JPH10211110A - Antibacterial wooden cutting board and manufacture therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the degradation of an antibacterial effect by use and time and to perform use for a long time at ease by injecting an antibacterial chemical solution and impregnating a wooden cutting board with it under a reduced pressure environment, performing an antibacterial processing to a deep layer part provided with a conduit and performing polishing finish after drying. SOLUTION: A cutting board P or a raw material board is arranged on a shelf 6 inside a pressure reduction tank 1. A vacuum pump 2 is operated and the inside of the pressure reduction tank 1 is placed under a prescribed reduced pressure vacuum degree. Thus, the cutting board P or the raw material board is dehydrated not only on a surface layer part but also to the deep layer part provided with the conduit. Then, the antibacterial chemical solution is filled inside the pressure reduction tank 1. Then, the vacuum pump 2 is stopped after prescribed reduced pressure holding time and it is placed under a normal pressure. Thus, the antibacterial chemical solution infiltrates not only into the surface layer part but also into the deep layer part including the conduit of the cutting board P or the raw material board. Finally, the cutting board P or the raw material board is taken out from the inside of the pressure reduction tank 1, polishing is performed after drying in the case of the cutting board P and cutting board work is performed after drying in the case of the raw material board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting board which is kitchen utensil, and more particularly to a wooden antibacterial cutting board.

[0002]

2. Description of the Related Art A plastic cutting board is generally used as an antibacterial cutting board. However, they have not seen the spread of traditional wooden cutting boards. The fact that it is wooden has a subtle effect on the taste of the dish.

[0003] Therefore, a cutting board made of wood and subjected to antibacterial treatment has been proposed (JP-A-7-67798, JP-A-5-64).
616, JP-A-4-129515). However, all of these methods apply and impregnate an antibacterial agent to the wooden surface layer (no penetration into the conduit), and it is difficult to maintain the antibacterial action.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a wooden cutting board in which a deep portion including a conduit is subjected to antibacterial treatment.

[0005]

In order to achieve the above object, the present invention provides an antibacterial treatment to a deep part including a conduit by injecting and impregnating a wooden cutting board or a raw board thereof with an antibacterial agent solution under a reduced pressure environment. In the case of a wooden chopping board, it is dried and polished as it is, and in the case of a raw board, it is a method for producing an antibacterial wooden chopping board obtained by drying and then processing a chopping board, and an antibacterial wooden chopping board obtained by the manufacturing method.

The antimicrobial solution has an antimicrobial zeolite concentration of 0.018% to 0.03% and an ethanol concentration of 1.8.
% Of an antibacterial wooden chopping board which is an aqueous solution of about 10% and an antibacterial wooden chopping board obtained by the manufacturing method.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an example of an apparatus for carrying out the manufacturing method of the present invention is shown in FIG. Referring to FIG. 1, reference numeral 1 denotes a vacuum tank connected to a vacuum pump 2, a condenser 3 and an intake pipe 5 via an opening / closing valve 4, and a shelf 6 on which a cutting board P is placed is provided inside. Reference numeral 7 denotes an antibacterial solution tank having a supply port 7a disposed above the decompression tank 1 and connected to the decompression tank 1 by an injection pipe 9 through an opening / closing valve 8,
The decompression tank 1 and this antibacterial solution tank 7 are connected by a recovery pipe 12 via an opening / closing valve 10 and a recovery pump 11.

Next, the operation procedure of this example of the apparatus will be described. (A) The cutting board P or the raw material board is arranged on the shelf 6 in the pressure reducing tank 1. (B) The opening and closing valve 4 is opened, the vacuum pump 2 is operated, and the inside of the vacuum tank 1 is placed under a predetermined vacuum degree (torr). Thereby, the cutting board P or the raw material board is dehydrated not only to the surface layer but also to the deep layer including the conduit.

(C) Next, the opening / closing valve 8 for injecting the chemical solution
To fill the vacuum tank 1 with the antimicrobial solution. Then, after the elapse of a predetermined reduced pressure holding time (10 minutes to 15 minutes), the vacuum pump 2 is stopped and placed under normal pressure (20 minutes to 30 minutes).
Thereby, the antimicrobial solution permeates not only to the surface layer of the cutting board P or the raw material board but also to the deep layer including the conduit.

