DE1159748B - Process for the production of artificial sausage casings by shredding collagen-containing animal material - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY
GERMAN / M * m> PATENT OFFICE

kl. 53 c 3/02

INTERNAT. KL. A 23 1

EXPLAINING EDITORIAL 1159 748

N19776 IVa / 53 c

REGISTRATION DATE: MARCH 22, 1961

NOTICE THE REGISTRATION AND ISSUE OF EDITORIAL: DECEMBER 19, 1963

The production of artificial sausage casings from suitable animal material, preferably animal skin, is known. The general procedure here is that collagen-containing starting material, ζ. B. pieces of skin, converted into a swollen fiber mass and this mass is given the desired tubular shape through ring nozzles. In general, the procedure is such that pieces of skin of a suitable size are converted into a swollen state by treatment with swelling chemicals, the pieces of skin are comminuted and fiberized in this state and the fiber mass thus obtained is further processed as described above. The swelling treatment of the pieces of skin can e.g. B. be carried out in such a way that they are initially swelled by alkaline, e.g. Brought, by insertion into milk of lime, to a PJJ value of about 13, wash the _pH value is lowered to about 8 and then an acid treatment is preferably carried out with dilute hydrochloric acid, by which a p _H -value is set from about 2.5 to 4.0. The fiberization of the highly swollen pieces of skin obtained in this way can, for. B. take place in such a way that they are first crushed on corrugated rollers and the material thus obtained is expediently pressed several times through perforated screens, the holes of which have a diameter of z. B. 1.5 and 1.0 mm. The swollen fiber material obtained in this way is now reduced to a dry matter content suitable for further processing on sausage casings, e.g. B. from about 8 to 11%, and these masses are pressed through annular nozzles with the proviso that they are converted into the desired tubular shape when passing through the annular gap, while on the other hand, a partial relocation of the fibers takes place through circumferential nozzle parts, by process for the production

artificial sausage casings by defibering

of collagen-containing animal material

Applicant:

Naturin-Werk Becker & Co., Weinheim (a. D. Bergstrasse)

DipL-Chem. Dr. Rolf Ahrens,

Lützelsachsen (a. D. Bergstrasse),

and Dr. Bruno Stahlberger, Buchs, St. Gallen

(Switzerland),
have been named as inventors

which the fibers are ordered in intersecting directions.

The hose emerging from the nozzle ring gap must now be subjected to drying and hardening will. This is generally done in such a way that the hose passes through as it exits the nozzle Introducing air is inflated and guided in the inflated state through a drying tunnel becomes, the z. B. is heated by passing warm air through.

The following means have so far been available for the hardening itself:

1. formaldehyde,

2. glyoxal,

3. malondialdehyde,

4. succindialdehyde,

5. glutaraldehyde,

6. Wood smoke distillate.

Each of these hardeners has particular advantages and disadvantages. The conditions that one would expect from an »ideal Hardeners «, but are not met by any of these substances.

Such an ideal hardener should have the following properties:

a) Can be mixed with the mass, c) Easily accessible,

b) cold curing,

d) no discoloration.

309 769/253

The following table shows that the known hardeners 1 to 6 have the properties a) to d) with the exception of formaldehyde never show together.

With the
Mixable mass Cold curing Easily accessible Discoloration formaldehyde
Glyoxal Yes
Yes
no
no
no
no Yes
no
Yes
Yes
Yes
Yes Yes
Yes
no
no
no
Yes no
no
yes, lemon yellow
yes, red-brown
no
no Malondialdehyde
Succindialdehyde
Glutaraldehyde
Wood smoke distillate

In itself, the formaldehyde would therefore meet all the requirements, but its use is not available contrary to food law regulations.

It has now been found that the physiologically harmless starch dialdehyde all under a) to d) specified conditions are met.

According to the invention, starch dialdehyde is incorporated in the form of aqueous starch into the fiber mass before shaping Solutions and dries the tubular structures obtained.

The tubular structure can be used before, during or after drying with an aqueous Handle the solution of sodium chloride, sodium acetate and sodium bicarbonate and dry again.

example

In 41% sodium acetate solution heated to 60 ° C 400 g of starch dialdehyde, 90% strength (90% of the theoretical Amount of aldehyde are present in the compound) - Manufacturer: Miles Chemical Company, Elkhart, Indiana, USA. -, brought in. After about 6 minutes there is a strong increase in viscosity, which is reflected loses again after a few more minutes. The solution process ends after a total of 15 minutes. The starch dialdehyde solution is cooled and is ready for use.

. To 96 kg of a collagen fiber mass with 11% dry matter content made from cattle hide gap and ready for shaping into a tube, the solution prepared as described above is added in portions within 10 minutes in the running kneader 41. The mixing process is over after one hour. (A thus prepared mass to advantageously have a _pH value between 2.5 and 3.5, at temperatures of 8-12 ° C can be stored for weeks without losing their properties, in particular to change its viscosity.)

The mass is cooled to a temperature of 12 ° C and then shaped into a tube and dried. Since the hose due to the acidic pretreatment p a very low _H value adopted, the work hardening proceeds relatively slowly away. One can speed up this process by washing the intestines with a weakly alkaline solution of, for example

4% sodium chloride,

4% sodium acetate and

2% sodium bicarbonate

freed from excess acid in water before, during or after drying. Finally, if necessary Dried so far that the tube folded into a tape has a softening effect retains sufficient moisture content.

The casings produced in this way do not need any starch dialdehyde treatment after being formed into a tube to be subjected to more, which makes production much easier. In addition, the dosage of the starch dialdehyde can be made much more accurately using the method described above.

Claims (2)

PATENT CLAIMS: 1. Process for the production of artificial sausage casings by defibering collagen-containing animal material, preferably animal skin, transferring the preferably swollen fiber mass into tubular form, ζ. Β. by pressing the mass through annular gap nozzles with partial rearrangement of the fibers by moving nozzle parts, and hardening of the sausage casings thus formed with the incorporation of hardening agents into the fiber mass and deformation thereof, characterized in that the fiber mass is incorporated in the form of aqueous solutions prior to deformation and the tubular structures obtained are dried. 2. The method according to claim 1, characterized in that the tubular structure before, during or after drying with an aqueous solution of sodium chloride, sodium acetate and sodium bicarbonate and dried again. © 309 769/253 12.63