JPH08281224A - Treatment for removing fat and protein - Google Patents

Abstract

PURPOSE: To provide a practicable method for efficiently removing the contaminants which consist mainly of fat and/or protein and stick to various kinds of equipment, such as floor surfaces, conveyors, dressing work tables, chopping boards, dressed carcass refrigerators, pipes and drainage lines, in meat handling plants, such as livestock slaughters with min, labor, time and cost. CONSTITUTION: The following stage B and stage C are executed by using the strongly alkaline water out of the strongly acidic and strongly alkaline water formed by an ionized water forming device. The stage B is a stage to wet the surfaces of the objects stuck with the contaminants mainly consisting of the fat and/or protein and to make the contaminants easily peelable by spraying the strongly alkaline water to these objects under a temp. condition of the room temp. or a slightly higher temp. therefrom. The stage C is a stage for providing an interval of 0.5 to 5 minutes after the end of the previous stage, then washing away the contaminates floating on the object surfaces with water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention mainly relates to fats and / or fats attached to various facilities (floor, conveyor, demolition worktable, mana plate, carcass cooler, pipe, drainage channel, etc.) in meat handling sites such as slaughterhouses. Alternatively, the present invention relates to a method for efficiently removing protein contaminants with minimum labor, time and cost.

[0002]

2. Description of the Related Art In the processing of livestock for beef, such as beef and pigs, at about 30 slaughterhouse corporations nationwide, after slaughtering, exsanguination, peeling, and removal of the internal organs, head and extremities, The carcass (also called half circle) is divided into two parts on the left and right along the midline.

Therefore, a large amount of contaminants mainly composed of fat and / or protein adheres to various equipments such as floors, conveyors, dismantling worktables, mana plates, carcass coolers, pipes, drainage channels in slaughterhouses. Tend to be. Contamination adheres to various causes such as deterioration of sanitary environment due to microbial propagation, deterioration of working environment and living environment in the vicinity due to generation of odor, accident of worker due to slippage, clogging of drain pipe, etc. Become.

Therefore, it is necessary to clean the above facilities at least once a day. Conventionally, for fat, a method of sprinkling hot water of 60 to 80 ° C. to melt the fat, or 40 ° C. As a universal cleaning method, a method of strongly brushing and washing away using a certain amount of warm water, and a method of brushing while using a chemical detergent have been adopted for proteins.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The method of spraying hot water at 80 ° C to dissolve fat, or brushing strongly while using warm water at about 40 ° C requires heat energy, gives a considerable physical burden to the worker, and drains the washed water. The fat contained in is re-solidified inside the drainage pipe of the wastewater treatment line, often causing pipe clogging, which causes troubles.

[0006] The method of deproteinizing by brushing while using a chemical detergent does not remove the dirt, so that it imposes a considerable physical burden on the operator and is secondary to the amount of detergent and water used. May cause serious environmental pollution.

[0007] Physical and organic contamination of various facilities of slaughterhouses is usually a mixture of fat and protein (blood coagulation etc.), so the above-mentioned method is required to remove dirt. Both fat-free and protein-free measures must be taken, and the burden is unbearable in terms of labor, labor costs, materials and energy costs.

Under such a background, the present invention mainly attaches fat to various facilities such as floors, conveyors, demolition worktables, mana plates, carcass coolers, pipes, drainage channels in meat handling sites such as slaughterhouses. It is an object of the present invention to provide a practical method for efficiently removing contaminants composed of proteins and / or proteins with minimum labor, time and cost.

[0009]

The method for treating fat-free and deproteinized protein of the present invention uses strong alkaline water out of strong acidic water and strong alkaline water produced by an ionized water producing device, and mainly uses fat and / or protein. After the completion of Step B and Step B, the surface of the target object is wetted and easily peeled off by spraying the strongly alkaline water toward the target object to which the following contaminants are attached at room temperature or slightly higher temperature conditions. , The step of washing out the contaminants floating on the surface of the object with water after the interval of 0.5 to 5 minutes has been opened.

The present invention will be described in detail below.

