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Method for removing arsenic and mercury in lotus seed protein through cooperation of chelating and adsorption

A chelation adsorption, lotus seed technology, applied in the direction of plant protein processing, food ingredients as chelating agents, food processing, etc., can solve the problems of protein food safety impact and other issues

Inactive Publication Date: 2017-02-15
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Arsenic and mercury are attached to protein, which affects the food safety of protein

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Mixing: Take 100 kg of lotus seed protein powder, add 1120 kg of drinking water, and mix well; (2) Chelation: Add 2.2 kg of malic acid and 2.8 kg of tartaric acid, then adjust the pH of the slurry to 3.5, mix well, and keep at 44°C Keep under high temperature for 2.6 hours, during which the stirring speed is 4200 rpm; (3) Adsorption: adjust the pH of the lotus seed protein slurry to 4.6, add 3.8 kg of microcrystalline cellulose (average particle size is 300 mesh), and stir at 48 ° C For 48 minutes, the stirring speed was 4600 rpm; (4) solid-liquid separation: carry out solid-liquid separation to remove insoluble solids; (5) substitution: adjust the pH of the lotus seed protein slurry to 5.4, add 260 grams of zinc chloride, at 46 ° C Stir for 52 minutes at a stirring speed of 3200 rpm; (6)) Conditioning: adjust the pH of the lotus seed protein slurry to 6.5 within 15 minutes; (7) Sterilization, dehydration and drying: the slurry is sterilized and then dehydrated , dr...

Embodiment 2

[0022] (1) Mixing: Take 100 kg of lotus seed protein powder, add 1100 kg of drinking water, and mix well; (2) Chelation: Add 2.0 kg of malic acid and 2.6 kg of tartaric acid, then adjust the pH of the slurry to 3.3, mix well, and store at 42°C Keep under high temperature for 2.4 hours, during which the stirring speed is 4000 rpm; (3) Adsorption: adjust the pH of the lotus seed protein slurry to 4.4, add 3.6 kg of microcrystalline cellulose (average particle size is 280 mesh), and stir at 46 ° C For 46 minutes, the stirring speed was 4400 rpm; (4) solid-liquid separation: carry out solid-liquid separation to remove insoluble solids; (5) replace: adjust the pH of the lotus seed protein slurry to 5.2, add 240 grams of zinc chloride, at 44 ° C Stir for 50 minutes at a stirring speed of 3000 rpm; (6)) Conditioning: adjust the pH of the lotus seed protein slurry to 6.3 within 15 minutes; (7) Sterilization, dehydration and drying: the slurry is sterilized and then dehydrated , drying...

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Abstract

The invention relates to a method for removing arsenic and mercury in lotus seed protein through cooperation of chelating and adsorption. The method comprises the following steps of taking lotus seed protein powder, performing pulp blending, performing chelating, performing adsorption, performing solid-liquid separation, performing substitution, performing conditioning, performing sterilization, performing dehydration, performing drying and the like. According to the method disclosed by the invention, the contents of the arsenic and the mercury in the lotus seed protein can be effectively and synchronously reduced, and the feeling quality and the nutrient value of the lotus seed protein cannot be influenced.

Description

technical field [0001] The invention relates to the cooperative removal of arsenic and mercury in lotus seed protein by a chelating adsorption method, and belongs to the field of agricultural product processing. Background technique [0002] Lotus seed protein has a good amino acid composition ratio and high digestibility. It is an excellent vegetable protein and has important utilization value. In recent years, with the development of industry and mining, the problem of heavy metal pollution has gradually been exposed. Arsenic and mercury are attached to protein, which affects the food safety of protein. After being eaten, proteins rich in arsenic and mercury can accumulate in living organisms, seriously endangering human health. Contents of the invention [0003] The invention aims to provide a method with simple method and reasonable cost to reduce the content of arsenic and mercury in lotus seed protein and improve food safety. [0004] The chelation adsorption meth...

Claims

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Application Information

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IPC IPC(8): A23J3/14A23L5/20
CPCA23J3/14A23V2002/00A23V2200/214A23V2250/044A23V2250/056A23V2250/51084A23V2300/50A23V2250/548
Inventor 刘军平
Owner NANCHANG UNIV
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