CN107955759B

CN107955759B - Alkaline cleaning agent for aseptic processing equipment of dairy beverage and preparation method thereof

Info

Publication number: CN107955759B
Application number: CN201711215391.9A
Authority: CN
Inventors: 宋金武; 张丽蓉; 黎英文; 吴清平
Original assignee: Guangdong Huankai Microbial Sci and Tech Co Ltd
Current assignee: Guangdong Huankai Microbial Sci and Tech Co Ltd
Priority date: 2017-11-28
Filing date: 2017-11-28
Publication date: 2020-03-31
Anticipated expiration: 2037-11-28
Also published as: CN107955759A

Abstract

The invention discloses an alkaline cleaning agent for aseptic processing equipment of dairy drinks and a preparation method thereof. The alkaline cleaning agent for the aseptic processing equipment of the dairy beverage consists of the following raw materials in percentage by mass: 45-49% of sodium hydroxide; 0.5-2% of a solubilizer; 0.1-0.6% of nonionic surfactant; 0.5-2% of a chelating agent; 0.2-0.6% of a dispersant; the balance of water. Simultaneously discloses a preparation method of the alkaline cleaning agent for the aseptic processing equipment of the dairy beverage. The alkaline cleaning agent is obtained by taking sodium hydroxide as a main component and compounding the components such as the surfactant, the chelating agent, the dispersing agent and the like, so that the decontamination performance and the anti-fouling redeposition performance of the cleaning agent are enhanced, and the alkaline cleaning agent can be used for cleaning the aseptic processing equipment of the dairy beverage.

Description

Alkaline cleaning agent for aseptic processing equipment of dairy beverage and preparation method thereof

Technical Field

The invention relates to an alkaline cleaning agent for aseptic processing equipment of dairy drinks and a preparation method thereof.

Background

The traditional beverage filling technology generally adopts a hot filling mode, and the beverage is in a high-temperature state for a long time, so that the taste of the product is changed and the nutrition is lost. Aseptic cold filling refers to cold filling performed under strict aseptic conditions, overcomes the influence of hot filling on products, and is the most popular beverage packaging form at present. In addition, the method has wide product application range, and the great saving of the packing material cost is an important factor which attracts the favor of beverage enterprises most. The dairy beverage ingredients generally comprise milk powder, white granulated sugar, other additives, watermelon juice, coconut juice, banana juice and other raw materials which are added according to the flavor of the product. The product is instantaneously sterilized at high temperature in the production process, and the product can be adhered to a pipeline of equipment in the high-temperature sterilization process, so that the cleaning is difficult. If the cleaning is not thorough, taste channeling is easily caused during the production of different products, and the product quality is influenced.

At present, the beverage sterile processing equipment mainly adopts a CIP cleaning (cleaning in place) system, and the used cleaning agent is mainly industrial acid-base or traditional composite acid-base cleaning agent. The cleaning effect of the industrial acid and alkali is poor due to single component; due to the wide application range of the traditional composite acid-base, the dirt in the aseptic processing equipment cannot meet the requirement of manufacturers when being cleaned. The invention develops products aiming at the formation type of the milk beverage dirt, and can effectively remove stubborn dirt generated after the production.

CN106479782A discloses a CIP alkaline cleaning agent, wherein the content of sodium hydroxide is less than or equal to 40%, which can not meet the concentration requirement of manufacturers on the CIP alkaline cleaning agent (the content of sodium hydroxide in the CIP alkaline cleaning agent is more than or equal to 45%), as is known, when the content of sodium hydroxide in a product is more than or equal to 45%, a surfactant is difficult to add into the product, the content of sodium hydroxide in the technical scheme of the file is low, and the difficulty of compounding the surfactant is greatly reduced; anionic surfactants are rich in foam, whereas CIP cleaning requires the use of a substantially foam-free cleaning agent. CN103074179A discloses an alkaline cleaning agent for food contact surfaces of liquid milk equipment, wherein a surfactant is not compounded in the formula of the alkaline cleaning agent. CN105462714A discloses a high-concentration alkaline cleaning agent, wherein a surfactant is not compounded in the formula.

Disclosure of Invention

The invention aims to provide an alkaline cleaning agent for aseptic processing equipment of dairy beverages and a preparation method thereof.

The technical scheme adopted by the invention is as follows:

an alkaline cleaning agent for aseptic processing equipment of dairy beverages comprises the following raw materials in percentage by mass:

further, the solubilizer is alkyl glycoside surfactant with carbon chain length of C6-C8.

Preferably, the solubilizer is at least one of SL4, IC06, IC08, AG6202 and AG 6206.

