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Microgel for stabilizing and controlling the release of biological enzyme in laundry liquid and laundry liquid comprising the same

A technology of laundry detergent and microgel, applied in the field of laundry detergent, can solve the problems of great influence on stability, complicated preparation method, no universality, etc., and achieves wide application range, simple operation process, and flexible particle size adjustment. Effect

Active Publication Date: 2022-08-05
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation methods of these two ways to protect biological enzymes are complex and costly
The third way is to achieve the effect of stabilizing enzymes by adding enzyme stabilizers, such as dicarboxylates, polyalcohols, polyacids and some inorganic salts, etc. This way can improve the stability of enzymes to a certain extent, but Since the surfactant has a great influence on the stability of the enzyme, when there is AES in the laundry detergent system, the addition of the stabilizer cannot stabilize the enzyme, resulting in the method of adding the enzyme stabilizer is not universal
The fourth way is through the encapsulation of polymers. For example, CN 108949372 A discloses a method of encapsulating biological enzymes with pH-sensitive polymers. ～ The chain segment in the range of 7.5 is unfolded to release the wrapped enzyme, while the range of 8-10 is in a contracted state, which can fix the enzyme in the polymer chain segment. However, many laundry detergents that claim to be mild currently have a pH of 7 ～ The scope of 7.5, this kind of package is not applicable

Method used

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  • Microgel for stabilizing and controlling the release of biological enzyme in laundry liquid and laundry liquid comprising the same
  • Microgel for stabilizing and controlling the release of biological enzyme in laundry liquid and laundry liquid comprising the same
  • Microgel for stabilizing and controlling the release of biological enzyme in laundry liquid and laundry liquid comprising the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Using the compound method of agar, xanthan gum and gellan gum, dissolve 0.7g of agar, 0.2g of xanthan gum, and 0.2g of gellan gum in 80mL of water at 80-90℃ to form a matrix solution, and then cool down to 40-42 ℃ standby;

[0085] Add 20g of protease solution (enzyme activity value of 190,000 U / g) into the matrix, stir well to make the protease evenly dispersed;

[0086] After mixing, drop the matrix into 20L polydimethylsiloxane using a pill-dropping machine (10CP:50CP is 1:1), use deionized water to clean the microgel, remove the oil on the surface, and obtain a microgel containing protease. gel;

[0087] Use 1mm, 1.5mm, and 2mm drip tips respectively to make gel, and the temperature of the cooling medium is 9-12°C.

[0088] After testing by UV spectrophotometer, the encapsulation rate of protease was calculated to be 92%.

[0089] Take a microgel and place it in an oven. After drying, slice it to observe the network structure of the gel. figure 1 shown, through ...

Embodiment 2

[0093] Using the compound method of agar, sodium alginate and hydroxyethyl cellulose, dissolve 0.5g of agar, 0.2g of sodium alginate, and 0.1g of hydroxyethyl cellulose in 80 mL of water at 80 to 90°C to form a matrix solution and cool down. To 40 ~ 42 ℃ standby;

[0094] Add 20g of protease solution (enzyme activity value of 190,000 U / g) into the matrix, stir well to make the protease evenly dispersed;

[0095] After mixing, the matrix was dropped into 5L calcium chloride aqueous solution (concentration-0.5wt%) using a pill-dropping machine, and the microgel encapsulated with protease was obtained after filtration.

[0096] 1mm, 1.5mm, and 2mm drip tips were used to prepare gels, and the concentration of the calcium chloride aqueous solution was 0.5%.

[0097] After testing by UV spectrophotometer, the encapsulation rate of protease was calculated to be 90%.

[0098] Take a microgel and place it in an oven. After drying, slice it to observe the network structure of the gel....

Embodiment 3

[0103] Using the compound method of agar, xanthan gum and hydroxyethyl cellulose, dissolve 0.7g of agar, 0.2g of xanthan gum, and 0.1g of hydroxyethyl cellulose in 80 mL of water at 80 to 90 °C to form a matrix solution and cool down. To 40 ~ 42 ℃ standby;

[0104] Add 20 g of protease solution (enzyme activity of 100,000 U / g) into the matrix solution and stir well to make the protease evenly dispersed;

[0105] After mixing, the matrix was dropped into 1L mixed polydimethylsiloxane (10CP:50CP was 1:5) using a pill-dropping machine, and the microgel was washed with deionized water to remove the oil on the surface to obtain a microgel containing protease. glue.

[0106] Gels were prepared by using 1mm, 1.5mm and 2mm drippers respectively, polydimethylsiloxane was selected as the cooling medium, and the temperature of the cooling medium was selected as 15-20°C.

[0107] After testing by UV spectrophotometer, the encapsulation rate of protease was calculated to be 96%.

[0108...

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Abstract

The present invention provides a microgel for stabilizing and controlling the release of biological enzymes in laundry liquids. The enzyme solution of laundry liquids is added into an aqueous solution of a gel matrix material and mixed, and the gel matrix mixed with the enzymes in laundry liquids is solidified into a gel matrix through a cooling medium. The concentration of the aqueous solution of the gel matrix material is 0.5-3.0 wt%, the activity of the enzyme solution in the laundry liquid is 50,000-1 million U / g, and the mass fraction of the enzyme solution in the laundry liquid in the microgel is 5-25%. %. In the present invention, the biological enzyme is encapsulated in the microgel, and during the storage process, the stability of the enzyme is not affected by temperature, pH, and other components in the laundry liquid. The gel uses natural high molecular polymers, the formation process does not involve synthetic reactions, and neither the preparation process nor the use process will pollute the environment.

Description

technical field [0001] The invention discloses a microgel for stabilizing and controlling the release of biological enzymes in laundry liquids and a laundry liquid comprising the microgels, which can prevent the biological enzymes from decomposing when stored in the laundry liquid. Background technique [0002] Laundry liquid is a liquid detergent. Compared with traditional laundry detergent, laundry liquid has the advantages of neutrality and mildness, no damage to clothes, and no irritation to the skin. Replacing washing powder and soap with laundry detergent can reduce environmental pollution. In recent years, the demand for laundry detergent has increased significantly. However, it is difficult to add biological enzymes to the laundry liquid, which makes the cleaning ability of the laundry liquid weak, which limits the application of the laundry liquid. The biological enzymes added to the laundry liquid include protease, lipase, cellulase, lysozyme, amylase, etc. Becau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D1/83C11D3/60C11D3/386C11D3/39C11D3/04C11D3/37
CPCC11D1/83C11D3/38618C11D3/3942C11D3/044C11D3/222C11D3/373C11D1/66C11D1/29C11D1/146
Inventor 姚丹张川
Owner WANHUA CHEM GRP CO LTD
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