refrigerator deodorant and a preparation method thereof. Background technique [0002] The preservation effect of the refrigerator on food is an external manifestation that its low temperature and freezing environment can inhibit and delay the reproduction and invasion of bacteria, but the bacteria have not been completely killed and still have certain activity. When the food is left for a long time, the bacteria will slowly decompose the food to produce decomposition products such as ammonia, hydrogen sulfide, mercaptan and methylamine, which is the peculiar smell gas characterized by odor in the refrigerator. As a product of bacteria decomposing food, the odor gas in the refrigerator not only causes people's sensory discomfort, but also deteriorates the original taste of food. [0003] There are many types of refrigerator deodorants currently on the market, mainl...

Claims

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Application Information

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IPC IPC(8): A61L9/012A61L9/013A61L101/56
Inventor 张耀谋朱永松卢少莹吴周青
Owner SOUTH CHINA AGRI UNIV
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