JP2938413B2 - Production method of leather feed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a leather feed which is suitable for pets, especially dogs, and which is also effective in preventing dental caries.

[0002]

2. Description of the Related Art As a feed for dogs bred at home, there is known a picker made from cowskin floor leather. The picker is subjected to a chemical treatment such as rehydration, washing, depilation, degreasing and decalcification of the raw hide of cowhide, slicing to separate the floor leather, further washing the floor leather with water, squeezing and drying, and then Cutting into a rectangle and twisting it to form a rod, knitting a braid with multiple slits in a ribbon shape, or bundling multiple slits in a ribbon shape and joining both ends to form a rod shape Manufactured.

However, conventional feed pickers are:
Since the cowhide floor leather was processed directly into a rod shape or a string shape, it was hard, had poor moldability and workability, was difficult to chew, had no taste, and was difficult to become a feed. Therefore,
Attempts were made to impregnate the above-mentioned floor leather with meat juice or vegetable juice, but in this case, the solid content of the meat juice or vegetable juice adhered only to the surface of the floor leather, it was easily rotted, the color development was bad and the appearance was messy And so on.

[0004]

The present invention uses the above-mentioned floor leather as a raw material, impregnates it with a plasticizer to impart flexibility and sweetness, is easy to mold, is not rotten, and can be stored for a long time. Particularly, the present invention provides a method for producing a leather feed which is suitable for dogs and effective for preventing tooth decay.

[0005]

According to the method for producing a leather feed of the present invention, a floor leather obtained by subjecting a raw leather to a chemical treatment such as rehydration, washing, depilation, degreasing and demineralization and slicing is used.
After further washing and dehydration, sorbitol or xylitol
Is immersed in an aqueous plasticizer solution used as a plasticizer, and the plasticizer is impregnated with the plasticizer in the above-mentioned floor leather at a solid content impregnation amount of 1 to the weight of the dry floor leather.
It is characterized by being impregnated so as to be 0 to 50% and dried.

[0006] The above-mentioned raw hide may be any of cow, horse, pig and the like, but beef hide is particularly preferred in that it is easily available. This raw hide is subjected to chemical treatments such as water rehydration, washing, depilation, degreasing and demineralization in accordance with a conventional method, and then sliced with a band knife or the like to separate it into genuine leather on the grain side and floor leather with a coarse structure. Is done. The obtained floor leather is washed with water, dehydrated, impregnated with a plasticizer having a sweet taste, and dried.

[0007] Examples of the plasticizer, sorbitol and <br/> xylitol Le is Ru is used. The above-mentioned sorbitol and xylitol are preferred because they have high permeability and low water activity value, and xylitol has a sweetness comparable to sucrose,
Moreover, it is particularly preferable because it is not attacked by bacteria in the oral cavity, does not generate acid, and does not cause dental caries.

[0008] These plasticizers are used in the form of an aqueous solution, and the above-mentioned floor leather after washing and dehydration is immersed in the aqueous solution of the plasticizer. It is set at 10 to 50% by weight . If the solid content impregnated amount is less than 10%, the hardness of the floor leather is insufficiently reduced and the sweetness is insufficient, while if it exceeds 50%, impregnation becomes extremely difficult and uneconomical. Therefore, the moisture content of the floor leather at the time of immersion, the plasticizer concentration in the aqueous solution, the immersion temperature and the immersion time are as follows.
The value is set to be about 0%. For example, the moisture content of the floor leather is preferably 40 to 50%, the plasticizer concentration (weight of the plasticizer per 100 parts by weight of water) is 200 to 300%, the immersion temperature is 18 to 30 ° C, and the immersion time is 10%. -30 minutes are preferred. In addition, an edible colorant can be added to the above-mentioned aqueous plasticizer solution so as to be colored to a desired color such as red, light blue, chocolate, or the like.

[0009] The floor leather impregnated with the above-mentioned plasticizer and dried is increased in flexibility by applying vibration as required, and then cut into a rectangular shape and twisted into a rod shape as in the prior art.
Used as a feed picker. In addition, the floor leather is cut into a ribbon of a predetermined length, and several pieces are aligned and twisted,
The two ends are tied to a feed picker. In addition, the plurality of ribbons are tied together and provided to a feed picker.
In this case, since the floor leather is impregnated with the above-mentioned plasticizer, it has sweetness and swells and becomes flexible, so that it matches the taste of the dog, and the dog chews and eats happily. that time,
Since the floor leather contains a large amount of collagen fibers, dog teeth are cleaned and plaque is removed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A plasticizer aqueous solution is prepared by dissolving 200 to 300 parts by weight of xylitol or sorbite as a plasticizer in 100 parts by weight of water. On the other hand, the raw hide of cowhide is subjected to a chemical treatment such as rehydration, washing, depilation, degreasing and decalcification in accordance with a conventional method, and the floor leather obtained by slicing is further washed with water, dehydrated, and dried with a water content of 40 to 50%. After squeezing to the extent, immersion and stirring in the plasticizer aqueous solution at a temperature of 18 to 30 ° C.
After 0 to 30 minutes, pull up and dry, apply vibration,
A floor leather containing 10 to 50 parts by weight of xylitol or sorbitol at a solids content per 00 parts by weight, ie a leather feed, is obtained. Then, after the leather feed is cut into a desired size, the leather feed is twisted or assembled and processed into a rod shape to be used as a feed picker.