As described above, livestock such as beef and pigs for livestock meat is slaughtered, exsanguinated, skinned, and after removing the internal organs, head, and limbs, it is divided into two parts on the left and right along the midline. It is divided into carcasses (also called half circles). At the final finishing stage of the slaughter processing line, the carcasses are thoroughly suspended and washed with water.

In order to clean various facilities such as a floor, a conveyor, a demolition work table, a mana plate, a carcass cooler, a pipe, and a drainage canal in a slaughterhouse, in the present invention, it is generated by an ion water generator. Strong acidic water and strong alkaline water,
Especially, strong alkaline water is used.

The ionized water generator is a device for converting the introduced water into strongly acidic water and strongly alkaline water. As water, tap water that has passed through a filter is usually used. When a small amount of electrolyte (usually sodium chloride, potassium chloride, sodium hypochlorite, etc.) is added to this water and electrolyzed, the water generated on the anode side becomes strongly acidic water and the water generated on the cathode side becomes strong. It becomes alkaline water. The pH of the strongly acidic water obtained is, for example, 2.7 or less, especially about 2.3 to 2.7. The pH of the obtained strong alkaline water is, for example, 10.8 or higher. A method in which no electrolyte is added and a method in which an ion exchange membrane is used in combination are also possible. Ionized water generators are currently on the market from various companies, but due to differences in performance, care should be taken to select the optimum device.

In the present invention, step B and step C are carried out as described in detail below. If necessary, the process A is performed prior to the process B. If necessary, after step B and step C, step B and step C are further repeated. If necessary, step D is carried out after step C is completed.

<Step B> In step B, the strongly alkaline water is sprayed toward an object to which contaminants mainly consisting of fat and / or protein are attached at room temperature or slightly higher temperature. This is a step of wetting the surface of the object so that it can be easily peeled off.

As the object, various facilities at the meat handling site as described above, for example, a floor surface at a slaughterhouse,
Examples thereof include a conveyor, a mana plate, a carcass cooler, a pipe, a drainage channel, and the like, and any object may be used as long as it is a contaminant mainly composed of fat and / or protein.

The temperature of the strong alkaline water is usually room temperature, but it is slightly higher than room temperature (up to about 40 ° C.).
The temperature may be such a level that thermal energy is not so heavy and fat is not melted. That is, the present invention does not assume that fat is heated to a certain degree or more and melted unlike the conventional method.

The strongly alkaline water is sprayed on the object. Spraying is advantageous because it minimizes the use of strongly alkaline water as a means of wetting the surface of the object. Application of an excessive amount of strongly alkaline water has no merit as it only drains away. The amount of the strongly alkaline water sprayed in this step B is usually 100 to 700 ml, preferably 150 to 600 ml, more preferably 200 to 500 ml per 1 m ^{2 of the} object surface.
Is.

The spraying pressure of the strong alkaline water is sufficient to wet the object thoroughly, so that it may be a low pressure.

<Step C> Step C is a step in which after the above step B is completed, an interval of 0.5 to 5 minutes is opened, and then the contaminants floating on the surface of the object are washed away with water.

The interval is 0.5 to 5 minutes, preferably 1
It needs to be provided for ~ 4.5 minutes, during which the contaminants will float up on the object. If the interval is less than 0.5 minutes, it is too short, and if it exceeds 5 minutes, the strong alkaline water tends to deteriorate, and the cleaning effect decreases.

The temperature of water in step C may be room temperature or a temperature slightly higher than room temperature (up to about 40 ° C.). When washing off with water, brushing or wiping with a wiper can be used together, if necessary. However, simple operations are sufficient for these auxiliary means.

<Step A> When a large amount of contaminants is adhered to the surface of the object such as the floor surface, a part of the contaminants is removed in advance by physical means such as scraping, brushing, and jetting of pressurized water. Step A can be carried out, followed by step B and step C above. This repetition is usually sufficient once, but may be repeated twice or more.

<Repetition of Steps B and C> After Step C is completed,
After draining water, step B and step C can be repeated again. Draining can reduce the amount of strong alkaline water used in the step B again.

<Step D> After step C, it is desirable to carry out step D of spraying strongly acidic water onto the object. Thereby, the surface after washing can be effectively sterilized. Since strong alkaline water naturally becomes ordinary water when left standing, it is not always necessary to provide this step D.

