Anticorrosive moisturizing cream as well as preparation method and application thereof

Abstract

The invention relates to the technical field of food additives, in particular to preservative moisturizing cream as well as a preparation method and application thereof. The antiseptic moisturizing cream contains 10-40 parts of an emulsifier, 10-40 parts of a moisture retention agent, 1-10 parts of lower alcohol containing 1-4 carbon atoms, 1-5 parts of organic acid and 20-60 parts of water. The preparation method comprises the following steps: mixing an emulsifier, a moisture retention agent, low alcohol and water to obtain a mixed material; heating the mixed material, adding organic acid to adjust the pH value, and mixing; and finally, cooling, homogenizing and shearing to obtain the anti-corrosion moisturizing cream. The anti-corrosion moisturizing cream is in a uniform flowing state, has relatively good anti-corrosion and moisturizing dual effects, and has a wide potential application market.

Description

Technical Field

[0001] The present invention relates to the technical field of food additives, and particularly relates to an anti-corrosion and moisture retention paste, a preparation method thereof and an application thereof. Background Art

[0002] Food emulsifiers have a broad market in food production in China and have promising development prospects, especially in the applications of pastries, chocolates, ice creams and lactic acid beverages. In the prior art, compound emulsifiers for pastry moisture retention are mostly mixed compound of powdery raw materials, and their main active ingredients are emulsifiers and thickeners. The emulsifier in this component is in the β-crystalline form, and the particles of the emulsifier are relatively large, unable to form a good combination with the starch particles in the flour, and have low activity, so the emulsifier has low efficiency in playing its role and poor effect in preventing starch aging. Some similar products are compounded by hydrogenated vegetable oil and emulsifier through a certain process and are mainly applied to bread and cakes. They have problems of difficult dispersion and adverse effects on defoaming of the batter. This type of emulsified oil is not suitable for application in cakes, and semi-solid emulsified paste is not easy to be quantitatively transported through pipelines and cannot meet the requirements of industrial automatic addition. In addition, the existing compound emulsifiers mostly focus on moisture retention, have relatively single functions and lack additional functions. Summary of the Invention

[0003] The technical problems to be solved by the present invention: In the prior art, most compound emulsifier products only focus on moisture retention and have single functions; the emulsifier obtained by mixing and compounding powdery raw materials has low efficiency in playing its role and the improvement effect is not obvious; semi-solid emulsified paste is not easy to be quantitatively transported through pipelines and cannot meet the requirements of industrial automatic addition.

[0004] In view of the above technical problems, the purpose of the present invention is to provide an anti-corrosion and moisture retention paste, a preparation method thereof and an application thereof. The anti-corrosion and moisture retention paste obtained by the present invention has good dual effects of anti-corrosion and moisture retention.

[0005] Specifically, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides an anti-corrosion and moisture retention paste. Calculated by weight, the anti-corrosion and moisture retention paste contains 10-40 parts of an emulsifier, 10-40 parts of a moisture retention agent, 1-10 parts of a lower alcohol containing 1-4 carbon atoms, 1-5 parts of an organic acid and 20-60 parts of water.

[0007] Preferably, the anti-corrosion and moisture retention paste contains 15-35 parts of an emulsifier.

[0008] More preferably, the anti-corrosion and moisture retention paste contains 20-30 parts of an emulsifier.

[0009] Even more preferably, the anti-corrosion and moisture retention paste contains 20-25 parts of an emulsifier.

[0010] Preferably, the antiseptic and moisturizing paste contains 15 to 40 parts of a water retention agent.

[0011] More preferably, the antiseptic and moisturizing paste contains 30 to 40 parts of a water retention agent.

[0012] Preferably, the antiseptic and moisturizing paste contains 5 to 10 parts of a lower alcohol having 1 to 4 carbon atoms.

[0013] More preferably, the antiseptic and moisturizing paste contains 7 to 10 parts of a lower alcohol having 1 to 4 carbon atoms.

[0014] Preferably, the antiseptic and moisturizing paste contains 20 to 40 parts of water.

[0015] Preferably, the emulsifier is selected from one or more of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, Tween 60, Span 60, diacetyl tartaric acid mono- and diglycerol fatty acid esters, sucrose fatty acid esters, and phospholipids.

[0016] More preferably, the emulsifier is selected from one or more of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, Tween 60, Span 60, and sucrose fatty acid esters.

[0017] Even more preferably, the emulsifier is a combination of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, and Tween 60.

[0018] Preferably, the weight ratio of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, and Tween 60 is 7 to 15:3 to 10:0.5 to 7.

[0019] More preferably, the weight ratio of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, and Tween 60 is 10 to 15:3 to 10:0.5 to 7.

[0020] Even more preferably, the weight ratio of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, and Tween 60 is 10 to 15:3 to 10:3 to 7.

