JP6093992B2 - Grease spray for food machine and method for producing grease spray for food machine - Google Patents

Description

  The present invention relates to a safe grease spray for food machinery, which consists only of edible raw materials and gas, and a method for producing the same.

  As a lubricant such as grease used for machinery (food machinery) used for processing foods, high safety is required. This is because the lubricant adhering to the food machine cannot be denied to be mixed into the food or drink produced by the machine. For this reason, as raw materials for lubricants for food machinery, raw materials used for food and medical use such as animal and vegetable oils and liquid paraffin are preferred. For example, Patent Document 1 discloses a lubricating oil composition for food machinery in which a saturated fatty acid triglyceride is used as a base oil and a fatty acid having 12 to 22 carbon atoms is blended in an amount of 0.001 to 5% by mass.

  Saturated fatty acid triglycerides are not only excellent in safety, but also have high oxidation stability and good fluidity. For this reason, it is also preferable as a spray oil that requires high fluidity in order to spray uniformly in a mist form. For example, in Patent Document 2, in the liquid oil for spray application, the flavor and properties unique to edible oils are obtained by combining a blended oil obtained by mixing vegetable oil and medium-chain fatty acid triglyceride at a specific blending ratio and nitrogen gas. It is disclosed that it can be uniformly sprayed on cooking utensils and foods / food ingredients without damage.

Japanese Patent Laid-Open No. 2-209995 JP 2001-178364 A

Grease is semi-solid and is generally applied with a spatula or the like, but a spray type that can be applied more easily is also preferred.
However, there has been no grease spray that is safe and has suitable properties as a spray in terms of foaming and dripping.

  An object of the present invention is to provide a grease spray for food machinery, which is safe and hardly foams and dripping, and has a good feeling as a spray, and a method for producing the same.

  As a result of intensive investigations to solve the above problems, the present inventors have obtained a safe grease spray for food machinery by using only edible raw materials as raw materials other than gas. By using calcium stearate, liquid edible oil, and ethanol as raw materials at a specific content ratio, it was found that an excellent grease spray that is difficult to foam and dripping can be obtained, and the present invention was completed. It was.

That is, the grease spray for food machinery and the manufacturing method thereof according to the present invention are the following (1) to ( 3 ).
(1) It consists of a composition and gas consisting only of edible raw materials containing calcium stearate, liquid edible oil, and ethanol,
The gas contains one or more selected from the group consisting of carbon dioxide, nitrogen gas, nitrous oxide gas, and LP gas, and the content ratio (mass) of the composition consisting of only the edible raw material and the gas. Is in the range of 1: 1.2 to 1: 2.2,
The content ratio (mass) of calcium stearate and liquid edible oil is in the range of 1: 1.1 to 1: 2.5, and the content ratio of the sum of calcium stearate and liquid edible oil to ethanol ( A grease spray for food machinery, characterized in that the mass) is in the range of 1: 0.2 to 1: 1.
( 2 ) The grease spray for food machinery according to (1) , wherein the liquid edible oil is a medium-chain fatty acid triglyceride.
( 3 ) The content ratio (mass) of calcium stearate, liquid edible oil, and ethanol is within a range of 1: 1.1 to 1: 2.5, and calcium stearate. And the composition which consists only of edible raw material contained so that content ratio (mass) of the sum of liquid edible oil and ethanol may exist in the range of 1: 0.2-1: 1 at 50 degrees C or less. After mixing, the container is filled with gas, and the gas contains at least one selected from the group consisting of carbon dioxide gas, nitrogen gas, nitrous oxide gas, and LP gas, and consists of only the edible raw material objects and content ratio of the gas (mass) 1: 1.2 to 1: characterized in der Rukoto the range of 2.2, the manufacturing method of food grade grease spray.

  ADVANTAGE OF THE INVENTION According to this invention, the grease spray for food machines which can be used safely with respect to a food machine, and is excellent in the usability | use_condition which is hard to foam and dripping can be provided simply.

  In the specification of the present application, “foaming” of grease spray means the ease of occurrence of irregularities formed when gas is vaporized from the sprayed grease. As a grease spray, it is preferable that foaming is less. In the specification of the present application, “spattering” of the grease spray means scattering of the grease outside the target range when sprayed. As a grease spray, it is preferable that there is little scattering. In the specification of the present application, “liquid dripping” of grease spray means the ease of dripping of grease when sprayed on a vertical wall. As a grease spray, it is preferable that there is little dripping.

