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Method for preparing metal ion amino acid chelate with oxhide

A metal ion, amino acid technology, applied in the application, animal feed, animal feed and other directions, can solve the problems of environmental pollution of cattle hair by-products in the leather industry, and achieve the effect of improving the utilization rate

Inactive Publication Date: 2012-07-04
YANGZHOU UNIV +1
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  • Description
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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing metal ion amino acid chelates from cowhide, which can solve the environmental pollution problem of cow hair by-products in the leather industry. Utilization of

Method used

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  • Method for preparing metal ion amino acid chelate with oxhide
  • Method for preparing metal ion amino acid chelate with oxhide
  • Method for preparing metal ion amino acid chelate with oxhide

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Experimental program
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Embodiment Construction

[0016] 1) Shred the cowhide, pretreat it with petroleum ether to remove the fat in the cowhide, then dry it, hydrolyze the pretreated cowhide with acid, neutralize, concentrate, and crystallize to obtain compound amino acids:

[0017] Cut the cowhide into pieces, weigh 100g of cowhide, put it into a Soxhlet extractor, add 100mL of petroleum ether into the flask, react for 8 hours, take it out, dry it, and cut it into pieces. Put the pretreated cowhide and 8mol / L sulfuric acid solution in a round-bottomed flask, the ingredient ratio m (cowhide): v (sulfuric acid) = 1:2.5, heat in an oil bath, keep at 110 ° C, stir, stop heating after 10 hours, liquid It is dark brown and viscous. Transfer the liquid to a beaker, add calcium hydroxide to neutralize and filter, add an appropriate amount of activated carbon to the filtrate, heat, filter, and concentrate the liquid until a large amount of solids are precipitated.

[0018] The total nitrogen content was measured by the Kjeldahl meth...

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Abstract

The invention relates to a method for preparing a metal ion amino acid chelate with oxhide. The method comprises the following steps: (1) extracting composite amino acid from oxhide: pretreating oxhide with petroleum ether, removing fat from oxhide, hydrolyzing with sulfuric acid with a concentration of 8 to 12 mol / L at a temperature of 80 to 110 DEG C according to a mass to volume ratio of oxhide to sulfuric acid of 1:2.5 to 1:4 after air drying, and obtaining the composite amino acid through neutralization and condensation; and (2) obtaining the metal ion amino acid chelate through chelating the obtained composite amino acid with metal elements such as Zn, Cu, Fe, Mg or Mn. According to the method provided by the present invention, the environmental pollution problem of a byproduct oxhide in the leather industry is solved, the prepared trace element chelate allows the utilization rate of the metal elements of animals to be improved, and the chelating rate of the metal element chelate prepared through the method is equal to or more than 70%.

Description

technical field [0001] The invention belongs to the field of feed processing and relates to a method for preparing metal ion amino acid chelates from cowhide. Background technique [0002] Amino acid is a general term for a class of organic compounds containing amino and carboxyl groups. The basic unit of biofunctional macromolecular protein is the basic substance that constitutes the protein required for animal nutrition. More than 300 kinds of natural amino acids have been discovered, of which there are about 22 kinds of amino acids needed by the human body, divided into non-essential amino acids and essential amino acids (the human body cannot synthesize them by itself). Amino acid is the most basic substance that constitutes biological proteins and is related to life activities. It is the basic unit of protein molecules in organisms and has a close relationship with biological life activities. It has special physiological functions in antibodies and is one of the indis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/16A23K1/10A23K10/26A23K20/142A23K20/20A23K20/24
Inventor 赵国琦霍永久徐嗣昌袁宇金晓君邓波波刘旭
Owner YANGZHOU UNIV