[0021] Preferably, the lower alcohol is selected from one or more of methanol, ethanol, propanol, isopropanol, n-butanol, isobutanol, sec-butanol, and tert-butanol.

[0022] More preferably, the lower alcohol is ethanol;

[0023] Preferably, the water retention agent is selected from one or more of sorbitol, maltitol, propylene glycol, and glycerol.

[0024] More preferably, the water retention agent is selected from one or more of propylene glycol, glycerol, and sorbitol.

[0025] Further preferably, the moisture retention agent is selected from any one or two of propylene glycol, uncombined or combined with glycerol and sorbitol.

[0026] Preferably, the organic acid is selected from one or more of acetic acid, propionic acid, lactic acid, citric acid and sorbic acid.

[0027] More preferably, the organic acid is selected from one or more of sorbic acid, propionic acid, acetic acid and lactic acid.

[0028] Further preferably, the organic acid is selected from any one or two of propionic acid, combined or uncombined with acetic acid and lactic acid.

[0029] In a second aspect, the present invention provides a method for preparing an antiseptic and moisturizing paste, comprising the following steps:

[0030] (1) Mix an emulsifier, a moisture retention agent, a lower alcohol and water to obtain a mixed material;

[0031] (2) Heat up the mixed material, then add an organic acid to adjust the pH and mix;

[0032] (3) Cool down and homogenize and shear to obtain the antiseptic and moisturizing paste.

[0033] Preferably, in step (2), the mixed material is heated to 50-70 °C.

[0034] Preferably, the pH of the mixed material is adjusted to 3-4.

[0035] More preferably, the pH of the mixed material is adjusted to 3-3.5.

[0036] Preferably, in step (1) and / or step (2), the stirring speed during mixing the mixed material is 80-100 rpm.

[0037] Preferably, after adding the organic acid, the mixing time is 20-30 min.

[0038] Preferably, in step (3), the material is cooled down to 15-20 °C.

[0039] Preferably, the pressure for homogenizing and shearing is 0.5-2.0 mpa.

[0040] Preferably, an antiseptic and moisturizing paste, which is prepared by the above preparation method.

[0041] In a third aspect, the present invention provides an application of the antiseptic and moisturizing paste in the food field.

[0042] Preferably, the application of the antiseptic and moisturizing paste in the field of starch foods.

[0043] More preferably, the application of the anti-corrosion and moisture-preserving paste in Chinese-style pastries, cakes or breads.

[0044] Advantages of the present invention

[0045] (1) The anti-corrosion and moisture-preserving paste in the present invention is in a uniform flowing state, with a viscosity of 1000 - 1500 mPa·s. The product has good fluidity and is suitable for quantitative transportation through industrial pipelines.

[0046] (2) The anti-corrosion and moisture-preserving paste in the present invention has good dual functions of anti-corrosion and moisture preservation. After adding the anti-corrosion and moisture-preserving agent of the present invention, the moldy time of bread can be significantly extended, and the shelf life of bread can be extended by more than 70 hours. At the same time, after adding the anti-corrosion and moisture-preserving agent, it is beneficial to increase the height of toast and reduce the hardness of bread, and the effect of inhibiting bread aging is obvious.

[0047] (3) The anti-corrosion and moisture-preserving paste in the present invention has a fast diffusion rate and better binding effect with components such as starch and protein. Description of the drawings

[0048] Figure 1 Product drawing of the anti-corrosion and moisture-preserving paste prepared in Example 1.

[0049] Figure 2 Product drawing of the anti-corrosion and moisture-preserving paste prepared in Example 9.

[0050] Figure 3 Product drawing of the anti-corrosion and moisture-preserving paste prepared in Example 10.

[0051] Figure 4 Product drawing of the anti-corrosion and moisture-preserving paste prepared in Example 11. Detailed implementation manners

[0052] As described above, the purpose of the present invention is to provide an anti-corrosion and moisture-preserving paste, its preparation method and application.

[0053] The anti-corrosion and moisture-preserving paste prepared by the present invention has dual functions of anti-corrosion and moisture preservation. Among them, the moisture preservation function means that after the bread is placed for several days, it can still remain soft. By detecting the hardness value of the bread, the lower the hardness value, the softer the bread, which can prove that the moisture preservation effect is better. The anti-corrosion function means that it has the effect of extending the shelf life of the product, that is, after adding the anti-corrosion and moisture-preserving paste body of the present invention, the mildew time of the product is postponed.

