JP2011078368A - Edible powder based on metal-added soybean powder and method for preparing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide edible powder that contains a metal and comprises soybean powder as a base to feed animals and a method for preparing the same. <P>SOLUTION: The edible powder comprises soybean powder and particles each containing at least one compound containing one or a plurality of kinds of amino acid metal complexes. The method for preparing the edible powder includes (a) the step for preparing an aqueous solution containing at least one kind of an amino acid and at least one kind of a metal, (b) the step for producing a fluidized bed of soybean powder particles, (c) the step for pulverizing the solution prepared by the step (a) on the fluidized bed of the soybean powder particles, and (d) the step for recovering obtained powder. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an edible powder based on soy flour for feeding animals with added metal.

  Currently, in providing an animal with a supplement containing one or more metals, a mixture of soy flour particles and particles of a mineral additive such as metal glycinate is added to the dietary intake. This mixture is easily produced using a worm gear mixing device.

  However, because the particle size and density of mineral additives are different from those of soy flour, the homogeneity of the final product is inadequate, especially when mineral additives such as copper glycinate are found in soy flour. When contrast is made with respect to color, it can be confirmed with the naked eye.

  Furthermore, the resulting mixture lacks stability and generally results in particle separation.

  Also, commercial products composed of a statistic mixture of soy flour and metal-containing compounds are usually very powderable and therefore difficult to handle.

French Patent No. 2833187 International Publication No. 03/049850 (Special Table 2005-518372) French Patent No. 2843752

  The main object of the present invention is to eliminate the aforementioned drawbacks.

  This object is achieved by a powder characterized in that it consists of soy flour and particles simultaneously containing at least one compound containing one or more amino acid metal complexes.

  Such powders are "non-statistical", i.e. completely homogeneous, dust-free (dust-free in English) and stable, with almost the same properties (metal content, nitrogen content, color, porosity) Etc.), it has truly evolved compared to known products.

The present invention also provides
a) preparing an aqueous solution comprising at least one amino acid and at least one metal;
b) producing a fluidized bed of soy flour particles;
c) pulverizing the solution prepared in step a) on a fluid bed of soy flour particles;
d) recovering the obtained powder, and also relates to a method for preparing a powder according to the invention.

  This method not only provides a satisfactory powder, but is also easy to implement.

  In addition, this method causes agglomeration between soy flour particles, and surprisingly, this method changes the particle size distribution, making the particle size distribution more uniform and moving to higher values.

  Other features and advantages of the present invention will now be described in more detail in the following description with reference to the accompanying drawings.

It is a figure which shows distribution of the size of the particle | grains of the first soybean powder. It is a figure which shows size distribution of the particle | grains of the powder by this invention which added copper. It is a figure which shows size distribution of the particle | grains of the powder by this invention which added iron. It is a figure which shows size distribution of the particle | grains of the powder by this invention which added zinc. It is a figure which shows size distribution of the particle | grains of the powder by this invention which added manganese.

  The powder according to the invention comprises soy flour and particles containing at least one amino acid metal complex.

  "Soy flour" means here any normal or genetically modified soy flour.

  The amino acid metal complex preferably has the dual function of allowing aggregation between the soy flour particles and preferably providing the metal in a form that can be absorbed by the animal body.

  Examples of amino acid metal complexes include glycine metal complexes. The glycine in question here is an amino acid officially called 2-aminoethanoic acid.

  The metal is usually zinc, copper, iron or manganese.

  Glycine metal complexes are well known, and are described in Patent Document 1, Patent Document 2, and Patent Document 3, in particular.

  Particular mention may be made of complexes obtained from glycine and copper sulfate pentahydrate, zinc sulfate monohydrate, iron sulfate heptahydrate or manganese sulfate monohydrate.

Preferably, the powder according to the invention is
-Between 9% and 11% by weight of metal relative to the total weight of the powder;
-5 to 11% by weight of nitrogen with respect to the total weight of the powder.

  Generally, 80% of the particles according to the present invention have a size comprised between 40 μm and 510 μm, and more than 90% have a size less than 510 μm.

  The powders according to the invention can be prepared by the process according to the invention described above for the main steps a) to d).

  In step a), water, at least one amino acid, and at least one metal sulfate salt can be mixed to prepare an aqueous solution. Then, the amino acid and metal sulfate metal salt dissolved in an appropriate molar ratio form a water-soluble amino acid metal complex.

In step b), preferably using an air stream having a temperature usually comprised between 80 and 200 degrees, for example at a flow rate comprised between 50 m ³ / h and 200 m ³ / h, A fluidized bed is produced by the method.

  In step c), it is desirable to heat the aqueous solution prepared in step a) at a temperature of 40 to 80 degrees and then pulverize.

