阅读说明：本技术 一种人工模拟奶制品和奶茶饮品生产中的uht污垢及其制备方法 (UHT dirt in production of artificial simulated milk product and milk tea beverage and preparation method thereof ) 是由 李洪阳 徐文澜 于 2019-12-03 设计创作，主要内容包括：本发明公开了一种人工模拟奶制品和奶茶饮品生产中的UHT污垢及其制备方法,涉及污垢清洁领域,每100g污垢中,包括：60～80ml纯牛奶、2～3g茶多酚、0.1～1.5g炭黑、0.1～0.5g过碳酸钠、0.1～1.5g糖,余量为水；制备方法为：将60～80ml纯牛奶、2～3g茶多酚、0.1～1.5g炭黑、0.1～0.5g过碳酸钠、0.1～1.5g糖加水至100g混合均匀形成污垢液,将0.2～0.5ml污垢液施加在不锈钢挂片上；放置在温度为20～40℃,湿度为75～80％的环境中老化36～48h后,放入温度为120～140℃的高压釜中加热30～60min,最后放入温度为20～40℃,湿度为75～80％的环境中老化至少24h。本发明能够得到与实际污垢相似度较高的污垢,便于对清洁剂配方的效果进行验证。(The invention discloses UHT dirt in the production of artificial simulated milk products and milk tea drinks and a preparation method thereof, relating to the field of dirt cleaning, wherein every 100g of dirt comprises the following components: 60-80 ml of pure milk, 2-3 g of tea polyphenol, 0.1-1.5 g of carbon black, 0.1-0.5 g of sodium percarbonate, 0.1-1.5 g of sugar and the balance of water; the preparation method comprises the following steps: adding water into 60-80 ml of pure milk, 2-3 g of tea polyphenol, 0.1-1.5 g of carbon black, 0.1-0.5 g of sodium percarbonate and 0.1-1.5 g of sugar until the weight of the mixture is 100g, uniformly mixing to form a dirt solution, and applying 0.2-0.5 ml of the dirt solution on a stainless steel hanging piece; placing the mixture in an environment with the temperature of 20-40 ℃ and the humidity of 75-80% for aging for 36-48 h, then placing the mixture into an autoclave with the temperature of 120-140 ℃ for heating for 30-60 min, and finally placing the mixture into an environment with the temperature of 20-40 ℃ and the humidity of 75-80% for aging for at least 24 h. The invention can obtain the dirt with higher similarity with the actual dirt, and is convenient for verifying the effect of the formula of the cleaning agent.)

1. A UHT dirt in the production of artificial simulated milk products and milk tea drinks is characterized in that: per 100g of soil, including: 60-80 ml of pure milk, 2-3 g of tea polyphenol, 0.1-1.5 g of carbon black, 0.1-0.5 g of sodium percarbonate, 0.1-1.5 g of sugar and the balance of water.

2. The UHT scale in the production of artificial simulated milk products and milk tea beverages according to claim 1, wherein: per 100g of soil, including: 65-80 ml of pure milk, 2.3-2.8 g of tea polyphenol, 0.5-1.2 g of carbon black, 0.2-0.4 g of sodium percarbonate, 0.5-1.2 g of sugar and the balance of water.

3. The UHT scale in the production of artificial simulated milk products and milk tea beverages according to claim 2, wherein: per 100g of soil, including: 75ml of pure milk, 2.5g of tea polyphenol, 1g of carbon black, 0.25g of sodium percarbonate, 1g of sugar and the balance of water.

4. A process for the preparation of an artificial simulated UHT fouling according to any of claims 1 to 3, characterized in that: the method comprises the following steps:

adding water into 60-80 ml of pure milk, 2-3 g of tea polyphenol, 0.1-1.5 g of carbon black, 0.1-0.5 g of sodium percarbonate and 0.1-1.5 g of sugar until the weight of the mixture is 100g, uniformly mixing to form a dirt solution, and applying 0.2-0.5 ml of the dirt solution on a stainless steel hanging piece; placing the mixture in an environment with the temperature of 20-40 ℃ and the humidity of 75-80% for aging for 36-48 h, then placing the mixture into an autoclave with the temperature of 120-140 ℃ for heating for 30-60 min, and finally placing the mixture into an environment with the temperature of 20-40 ℃ and the humidity of 75-80% for aging for at least 24 h.

5. A process for the preparation of an artificial simulated UHT soil according to claim 4 wherein: the temperature of the first aging is 35 ℃, the humidity is 75%, and the aging time is 40 h.

6. A process for the preparation of an artificial simulated UHT soil according to claim 4 wherein: the pressure in the autoclave is more than 0.2MPa, the temperature is 135 ℃, and the heating time is 50 min.

7. A process for the preparation of an artificial simulated UHT soil according to claim 4 wherein: the temperature of the second aging is 35 ℃, the humidity is 75%, and the aging time is 30 h.

Technical Field

The invention relates to the field of dirt cleaning, in particular to UHT dirt in the production of artificial simulated milk products and milk tea drinks and a preparation method thereof.