  The grease spray for food machinery according to the present invention (hereinafter sometimes simply referred to as “grease spray”) is a composition consisting of only edible raw materials (hereinafter sometimes simply referred to as “edible composition”). It consists of gas. For this reason, the grease spray according to the present invention can be used extremely safely for food machines.

  The edible composition in the grease spray according to the present invention contains calcium stearate, liquid edible oil, and ethanol in a specific ratio. Calcium stearate is a safe food additive with no use criteria and is used as a thickener in the present invention.

  The shape of calcium stearate used as a raw material for the grease spray according to the present invention is preferably a powder because of its good dispersibility in liquid edible oil, and has a maximum particle size of 1 mm or less. More preferably, it is a fine particle. Among them, in the state filled in the container, calcium stearate is less likely to settle, and it is less likely to be uneven when sprayed, and the sprayed grease is not rough, so the maximum particle size is 500 μm or less, Those having an average particle diameter of 1 to 50 μm are particularly preferred. As the calcium stearate used in the grease spray according to the present invention, those commercially available as food additives can be used as they are. The particle diameter of calcium stearate can be measured by a conventional method using, for example, a laser diffraction / scattering particle size analyzer.

  In the grease spray according to the present invention, calcium stearate is contained in a state dispersed in liquid oil. Calcium stearate in the liquid oil exists as particles or aggregates thereof, unlike the fibrous form such as metal soap contained in the conventional grease. For this reason, the grease spray according to the present invention has a relatively low viscosity and is easily dispersed in liquid oil and ethanol, so that it is easy to spray uniformly.

  The liquid edible oil used as a raw material of the grease spray according to the present invention may be any oil that is edible and is liquid at the grease spray operating temperature. For example, edible oil that is liquid at 20 ° C. is preferable, and edible oil that is liquid at 5 ° C. is more preferable. As the edible oil, for example, vegetable oils, animal oils, synthetic oils and semi-synthetic oils designated as foods and food additives can be used. Specifically, soybean oil, rapeseed oil, sesame oil, corn oil, noodle seed oil, safflower oil, olive oil, sunflower oil, peanut oil, rice oil, palm oil, coconut oil, flaxseed oil, camellia oil, tea oil, beef tallow, Pork fat, sardine oil, herring oil, liquid fractionated oil of these oils, slightly hydrogenated oil, transesterified oils of these oils, transesterified oils of these oils with fatty acids and glycerin, glycerin fatty acid esters, fatty acids and glycerin Synthetic oils and the like. The liquid edible oil may be only one kind or a mixture of two or more kinds.

  The liquid edible oil used in the grease spray according to the present invention is preferably a triglyceride containing a medium chain fatty acid residue because of its excellent oxidation stability and fluidity, and a medium chain fatty acid triglyceride (having 6 to 6 carbon atoms). 12 triglycerides composed of 12 fatty acids and glycerin) or medium long chain triglycerides (esters composed of 6 to 12 carbon atoms, 13 or more fatty acids and glycerin), and preferably medium chain triglycerides. More preferred. The medium chain fatty acid triglyceride may be a synthetic oil, and it is also preferable to use a vegetable oil having a high content of medium chain fatty acid triglyceride.

  Specific examples of the fatty acid having 6 to 12 carbon atoms used as a raw material for the fatty acid triglyceride include caproic acid (hexanoic acid), caprylic acid (octanoic acid), capric acid (decanoic acid), and lauric acid (dodecanoic acid). It is done. As the medium chain fatty acid triglyceride, a triglyceride composed of a medium chain fatty acid having 8 to 12 carbon atoms is more preferable, and a triglyceride having a fatty acid residue derived from a medium chain fatty acid having 8 to 10 carbon atoms is 80% by mass or more. Specific examples of fatty acids having 13 or more carbon atoms used as a raw material for fatty acid triglycerides include myristic acid (tetradecanoic acid), palmitic acid (hexadecanoic acid), stearic acid (octadecanoic acid), oleic acid (cis-9-). Examples include octadecenoic acid), linoleic acid (octadecadienoic acid), linolenic acid (octadecanetrienoic acid), arachidic acid (eicosanoic acid), erucic acid (docosenoic acid), and behenic acid (docosanoic acid).

