Method for preparing calcium citrate with oyster shells and fan shells

A technology of calcium citrate, oyster shells, applied in the field of food science

Inactive Publication Date: 2012-02-01
HEBEI AGRICULTURAL UNIV.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent uses pure natural biological calcium sources --- oyster shells and scallop shells, which can not only rationally use calcium resources, turn waste into treasure, but also improve product safety, which is an excellent raw material

Method used

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Embodiment Construction

[0015] Preparation of calcium citrate

[0016] After cleaning the oyster shells and scallop shells, they are calcined at a high temperature of 1000 ° C for 4-5 hours to form calcium oxide white powder after calcination. The calcium oxide is fully dissolved in 20% hydrochloric acid to obtain calcium chloride solution, calcium chloride solution and The trisodium citrate solution is reacted in a water bath at 70~100°C for 10~20min, wherein the molar ratio of the calcium chloride solution and the trisodium citrate is 3:2, after the reaction is completed, it is cooled to room temperature, washed with distilled water and filtered 2~3 times, Dry the filtrate at 70-100°C to obtain pure white calcium citrate powder, which is dried and preserved.

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Abstract

The invention discloses a method for preparing calcium citrate with oyster shells and fan shells, comprising the following steps: selecting biological calcium sources, oyster shells and fan shells, for fully ashing, using the ash content as raw material, dissolving the raw material with hydrochloric acid having a certain concentration, letting the dissolved raw material react with sodium citrate under water phase conditions at the temperature of 70-100 DEG C to prepare citric acid chelated calcium. The weight ratio of the ash content to calcium citrate, reaction time and reaction temperature are three influencing factors. By optimizing the reaction conditions, a method which has optimal chelating effect and is economical and practical is obtained.

Description

technical field [0001] The invention relates to a preparation method for preparing calcium citrate by utilizing biological calcium sources, oyster shells and scallop shells, and belongs to the technical field of food science. Background technique [0002] Calcium is a well-known inorganic nutrient, and is the fifth constituent element in the human body following C, H, N, and O. It is closely related to human nerve conduction, heart regulation, muscle contraction, blood coagulation, enzyme activation, endocrine regulation, etc. It plays an extremely important role in human growth and development, improving bone density and maintaining health. The use of waste shells to make calcium citrate product, calcium citrate, improves the bioavailability, not only saves resources, protects the environment, but also facilitates human absorption and increases the calcium content of the human body. The most prominent role is that diabetic patients can take it with confidence, which solves...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/304A23L1/28A23L1/33A23L17/40
Inventor 桑亚新王向红刘喆饶欢郝皎洁周群标
Owner HEBEI AGRICULTURAL UNIV.
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