Furthermore, the nonionic surfactant is alkyl alcohol ether nonionic surfactant with cloud point of 30-60 ℃.

Preferably, the nonionic surfactant is at least one of Berol260, Berol266, Berol840, Ethyllan 1005, Ethyllan 1206, Nonidet SF-5, Tomadol 1-5, and Tomadol 25-7.

Furthermore, the chelating agent is at least one of hydroxyethylidene diphosphonic acid tetrasodium, 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid, ethylene diamine tetramethylene phosphonic acid sodium, hexamethylene diamine tetramethylene phosphonic acid, amino trimethylene phosphonic acid pentasodium and sodium gluconate.

Further, the dispersant is at least one of polyaspartic acid, polyepoxysuccinic acid and hydrolyzed polymaleic anhydride.

The preparation method of the alkaline cleaning agent for the aseptic processing equipment of the dairy beverage comprises the steps of mixing and stirring the solubilizer and the water, adding the nonionic surfactant, mixing and stirring, then adding the chelating agent and the dispersing agent, stirring uniformly, and finally adding the liquid alkali, mixing and stirring to obtain the alkaline cleaning agent.

In the preparation method of the alkaline cleaning agent, the concentration of sodium hydroxide in the used liquid alkali is 45-55 wt%.

The invention has the beneficial effects that:

the alkaline cleaning agent is obtained by taking sodium hydroxide as a main component and compounding the components such as the surfactant, the chelating agent, the dispersing agent and the like, so that the decontamination performance and the anti-fouling redeposition performance of the cleaning agent are enhanced, and the alkaline cleaning agent can be used for cleaning the aseptic processing equipment of the dairy beverage.

The method comprises the following specific steps:

1) the cleaning agent takes high-concentration sodium hydroxide as a main component, and is compounded with a surfactant, so that the surface tension of the product is reduced, the wettability is shortened, and the detergency is enhanced.

2) The glucoside surfactant in the cleaning agent is compounded with the nonionic surfactant, and the nonionic surfactant has an emulsifying effect, can emulsify and disperse dirt removed by alkali, and is beneficial to removing the dirt.

3) The cleaning agent is compounded with a chelating agent and a dispersing agent, so that the anti-soil redeposition performance is effectively improved, and the comprehensive soil removal performance of the product is improved.

Drawings

FIG. 1 is a graph showing the effect of the cleaning solution after cleaning in example 1 and comparative example 1.

Detailed Description

preferably, the mass ratio of the solubilizer to the nonionic surfactant is not less than 3: 1.

Preferably, the mass ratio of the chelating agent to the dispersing agent is not less than 2: 1.

Further, the solubilizer is alkyl glycoside surfactant with carbon chain length of C6-C8; preferably, the solubilizer is at least one of SL4, IC06, IC08, AG6202 and AG 6206.

Further, the nonionic surfactant is an alkyl alcohol ether nonionic surfactant with a cloud point of 30-60 ℃; preferably, the nonionic surfactant is at least one of Berol260, Berol266, Berol840, Ethyllan 1005, Ethyllan 1206, Nonidet SF-5, Tomadol 1-5, and Tomadol 25-7.

Further, the chelating agent is at least one of hydroxyethylidene diphosphonic acid tetrasodium (HEDP-4Na), 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid (PBTCA), ethylene diamine tetra methylene phosphonic acid sodium (EDTMPS), Hexamethylene Diamine Tetra Methylene Phosphonic Acid (HDTMPA), amino trimethylene phosphonic acid pentasodium (ATMP-5Na) and sodium gluconate; further preferably, the chelating agent is tetrasodium hydroxyethylidenediphosphonate.

Further, the dispersant is at least one of Polyaspartic Acid (PASP), polyepoxysuccinic acid (PESA) and hydrolyzed polymaleic anhydride (HPMA); further preferably, the dispersant is polyaspartic acid.

In the preparation method of the alkaline cleaning agent, preferably, the concentration of sodium hydroxide in the used liquid alkali is 45-55 wt%; further preferably, the concentration of sodium hydroxide in the liquid caustic soda used is 50 wt%.

The present invention will be described in further detail with reference to specific examples.

First, screening of solubilizer

The alkali resistance test is carried out on the surfactant capable of resisting high alkali, and the tested surfactant comprises an amphoteric surfactant, a glucoside surfactant and the like. The compound was compounded with sodium hydroxide, and the appearance and stability were measured. And (3) carrying out detergency measurement on the screened surfactant according to a method of alkaline cleaning agent for food tools and industrial equipment (QB/T4314-2012).