  This percentage is determined by the type of metal, the nature of the compound to which the metal is fixed or bound, the final metal content targeted by the final product particles, and the temperature of the solution.

  The flow rate of the powdered solution is, for example, between 20 g / min and 100 g / min.

  The pressure of the aqueous solution in the powdering nozzle is usually between 1 bar and 4 bar.

  If the resulting powder particles are too small, they can be recycled by reintroducing them into the machine so that the final product has the desired particle size.

  The moisture content of the powders obtained by the process according to the invention, usually measured by halogen or infrared drying, is usually between 4% and 15%, in particular between 6% and 12%.

  The process according to the invention can be carried out continuously or intermittently.

If the method is carried out continuously, preferably a ′) preparing an aqueous solution comprising at least one amino acid and at least one metal;
b ′) adding soy flour particles to it;
c ′) creating a gas flux, in particular an air flow having a temperature comprised for example between 80 and 200 degrees and a flow rate of 50 m ³ / h to 200 m ³ / h;
d ′) pulverizing the suspension obtained at the end of step b ′) in the gas flux, for example at a flow rate between 20 g / min and 100 g / min;
e ') recovering the resulting powder.

  In step a) or a ′) of the continuous or intermittent process according to the invention, one or more of the amino acids, such as glycine, and the at least one metal source are present in succession by one or more of them. A compound comprising an amino acid metal complex can be formed, resulting in the formation of at least one amino acid metal complex.

  Preferably, in the aqueous solution of step a) or a '), the sum of the amino acid concentration and the metal concentration is comprised between 20 wt% and 60 wt%.

  For example, at least one amino acid and at least one metal sulfate salt can be mixed in water.

  As starting material, soy flour with a nitrogen content of 8.5% by weight is used.

The particle size distribution of this powder is relatively wide from 2 μm to 300 μm. This distribution is shown in FIG. 1 and its characteristic values are as follows:
-10% of the particles have a size of less than 7.4 μm-50% of the particles have a size of less than 18.0 μm-90% of the particles have a size of less than 74.4 μm

  As a result, 80% of the particles have a size comprised between 7.4 μm and 74 μm.

Addition of copper An aqueous solution is prepared containing 58.5 wt% water, 9.5 wt% glycine, and 32.0 wt% copper sulfate pentahydrate.

  The aqueous solution is then heated at 45 ° C.

Next, using a device named Procell 5 Glatt®, a soy flour particle fluidized bed was created with air having a temperature of 45 ° C. and a flow rate of 60 m ³ / h using 1960 g on 1200 kg soy flour. Of said aqueous solution.

  The powdering flow rate of the aqueous solution is 33 g / min and the nozzle pressure is 1.5 bar.

  The obtained particles are dried in a HR73 type halogen dryer of Mettler Toledo (Switzerland), and an instrument called “laser diffraction / scattering particle size distribution measuring device (LSPSD) LA950” of Horiba (France) is used. Used to measure particle size distribution.

The particle size distribution shown in FIG. 2 is obtained. Its characteristic values are as follows:
-10% of the particles have a size of less than 49.4 μm-50% of the particles have a size of less than 112.5 μm-90% of the particles have a size of less than 214.7 μm

  As a result, 80% of the particles have a size comprised between 49.4 μm and 214.7 μm.

  Thus, the particle size distribution of the resulting powder is more homogeneous than that of the starting soy flour. The top of the distribution has moved to the larger size side.

As a result, compared with the soybean powder particles at the start,
-10% of the smallest particles have increased in size by more than 500%-50% of the smallest particles have increased in size by more than 500%-90% of the smallest particles have increased in size by 200% It was confirmed that the level increased.

  The copper and nitrogen ratios measured by the UFAG Institute (Sulsay, Switzerland) are 8.9 wt% and 7.2 wt%, respectively.

  Similarly, the moisture content of the powder measured by halogen drying is 6.6% by weight.

Addition of iron An aqueous solution is prepared containing 53.4% by weight water, 9.7% by weight glycine, and 36.9% by weight iron sulfate heptahydrate. Next, as in Example 1, 2500 g of the prepared aqueous solution is powdered on 1000 kg of soybean powder.

The particle size distribution shown in FIG. 3 is obtained. Its characteristic values are as follows:
-10% of the particles have a size of less than 120.8 μm-50% of the particles have a size of less than 269.0 μm-90% of the particles have a size of less than 503.7 μm

  As a result, 80% of the particles have a size comprised between 120.8 μm and 503.7 μm.

  Thus, the particle size distribution of the resulting powder is more homogeneous than that of the starting soy flour. The top of the distribution has moved to the larger size side.

As a result, compared with the soybean powder particles at the start,
-10% of the smallest particles have increased in size by over 1500%-50% of the smallest particles have increased in size by about 1400%-90% of the smallest particles have 600% in size It was confirmed that the level increased.

