Bacteriostatic composition and application thereof in bacteriostatic laundry detergent

A composition and compound technology, applied in the field of daily chemicals, can solve the problem of insignificant microbial effect, and achieve the effect of improving bacteriostatic effect, good bactericidal performance and prolonging time.

Active Publication Date: 2016-05-25
ZHONGSHAN AIHU COMMODITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Studies have found that natural antibacterial agents with natural ingredients as the main body have good antibacterial effects, but because natural antibacterial agents often have a "fence effect", that is, they have a strong inhibitory effe

Method used

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  • Bacteriostatic composition and application thereof in bacteriostatic laundry detergent
  • Bacteriostatic composition and application thereof in bacteriostatic laundry detergent
  • Bacteriostatic composition and application thereof in bacteriostatic laundry detergent

Examples

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Effect test

Embodiment 1

[0046] (1) Preparation of low molecular weight chitosan quaternary ammonium salt: the carboxymethyl chitosan (molecular weight is 5 * 10 4) was dissolved in 30 parts by mass of hydrochloric acid solution with a concentration of 2mol / L, hydrolyzed at 80°C for 5h, irradiated with 254nm ultraviolet light for 2h, ultrasonicated for 30min (ultrasonic frequency 28KHz, power 1000KW), and filtered through an organic ultrafiltration membrane (the membrane specification is pore size≤ 1000Da), adjust the pH to 6, slowly add the carbonyl-containing compound (obtained by mixing 0.75 parts by mass p-tolylaldehyde and 0.75 parts by mass of p-tolylaldehyde) dissolved in 15 parts by mass of absolute ethanol in advance, and stir at 50 ° C (300rpm) After reacting for 0.5h, add 10 mass parts of 1% sodium borohydride aqueous solution by mass and stir for 1h, add absolute ethanol (make the ethanol concentration reach 80-90% by volume in the overall solution) for precipitation, pump Filter, dry, gri...

Embodiment 2

[0055] (1) Preparation of low molecular weight chitosan quaternary ammonium salt: the carboxymethyl chitosan (molecular weight is 2 * 10 5 ) dissolved in 30 mass parts of 4mol / L hydrochloric acid solution at 90°C for 8h, 254nm ultraviolet light irradiation for 4h, ultrasonication for 40min (ultrasonic frequency 28KHz, power 1000KW), and filtration through an organic ultrafiltration membrane (the membrane specification is pore size≤1000Da) , adjust the pH to 7, slowly add the carbonyl compound (obtained by mixing 1 mass part of p-tolylaldehyde and 1 mass part of p-tolylaldehyde) dissolved in 15 mass parts of absolute ethanol in advance, stir at 60°C (400rpm ) after reacting for 1 hour, adding 10 parts by mass of 3% sodium borohydride aqueous solution and stirring for 2 hours, adding excess absolute ethanol (making the ethanol concentration reach 80-90% by volume in the overall solution) for precipitation, pumping Filter, dry, grind and weigh; take 1.5 parts by mass of the resul...

Embodiment 3

[0064] (1) Preparation of low molecular weight chitosan quaternary ammonium salt: the carboxymethyl chitosan (molecular weight is 3 * 10 5 ) was dissolved in 30 parts by mass of 6mol / L hydrochloric acid solution, hydrolyzed at 100°C for 10h, irradiated with 254nm ultraviolet light for 8h, ultrasonicated for 60min (ultrasonic frequency 28KHz, power 1000KW), and filtered through an organic ultrafiltration membrane (the membrane specification is pore size≤1000Da ), adjust pH8, slowly add carbonyl-containing compound (mixed by 1.5 parts by mass p-tolylaldehyde and 1.5 parts by mass of p-tolylaldehyde) dissolved in 15 parts by mass of absolute ethanol in advance, and stir at 70°C ( 500rpm) after reacting for 2 hours, adding 10 parts by mass of 5% sodium borohydride aqueous solution and stirring for 3 hours, adding excess absolute ethanol (making the ethanol concentration reach 80-90% by volume in the overall solution) for precipitation, Suction filtration, drying, grinding, and wei...

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Abstract

The invention discloses a bacteriostatic composition and application thereof in bacteriostatic laundry detergent. The bacteriostatic composition which is microencapsulated is prepared by using p-methyl phenylacetaldehyde and/or p-methoxy phenylacetaldehyde to prepare low-molecular-weight chitosan quaternary ammonium salt and using the low-molecular-weight chitosan quaternary ammonium salt, soybean extract and olive leaf extract for preparation. The bacteriostatic composition has good antibacterial effect on Gram-negative bacteria, positive bacteria, moulds and saccharomycetes and plays a role in coordinated bacterium inhibition and sterilization, and bacteriostatic effect is improved; the bacteriostatic composition is high in stabilizer, lasting in bacteristatic effect and suitable for being applied in preparing the bacteriostatic laundry detergent.

Description

technical field [0001] The invention relates to the technical field of daily chemicals, in particular to an antibacterial composition and its application in antibacterial laundry detergent. Background technique [0002] Bacteriostatic agents refer to substances that can keep the activity of microorganisms such as bacteria, fungi, algae, yeast and viruses at a low level within a certain period of time, inhibit their growth and reproduction, and prevent them from multiplying too much. Generally, bacteriostatic agents can be divided into three categories: organic bacteriostatic agents, inorganic bacteriostatic agents and natural bacteriostatic agents. [0003] Chitosan is the only alkaline amino polysaccharide that exists in large quantities in natural sugars. Because of its protonated ammonium, protonated ammonium can interact with the negatively charged cell membrane of bacteria, interfere with the function of the bacterial cell membrane, cause the loss of cytoplasm in the ba...

Claims

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Application Information

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IPC IPC(8): A01N25/28A01N65/20A01N43/16A01P1/00A01P3/00C11D10/04
CPCA01N25/28A01N43/16A01N65/00A01N65/20C11D1/29C11D1/66C11D10/042C11D10/045A01N2300/00
Inventor 梁嘉伟梁玉暖陈锡其
Owner ZHONGSHAN AIHU COMMODITY
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