(D) Next, the collection pump 11 is operated to open the on-off valve 10 of the collection pipe 12. As a result, the entire antibacterial drug solution in the decompression tank 1 is returned to the drug solution tank 7. The consumed drug solution is replenished through the replenishing port 7a.

(E) Finally, the cutting board P or the raw material plate is taken out from the decompression tank 1, and the cutting board P is dried and polished, and the raw material plate is dried and then processed into a cutting board.
Obtain a cutting board for each product.

[0012]

[Experimental example] The following experiment was conducted using the above-mentioned apparatus example. (Experiment 1) Wooden cutting board Antimicrobial solution Note) Liquid temperature 12 ° C Antimicrobial zeolite concentration: 0.018% Ethanol concentration: 1.8% Decompression vacuum degree: 30 torr Decompression holding time: 10 minutes Normal pressure holding time: 20 minutes (Experiment 2) Antibacterial agent solution for raw material plate Note) Liquid temperature 12 ° C Antibacterial zeolite concentration: 0.018% Ethanol concentration: 1.8% Decompression vacuum degree: 30 torr Decompression holding time: 20 minutes Normal pressure holding time: 30 minutes

When the antibacterial effect test was performed on the above Experiments 1 and 2, the following results were obtained. Test method 1. Escherichia coli IFO 3972 Preparation of test bacterial solution The test bacteria are transplanted to a normal agar medium and cultured at 35 ° C for 24 hours, and then 1 colony is inoculated into a normal broth and cultured with shaking at 35 ° C for 18 hours. This bacterial solution was repeatedly diluted 10-fold with a phosphate buffer, and at the final dilution step, a test bacterial solution was prepared using 1 / 500-concentration ordinary broth. 3. Culture test Bacterial solution 2 prepared from the test product (50 mm x 50 mm x 30 mm) in 2 above
After immersing in 0 ml and storing at 35 ° C. for 24 hours, the number of bacteria was measured. In addition, as a blank test, 20 ml of bacterial solution was used.
Was similarly tested. Test result Initial number of bacteria: 310,000 / ml Number of bacteria after 24 hours (/ ml) Experiment 1 0 Experiment 2 0 Blank test 15,000,000 Tokyo Food Sanitation Association Tokyo Food and Food Technology Research Institute

[0014]

As described above, the present invention is a wooden cutting board which retains an antibacterial effect, and the antibacterial treatment reaches not only the surface layer but also the deep part including the dehydrated conduit by vacuum impregnation. As a result, there is no deterioration in the antibacterial effect due to use and aging, and a cutting board that can be used for a long period of time with peace of mind is provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a wooden cutting board according to the present invention.

FIG. 2 is a partially longitudinal side view of the same.

FIG. 3 is a schematic diagram of an example of an apparatus for carrying out the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decompression tank 2 Vacuum pump 3 Condenser 4 Opening / closing valve 5 Intake pipe 6 Shelf 7 Antibacterial solution tank 7a Supply port 8 Opening / closing valve 9 Injection pipe 10 Opening / closing valve 11 Collection pump 12 Collection pipe

Claims (6)

[Claims] 1. A method for producing an antibacterial wooden cutting board obtained by injecting and impregnating a wooden cutting board with an antibacterial agent solution under a reduced pressure environment to perform an antibacterial treatment up to a deep portion including a conduit, drying and polishing. 2. An antibacterial wooden cutting board obtained by impregnating a deep portion of a wooden cutting board including a conduit with an antibacterial solution under reduced pressure. 3. A method for producing an antibacterial cutting board obtained by injecting and impregnating a raw board of a wooden cutting board with an antibacterial agent solution under a reduced-pressure environment to an antibacterial treatment up to a deep part including a conduit, drying and processing the cutting board. 4. An antibacterial wooden cutting board obtained by impregnating a deep part including a conduit of a raw board of a wooden cutting board with an antimicrobial solution under reduced pressure. 5. The antibacterial agent solution has an antibacterial zeolite concentration of 0.
The method for producing an antibacterial wooden cutting board according to claim 1 or 3, which is an aqueous solution having a concentration of 018% to 0.03% and an ethanol concentration of about 1.8%. 6. The antimicrobial agent solution has an antimicrobial zeolite concentration of 0.
The antibacterial wooden cutting board according to claim 2 or 4, which is an aqueous solution having a concentration of about 018% to 0.03% and an ethanol concentration of about 1.8%.