JPH01181739A - Mold release agent - Google Patents

Abstract

PURPOSE:To obtain a mold release agent consisting of animal and plant lecithin capable of dispersing into water and water, having low viscosity because of containing no oil and fats and having excellent spray suitability without especially using with a jet gas or maintaining in the state of emulsion. CONSTITUTION:The aimed mold release agent consisting of animal and plant lecithin (preferably obtained through processes such as alcohol fractionation, acetone fractionation, membrane fractionation, enzyme treatment, hydroxylation alkali hydrolysis, hydrogenation, etc.) capable of dispersing into water and water.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a mold release agent comprising a specific lecithin dispersed in water. This product has the advantage of not using propellant gas (but can be easily sprayed).

(b) Conventional technology Mold release agents are used for food, teppanyaki, and confectionery.

In addition to being used for bread making, baking sheets, etc., it is also used for industrial purposes such as rubber products and plastic products. It is known that lecithin is used as a mold release agent.

For example, as an oil for teppanyaki, a method characterized by adding and dissolving lecithin and propylene glycol unsaturated fatty acid ester in vegetable liquid oil for the purpose of suppressing sputtering phenomenon (Japanese Patent Application Laid-open No. 103405/1983), A method characterized by blending lecithin and polyglycerin fatty acid ester alone or in combination with polyglycerin fatty acid ester and other emulsifiers in oil and fat (JP-A-1982-1999)
181738), etc.

On the other hand, there are methods for spraying these mold release agents, such as pump spray (non-aerosol type) and propellant gas (aerosol type), but conventional mold release agents containing lecithin do not Lecithin is dissolved in oil and fat, and because the oil has a high viscosity, it has poor sprayability with a pump spray, and in most cases, a method using propellant gas has been adopted. That is, this is a method in which a mold release agent is placed in a pressure vessel and a gas such as chlorofluorocarbon gas, liquefied petroleum gas, nitrous oxide gas, nitrogen gas, or carbon dioxide gas is sealed therein.

(C) Problems to be solved by the invention However, when using propellant gas for food applications, in addition to the spray effect, consideration must be given to food hygiene, legal regulations, and safety. Nothing satisfactory has been found. For example, when liquefied petroleum gas is used as the propellant gas, there is a risk of fire if this mold release agent is used in a place with open flames.

Furthermore, in the case of industrial applications, spray mold release agents filled in pressure vessels are not only disadvantageous in terms of cost, but also inexpensive industrial spray mold release agents often use solvents such as toluene. It was harmful to the workers.

In order to improve sprayability, attempts have been made to add water to conventional mold release agents to create an emulsion type, but when this product is sprayed onto a hot frying pan or hot iron plate, water splashes and springs occur. It had drawbacks such as being dangerous.

(d) Means for Solving the Problems The purpose of the present invention is to provide a safe and flavorful mold release agent that can be easily sprayed without using propellant gas and exhibits a sufficiently good mold release effect. It is in.

As a result of intensive research, the present inventors found that the above object could be achieved by preparing water-dispersible lecithin and dispersing it in water, and based on this, completed the present invention.

That is, the present invention relates to a mold release agent comprising water and animal/vegetable lecithin that is dispersible in water.

,゛ The above-mentioned water-dispersible animal and plant lecithin is made from lecithin from egg yolk, cow brain, soybean, rapeseed, etc., and is subjected to alcohol fractionation, acetone fractionation, membrane fractionation, enzyme treatment, hydroxylation, and alkaline hydrolysis. , and hydrogenation, preferably including enzyme treatment.

Note that the above raw materials are not limited to these.

Also, alcohol separation, acetone separation, membrane separation.

Enzyme treatment, hydroxylation, alkaline hydrolysis.

Each step of hydrogenation can be carried out by conventional methods and does not require any special means.

The enzyme used in the enzyme treatment step is a hydrolytic enzyme such as lipase or phospholipase, and this treatment significantly increases the water dispersibility of animal and plant lecithin. Therefore, in the present invention, it is desirable to adopt this enzyme treatment step. However, as long as the lecithin is obtained through at least one of the other steps, the purpose of the present invention can be achieved, so the enzyme treatment step is not essential.

In addition to lecithin, it is also possible to blend a synthetic emulsifier, but since the water-dispersible lecithin used in the present invention has a sufficient mold release effect, it is better to use it alone by dispersing it in water. desirable. It is also possible to add a small amount of oil, but for example, when considering splashing on frying pans, sprayability, low calorie properties, etc. for food applications, 50%
It is preferably 10% or less.

The mold release agent of the present invention is prepared by adding lecithin to water by 0.1 to 50x, preferably 0.1 to 50x, by stirring with a propeller or a homomixer.
It can be manufactured by dispersing 1 to 35χ.