  As the medium chain fatty acid triglyceride used as the liquid edible oil, a commercially available product may be used as it is. For example, “ODO” (caprylic acid: capric acid = 75: 25), “scoole 64G” (caprylic acid: capric acid = 60: 40), “scoule MC” (manufactured by Nisshin Oilio Group, Inc.) Caprylic acid: capric acid = 85: 15) “Score 8” (caprylic acid = 95% or more) is preferably used.

  In the grease spray according to the present invention, the content ratio (mass) of calcium stearate and liquid edible oil in the edible composition is in the range of 1: 1.1 to 1: 2.5. If the amount of calcium stearate added to the edible oil is too small, it is difficult to obtain a sufficient thickening effect as a grease. Conversely, if the amount added is too large, the edible composition becomes too hard and difficult to spray. There is a risk. By mixing the liquid edible oil with respect to calcium stearate within this range, a sufficient amount of calcium stearate is blended with the edible oil, and as a result, the hardness of the edible composition is kept within an appropriate range as grease. It is possible to obtain a grease spray that has good scattering when sprayed and is difficult to drip. In the grease spray according to the present invention, the content ratio (mass) of calcium stearate and liquid edible oil in the edible composition is in the range of 1: 1.2 to 1: 2.1. Preferably, it is in the range of 1: 1.25 to 1: 2.0.

  In the grease spray according to the present invention, the content ratio (mass) of ethanol and calcium sum of calcium stearate and liquid edible oil in the edible composition is in the range of 1: 0.2 to 1: 1. Ethanol is a diluent added to dilute grease consisting of edible oil and calcium stearate to a viscosity suitable for spraying. If the content of ethanol is too small relative to the total content of edible oil and calcium stearate, the viscosity of the edible composition may become too high and foaming may occur easily. Conversely, the content of ethanol is too high. In some cases, the viscosity becomes too low, and the liquid may easily drip. By mixing the content of ethanol with respect to the total content of edible oil and calcium stearate to be within the above range, the viscosity of the edible composition can be adjusted within an appropriate range, and foaming and dripping Both can be effectively suppressed. As a grease spray according to the present invention, the content ratio (mass) of the total content of edible oil, calcium stearate and ethanol in the edible composition is in the range of 1: 0.25 to 1: 0.8. It is preferable that it is in the range of 1: 0.27 to 1: 0.7.

  The edible composition in the grease spray according to the present invention may be composed of the edible oil, calcium stearate, and ethanol, and may contain other edible substances. In the grease spray according to the present invention, the ratio (mass ratio) of the total content of the edible oil, calcium stearate, and ethanol in the edible composition is preferably 80% or more, and 90% or more. More preferably, it is more preferably 95% or more.

  In the grease spray according to the present invention, examples of other edible substances that can be contained in the edible composition include substances generally blended with grease and spray agents. For example, fragrances specified as foods and food additives; antifoaming agents such as silicone oils; dyes; antioxidants such as BHT, tocopherols, carotenes, sesamols, γ-oryzanol; Examples include emulsifiers such as sugar fatty acid esters, sorbitan fatty acid esters, propylene glycol fatty acid esters, lecithin and polysorbate; thickening stabilizers; specific gravity adjusting agents; brighteners such as plant waxes and animal waxes.

  The grease spray according to the present invention comprises the edible composition and a gas. The gas is intended to inject grease from a filling container, and is preferably at least one selected from the group consisting of carbon dioxide gas, nitrogen gas, nitrous oxide gas, and LP gas. In addition, the content ratio (mass) of the edible composition and the gas is preferably in the range of 1: 1.2 to 1: 2.2, and is preferably 1: 1.4 to 1: 2.0. It is more preferable to be within the range. By setting the content ratio of the edible composition and the gas within the range, coagulation of the edible composition in the container is suppressed and foaming can be suppressed.