[0054] The present invention enhances the emulsification effect by regulating the hydrophilic-lipophilic balance value (HLB) and compounding technology with an emulsifier of ionic complementarity. Through the heat treatment in the preparation method of the present invention, the molecular crystal form is transformed from the low-energy stable β crystal form into the active high-energy α crystal form, and through the combination with water, a gel-like and relatively stable form is formed. In this form, the binding ability of the hydrophilic groups of the emulsifier with starch, protein, etc. is significantly improved, thereby preventing starch from aging and improving the sticky state of protein after absorbing water. In addition, the addition of a water retention agent is beneficial for maintaining the gel state of the emulsifier on the one hand; on the other hand, the water retention agent can reduce the water activity of the final product, thereby restricting the growth of microorganisms. The synergistic effect of each component enables the obtained anti-corrosion and moisture-preserving paste to have excellent anti-corrosion and moisture-preserving effects and increases the volume of the toast.

[0055] In the present invention, the first object is to provide an anti-corrosion and moisture-preserving paste. By weight, the anti-corrosion and moisture-preserving paste contains 10-40 parts of an emulsifier, 10-40 parts of a water retention agent, 1-10 parts of a lower alcohol containing 1-4 carbon atoms, 1-4 parts of an organic acid, and 20-60 parts of water.

[0056] Preferably, the anti-corrosion and moisture-preserving paste contains 10-40 parts of an emulsifier. For example, it can contain 10-40 parts, 15-35 parts, 20-30 parts, or 20-25 parts of an emulsifier. The emulsifier is selected from one or more of mono- and diglycerol fatty acid esters, sodium stearoyl lactate, Tween 60, Span 60, diacetyl tartaric acid mono- and diglycerol fatty acid esters, sucrose fatty acid esters, and phospholipids; preferably a combination of mono- and diglycerol fatty acid esters, sodium stearoyl lactate, and Tween 60. For example, in some specific embodiments, the anti-corrosion and moisture-preserving paste contains 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, or 40 parts of a combination of mono- and diglycerol fatty acid esters, sodium stearoyl lactate, and Tween 60, or a combination of mono- and diglycerol fatty acid esters, sodium stearoyl lactate, and Tween 60 within the numerical range formed by any two of the above specific values as endpoints;

[0057] And / or, preferably, the antiseptic and moisturizing paste contains 10 to 40 parts of a moisture retainer. For example, it can contain 10 to 40 parts, 15 to 40 parts, or 30 to 40 parts of a moisture retainer. The moisture retainer is selected from one or more of sorbitol, maltitol, propylene glycol, and glycerol; preferably, the moisture retainer is selected from propylene glycol alone or in combination with any one or two of glycerol and sorbitol; for example, in some specific embodiments, the antiseptic and moisturizing paste contains 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, or 40 parts of a moisture retainer of propylene glycol alone or in combination with any one or two of glycerol and sorbitol, or contains a moisture retainer of propylene glycol alone or in combination with any one or two of glycerol and sorbitol within the numerical range formed by any two of the above specific values as endpoints.

[0058] And / or, preferably, the antiseptic and moisturizing paste contains 1 to 5 parts of an organic acid. For example, it can contain 1 to 5 parts, 1 to 4 parts, or 2 to 4 parts of an organic acid. In some specific embodiments, the antiseptic and moisturizing paste contains 1.5, 2, 2.5, 3, 3.5, 4, 4.5, or 5 parts of an organic acid, or contains an organic acid within the numerical range formed by any two of the above specific values as endpoints. The organic acid is selected from one or more of acetic acid, propionic acid, lactic acid, citric acid, and sorbic acid; preferably, the organic acid is selected from propionic acid alone or in combination with any one or two of acetic acid and lactic acid.

[0059] In the present invention, any mono- and diglycerol fatty acid esters in the art can be used in the present invention. For example, but not limited to, mono- and diglycerides formed from oleic acid, linoleic acid, linolenic acid, palmitic acid, behenic acid, stearic acid, or lauric acid fatty acids can be used. Wherein, in the case where the mono- and diglycerol fatty acid esters are a mixture of monoglycerides and diglycerides, it can be a mixture in any proportion.

[0060] In the present invention, the content of monoglycerides in the mono- and diglycerol fatty acid esters used in the examples is ≥95%. Any sucrose fatty acid esters in the art can be used in the present invention. For example, but not limited to, sucrose fatty acid esters formed from commonly used stearic acid, oleic acid, palmitic acid, acetic acid, and / or isobutyric acid fatty acids can be used.

[0061] In the present invention, the second object is to provide a method for preparing an antiseptic and moisturizing paste, comprising the following steps:

[0062] (1) Mix an emulsifier, a moisture retainer, a lower alcohol, and water to obtain a mixed material, and the stirring speed is 80 to 100 rpm;

[0063] (2) Heat the mixed material to 50 to 70 °C, then add an organic acid to adjust the pH to 3 to 4, and the mixing time is 20 to 30 min;

[0064] (3) Cool down to 15 - 20 °C, homogenize and shear at a pressure of 0.5 - 2.0 mpa to obtain the anti-corrosion and moisture-retaining paste.

[0065] All kinds of reagents / instruments used in the embodiments of the present invention are conventional commercially available products unless otherwise specified. The experimental materials and instrument information used in the present invention are shown in the following table:

[0066] Table 1 Experimental materials / instruments and manufacturers

[0067]

[0068] To better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with specific embodiments.