  The ratio of iron and nitrogen measured as in Example 1 is 10.6% by weight and 6.5% by weight, respectively.

  The moisture content measured as in Example 1 is 10.4% by weight.

Addition of Zn An aqueous solution is prepared containing 68.0 wt% water, 9.5 wt% glycine, and 22.5 wt% zinc sulfate monohydrate.

  Next, as in Example 1, 2000 g of the prepared aqueous solution is pulverized on 1000 kg of soybean powder.

The particle size distribution shown in FIG. 4 is obtained. Its characteristic values are as follows:
-10% of the particles have a size of less than 114.0 μm-50% of the particles have a size of less than 240.5 μm-90% of the particles have a size of less than 468.3 μm

  As a result, 80% of the particles have a size comprised between 114.8 μm and 468.3 μm.

  Thus, the particle size distribution of the resulting powder is more homogeneous than that of the starting soy flour. The top of the distribution has moved to the larger size side.

As a result, compared with the soybean powder particles at the start,
-10% of the smallest particles have increased in size by over 1400%-50% of the smallest particles have increased in size by about 1200%-90% of the smallest particles have a size of 500% The increase was confirmed.

  The ratios of zinc and nitrogen measured as in Example 1 are 11.8% by weight and 6.8% by weight, respectively.

  The moisture content of the powder measured as in Example 1 is 6.4% by weight.

Addition of Mn Prepare an aqueous solution containing 68.0 wt% water, 9.6 wt% glycine, and 22.4 wt% zinc sulfate monohydrate.

  Next, as in Example 1, 2500 g of the prepared aqueous solution is powdered on 1000 kg of soybean powder.

The particle size distribution shown in FIG. 5 is obtained. Its characteristic values are as follows:
-10% of the particles have a size of less than 110.5 [mu] m-50% of the particles have a size of less than 217.9 [mu] m-90% of the particles have a size of less than 390.3 [mu] m

  As a result, 80% of the particles have a size comprised between 110.5 μm and 390.3 μm.

  Thus, the particle size distribution of the resulting powder is more homogeneous than that of the starting soy flour. The top of the distribution has moved to the larger size side.

As a result, compared with the soybean powder particles at the start,
-10% of the smallest particles had their size increased by about 1400%-50% of the smallest particles had their size increased by 1100% or more-90% of the smallest particles had 400% of their size The increase was confirmed.

  The ratios of manganese and nitrogen measured as in Example 1 are 10.1% by weight and 7.1% by weight, respectively.

  The moisture content of the powder measured as in Example 1 is 7.5% by weight.

Claims (13)

  A powder comprising particles each comprising soy flour and at least one compound containing one or more amino acid metal complexes.   The powder according to claim 1, wherein the amino acid is glycine and the metal is derived from a metal sulfate.   The powder according to any one of claims 1 to 2, wherein the metal is selected from the group consisting of zinc, copper, iron, and manganese.   4. Powder according to any one of claims 1 to 3, comprising between 9% and 11% by weight of metal relative to the total mass of the powder.   5. Powder according to any one of claims 1 to 4, comprising between 5% and 11% by weight of nitrogen relative to the total mass of the powder.   6. Powder according to any one of the preceding claims, having a size wherein at least 80% of the particles are comprised between 40 [mu] m and 510 [mu] m. a) preparing an aqueous solution comprising at least one amino acid and at least one metal;
b) producing a fluidized bed of soy flour particles;
c) pulverizing the solution prepared in step a) on a fluid bed of soy flour particles;
The method for preparing a powder according to any one of claims 1 to 6, further comprising: d) collecting the obtained powder. a ′) preparing an aqueous solution comprising at least one amino acid and at least one metal;
b ′) adding soy flour particles to it;
c ′) creating a gas flux;
d ′) pulverizing the suspension obtained at the end of step b ′) in a gas flux;
e ′) recovering the obtained powder. The method for preparing a powder according to any one of claims 1 to 6.   In step a) or a ′), an aqueous solution comprising at least one amino acid and at least one metal is prepared by mixing at least one amino acid and at least one metal sulfuric acid in water. The method according to claim 7 or 8.   10. The method according to any one of claims 7 to 9, wherein in the aqueous solution of step a) or a ') the sum of the amino acid concentration and the metal concentration is comprised between 20% and 60% by weight.   11. In step c) or d '), the aqueous solution prepared in step a) or a') is heated at a temperature of 40 to 80 degrees and then pulverized. the method of.   The method according to claim 7, wherein in step b) the fluidized bed of soy flour particles is made with an air stream having a temperature comprised between 80 and 200 degrees.   9. The method according to claim 8, wherein in step c ') the gas flux is an air stream having a temperature comprised between 80 and 200 degrees.

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