  In the grease spray according to the present invention, the edible composition is prepared by mixing the edible oil, calcium stearate, and ethanol (other edible substances as required). The grease spray according to the present invention does not require the calcium stearate to be in the form of fibers unlike the conventional grease containing only metal soap, so that all of these are performed at a temperature below the boiling point of ethanol and under an atmospheric pressure environment. An edible composition can be easily prepared only by mixing. The temperature at the time of preparation may be a temperature at which the edible oil and ethanol can be maintained in a liquid state, and is determined in consideration of a freezing point of the edible oil to be used. In addition, the edible oil and calcium stearate are mixed and uniformly dispersed at a temperature of 100 ° C. or lower in advance, and then cooled to less than the boiling point of ethanol (preferably 50 ° C. or lower) as necessary. An edible composition may be prepared by mixing the obtained dispersion and ethanol. Since it is preferable to disperse calcium stearate as much as possible in edible oil, it is preferable to stir with a disper, homomixer, stirrer, propeller, or the like.

  The grease spray according to the present invention prepares an edible composition in which the edible oil, calcium stearate, and ethanol (other edible substances as required) are mixed, and fills the spray container with gas. It is manufactured by doing. The spray container is preferably 1 liter or less. The pressure of the liquefied gas after filling is preferably 0.1 to 0.8 Mpa, more preferably 0.3 to 0.6 Mpa at 35 ° C. As a container for spraying, it is equipped with a container body that fills stock solution and gas, and a valve that injects the stock solution, and uses an aerosol can generally used for filling aerosol products, or a container modified as appropriate can do. The aerosol can valve has a large effect on the spraying condition, so consider the particle size and content of calcium stearate in the grease spray to be filled, especially the edible composition, the viscosity and hardness of the edible composition, etc. It is preferable to select. For example, in the grease spray according to the present invention, the calcium stearate has a maximum particle size of 500 μm or less and an average particle size of 1 to 50 μm, and the content ratio (mass of calcium stearate and liquid edible oil in the edible composition ) Is preferably in the range of 1: 1.1 to 1: 2.5, it is preferably filled into an aerosol can having a valve stem diameter in the range of 0.35 to 0.44 mm.

  EXAMPLES Hereinafter, although the Example and comparative example of this invention are shown and this invention is demonstrated in more detail, this invention is not limited to these.

[Example 1]
A grease spray containing calcium stearate (SteCa), medium chain fatty acid triglyceride (MCT), ethanol (EtOH), and LP gas (LPG) in the charging ratio (mass ratio) shown in Table 1 was produced. Calcium stearate is of food additive grade (maximum particle size: 100 μm or less, average particle size: 5 μm), MCT is “Skoray 64G” (Nisshin Oilio Group Co., Ltd.), and ethanol is fermented ethanol Was used.
Specifically, first, calcium stearate, MCT, and ethanol were mixed at 25 ° C. to prepare an edible composition. Next, 10 g of this edible composition was filled into a 100 mL aerosol can together with LP gas to produce a grease spray.

  Each of the produced grease sprays was sprayed on a flat plate placed horizontally on the floor and a flat plate placed vertically on the floor to evaluate foaming, dripping and splashing, and then comprehensive evaluation was performed. The evaluation criteria for foaming and dripping are shown below. The evaluation results are shown in Table 1.

(Evaluation criteria for foaming)
(Double-circle): There is little foaming and a bubble is easy to disappear.
○: Although there is some foaming, the foam tends to disappear.
(Triangle | delta): There is some foaming and a bubble is hard to disappear.
X: Foaming is remarkably difficult to disappear.

(Evaluation criteria for dripping)
A: No dripping.
○: Almost no liquid dripping.
Δ: Slightly dripping.
*: Dripping is remarkable.

  As a result, the grease spray of Formulation 1 in which the charging ratio of calcium stearate and medium chain fatty acid triglyceride was 1: 1 was severely foamed and dripping. Moreover, the grease spray of the formulation 4 which did not contain ethanol was good with no liquid dripping observed, but foaming was severe. In contrast, the grease sprays of Formulations 2, 3, 5, and 7-8 in which the charging ratio of calcium stearate and medium chain fatty acid triglyceride is 1: 1.25 to 1: 2 are almost both foaming and dripping. In particular, the grease sprays of Formulations 5 and 7 to 9 in which the ratio of the total content of MCT and calcium stearate to the content of ethanol is in the range of 1: 0.25 to 1: 0.35 are scattered. There were few and it was very preferable. On the other hand, the grease spray of Formulation 6 in which the content ratio (mass) of the edible composition composed of calcium stearate, medium chain fatty acid triglyceride, and ethanol and LP gas is 1: 1 is the edible composition and LP. Foaming was extremely worse than the grease spray of the formulation 5 whose content ratio (mass) with gas is 1: 2.