[0069] Example 1

[0070] An anti-corrosion and moisture-retaining paste, by weight, contains 10 parts of mono- and diglycerol fatty acid esters, 9 parts of sodium stearoyl lactate, 3 parts of Tween 60, 10 parts of propylene glycol, 25 parts of glycerol, 2 parts of propionic acid, 1 part of acetic acid, 10 parts of ethanol and 30 parts of water.

[0071] The preparation method of the anti-corrosion and moisture-retaining paste includes the following steps:

[0072] (1) Stir evenly the mono- and diglycerol fatty acid esters, sodium stearoyl lactate, Tween 60, propylene glycol, glycerol, ethanol and water;

[0073] (2) Keep stirring at a low speed, the stirring speed is 80 rpm, while slowly heating the mixture to 70 °C, then slowly add propionic acid and acetic acid in a dropwise manner, adjust the pH to 3.1, and keep stirring for 30 min;

[0074] (3) Cool down the reacted material through a quenching device (plate heat exchanger) to make the outlet material temperature 15 - 20 °C, then shear the material through a high-pressure homogenizer at a pressure of 0.6 mpa, and package and store in the warehouse.

[0075] The state of the anti-corrosion and moisture-retaining paste obtained in Example 1 is as Figure 1 shown. The anti-corrosion and moisture-retaining paste is in a uniform flowing state, and the viscosity of the anti-corrosion and moisture-retaining paste is 1380 mpa·s. Among them, the test method for viscosity includes the following steps: Use a Brookfield rotational viscometer, select the LV04(64) model rotor, rotate at a speed of 100 rpm, test for 60 seconds, and read the final viscosity value.

[0076] Example 2

[0077] An anti-corrosion and moisturizing paste, by weight, contains 12 parts of mono- and diglycerol fatty acid esters, 9 parts of sodium stearoyl lactate, 1 part of Tween 60, 10 parts of propylene glycol, 25 parts of sorbitol, 2 parts of propionic acid, 1 part of acetic acid, 10 parts of ethanol and 30 parts of water.

[0078] The preparation method of the anti-corrosion and moisturizing paste includes the following steps:

[0079] (1) Stir evenly the mono- and diglycerol fatty acid esters, sodium stearoyl lactate, Tween 60, propylene glycol, sorbitol, ethanol and water.

[0080] (2) Keep stirring at a low speed, with a stirring speed of 80 rpm. At the same time, slowly heat the mixture to 70 °C, and then slowly add propionic acid and acetic acid in a feeding manner, adjust the pH to 3.2, and keep stirring for 30 min.

[0081] (3) After the reaction, cool the material through a quenching device to make the outlet material temperature at 15 - 20 °C. Then the material passes through a high-pressure homogenizer for shearing, with a pressure of 0.5 mpa, and is packaged and stored in the warehouse. The viscosity of the obtained anti-corrosion and moisturizing paste is 1460 mpa·s.

[0082] Example 3

[0083] An anti-corrosion and moisturizing paste, by weight, contains 13 parts of mono- and diglycerol fatty acid esters, 7 parts of sodium stearoyl lactate, 2 parts of Tween 60, 10 parts of propylene glycol, 25 parts of glycerol, 2 parts of propionic acid, 1 part of acetic acid, 10 parts of ethanol and 30 parts of water.

[0084] The preparation method of the anti-corrosion and moisturizing paste includes the following steps:

[0085] (1) Stir evenly the mono- and diglycerol fatty acid esters, sodium stearoyl lactate, Tween 60, propylene glycol, glycerol, ethanol and water.

[0086] (2) Keep stirring at a low speed, with a stirring speed of 80 rpm. At the same time, slowly heat the mixture to 70 °C, and then slowly add propionic acid and acetic acid in a feeding manner, adjust the pH to 3.2, and keep stirring for 30 min.

[0087] (3) After the reaction, cool the material through a quenching device to make the outlet material temperature at 15 - 20 °C. Then the material passes through a high-pressure homogenizer for shearing, with a pressure of 0.6 mpa, and is packaged and stored in the warehouse. The viscosity of the obtained anti-corrosion and moisturizing paste is 1311 mpa·s.

[0088] Example 4

[0089] An anti-corrosion and moisturizing paste, by weight, contains 15 parts of mono- and diglycerol fatty acid esters, 4 parts of sodium stearoyl lactylate, 3 parts of Tween 60, 35 parts of propylene glycol, 2 parts of sorbic acid, 1 part of propionic acid, 10 parts of ethanol and 30 parts of water.

