Preparation method of composite calcium amino acid chelate by hems of shells and scallops as raw materials

A compound amino acid and scallop skirt technology, which is applied in the preparation of organic compounds, chemical instruments and methods, organic chemical methods, etc., to achieve the effect of good product quality and simple process

Inactive Publication Date: 2012-05-09
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of waste from shellfish processing, oyster shells, sca...

Method used

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Examples

Experimental program
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Effect test

example 1

[0014] Example 1: Soak 1.2 kg of oyster shells in 0.05M hydrochloric acid solution for 1 hour, then scrub to remove the silt and other adsorbents on the surface of the shells, dry at 100°C, crush them through a 60-mesh sieve, and then process them with tap water to obtain the synthetic Compound amino acid chelated calcium uses 1 kg of calcium source shell powder, according to the stoichiometric relationship, add hydrochloric acid to convert it into 1 liter of 9.2M calcium chloride; 1 kg of fresh scallop skirt is homogenized with tap water of the same weight, heated to 50 ° C, and adjusted to pH 6. 5. Add 0.25 grams of neutral protease and 0.25 grams of papain for enzymatic hydrolysis for 5 hours; after inactivation treatment, add 0.5 grams of acidic protease for 5.5 hours at 45°C and pH 2.5. The enzymolysis solution is inactivated, centrifuged, and the insoluble matter is discarded to obtain a compound amino acid solution. Mix the calcium chloride solution obtained above with ...

example 2

[0017] Example 2: The steps and method are the same as in Example 1. The raw material is selected scallop shell or clam shell, and the quality of the compound amino acid chelated calcium product prepared by it is the same as that of the oyster shell raw material.

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PUM

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Abstract

The invention relates to a preparation method of composite calcium amino acid chelate by hems of shells and scallops as raw materials, comprising the steps of using 0.05 M of hydrochloric acid to soak shells, drying and crushing the shells, treating the shells powder by water-refining method, obtaining calcium-based shell powder; using neutral protease, papain and acid protease to perform enzymolysis for hems of fresh scallops, obtaining composite amino acid solution; mixing the composite amino acid and the shell powder according to the mol ratio of 2: (1.0-1.2) (based on 92% of calcium content in the calcium carbonate; performing chelating in a gradient manner at pH of 5, pH of 8 and pH of 11 in turn; maintaining the temperature for 2 h under every pH gradient; condensing the mixture solution to be paste, adding absolute ethyl alcohol to precipitate; performing low-temperature re-crystallizing and drying by absolute ethyl alcohol, and obtaining composite calcium amino acid chelate. The method is simple and convenient and can process wastes such as hems of shells and scallops in a high value manner.

Description

Technical field: [0001] The invention relates to a method of utilizing shellfish processing wastes (oyster shells, scallop shells, etc.) A process for producing compound amino acid chelated calcium. Background technique: [0002] The improvement of calcium content in food is one of the main ways to solve the problem of calcium deficiency. [0003] At present, most of the calcium supplements widely used in food are calcium salts, such as calcium phosphate, calcium carbonate, calcium gluconate, calcium acetate, calcium lactate, etc., but there are generally disadvantages such as low absorption rate. Amino acid chelated calcium has been paid more and more attention because of its easy absorption and low toxicity. [0004] In recent years, the types and quantities of marine aquaculture in my country have advanced by leaps and bounds. Among them, more than 75% of the marine aquaculture output is shellfish. According to the report of the Food and Agriculture Organization of the...

Claims

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Application Information

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IPC IPC(8): C07B61/00C07C227/28C12P13/00
Inventor 魏玉西张行行葛文静
Owner QINGDAO UNIV
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