DK153622B - DENATURED SKIMMED MILK POWDER MIXTURE - Google Patents

Description

DK 153622B

The invention relates to a skimmed-milk powder mixture denatured by the addition of fish meal.

Skimmed milk powder made from skimmed whole milk, e.g. by spray drying, is usually intended for human nutrition.

For fattening cattle, in the context of state subsidy measures, skimmed milk is released only on condition that it is denatured to avoid abuse. As denaturing agent, fish meal with a moisture content of from 8 to 10% is usually used. The denatured skimmed milk powder mixture you get 2

DK 153622B

in this way, consists of approx. 2/3 - 3/4 skimmed milk powder and 1/4 -1/3 fishmeal. Due to the high moisture content, this mixture is not silo-proofed for more than 20 minutes. After that, the mixture is no longer rice-proof.

It is well known to put approx. 4% naturally occurring silicas or silicates, e.g. diatomaceous earth, for the denatured skimmed milk powder mixture to improve silage. However, the effect of this addition is not satisfactory because even with this addition after a longer silo residence time it is necessary to squeeze out the stored product. The high addition of 4% naturally occurring silicas or silicates, such as diatomaceous earth, also presents the disadvantage that with such a large proportion of inert substance the energy balance is affected by the skimmed-milk powder mixture used as feed material, ie. that the feed value is not optimal.

The present invention is intended to provide a skimmed milk powder mixture containing fish meal and not having the aforementioned disadvantages.

This is achieved according to the invention with a skimmed milk mixture, characterized in that it contains 65 to 75% by weight of skimmed milk powder and 25 to 35% by weight of fishmeal, calculated on the basis of the skimmed milk mixture without silicic acid, and 0.4 to 0.8% by weight (based on of the whole mixture) precipitated, spray-dried silicic acid having the following chemical-physical properties.

Surface according to BET (DIN 66131) m / g 190 Drying loss DIN 55921 (2 hours at 105 ° C)% 6

Pre-annealing loss DIN 55921 (2 hours at 1000 ° C calculated on the substance dried for 2 hours at 105 ° C)% 5 pH DIN 53200 (in 5% aqueous dispersion) 6.3

Oil number (DIN 53199) 300

Mean size of the primary particles nm 18

The precipitated precipitated spray-dried silicic acid contained in the skimmed-milk powder mixture may exhibit different average sizes of secondary particles (detected by electron microscopy). In a preferred embodiment, the silicic acid provides an average size of secondary particles of 10 µm (see Example 2) or 80 µm (see Example 1). Correspondingly, the stamp weight ("Stampfgewich") (DIN 53194) amounts to those in the foam.

3 DK 153622 B

the milk powder mixture preferred silicic acids 100 or 200 g / l.

These silicic acids are products of the Degussa irma and are commercially available under the name "Sipernat 22" or "22S".

In addition, from patent specification 295306 a feed containing skimmed milk powder, animal or vegetable fat, emulsifiers, nutrients and possibly antioxidants is known.

This mixture, which, due to high fat content, tends to clump together, has been rendered rice-resistant by the addition of a 2 silicic acid with a BET surface of 50-500 m / g.

From K.H. Muller: "Synthetic silica as auxiliary in the feed industry". Kraftfutter, 1970, Vol. 53, pages 436-450, it is known to use 1-3% of the synthetic silicic acids "Sipernat 22" and "22S" to render a compound feed as described in the above-mentioned AT patent.

These writings, however, give no reason to believe that by adding the silicic acid according to the invention in such small quantities one should be able to obtain a rice-capable denatured skimmed milk powder mixture with the composition of the invention which is a completely different composition from that of the feed according to the above-mentioned patent. the reason why the feed mixtures according to these writings clump together is another, namely the high fat content.

Silo tests show that a content of from 0.7% by weight of silicic acid produces optimum rice properties of the skimmed-milk powder mixture denatured with fish meal, ie. that, with minimal amounts of added silicic acid, an optimum enhancement of the silo properties of the denatured skimmed milk powder bleaching is obtained. This means that the inertia disturbing in the energy balance used in the skimmed-milk powder mixture can be kept very small. The skimmed milk powder mixture also runs out of the silo for a long time and does not need to be read out.

Example 1 71.5 parts by weight of skimmed milk powder and 28.5 parts by weight of fishmeal were mixed by means of a Heesen mixer.

Then 0.7 parts by weight of precipitated and spray-dried silicic acid, calculated on the whole skimmed-milk powder mixture, are mixed.

The denatured skimmed milk powder mixture thus obtained is still silo-proofed after one month.

Claims (1)

The precipitated and spray-dried silicic acid obtained in the skimmed milk powder mixture of Example 1 shows the average physico-chemical data below, an average size of the 80 µm secondary particles, a density of 200 g / l and DET 53194 and a BET surface (DIN 66131) of 190 m2 / g. Example 2 70 parts by weight of skimmed milk powder and 30 parts by weight of fishmeal are mixed by means of a Heesen mixer. 0.7 parts by weight of precipitated and spray-dried silicic acid, calculated on the total skimmed-milk powder mixture, are then added. The denatured skimmed milk powder mixture thus obtained is still silo-lined after one month. The precipitated and spray-dried silicic acid present in the skimmed-milk powder mixture of Example 2 shows the physicochemical data given below: an average size of the 10 µm secondary particles, a stamp density (DIN 53194) of 200 g / l, and a BET surface of DIN 661 of 190 m2 / g. Denatured skimmed-milk powder mixture, containing fishmeal, characterized in that it contains 65 to 75% by weight of skimmed-milk powder and 25 to 35% by weight of fishmeal, calculated on the basis of the skimmed-milk mixture without silicic acid, and 0,4 to 0,8% by weight mixture) precipitated, spray-dried silica with the following physicochemical data: Surface according to BET (DIN 66131) m2 / g 190 Dry loss DIN 55921 (2 hours at 105 ° C)% 6 Pre-annealing loss DIN 55921 (2 hours at 1000 ° C calculated on the substance dried for 2 hours at 105 ° C)% 5 pH DIN 53200 (in 5% aqueous dispersion) 6.3 Oil number (DIN 53199) 300 Mean size of the primary particles nm 18,