DE707867C - Process for the disinfection of infected natural intestines - Google Patents

Description

Process for the disinfection of infected natural intestines A large part of the resulting animal The intestines cannot be wrapped as because it comes from sick animals and accordingly with dangerous diseases exuberant germs infecting him useless for human consumption do. Such infected intestines became so far due to the veterinary age - search destroyed. Since it is quite large 'Volumes, it appears from the economist economic standpoint, according to ways to look to these intestines for a thorough- ; more mature; the germination for use to lead. Many disinfection methods that are otherwise in Question come, part with regard to bowels the end; so can z. B. the physical development Kcimungsmetlioden by dry or damp Not heat or even from steam angcwaridt graze as they coagulate of intestinal protein. Even C @ eliandltingen are by chenaean 'means known. According to the procedure of K e 1 1 er; Zei- Scripture for meat and nilcliNgicte. Vol. 18, HAI 2) thereby cr; tkcirnt; daL ', After carding and cleaning, they are put in 3% soda solution for 1 day, 3% formalin solution for 1 day, water for 1 day, 5% ammonia solution for 1 day and again in water for 1 day. Although this method gives very good bacteriological results, it takes a lot of time and involves considerable costs for reagents.

According to the Gis s k-c (Deutsche Tierärztliche Wochenschrift, Volume 46, No. 2S and 29), the intestines are made sterile by keeping them for j hours soaked in several times renewed water from 3o to 40 °, then 24 hours in one j% tartaric acid solution inserted after they have been rinsed with this solution, and finally rinsing with water for 2 hours This procedure takes about double that as expensive as the first one is. sufficient to kill germs of tubercle bacilli not from.

Finally, the casings can be sterilized after S c h a t -t e n fr o lt in a 20% hydrochloric acid solution to which 10% table salt is added, for 2 days 20 'or 6 hours at 40 ° g @ pi @ kclt. ü: diluted soda solution washed out and to be watered. With this treatment the intestine is attacked and in its mechanical properties weakened.

It has now been found that one can infect: natural intestines through and can be sterilized cheaply by using celluloselialtiger distillates Substances, especially wood, or treated with their aqueous solution, with the Distillates or Lö = un; #cn <must have a number greater than i. ~ It was found that the disinfecting properties of the desiillates of cellulosic substances are not solely on their formaldehyde content, but generally on their content can be traced back to iodine-consuming substances. These substances have an iodine level the desillates to be used or their solutions expressed. Below iodine number is understood in the usual way that amount of iodine, expressed in grams, that of t oo g liquid under the conditions of iodoineti-isclien formaldehyde determination according to R o nn i j n UIIinaiin, Encyclopedia of Technical Chemistry, 2nd Autl-Bd. 5. P. 442 [1928] j is used. It has been found that you can achieve successful sterilization can only perform with distillates or their aqueous solutions. the one iodine number about i have. It is often useful to use solutions with a higher iodine number to work. @ -orzugswcise distillates or solutions are used that have an iodine number from 2.o to S.5 have.

Generally it is not required; that the iodine number is on one Content of the distillates or solutions based on formaldehyde. But the formaldehyde has undoubtedly, within certain limits, vain beneficial influence on the intestines. The formaldehyde level is too high. so the intestines can be hardened easily, too much become and become brittle. Distillates or solutions are preferably used an iodine number of 2, o to 8.5 and a formaldehyde content of 0.025 to 0.2 (1, 'o exhibit. -The hydrogen ion concentration of the distillates or solutions is for their sterilizing effect is of little importance. In general it is recommended however, discontinue the solutions sour. The best results were obtained with p "-V4ei-ien from 2.5 to 3.o achieved.

Cellulose-containing liquids are used to produce the disinfectant Substances, especially wood and wood waste products, e.g. B. sawdust or sawdust, thrown into a Schweleng. The resulting distillate contains up to 0.6% formaldehyde and has an iodine number of about 425 The crude distillate is distilled, whereby a product is obtained whose Forinaldc hydgehah almost unchanged, whose But the iodine number has dropped to 2o to 25. This pure distillate is made by adding water diluted to the desired iodine number. Is the iodine number of the diluted distillate less than I, o. so much crude distillate is added until the iodine number is reached is. The formaldehyde content can be adjusted in a similar way. The hydrogen ion concentration becomes by adding formic acid or acetic acid, if the distillate is too alkaline, and by the addition of atninoniak, snlci-ti it zti is sour, ceased.

In the exercise of @ 'Ci-Irilli-ei7S, the intestines to be treated become dry subjected to careful cleaning, degreasing and stamping. Be on it If possible, watered them with erratic water and then with the distillates bmv. Solutions treated. The duration of treatment depends on the strength of the distillate away. When using distillates with an iodine number of 1 to 2 is a treatment duration of 24 hours is sufficient. With a stronger distillate, you get there with less Hours off. The duration of treatment is important for success. Even if basically with appropriate measurement of the treatment time at very different temperatures can be worked, it is advisable to sterilize at temperatures from 25 to 35 °. After the end of the bhajai period, the intestines are grounded watered thoroughly again and are ready for use. Treatment can be given if necessary be repeated.

Bacteriological studies have shown that the described Treatment of the intestines with distillates of cellulose-containing substances or their solutions leads to complete disinfection. In particular, this treatment is also sufficient to Kill bovine tubercle bacteria completely.

The intestines receive one more in the treatment according to the invention or less salmon color, which is desirable and a completely fresh look confers. From Bcdcutur: g is that the Darrn is hardened during the treatment, whereby its tear resistance is increased, which in turn is used when the intestines are stuffed The smell of the distillates, which after the treatment adheres to the intestine. can be made perfect by \ Vässer-ni; remove. Roughly backward C @ eruchrcstc are not annoying, as they are made with smoke items are similar.

It is already known to smoke meat products with an agent d. H. to improve their taste, which comes from the dry distillation of Wood extracted at 38o to 50o ' Wood vinegar by distilling off of the wood vinegar down to the hard pitch and subsequent boiling or neutralizing won, was. It is also known to harden artificial casings, i.e. their water resistance to be improved by treatment with liquids, preferably cellulosic distillates Substances that have a formaldehyde content of o; 025 to o, 2 @ jo, on an iodine number from 3.5 to 8.5 and to a p "- @ #. 7ert from 2.5 to 3.0. These methods, which were known in completely different fields of work, could do not suggest the method according to the invention.

Claims (2)

PATENT CLAIMS: I. Method for disinfecting infected natural intestines with chemical means, characterized in that the intestines with distillates cellulosic substances. in particular wood, or with their aqueous solutions an iodine number above i. 2. The method according to claim i, characterized in that distillates or solutions are used which have an iodine number of 2, o to 8.5, a formaldehyde content of 0.025 to 0.20; o and a pH of 2.5 to 3.0 .