The test formulation contained 45% sodium hydroxide, and the results of the decontamination test were shown in table 1 for samples compatible with 45% sodium hydroxide. The using concentration of the product is the content of sodium hydroxide.

TABLE 1 solubilizer screening test results

Numbering	Surface active agent	Adding amount of	Compatibility of medicines	Product use concentration	Decontamination ratio (%)
						1#	FC-40	2％	Cannot be combined	2％	-
2#	SL4	2％	Compatibility of medicines	2％	90.6
						3#	AS48	2％	Cannot be combined	2％	-
4#	SL7G	2％	Compatibility of medicines	2％	82.3
						5#	Amphoteric 400	2％	Cannot be combined	2％	-
6#	Witcolate D-510	2％	Cannot be combined	2％	-
						7#	LFG 61	2％	Compatibility of medicines	2％	81.6
8#	DGR 81	2％	Compatibility of medicines	2％	81.9
						9#	AG6202	2％	Compatibility of medicines	2％	93.1
10#	AG6206	2％	Compatibility of medicines	2％	90.7
						11#	DF-30	2％	Compatibility of medicines	2％	82.9
12#	DF-35	2％	Compatibility of medicines	2％	83.7
						13#	IC06	2％	Compatibility of medicines	2％	91.1
14#	IC08	2％	Compatibility of medicines	2％	91.5
							Liquid caustic soda	-	-	2％	74.9

From the experimental results in table 1, it is known that after SL4, AG6202, AG6206, IC06, IC08 are compounded with sodium hydroxide, the detergency of the product can be effectively improved, and the cleaning effect is relatively optimal after the surfactants are compounded.

Screening of nonionic surfactant

Under the alkaline condition, the solubilizer and the nonionic surfactant are compounded, the stability of the system and the compounding ratio of the solubilizer and the nonionic surfactant are tested, and the decontamination effect of the compounded surfactant is tested.

Specifically, AG6202 was used as a solubilizing agent to test the stability and detergency of the compound with a nonionic surfactant, wherein the content of sodium hydroxide in the sample was 45%, the total addition amount of the surfactant was 2%, and the test results are shown in Table 2.

TABLE 2 results of nonionic surfactant screening experiments

Screening of chelating Agents

The chelating agent was tested for compatibility with 45% sodium hydroxide, with a chelating agent addition of 1%, and tested for stain removal, with the results shown in table 3.

TABLE 3 chelating agent screening test results

Numbering	Surface active agent	Concentration of use	Decontamination ratio (%)
				1#	HEDP-4Na	2％	80.7
2#	PBTCA	2％	79.2
				3#	EDTMPS	2％	78.7
4#	HDTMPA	2％	77.4
				5#	ATMP-5Na	2％	77.5
6#	Sodium gluconate	2％	76.3

Fourthly, screening of dispersing agent

The compatibility of the dispersant and 45% sodium hydroxide was tested, the chelating agent was HEDP-4Na with an addition of 1% and the dispersant with an addition of 0.5%, and the results of the tests were shown in Table 4.

TABLE 4 dispersant screening test results

Numbering	Surface active agent	Concentration of use	Decontamination rate%
				1#	PASP	2％	86.7
2#	PESA	2％	83.2
				3#	HPMA	2％	84.7

Fifth, preparation of sample

The cleaning agent example products were formulated according to the experimental results screened above.

Example 1:

the cleaner product of example 1 was prepared as follows: mixing and stirring the alkyl glycoside surfactant AG 620215 kg and 5kg of water uniformly; then adding 2605 kg of alkyl alcohol ether Berol to the mixture, stirring and dissolving the mixture evenly; then adding 10kg of chelating agent HEDP-4Na and 5kg of dispersing agent PASP, and stirring and dissolving uniformly; 960kg of liquid caustic soda (NaOH concentration 50 wt%) was then added thereto and stirred uniformly to obtain the product of example 1.

Example 2:

the cleaner product of example 2 was prepared as follows: mixing and stirring the alkyl glycoside surfactant AG 620215 kg and 5kg of water uniformly; then adding 8405 kg of alkyl alcohol ether Berol into the mixture, and stirring and dissolving the mixture evenly; then adding 10kg of chelating agent HEDP-4Na and 5kg of dispersing agent PASP, and stirring and dissolving uniformly; 960kg of liquid caustic soda (NaOH concentration 50 wt%) was then added thereto and stirred uniformly to obtain the product of example 2.