[0090] The preparation method of the anti-corrosion and moisturizing paste comprises the following steps:

[0091] (1) Stir mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, Tween 60, propylene glycol, ethanol and water evenly;

[0092] (2) Keep stirring at a low speed, with a stirring speed of 80 rpm. At the same time, slowly heat the mixture to 70 °C, then slowly add sorbic acid and propionic acid in a feeding manner, adjust the pH to 3.0, and keep stirring for 30 min;

[0093] (3) After the reaction, cool the material through a quenching device so that the outlet material temperature is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.5 mpa, and package and store it in the warehouse. The viscosity of the obtained anti-corrosion and moisturizing paste is 1420 mpa·s.

[0094] Example 5

[0095] An anti-corrosion and moisturizing paste, by weight, contains 15 parts of mono- and diglycerol fatty acid esters, 4 parts of sodium stearoyl lactylate, 3 parts of Tween 60, 35 parts of glycerol, 3 parts of sorbic acid, 10 parts of ethanol and 30 parts of water.

[0096] The preparation method of the anti-corrosion and moisturizing paste comprises the following steps:

[0097] (1) Stir mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, Tween 60, glycerol, ethanol and water evenly;

[0098] (2) Keep stirring at a low speed, with a stirring speed of 80 rpm. At the same time, slowly heat the mixture to 70 °C, then slowly add sorbic acid in a feeding manner, adjust the pH to 3.0, and keep stirring for 30 min;

[0099] (3) After the reaction, cool the material through a quenching device so that the outlet material temperature is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.5 mpa, and package and store it in the warehouse. The viscosity of the obtained anti-corrosion and moisturizing paste is 1470 mpa·s.

[0100] Example 6

[0101] An anti-corrosion and moisturizing paste, by weight, contains 15 parts of mono- and diglycerol fatty acid esters, 13.5 parts of sodium stearoyl lactylate, 4.5 parts of Tween 60, 10 parts of propylene glycol, 5 parts of glycerol, 2 parts of propionic acid, 2 parts of acetic acid, 2 parts of ethanol and 35 parts of water.

[0102] The preparation method of the anti-corrosion and moisture-retention paste comprises the following steps:

[0103] (1) Stir evenly mono- and diglycerol fatty acid esters, sodium stearoyl lactate, Tween 60, propylene glycol, glycerol, ethanol and water;

[0104] (2) Keep stirring at a low speed with a stirring speed of 80 rpm. At the same time, slowly heat the mixture to 70 °C, and then slowly add propionic acid and acetic acid in a dropping manner, adjust the pH to 3.0, and keep stirring for 30 min;

[0105] (3) After the reaction, cool the material through a quenching device so that the temperature of the outlet material is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.5 mpa, and package and store in a warehouse. The viscosity of the obtained anti-corrosion and moisture-retention paste is 1480 mpa·s.

[0106] Example 7

[0107] An anti-corrosion and moisture-retention paste, in parts by weight, contains 8 parts of mono- and diglycerol fatty acid esters, 4.5 parts of sodium stearoyl lactate, 1.5 parts of Tween 60, 10 parts of propylene glycol, 10 parts of glycerol, 2 parts of propionic acid, 1 part of acetic acid, 6 parts of ethanol and 40 parts of water.

[0108] The preparation method of the anti-corrosion and moisture-retention paste comprises the following steps:

[0109] (1) Stir evenly mono- and diglycerol fatty acid esters, sodium stearoyl lactate, Tween 60, propylene glycol, glycerol, ethanol and water;

[0110] (2) Keep stirring at a low speed with a stirring speed of 80 rpm. At the same time, slowly heat the mixture to 70 °C, and then slowly add propionic acid and acetic acid in a dropping manner, adjust the pH to 3.0, and keep stirring for 30 min;

[0111] (3) After the reaction, cool the material through a quenching device so that the temperature of the outlet material is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.9 mpa, and package and store in a warehouse. The viscosity of the obtained anti-corrosion and moisture-retention paste is 1050 mpa·s.

[0112] Example 8

[0113] An anti-corrosion and moisture-retention paste, in parts by weight, contains 8 parts of mono- and diglycerol fatty acid esters, 10 parts of sodium stearoyl lactate, 3 parts of Tween 60, 20 parts of glycerol, 1 part of acetic acid, 5 parts of ethanol and 53 parts of water.

[0114] The preparation method of the anti-corrosion and moisture-retention paste comprises the following steps:

[0115] (1) Stir evenly the mono- and diglycerol fatty acid esters, sodium stearoyl lactate, Tween 60, glycerol, ethanol and water;

[0116] (2) Keep stirring at a low speed with a stirring speed of 90 rpm. At the same time, slowly heat the mixture to 70 °C, then slowly add acetic acid in a dropwise manner, adjust the pH to 4.5, and keep stirring for 30 min;

[0117] (3) After the reaction, cool down the material through a quenching device so that the temperature of the outlet material is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.8 mpa, and package and store it in the warehouse. The viscosity of the obtained anti-corrosion and moisture-retention paste is 860 mpa·s.

