DE1012155B - Procedure for maintaining the feed value of thickened pressed fish waters - Google Patents

Description

GERMAN

kl. 53 g 4/02

INTERNAT. KL. A 23 It

PATENT OFFICE

K18486 IVa / 53 g REGISTRATION DATE: JUNE 18, 1953

NOTICE
THE REGISTRATION
AND ISSUE OF THE
EDITORIAL: JULY 11, 1957

Fish press waters contain a large number of active substances which are of great value in terms of feeding technology. For this reason, fish press waters are used as feed additives, mostly in a highly concentrated form. The advantageous feeding effect of the thickened fish press water is based in part on the content of vitamin B ₁₂ in them, which can be obtained from the fish press water by known processes. So it has been proposed, from raw materials that contain vitamin B ₁₂ or vitamin B contained ₁₂ -like substances to gain vitamin B ₁₂ or vitamin B to convert ₁₂ -like substances in vitamin B _12, by the raw materials with cyan ion, preferably Sodium cyanide, treated and the excess cyanide removed by vacuum evaporation and by adding minerals or acetic acid. However, the effectiveness of the thickened fish press water is largely based on other vitamins and active ingredients, some of which are still unknown in nature. While the content of vitamin B ₁₂ in the storage of thickened fish press water proves to be practically constant, the feed value of the thickened fish press water which can be determined in practical feeding experiments often falls to a considerable extent. This decrease in value is apparently due to the inactivation or destruction of the _{substance of the thickened fish press water, which does not represent vitamin B 12} , presumably due to the activity of protein-splitting ferments which does not come to a standstill.

The invention relates to a method for maintaining the feed value of thickened fish press water. According to the invention, this process is characterized in that the fish press water is treated with compounds which form cyanions, preferably sodium cyanide, and, after acidification, is thickened in vacuo to remove unchanged cyanide. In this way it is possible to suppress the effectiveness of the protein-splitting ferments from the muscle meat of sea fish. Experiments have shown that no additional amounts of vitamin B _{12 are} formed by such cyanide treatment of the fish press water. The otherwise slowly falling feed value of the thickened fish press water remains constant over a longer period of time. While thickened fish press water not treated according to the method according to the invention already results in a significant decrease in the feeding value after a storage time of about 6 months, especially in dry form, fish press water treated according to the method according to the invention show an unchanged feed value after the same period of time.

The following tests were carried out: It was on chicks a feed mixture with not treated by the method according to the invention fish press

Procedure for maintaining the feed value of thickened fish press water

Applicant:

Johannes Krüss Panto-Werk,

Bremerhaven fishing port,

Hochseestrasse

water paste and for comparison a feed mixture with Fischpreßwasserpaste treated according to the invention had been administered. This comparative experiment produced the following average results in two series of experiments :

Feed mix Feed mix with with invention untreated according to treated Fish press ter fish press water paste water paste Number of animals at the beginning of the Testes 11 11 Number of animals at the end of the Testes 9.5 10 Average Ge weight per animal at the beginning of attempts 42.9 g 43.9 g Average Ge weight per animal after 24 Tasren 259.9 g 246.9 g Average to took in 24 days ... 217.0 g 203.0 g Feed intake per day on average the Test time 21.5 g 21.9 g Feed conversion 1: 2.35 1: 2.6

These comparative experiments, which show that the treatment of the fish press water according to the method according to the invention, no additional amounts of vitamin B _{12 are formed} in the fish press water, were continued after the fish press water pastes had been stored for eleven months under normal storage conditions in order to reduce the influence of the inventive loading

709 587/51

action of the fish press water to maintain the feed value. This results in the following Results:

Feed mix Feed mix with with inventive untreated according to treated - fish press ter fish press "water paste water paste Number of animals at the beginning ... 10 ' 10 Number of animals at the end ..... 10 "■■ 10 losses " Average Ge weight at the beginning of the try 49.5 g 49.8 g Average Ge weight after 20 days .. 211.0 g 247.5 g Increase in 20 days .. 161.5 g 197.7 g Increased gain - 36.2 g Additional increase in% ... - 22.0% Feed intake per day 19.7 g 21.3 g Feed intake for 1 g increase 2.6 g 2.3 g Under consumption Feed per g gain ... - 11.5%

The comparative tests show that after storage of the fish press water pastes for eleven months under normal room conditions the fish press water concentrate treated according to the invention had a 22% higher weight gain of the chicks as well as an 11.5% improvement in feed value compared to that not according to the method according to of the invention treated fish press water concentrate.

When carrying out the method according to the invention, it is expedient to partially thicken the fish press water before adding cyanide. It can in practice of the process according to the invention, the Cyanideinwirkung initially at a _pH value of 8, and then, preferably carried out after 24 hours of standing at a pn-value of 6, and after further allowing to stand for preferably 24 hours, the pH value can set to 5 and thickened in vacuo.

Sodium hydroxide solution can preferably be used to set the pn value 8; are suitable for this but also potassium hydroxide, calcium hydroxide, aqueous solutions of ammonia or organic bases. That Acidification can be done with inorganic or organic acids.

Embodiment 1

10001 de-oiled fish press water is brought to a pn value of 8 with sodium hydroxide solution and 2 kg of sodium cyanide are added. The mixture is then left to stand at room temperature for 24 hours. The ρπ value is then reduced to 6 by adding acid and the mixture is left to stand for another 24 hours. The pH of the solution is then brought to 5 by adding more acid. Finally, it is thickened in vacuo to the desired concentration.

Embodiment 2

500 kg of a de-oiled and already partially thickened fish press water with a concentration About 20% dry matter is mixed with 1.5 kg of sodium cyanide, with a solution of ammonia brought to a pH of 8 and left to stand at room temperature for 24 hours. Then through Addition of acetic acid adjusted to a pn value of 6 and the fish press water left to stand for a further 24 hours. Finally, more acid is added up to Set a pn value of 5 and continue in a vacuum thickened.

Claims (3)

PATENT CLAIMS: 1. A method for maintaining the feed value of thickened fish press water, characterized in that, that the fish press water is treated with compounds which form cyanions, preferably sodium cyanide and after acidification are thickened in vacuo to remove unchanged cyanide. 2. The method according to claim 1, characterized in that the Fischpreßwässer before the addition be partially thickened by cyanide. 3. Process according to Claims 1 and 2, characterized in that the action of cyanide initially at a pn value of 8 and then, preferably after standing for 24 hours, at one PH value of 6 takes place and that after further standing, preferably for 24 hours, the pH value is set to 5 and thickened in vacuo. Considered publications:
U.S. Patent No. 2,530,416. © 709 587/51 7.