According to the ionized water generator, strong acidic water is obtained at the same time as strong alkaline water, so that strong acidic water in step D may be used. The strongly acidic water is mainly used for sterilization by spraying fine droplets on products such as carcasses at meat handling sites such as slaughterhouses. This is because carcasses wet with strong acidic water are instantaneously sterilized. Then, the strongly acidic water returns to normal water immediately after coming into contact with organic matter, so that it does not adversely affect the wastewater treatment process such as activated sludge treatment.

<Summary of Process Sequence> After all, the basic process sequence in the present invention is process B → process C. When an optional process provided as necessary is indicated by [], the process sequence including the optional process is [process A →] process B → process C → [process B → process C →].
[Process D] is performed. (See Fig. 1)

[0028]

The method of the present invention, in which the strongly alkaline water is sprayed onto the object to which the contaminant is attached, the interval of 0.5 to 5 minutes is opened, and then the contaminant floating on the object is washed off with water. By carrying out, it is possible to easily remove the contaminants regardless of whether the contaminants are fats, proteins or both.

That is, according to the present invention, contamination mainly consisting of fat and / or protein attached to various facilities such as floors, conveyors, mana plates, carcass coolers, pipes, drainage channels in meat handling sites such as slaughterhouses. Things, minimal effort,
It can be removed efficiently in time and cost.

[0030]

EXAMPLES The present invention will be further described with reference to examples. The following experiments were conducted under the supervision of Mr. Hiroyuki Miura, a professor at Obihiro University of Agriculture and Veterinary Medicine.

Example 1 FIG. 1 is a flow chart showing an example of the method for processing fat-free and deproteinization of the present invention. In the first embodiment, the process A → process B → process D is performed.

<Treatment Method> The tap water that has passed through the filter is supplied to the ion water generator. As the ion water generator, a commercially available ion water generator “Aquarifine” manufactured by ARV Co., Ltd. was used. The introduced water has a pH of 11.80,
Redox potential -849 mV, strong alkaline water at a temperature of 14 ° C, pH 2.44, redox potential +1147 mV, temperature 1
It was converted to strongly acidic water at 4 ° C.

The generated strong alkaline water was stored in a storage tank made of an alkali resistant material such as polyvinyl chloride, and the generated strong acidic water was stored in a corrosion resistant storage tank such as polyethylene.

The strong alkaline water and the strong acidic water are respectively sent to the sprayer and sprayed from the nozzle. Regarding the materials of the pipes and nozzles, those made of plastics were used for the line of strong alkaline water, and those made of titanium alloy were used for the line of strongly acidic water.

[35] Mana plate used by Tokachi stock raising public corporation in Hokkaido,
Cleaning of contaminants consisting of fats and proteins (blood coagulation, etc.) adhering to the floor of the steel conveyor and the carcass cold storage was carried out according to the conventional method and the method of the present invention.

That is, the target surface on which fat and protein are adhered is divided into a certain standard area (1 m × 0.5 m), and the contaminants are cleaned by the conventional method and the method of the present invention, and the both are compared. It was Sampling is performed by wiping off the standard area with 5 cm x 5 cm sterile gauze.
What was eluted in 00 ml of sterilized water was used as a sample. As described above, the wiping was performed on the three surfaces of the mana plate, the steel conveyor, and the floor surface.

<Conventional Method> The target surface having the above standard area was washed with hot water at a temperature of 70 ° C. in the same manner as usual, and then sampled.

<Method of the Invention> About 160 ml of the above strongly alkaline water was sprayed onto the floor surface having the above-mentioned standard area, and a 1 minute interval was set. As a result, contaminants floated up on the target surface, so they were brushed with a scrubbing brush commonly used by the public corporation and then rinsed with running water. After leaving for 1 minute to confirm drainage, about 40 ml of the above strongly acidic water was sprayed, and then sampling was performed.