[0118] Example 9

[0119] An anti-corrosion and moisture-retention paste, in parts by weight, contains 8 parts of mono- and diglycerol fatty acid esters, 5 parts of sodium stearoyl lactate, 3 parts of Tween 60, 20 parts of glycerol, 1 part of sorbic acid, 6 parts of ethanol and 57 parts of water.

[0120] The preparation method of the anti-corrosion and moisture-retention paste includes the following steps:

[0121] (1) Stir evenly the mono- and diglycerol fatty acid esters, sodium stearoyl lactate, Tween 60, glycerol, ethanol and water;

[0122] (2) Keep stirring at a low speed with a stirring speed of 80 rpm. At the same time, slowly heat the mixture to 70 °C, then slowly add sorbic acid in a dropwise manner, adjust the pH to 4.0, and keep stirring for 30 min;

[0123] (3) After the reaction, cool down the material through a quenching device so that the temperature of the outlet material is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.7 mpa, and package and store it in the warehouse. The anti-corrosion and moisture-retention paste obtained in Example 9 shows solid-liquid separation, see Figure 2 , the color in the middle part is dark and opaque, and the color in the lower part is light and relatively transparent. The viscosity of the obtained anti-corrosion and moisture-retention paste is 780 mpa·s.

[0124] Example 10

[0125] An anti-corrosion and moisture-retention paste, in parts by weight, contains 12 parts of mono- and diglycerol fatty acid esters, 9 parts of sodium stearoyl lactate, 1 part of Tween 60, 10 parts of propylene glycol, 25 parts of sorbitol, 5 parts of acetic acid, 10 parts of ethanol and 28 parts of water.

[0126] The preparation method of the anti-corrosion and moisture-retention paste includes the following preparation steps:

[0127] (1) Stir evenly the mono- and diglycerides of fatty acids, sodium stearoyl lactylate, Tween 60, propylene glycol, sorbitol, ethanol and water;

[0128] (2) Keep stirring at a low speed with a stirring speed of 80 rpm. At the same time, slowly heat the mixture to 70 °C, and then slowly add acetic acid in a dropwise manner to adjust the pH to 2.4, and keep stirring for 30 min;

[0129] (3) After the reaction, cool the material through a quenching device so that the outlet material temperature is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.5 mpa, and package and store in the warehouse. The anti-corrosion and moisturizing paste obtained in Example 10 shows solid-liquid separation. See Figure 3 , the upper part is dark and opaque, and the lower part is light and transparent. The viscosity of the obtained anti-corrosion and moisturizing paste is 1405 mpa·s.

[0130] Example 11

[0131] An anti-corrosion and moisturizing paste, by weight, contains 13 parts of mono- and diglycerides of fatty acids, 7 parts of sodium stearoyl lactylate, 2 parts of Tween 60, 15 parts of propylene glycol, 20 parts of glycerol, 2 parts of malic acid, 1 part of propionic acid, 10 parts of ethanol and 30 parts of water.

[0132] The preparation method of the anti-corrosion and moisturizing paste includes the following steps:

[0133] (1) Stir evenly the mono- and diglycerides of fatty acids, sodium stearoyl lactylate, Tween 60, propylene glycol, glycerol, ethanol and water.

[0134] (2) Keep stirring at a low speed with a stirring speed of 80 rpm. At the same time, slowly heat the mixture to 70 °C, and then slowly add malic acid and propionic acid in a dropwise manner to adjust the pH to 3.7, and keep stirring for 30 min;

[0135] (3) After the reaction, cool the material through a quenching device so that the outlet material temperature is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.6 mpa, and package and store in the warehouse. The anti-corrosion and moisturizing paste obtained in Example 11 shows solidification and does not flow. See Figure 4 . The viscosity of the obtained anti-corrosion and moisturizing paste is 1750 mpa·s.

[0136] Example 12

[0137] An anti-corrosion and moisturizing paste, by weight, contains 12 parts of mono- and diglycerides of fatty acids, 9 parts of Span, 3 parts of phospholipids, 10 parts of propylene glycol, 25 parts of glycerol, 2 parts of sorbic acid, 1 part of propionic acid, 10 parts of ethanol and 30 parts of water.

[0138] The preparation method of the anti-corrosion and moisture-preserving paste comprises the following steps:

[0139] (1) Stir evenly the mono- and diglycerol fatty acid esters, span, phospholipids, propylene glycol, glycerol, ethanol and water;

[0140] (2) Keep stirring at a low speed, with the stirring speed being 80 rpm. At the same time, slowly heat the mixture to 70 °C, and then slowly add sorbic acid and propionic acid in a dropping manner, adjust the pH to 3.4, and keep stirring for 30 min;

[0141] (3) After the reaction, cool down the material through a quenching device so that the outlet material temperature is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.6 mpa, and package and store in the warehouse. The viscosity of the obtained anti-corrosion and moisture-preserving paste is 1390 mpa·s.