Example 3:

the cleaner product of example 3 was prepared as follows: dissolving an alkyl glycoside surfactant SL 415 kg in 5kg of water, and uniformly mixing and stirring; then adding 2605 kg of alkyl alcohol ether Berol to the mixture, stirring and dissolving the mixture evenly; then adding 10kg of chelating agent HEDP-4Na and 5kg of dispersing agent PASP, and stirring and dissolving uniformly; 960kg of liquid caustic soda (NaOH concentration 50 wt%) was then added thereto and stirred uniformly to obtain the product of example 3.

Sixthly, the foam performance of the product

The foam properties of the products of examples 1-3 were measured using a Ross-Miles foam tester (Ross-Miles method), and the results are shown in Table 5.

TABLE 5 comparison of foam Properties of the products

Seventh, the decontamination property of the product

The cleaning agent product is tested for its decontamination performance, and the detergency is determined according to the alkaline cleaning agent for food tools and industrial equipment (QBT4314-2012), and the dirt is made from coconut milk produced by some beverage factories.

The product without the surfactant is selected for effect comparison, and the three comparative examples are as follows:

comparative example 1:

comparative example 1 is the product of example 1 disclosed in "a high-concentration alkaline cleaner for food industry equipment having scale-inhibiting dispersion function" (CN 105462714A).

Comparative example 2:

comparative example 2 is a commercially available similar detergent product without the addition of surfactant.

Comparative example 3:

comparative example 3 is a liquid caustic soda having a NaOH concentration of 50 wt%.

The experimental results of examples 1 to 3 and comparative examples 1 to 3 are shown in Table 6.

TABLE 6 stain removal Performance of example and comparative cleaner samples

Sample (I)	Concentration of use	Decontamination ratio (%)
			Example 1	2％	100
Example 2	2％	100
			Example 3	2％	100
Comparative example 1	2％	92.1
			Comparative example 2	2％	90.4
Comparative example 3	2％	78.5

The decontamination performance of the product is tested, after the cleaning is finished, the cleaning liquid of the product in the example 1 is milky, the dirt on the steel sheet is emulsified and dispersed, and no blocky dirt is seen in the solution; the cleaning solution of the comparative example 1 has large-scale dirt floating, and the redeposition phenomenon occurs in the actual cleaning process. FIG. 1 is a graph showing the effect of the cleaning solution after cleaning in example 1 and comparative example 1.

The products of example 1 and comparative example 2 of the present invention were applied to a beverage plant and the aseptic processing equipment was cleaned according to the same cleaning procedure, with the following results: after the similar product of the comparative example 2 is used for cleaning, attached scales are attached to the inner wall of the tube after the tube is disassembled and observed, and the cleaning is not thorough; after the product of the embodiment 1 of the invention is used for cleaning, the tube is disassembled to observe the brightness of the tube wall as new and no dirt exists.

Claims

1. An alkaline cleaning agent for aseptic processing equipment of dairy drinks is characterized in that: the composite material consists of the following raw materials in percentage by mass:

the solubilizer is at least one of SL4, IC06, IC08, AG6202 and AG 6206;

the nonionic surfactant is at least one of Berol260, Berol266, Berol840, Ethyl lan1005, Ethyl lan1206, Nonidet SF-5, Tomadol 1-5 and Tomadol 25-7.

2. The alkaline cleaner for aseptic processing equipment of dairy beverages as defined in claim 1, wherein: the chelating agent is at least one of hydroxyethylidene diphosphonic acid tetrasodium, 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid, ethylene diamine tetra methylene phosphonic acid sodium, hexamethylene diamine tetra methylene phosphonic acid, amino trimethylene phosphonic acid pentasodium and sodium gluconate.

3. The alkaline cleaner for aseptic processing equipment of dairy beverages as defined in claim 1, wherein: the dispersant is at least one of polyaspartic acid, polyepoxysuccinic acid and hydrolyzed polymaleic anhydride.

4. A preparation method of an alkaline cleaning agent for aseptic processing equipment of dairy beverages is characterized by comprising the following steps: firstly, mixing and stirring a solubilizer and water, then adding a nonionic surfactant, mixing and stirring, then adding a chelating agent and a dispersing agent, uniformly stirring, and finally adding liquid alkali, mixing and stirring to obtain the alkaline cleaning agent, wherein the composition of the alkaline cleaning agent is as defined in any one of claims 1-3.

5. The preparation method of the alkaline cleaner for the aseptic processing equipment of dairy beverages as claimed in claim 4, wherein the alkaline cleaner comprises: the concentration of the sodium hydroxide in the liquid caustic soda is 45 wt% -55 wt%.