Since no particular propellant gas is required for spraying this product, it can be used by filling a pump spray type non-aerosol type container such as a hand sprayer.

Note that there is no problem in filling this mold release agent into an aerosol type container using a propellant gas, and the present invention does not exclude such a form.

(e) Examples Example 1 The mold release agent having the composition shown in Table 1 and filled in a hand spray container had good spray spread and particle fineness, and had almost no splashing on the frying pan. Moreover, it was safe and there were no problems even when sprayed into fire.

Table 1 The method for producing powdered enzyme-treated soybean lecithin is as follows.

20g of powdered soybean lecithin, which is obtained by removing triglycerides from pasty soybean lecithin using a solvent, in 180g of warm water.
and homogeneously suspend using a homomixer. Add an appropriate amount of IN potassium hydroxide aqueous solution and adjust the pH to 8.0.
Add 0.2 liters of 1M calcium chloride aqueous solution.

After heating to 50°C, the enzyme source of phospholipase A was removed, 0.2 g of pork pancreatin (manufactured by Wako Pure Chemical Industries, Ltd.) was added, and the reaction was carried out with stirring. During the reaction, the pH is maintained at 8.0 to 9.0 while adding an appropriate amount of IN potassium hydroxide aqueous solution.

After 8 hours, hydrochloric acid was added to adjust the pH to 7.0 to complete the reaction.

This product has an acid value of 66, a peroxide value of 0, and an acetone insoluble content of 9.
It is 7χ.

Example 2 A mold release agent having the composition shown in Table 2 and filled into a hand spray container had good spray spread and particle fineness, and almost no frying pan splashing. It was also safe to spray into fire, and there were no problems at all.

Table 2 The method for producing paste-like enzyme-treated soybean lecithin is as follows.

Disperse 40g of paste lecithin in 160g of warm water,
Homo, emulsify with a mixer. Add an appropriate amount of IN sodium hydroxide aqueous solution to adjust the pH to 8.0, and add 0.2w+1 of 1N chloride aqueous solution. After heating to 50° C., 0.02 ml of phospholipase A (Lecitase 10L, manufactured by Novo Industries) is added, and the reaction is carried out with stirring. During the reaction, the pH is maintained at 8.0 to 9.0 while adding an appropriate amount of aqueous sodium hydroxide solution. After 6 hours, an appropriate amount of hydrochloric acid is added to adjust the pH to 7.0 to stop the reaction. Concentration and drying are performed to obtain 18 g of enzyme-treated lecithin.

This product has an acid value of 65, a peroxide value of O, and an acetone insoluble content of 5.
It's on 5th.

Example 3 The mold release agent having the composition shown in Table 3 and filled into a hand spray container had good spray spread and particle fineness, and almost no frying pan splashing. It is also safe to spray into fire, and there were no problems.

Table 3 The method for producing acetone fractionated egg yolk lecithin is as follows.

500g of egg yolk was mixed with hexane:ethanol = 70:302.
In addition to 5 kg, the mixture was dispersed for 1 hour using a homomixer, then left to stand and a hexane layer was taken. The solvent was removed to obtain 123 g of egg yolk oil. 615 g of acetone was added to this mixture, and 30 steps were repeated twice using a homomixer. Thereafter, the mixture was allowed to stand at 5° C. for 24 hours to obtain an insoluble portion. This was dried to obtain 34 g of acetone fractionated egg yolk lecithin.

This product has an acid value of 16, a peracid content value of 0, and an acetone insoluble content of 99%.

Example 4 When a mold release agent having the composition shown in Table 4 and filled in a hand spray container was sprayed onto a baking mold, the sprayability was uniform and good.

As a control, I filled a hand sprayer with commercially available mold release oil (vegetable liquid oil with lecithin and propylene-glycol unsaturated fatty acid ester added and dissolved; the same applies hereinafter) and tried spraying it, but the oil particles It did not spread and was sprayed in a linear pattern, making it impossible to apply it evenly.

Table 4 The method for producing alcohol-fractionated enzyme-treated rapeseed lecithin is as follows.

20 g of purified high-purity rapeseed lecithin obtained by ethanol fractionation treatment is dispersed in 180 g of warm water and homogeneously suspended using a homomixer. Add an appropriate amount of IN aqueous sodium hydroxide solution to adjust the pH to 8.0, and add 0.2 ml of IM aqueous calcium chloride solution. After heating to 50° C., 50+ig of phospholipase A (phospholipase Ai, manufactured by Sigma) was added, and the reaction was carried out with stirring. The pH is maintained between 8.0 and 9.0 while adding the same amount of IN sodium hydroxide solution during the reaction. After 4 hours, hydrochloric acid was added to adjust the pH to 7.0 to stop the reaction, and alcohol fractionation and enzyme-treated rapeseed lecithin 19
get g.