[0142] Example 13

[0143] An anti-corrosion and moisture-preserving paste, by weight, contains 10 parts of diacetyl tartaric acid mono- and diglycerol esters, 9 parts of sodium stearoyl lactate, 3 parts of Tween 60, 10 parts of propylene glycol, 25 parts of glycerol, 2 parts of propionic acid, 1 part of acetic acid, 10 parts of ethanol and 30 parts of water.

[0144] The preparation method of the anti-corrosion and moisture-preserving paste comprises the following steps:

[0145] (1) Stir evenly the diacetyl tartaric acid mono- and diglycerol esters, sodium stearoyl lactate, Tween 60, propylene glycol, glycerol, ethanol and water;

[0146] (2) Keep stirring at a low speed, with the stirring speed being 80 rpm. At the same time, slowly heat the mixture to 70 °C, and then slowly add propionic acid and acetic acid in a dropping manner, adjust the pH to 3.3, and keep stirring for 30 min;

[0147] (3) After the reaction, cool down the material through a quenching device so that the outlet material temperature is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.9 mpa, and package and store in the warehouse. The viscosity of the obtained anti-corrosion and moisture-preserving paste is 760 mpa·s.

[0148] Example 14

[0149] An anti-corrosion and moisture-preserving paste, by weight, contains 20 parts of mono- and diglycerol fatty acid esters, 9 parts of sodium stearoyl lactate, 3 parts of Tween 60, 10 parts of propylene glycol, 25 parts of glycerol, 2 parts of propionic acid, 1 part of acetic acid, 10 parts of ethanol and 30 parts of water.

[0150] The preparation method of the anti-corrosion and moisture-preserving paste comprises the following steps:

[0151] (1) Stir evenly the monoglyceride and diglyceride fatty acid esters, sodium stearoyl lactate, Tween 60, propylene glycol, glycerol, ethanol and water;

[0152] (2) Keep stirring at a low speed, with the stirring speed being 80 rpm. At the same time, slowly heat the mixture to 70 °C, and then slowly add propionic acid and acetic acid in a feeding manner, adjust the pH to 3.4, and keep the stirring time for 30 min;

[0153] (3) After the reaction, cool down the material through a quenching device so that the outlet material temperature is between 15 and 20 °C. Then, shear the material through a high-pressure homogenizer at a pressure of 0.5 mpa, and then package and store in a warehouse. The viscosity of the obtained anti-corrosion and moisture-retention paste is 2070 mpa·s, and the product is a solidified paste.

[0154] Application Example 1: Performance Testing

[0155] Use the anti-corrosion and moisture-retention paste obtained in each example to prepare bread. The formula and preparation steps of the bread are shown in Table 2 below:

[0156] Table 2 Production formula and production process of bread

[0157]

[0158] Test the anti-corrosion performance and moisture-retention effect of the prepared bread:

[0159] Use a texture analyzer, model TA-XT PLUS, manufactured by SMS Company in the UK, to measure the hardness of the bread. The test steps are as follows: Cut the prepared toast bread into bread slices with a thickness of 2 cm in advance. Select the secondary compression mode in the texture analyzer program to measure the hardness of the bread slices, and the hardness value measured by the device is used as the reaction of the bread hardness. The hardness of the fresh bread is measured at 0 + 1 day, and the hardness of the bread after being refrigerated for 5 days is measured at 0 + 5 d. Use a caliper to measure the height of the toast bread.

[0160] Evaluate the anti-corrosion performance of the product through sensory evaluation. The test steps are as follows: First, disinfect the hands and utensils with 75% ethanol. Then, cut the toast bread into bread slices with a thickness of 2 cm, put them into a disinfected sample bag, and seal it immediately. Place the bread sample in a constant temperature and humidity box at a temperature of 30 °C and a humidity of 75%, and observe the mold growth on the bread surface the next day. The performance test results of the bread added with the anti-corrosion and moisture-retention agent are shown in the following table:

[0161] Table 3 Bread test data results

[0162]

[0163] Note: "Control" refers to the bread product without adding the anti-corrosion and moisture-retention paste.

[0164] As can be seen from the above table, the anti-corrosion and moisturizing paste prepared with the formulations of Examples 1-7 has a good flowing state and a viscosity of 1000-1500 mPa·s. Moreover, after adding the anti-corrosion and moisturizing agent, the mildew time of the bread can be significantly prolonged, and the shelf life of the bread can be extended by more than 70 hours. At the same time, after adding the anti-corrosion and moisturizing agent, it is beneficial to increase the height of the toast and reduce the hardness of the bread, and the effect of inhibiting bread staling is obvious.