Background

UHT (Ultra High temperature sterilized, english-called Ultra High temperature sterilization) is a method for sterilizing food by heating (130 to 150 ℃) within a very short time (2 to 3 seconds), can rapidly kill spores remaining in milk and beverages, and is widely used in the production of milk, fruit juice, cream, soybean milk, yogurt, wine, soup, honey, and thick soup.

In food and beverage production, where production equipment needs to be cleaned in place after a certain time of production of one phase, known in the industry as CIP, residues left on the surfaces of the equipment can promote the growth of microorganisms, and residues need to be routinely removed from the surfaces of the equipment in order to protect consumers from potential health risks associated with pathogens or poisons, to maintain product quality.

The CIP operation flow is as follows: the process water is used for circularly rinsing, the composite alkaline cleaning agent is used for circularly rinsing, the process water is used for circularly rinsing again, the composite acidic cleaning agent is used for circularly rinsing again, and finally the process water is used for circularly rinsing, wherein the alkaline cleaning agent is used for dissolving organic dirt such as saccharides, protein, grease and the like in food and beverage, and the composite acidic cleaning agent is used for dissolving inorganic salt precipitated dirt.

The dirt produced in the food and beverage industry often contains multiple components depending on the product being processed, and therefore cleaning of equipment in the food industry requires alternate cleaning with complex alkaline cleaners and complex acidic cleaners.

At present, before CIP alkaline cleaner products are actually used, cleaner formula design and experimental effect verification are needed, when the experimental effect verification is carried out, practical manual simulation dirt generally acts on the cleaner, and the current manual dirt mainly comprises the following two types: alkaline cleaners for food tools and Industrial Equipment Artificial fouling: mixing beef tallow, lard, refined vegetable oil, glyceryl monostearate, sugar water solution and egg white in a ratio of 16:16:32:3.2:30: 2.8; general Water-based Metal Cleaner "Artificial soil: vaseline, 20# engine oil, 30# engine oil, lanolin magnesium soap, barium petroleum sulfonate, calcium-based grease, lanolin and alumina powder. The main components of the artificial dirt are grease, the difference between the main components of the artificial dirt and actual UHT dirt components is large, during the high-temperature sterilization process of food and beverage, protein, sugar, tea polyphenol and other organic matters in the food and beverage are denatured, polymerized, carbonized or oxidized to form dirt which is accumulated on the inner wall of UHT equipment, compared with the artificial dirt taking the grease as the main component, the actual UHT dirt not only has different components, but also has different physical forms, the standard artificial dirt is liquid or soft at a slightly higher temperature, the standard artificial dirt is mostly changed into liquid with larger viscosity when the temperature exceeds 80 ℃, and the UHT dirt is solid when the temperature reaches 130 ℃.

The temperature of CIP cleaning is mostly about 85 ℃, even higher, so after the laboratory effect verification of the CIP cleaning agent is carried out by adopting the existing artificial dirt, the cleaning agent suitable for the artificial dirt has poor decontamination effect when the actual CIP operation is carried out, a result of better cleaning effect cannot be achieved, and the cleaning agent suitable for CIP cleaning is difficult to obtain.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide UHT dirt in the production of artificial simulated milk products and milk tea drinks and a preparation method thereof, which can obtain a cleaning agent suitable for cleaning and have better decontamination effect in actual use.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

a UHT soil in the production of artificial simulated milk products and milk tea drinks comprises the following components in every 100g of soil: 60-80 ml of pure milk, 2-3 g of tea polyphenol, 0.1-1.5 g of carbon black, 0.1-0.5 g of sodium percarbonate, 0.1-1.5 g of sugar and the balance of water.

Further, per 100g of the soil, the soil comprises: 65-80 ml of pure milk, 2.3-2.8 g of tea polyphenol, 0.5-1.2 g of carbon black, 0.2-0.4 g of sodium percarbonate, 0.5-1.2 g of sugar and the balance of water.

Further, per 100g of the soil, the soil comprises: 75ml of pure milk, 2.5g of tea polyphenol, 1g of carbon black, 0.25g of sodium percarbonate, 1g of sugar and the balance of water.

A preparation method for artificially simulating UHT dirt comprises the following steps:

adding water into 60-80 ml of pure milk, 2-3 g of tea polyphenol, 0.1-1.5 g of carbon black, 0.1-0.5 g of sodium percarbonate and 0.1-1.5 g of sugar until the weight of the mixture is 100g, uniformly mixing to form a dirt solution, and applying 0.2-0.5 ml of the dirt solution on a stainless steel hanging piece; placing the mixture in an environment with the temperature of 20-40 ℃ and the humidity of 75-80% for aging for 36-48 h, then placing the mixture into an autoclave with the temperature of 120-140 ℃ for heating for 30-60 min, and finally placing the mixture into an environment with the temperature of 20-40 ℃ and the humidity of 75-80% for aging for at least 24 h.

Further, the temperature of the first aging is 35 ℃, the humidity is 75%, and the aging time is 40 h.

Further, the pressure in the autoclave is more than 0.2MPa, the temperature is 135 ℃, and the heating time is 50 min.