[Example 2]
In the charging ratio of the formulation 5 in Example 1, the diameter of the stem of the valve is 0.4 mm or 0.5 mm, and the diameter of the pilot hole of the valve stem (the hole opened to the filled gas below the stem) In a 100 mL aerosol can with 1.5 mm or 0.6 mm, no side hole in the valve stem (a side hole provided in the vicinity of the valve outlet), or 0.3 mm or 0.5 mm in diameter. Filled to produce a grease spray.

  Each manufactured grease spray is sprayed on a flat plate placed horizontally on the floor and a flat plate placed vertically on the floor to evaluate foaming, dripping, splashing, and mist generation, and then conducting a comprehensive evaluation. It was. The evaluation criteria for foaming and dripping are the same as in Example 1. Moreover, the evaluation criteria of scattering and mist generation are shown below. Further, the evaluation results are shown in Table 2.

(Evaluation criteria for scattering)
○: The propellant adheres to an appropriate range.
(Triangle | delta): The adhesion range of a projectile is somewhat wide, and there is some unevenness.
X: The adhesion range of a projectile is wide, and there exists unevenness.

(Evaluation criteria for mist generation)
○: Little mist is generated.
Δ: A little mist is generated.
X: Mist generation is remarkable.

  As a result, in the case of the grease spray of the formulation 5 of Example 1, it was found that a 0.4 mm aerosol can was more suitable than an aerosol can having a stem diameter of 0.5 mm.

[Example 3]
Three grease sprays were produced by changing the temperature conditions during production at the blending ratio of the formulation 5 of Example 1. Specifically, first, calcium stearate and MCT were mixed while being heated to 80 ° C., 100 ° C., or 120 ° C. and sufficiently stirred. Subsequently, after cooling this mixture to 25 degreeC, ethanol was added and fully stirred. Thereafter, the obtained edible composition was filled into a 100 mL aerosol can together with LP gas in the same manner as in Example 1.
As a result, the grease spray prepared by heating to 80 ° C. or 100 ° C. could be produced without any problem as in Example 1, but the calcium stearate was heated to 120 ° C. near the melting point of calcium stearate. In the grease spray manufactured by adding ethanol to the MCT and then adding ethanol, the calcium stearate does not disperse in the mixed solvent of MCT and ethanol when mixed with ethanol. A homogeneous spray could not be achieved. In addition, the sprayed product was not a smooth grease.

Claims (3)

It consists of a composition and gas consisting only of edible ingredients containing calcium stearate, liquid edible oil, and ethanol,
The gas contains one or more selected from the group consisting of carbon dioxide, nitrogen gas, nitrous oxide gas, and LP gas, and the content ratio (mass) of the composition consisting of only the edible raw material and the gas. Is in the range of 1: 1.2 to 1: 2.2 ,
The content ratio (mass) of calcium stearate and liquid edible oil is in the range of 1: 1.1 to 1: 2.5, and the content ratio of the sum of calcium stearate and liquid edible oil to ethanol ( A grease spray for food machinery, characterized in that the mass) is in the range of 1: 0.2 to 1: 1. The grease spray for food machinery according to claim 1 , wherein the liquid edible oil is a medium-chain fatty acid triglyceride. The content ratio (mass) of calcium stearate, liquid edible oil, and ethanol is within the range of 1: 1.1 to 1: 2.5, and calcium stearate and liquid After mixing the composition consisting only of edible raw materials so that the content ratio (mass) of the sum of edible oil and ethanol is within the range of 1: 0.2 to 1: 1 at 50 ° C. or lower. Filling the container with gas ,
The gas contains one or more selected from the group consisting of carbon dioxide, nitrogen gas, nitrous oxide gas, and LP gas, and the content ratio (mass) of the composition consisting of only the edible raw material and the gas. There 1: 1.2 to 1: characterized in der Rukoto the range of 2.2, the manufacturing method of food grade grease spray.