[0011]

【Example】

Example 1 Salted raw skin of beef skin was put in a basket drum of a washing tank,
Rotate the drum 3 by immersing it in 200% of the
0 minutes, 30 minutes of stillness, 30 minutes of rotation, 30 minutes of stillness, and 30 minutes of rotation were alternately performed to return water, followed by washing for 30 minutes. Then, in the same manner as described above, 200% of active agent (premazol soak), 0.2% of degreasing agent, 0.4% of soda agent and 0.1% of water (27 ° C.) Preservative, and alternately rotate twice for 30 minutes and stationary for 60 minutes, and continue rotating for another 20 hours (1
After standing still for 5 minutes every hour), the plate was washed with water for 30 minutes after continuous rotation for another 2 hours, and then the spine was split.

After splitting, 300% water (27 ° C.)
0.2% of degreasing agent, accelerator (premazol lime) 0.
4%, 0.9% sodium hydrosulfide and 0.3% lime were added and rotated for 30 minutes.
After adding 30% of rotation, 30 minutes of rest, 30 minutes of rotation, 60 minutes of rest, 10 minutes of rotation, and 50 minutes of rest with addition of lime 4%, the rotation was continued for 3 hours (however, 3 hours each hour). Minutes). Next, 1/3 of the water was replaced with fresh water, 1% of lime was added, and the mixture was rotated for 10 minutes and stopped for 50 minutes, then stopped for 20 hours (however, rotated for 3 minutes every 2 hours), and degreased. Hair roots were dissolved.

After the above-described degreasing treatment, after washing with water for 5 minutes, the cowhide is taken out, sliced with a band knife to separate the floor leather, and the floor leather is further washed with water for 30 minutes, and then washed with water for 100 minutes.
0.3% lactic acid, 0.8% ammonium sulfate in 30% water (30 ° C)
After adding 0.7% of salt and 0.3% of degreasing agent and rotating for 20 minutes, 0.5% of enzyme (Oropon) for promoting decalcification was added.
After addition, the mixture was rotated for 60 minutes to demineralize, washed with water and dehydrated.

Conventionally, the floor leather after the demineralization treatment was immediately dried, cut into a desired shape and formed, but in this embodiment, the moisture content after the demineralization treatment is about 60 to 70%. After further squeezing the floor leather to reduce the moisture content to about 40-50%,
It was immersed in an aqueous solution of xylitol. This aqueous solution is water 1
It was prepared by dissolving 300 parts by weight of xylitol per 100 parts by weight. After immersing the above floor leather in an aqueous solution of xylitol at a temperature of 27 ° C. for 25 minutes, lift it up, hang it on a horizontally supported rod in advance, dry it, and dry the leather feed with 30% solid content impregnation of xylitol. Obtained.

[0015] The above-mentioned sheet-shaped leather feed is 5 mm wide and 4 mm long.
The pieces were cut into 00 mm ribbons, and the six braided braids were used as dog pickers. Further, it was cut into a rectangle having a width of 40 mm and a length of 150 mm, and this was twisted as it was to form a twisted candy, which was used as a dog picker. All of them were softened by the impregnation of the plasticizer, the workability and the moldability were improved, the work became easier, and when given to a dog, the time required for flattening was less than 5 minutes.

Example 2 A leather feed of Example 2 was obtained in the same manner as in Example 1 except that sorbitol was used instead of xylitol of Example 1. This was molded in the same manner as in Example 1.
Workability was improved in the same manner as in the above, and it was well received by dogs.

[0017]

As described above, according to the present invention, the floor leather is softer and easier to bite than conventional ones, and has good workability and moldability when molded into a dog picker, and is sweet. It is possible to produce a leather feed that tastes, does not rot, can be stored for a long time, is particularly suitable for dog pickers, and is also effective in removing plaque. In particular, when xylitol or sorbit is used as a plasticizer, the permeability and preservability are improved, and when xylitol is further selected, the sweetness is further improved, and it is more effective in preventing caries because it does not generate acid. .

Claims (1)

(57) [Claims] 1. The raw leather is subjected to a chemical treatment such as rehydration, washing, depilation, degreasing and demineralization, and the floor leather obtained by slicing is further washed and dehydrated, and then sorbit or xylitol.
Immersed in a plasticizer aqueous solution using a plasticizer
A plasticizer, solid impregnation amount to split leather weight on a dry
A method for producing a leather feed, wherein the feed is impregnated to a concentration of 10 to 50% and dried.