[0165] Although the specific implementation manners of the present invention have been described above, it does not limit the protection scope of the present invention. Based on the technical solution of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. An anti-corrosion and moisturizing paste, characterized in that, By weight, the antiseptic and moisturizing paste contains 10 to 40 parts of an emulsifier, 10 to 40 parts of a moisture retainer, 1 to 10 parts of a lower alcohol having 1 to 4 carbon atoms, 1 to 5 parts of an organic acid, and 20 to 60 parts of water.

2. The anti-corrosion and moisture-retention paste according to claim 1, wherein, By weight, the antiseptic and moisturizing paste contains 15 to 35 parts of an emulsifier; preferably, the antiseptic and moisturizing paste contains 20 to 30 parts of an emulsifier; more preferably, the antiseptic and moisturizing paste contains 20 to 25 parts of an emulsifier; And / or, the antiseptic and moisturizing paste contains 15 to 40 parts of a moisture retainer; preferably, the antiseptic and moisturizing paste contains 30 to 40 parts of a moisture retainer; And / or, the antiseptic and moisturizing paste contains 5 to 10 parts of a lower alcohol having 1 to 4 carbon atoms; preferably, the antiseptic and moisturizing paste contains 7 to 10 parts of a lower alcohol having 1 to 4 carbon atoms; And / or, the antiseptic and moisturizing paste contains 20 to 40 parts of water.

3. The anti-corrosion and moisture-preserving paste according to claim 1 or 2, wherein, The emulsifier is selected from one or more of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, Tween 60, Span 60, mono- and diglycerol fatty acid esters of diacetyl tartaric acid, sucrose fatty acid esters, and phospholipids; Preferably, the emulsifier is selected from one or more of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, Tween 60, Span 60, and sucrose fatty acid esters.

4. The anti-corrosion and moisture-preserving paste according to claim 3, wherein, The emulsifier is a combination of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, and Tween 60; Preferably, the weight ratio of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, and Tween 60 is 7 to 15:3 to 10:0.5 to 7; More preferably, the weight ratio of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, and Tween 60 is 10 to 15:3 to 10:0.5 to 7; Even more preferably, the weight ratio of mono- and diglycerol fatty acid esters, sodium stearoyl lactylate, and Tween 60 is 10 to 15:3 to 10:3 to 7.

5. The anti-corrosion and moisture-retaining paste according to any one of claims 1-4, wherein, The lower alcohol is selected from one or more of methanol, ethanol, propanol, isopropanol, n-butanol, isobutanol, sec-butanol, and tert-butanol; Preferably, the lower alcohol is ethanol; And / or, the moisture retainer is selected from one or more of sorbitol, maltitol, propylene glycol, and glycerol; Preferably, the moisture retainer is selected from one or more of propylene glycol, glycerol, and sorbitol; More preferably, the moisture retainer is selected from propylene glycol alone or in combination with either or both of glycerol and sorbitol.

6. The anti-corrosion and moisture-preserving paste according to any one of claims 1-5, wherein, The organic acid is selected from one or more of acetic acid, propionic acid, lactic acid, citric acid, and sorbic acid; Preferably, the organic acid is selected from one or more of sorbic acid, propionic acid, acetic acid, and lactic acid; More preferably, the organic acid is selected from propionic acid alone or in combination with either or both of acetic acid and lactic acid.

7. The preparation method of the antiseptic and moisturizing paste according to any one of claims 1-6, characterized in that, Comprising the following steps: (1) Mix the emulsifier, moisture retainer, lower alcohol, and water to obtain a mixed material; (2) Heat the mixed material, then add an organic acid to adjust the pH and mix; (3) Cool down and homogenize and shear to obtain the antiseptic and moisturizing paste.

8. The preparation method of the anti-corrosion and moisture-preserving paste according to claim 7, wherein, In step (2), heat the mixed material to 50 to 70 °C; And / or, adjust the pH of the mixed material to 3 to 4; preferably, adjust the pH of the mixed material to 3 to 3.

5.

9. The preparation method of the anti-corrosion and moisture-retaining paste according to claim 7 or 8, wherein, In step (1) and / or step (2), the stirring speed is 80 - 100 rpm when mixing the mixed materials; And / or, after adding the organic acid, the mixing time is 20 - 30 min.

10. The preparation method of the anti-corrosion and moisture-retaining paste according to any one of claims 7-9, wherein, In step (3), the materials are cooled to 15 - 20 °C; And / or, the pressure of the homogenizing shear is 0.5 - 2.0 mpa.

11. An anti-corrosion and moisture-retaining paste, characterized in that, The anti-corrosion and moisture retention paste is prepared by the preparation method described in any one of claims 7 - 10.

12. The application of the anti-corrosion and moisture retention paste described in any one of claims 1 - 6 or claim 11 in the food field; Preferably, the application of the anti-corrosion and moisture retention paste in the field of starchy foods; More preferably, the application of the anti-corrosion and moisture retention paste in Chinese-style pastries, cakes or breads.

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