Further, the temperature of the second aging is 35 ℃, the humidity is 75%, and the aging time is 30 h.

Compared with the prior art, the invention has the advantages that:

(1) the UHT dirt in the production of the artificial simulated milk product and the milk tea beverage and the preparation method thereof have higher similarity of the components and the dirt generated in the UHT process of foods and beverages, and have similar physical forms, sugar, pure milk, tea polyphenol and other substances in the foods and the beverages can denature, oxidize, polymerize or carbonize organic substances due to high temperature in the UHT process, and the structure of carbon black is similar to a black substance formed by carbonizing low molecular weight organic substances caused by high temperature in the production process of UHT; however, the floccule can be formed by directly mixing the pure milk and the tea polyphenol, the pH value can be adjusted by adding the sodium percarbonate, the separation of casein in the pure milk near the isoelectric point can be avoided, the mixed dirt liquid can generate oxides similar to UHT components in a high-temperature environment by utilizing the oxidizability of the sodium percarbonate, the similarity between artificial dirt and actual dirt in the embodiment is improved, and the experimental accuracy is further effectively improved.

The artificial dirt in the embodiment of the invention acts with different detergents, and the cleaning effects of different detergents are obviously different, so that the cleaning effect of the detergent can be better reflected, and the artificial dirt in the embodiment is used as a test object, so that a proper detergent formula can be screened out, and the cleaning effect is better in practical use.

The embodiment of the invention also shows that the selected cleaning agent can achieve better cleaning effect through a CIP cleaning experiment performed on the selected cleaning agent, visual inspection, microbiological test, olfactory monitoring, pH value and conductivity detection, and the result shows that the artificial dirt component prepared by the embodiment of the invention has higher similarity with UHT dirt in the production of milk products and milk tea drinks, can be used as a good substitute dirt for selection of the cleaning agent, and can also be used as a reliable test product for researching UHT dirt in actual production.

Detailed Description

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

The embodiment of the invention provides UHT dirt in the production of artificial simulated milk products and milk tea drinks, which is prepared from the following components in parts by weight per 100g of dirt: 60-80 ml of pure milk, 2-3 g of tea polyphenol, 0.1-1.5 g of carbon black, 0.1-0.5 g of sodium percarbonate, 0.1-1.5 g of sugar and the balance of water.

In actual production and use, the specific proportion is adjusted according to actual needs, and can be as follows: each 100g of dirt comprises 65-80 ml of pure milk, 2.3-2.8 g of tea polyphenol, 0.5-1.2 g of carbon black, 0.2-0.4 g of sodium percarbonate, 0.5-1.2 g of sugar and the balance of water.

The optimal proportion is as follows: every 100g of dirt comprises 75ml of pure milk, 2.5g of tea polyphenol, 1g of carbon black, 0.25g of sodium percarbonate, 1g of sugar and the balance of water.

The invention also provides a preparation method for artificially simulating UHT dirt, which comprises the following steps:

adding water into 60-80 ml of pure milk, 2-3 g of tea polyphenol, 0.1-1.5 g of carbon black, 0.1-0.5 g of sodium percarbonate and 0.1-1.5 g of sugar until the weight of the mixture is 100g, uniformly mixing to form a dirt solution, and applying 0.2-0.5 ml of the dirt solution on a stainless steel hanging piece; placing the mixture in an environment with the temperature of 20-40 ℃ and the humidity of 75-80% for aging for 36-48 h, then placing the mixture into an autoclave with the temperature of 120-140 ℃ for heating for 30-60 min, and finally placing the mixture into an environment with the temperature of 20-40 ℃ and the humidity of 75-80% for aging for at least 24 h.

The aging time, the specific temperature and the specific humidity can be adjusted according to actual needs, and in the embodiment, the temperature for the first aging is 35 ℃, the humidity is 75%, and the aging time is 40 h; the pressure in the autoclave is more than 0.2MPa, the temperature is 135 ℃, and the heating time is 50 min; the temperature of the second aging is 35 ℃, the humidity is 75%, and the aging time is 30 h.

The components of the artificial UHT dirt prepared by the embodiment of the invention have higher similarity with the dirt generated in the UHT process of foods and beverages, and the physical forms of the dirt are similar, substances such as sugar, pure milk, tea polyphenol and the like in the foods and the beverages can denature, oxidize, polymerize or carbonize organic substances due to high temperature in the UHT process, and the structure of the carbon black after reaction is similar to a black substance formed by carbonizing low molecular weight organic substances due to high temperature in the production process of the UHT; however, the floccule can be formed by directly mixing the pure milk and the tea polyphenol, the pH value can be adjusted by adding the sodium percarbonate, the casein in the pure milk is prevented from being separated out at the isoelectric point, and the mixed dirt liquid can generate oxides similar to the UHT component in a high-temperature environment by utilizing the oxidizability of the sodium percarbonate, so that the similarity between the artificial dirt and the actual dirt in the embodiment is improved, and the experimental accuracy is further effectively improved.

The invention is explained in more detail below by means of 5 examples and a comparative example.