<Analysis item> -Remaining amount of protein The sample was hydrolyzed with sulfuric acid and titrated according to the Kjeldahl method.・ Remaining lipids Soxhlet method extracts lipids into ether for separation,
It was quantified.・ Number of bacteria Divided the sampled parts into 10 to 1000 times diluted sections, plated E. coli and general viable bacteria in each section, and set the average value of those within the effective range (30 to 300) as the official number .

<Results> The results are shown in Table 1. From Table 1, it can be seen that the method of the present invention can achieve more reliable cleaning treatment than the conventional method.

[0041]

[Table 1]

Example 2 Cleaning of contaminants consisting of fats and proteins (blood coagulates, etc.) adhering to the floor of a carcass cold storage box of the Tokachi stock raising public corporation in Hokkaido was carried out by the conventional method and the method of the present invention, Both were compared.

<Conventional method> The floor surface of the cool box having a total area of 36 m ² is divided into two parts, and one half (18 m ² ) of the floor surface is washed with a chemical detergent according to the conventional method and washed with polisher brushing to 40 to 42. The work was washed out with warm water at ℃.

<Method of the Present Invention> First, in the same manner as in Example 1, strong ionized water having a pH of 11.80, an oxidation-reduction potential of -849 mV, and a temperature of 14 ° C. and a pH of 2.
44, strong acidic water having a redox potential of 1147 mV and a temperature of 14 ° C. was produced.

On the other half surface (18 m ² ) of the above-mentioned strong alkaline water of pH 11.80 produced above, 32 per 1 m ²
It was sprayed to 0 ml (using slightly less than 6 liters of strong alkaline water), and a 3-minute interval was set. As a result, contaminants floated up on the floor surface, so after brushing with a polisher as well, rinse with room temperature water,
After leaving it for 1 minute to drain water, 80 ml of the above strongly acidic water of pH 2.44 was sprayed per 1 m ² (a total of a little less than 1.5 liters of strongly acidic water was used) for sterilization.

<Results> According to the method of the present invention, although the same person worked, the fat was 2 to 5 times that of the conventional method and the protein was 5 to 5 times that of the conventional method. 1
It was confirmed from the number of bacteria and the amount of residual fat and protein that the cleaning effect was 0 times. In addition, in the comparative example, despite the above operation, the removal of fat was not yet sufficient. For complete fat removal, add an additional 60-8
It is necessary to spray hot water at 0 ° C to dissolve fat. Further, in the comparative example, the fat contained in the rinsed wastewater was inevitably redeposited on the drain pipe.

[0047]

As described in the section of the operation, according to the present invention, a floor surface, a conveyor, a meat handling place such as a slaughterhouse,
Contaminants mainly consisting of fat and / or protein adhering to various facilities such as a mana plate, a carcass cooler, a pipe and a drainage can be efficiently removed with a minimum of labor, time and cost.

[Brief description of drawings]

FIG. 1 is a flow chart showing an example of a method for treating fat-free protein according to the present invention.

Claims (6)

[Claims] 1. A strong alkaline water of strong acidic water and strong alkaline water generated by an ionized water generator is used, and the strong alkaline water is applied to an object to which a contaminant mainly consisting of fat and / or protein is attached. By spraying alkaline water at room temperature or slightly higher temperature,
Step B, which wets the surface of the object to make it easy to peel off, and step C after the step B is completed, after which an interval of 0.5 to 5 minutes is opened, and the contaminant floating on the surface of the object is washed away with water. A method for treating fat-free proteins. 2. When the adhered amount of the contaminant on the surface of the object is large, a step A of removing a part of the contaminant by physical means such as scraping, brushing, jetting of pressurized water is carried out in advance, and then, The lean protein deproteinizing method according to claim 1, wherein the steps B and C are performed. 3. The lean protein deproteinizing method according to claim 1 or 2, wherein after the completion of step C, the water is drained and steps B and C are repeated again. 4. The method for treating lean protein deproteinization according to claim 1, 2 or 3, wherein after step C, step D of spraying strongly acidic water on the object is carried out. 5. The method according to claim 1, wherein the amount of the strongly alkaline water sprayed in step B is 100 to 700 ml per m ² . 6. The method for treating fat-free and deproteinization according to claim 1, wherein the object is various facilities at a meat handling site.