This product has an acid value of 71, a peracid content value of 0, and an acetone insoluble content of 98%.

Example 5 When a mold release agent having the composition shown in Table 5 and filled in a hand spray container was sprayed onto a mold, the sprayability was uniform and good.

Table 5 The method for producing hydroxylated hydrogenated soybean lecithin is as follows.

3 kg of pasty soybean lecithin is stirred three times with 61 g of acetone to remove neutral fats, fatty acids, etc. to obtain a precipitate mainly consisting of phospholipids, which is then dried.

Dissolve 200g of this high-purity soybean lecithin (iodine value 85) in twice the amount of hexane, add lactic acid and hydrogen peroxide value, and carry out a hydroxylation reaction using a conventional method to obtain hydroxylated high-purity soybean lecithin (iodine value 33). Obtained.

Double the amount of benzene/ethanol for the next 300g = 5
71 as a catalyst in a 22 autoclave.
0χ palladium carbon 2χ, hydrogen pressure 20Kg/C1
1", temperature: 50°C, reaction time: 4 hours. After filtering off the catalyst, the solvent was distilled off to obtain 180 g of hydroxylated and hydrogenated high-purity soybean lecithin (iodine value: 3).
I got it.

Example 6 Using the mold release agents of Examples 1 to 3, hard-boiled eggs were fried, and the releasability from the frying pan was evaluated. The frying pan was heated to 150° C. and sprayed uniformly with the mold release agent of the present invention. After heating for a few seconds to evaporate the water and create an extremely thin film of lecithin, egg wash was added and baked.

As a control, the same operation was performed when nothing was applied to the frying pan and when soybean white squeezed oil was applied.

When the mold release agents of Examples 1 to 3 were used and when soybean white squeezed oil was applied, both showed good releasability, but when nothing was applied, the eggs stuck to the frying pan, and I couldn't peel it off. In addition, the workability when repeatedly baking thinly baked eggs was higher than that in Examples 1 to 3 compared to using soybean white oil.
was much better and simpler.

Example 7 Using the mold release agents of Examples 1 to 3, in the same manner as Example 6,
I grilled commercially available yakiniku with sauce (however, the frying pan was heated to 200℃).
). When using the mold release agents of Examples 1 to 3,
When soybean white squeezed oil was applied, good peelability was exhibited, although there was some scorching due to the sauce, but when nothing was applied, the entire meat stuck to the frying pan and could not be peeled off. In addition, when the meat is grilled by adding a mold release agent after the meat is charred by the sauce, the mold release agents of Examples 1 to 3 have a superior mold release effect compared to the case of soybean oil. Indicated.

Example 8 Using the mold release agent of Example 4, bread was baked according to the recipe shown in Table 6. The dough was made by the direct burying method and baked at 200°C for 40 minutes.

Table 6 As a control, bread was baked in the same manner in cases where nothing was applied to the baking mold and cases where commercially available mold release oil was applied with a brush.

When using the mold release agent of Example 4 and when applying commercially available mold release oil with a brush, it was possible to easily take out the bread by simply inverting the mold and giving it a slight impact, but when nothing was applied If not, the bread could not be taken out. Furthermore, the mold release agent of Example 4 had significantly better workability than the case where commercially available mold release oil was applied with a brush, and was suitable for mass production.

Example 9 The mold release agent of Example 5 was sprayed onto an aluminum mold, heated for a few seconds to evaporate the water, and then molded with lecithin (a thin film was created and the resin was poured into it by a casting method). A styrene resin was molded. After curing, the solidified product was taken out. As a control, a styrene resin was manufactured using a mold release agent prepared by dissolving lecithin in toluene by 5x. There was no difference in mold release properties between the two. However, the control product caused severe toluene evaporation, which caused problems in the working environment of workers, whereas the mold release agent of Example 5 did not pollute the environment at all. I was able to work comfortably.

(f) Effects of the Invention The mold release agent of the present invention consists of lecithin and water and does not contain fats and oils unlike conventional agents. Therefore, the viscosity of the product is low, making it suitable for spraying without using propellant gas or making it into an emulsion. Also, solvents such as toluene and ethyl acetate, which were used to lower the viscosity, can be used. Therefore, the mold release agent of the present invention has the advantage of eliminating various drawbacks associated with the use of propellant gases, emulsion types, and solvents, and maximizing the mold release effect of lecithin.

Claims (2)

[Claims] (1) A mold release agent consisting of water and animal and plant lecithin that is dispersible in water. (2) Animal and plant lecithins that are dispersible in water are subjected to alcohol fractionation, acetone fractionation, membrane fractionation, enzyme treatment, hydroxylation,
The mold release agent according to claim 1, which is obtained through one or more steps selected from alkaline hydrolysis and hydrogenation.