Method for removing lead and cadmium in sunflower seed protein

A sunflower seed and protein technology, applied in plant protein processing, food science, etc., can solve problems such as pollution, heavy metal enrichment, food safety impact, etc., and achieve high economic benefits, mild operating conditions, and high safety effects

Inactive Publication Date: 2017-03-01
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the pollution of agriculture by industry and mining, the problem of heavy metal pollution in sunflower seeds has gradually been exposed.
The combin

Method used

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  • Method for removing lead and cadmium in sunflower seed protein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Take 100 kg of sunflower seed protein powder, add 980 kg of drinking water, and mix well; (2) Adsorption reaction: Slowly add 3.0 mol / L sodium hydroxide to adjust the pH of the slurry to 9.6. After the protein is completely dissolved, add 3.2 Kilograms of insoluble dietary fiber (the mass ratio of cellulose and lignin is 3:2, and the average particle size is 980 mesh), mixed well, kept at 50°C for 4.3 hours, during which the stirring speed was 4000 rpm; (3 ) Solid-liquid separation: carry out solid-liquid separation, remove insoluble solids, and replace chelation with the protein slurry; (4) replace chelation: add 320 grams of zinc gluconate to the sunflower seed protein slurry, stir for 30 minutes at 45 ° C, and the stirring speed is 3500 rpm; (5) pH adjustment: adjust the pH of the sunflower protein slurry to 6.5 within 10 minutes; (6) Sterilization, dehydration and drying: the slurry is sterilized, then dehydrated and dried to obtain sunflower protein product.

Embodiment 2

[0019] (1) Take 100 kg of sunflower seed protein powder, add 980 kg of drinking water, and mix well; (2) Adsorption reaction: Slowly add 3.0 mol / L sodium hydroxide to adjust the pH of the slurry to 9.6. After the protein is completely dissolved, add 3.2 Kilograms of insoluble dietary fiber (the mass ratio of cellulose and lignin is 3:2, and the average particle size is 980 mesh), mixed well, kept at 50°C for 4.3 hours, during which the stirring speed was 4000 rpm; (3 ) solid-liquid separation: perform solid-liquid separation to remove insoluble solids; (4) pH adjustment: adjust the pH of the sunflower seed protein slurry to 6.5 within 10 minutes; (5) sterilization, dehydration and drying: the slurry is sterilized, Then it is dehydrated and dried to obtain the sunflower seed protein product.

Embodiment 3

[0021] (1) Take 100 kg of sunflower seed protein powder, add 980 kg of drinking water, and mix well; (2) Adsorption reaction: Slowly add 3.0 mol / L sodium hydroxide to adjust the pH of the slurry to 9.6. Keep at ℃ for 4.3 hours, stirring continuously during the period, the stirring speed is 4000 rpm; (3) pH adjustment: adjust the pH of the sunflower seed protein slurry to 6.5 within 10 minutes; (4) Sterilization, dehydration and drying: the slurry is carried out Sterilize, then dehydrate and dry to obtain sunflower seed protein products.

[0022] Effect analysis of different embodiments:

[0023]

[0024] Note: The higher the score of sensory quality, the better the taste

[0025] Compared with Examples 2 and 3, the contents of lead and cadmium in Example 1 processed by the present invention were reduced to 0.113 mg / kg and 0.021 mg / kg respectively; unanimous.

[0026] After the present invention adopts insoluble dietary fiber with a particle diameter of 980 meshes for ads...

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Abstract

The invention relates to a method for removing lead and cadmium in a sunflower seed protein. The method comprises sunflower seed protein powder taking, adsorption reaction, solid-liquid separation, substitution chelating, pH adjustment, sterilization, dehydration and drying. The method can effectively reduce lead and cadmium content of the sunflower seed protein and does not influence the sunflower seed protein appearance and nutritional value.

Description

technical field [0001] The invention relates to a method for removing lead and cadmium from sunflower protein, belonging to the field of agricultural product processing. Background technique [0002] Sunflower protein has a good amino acid composition ratio, is an excellent plant protein, and has important utilization value. However, due to the pollution of agriculture by industry and mining, the problem of heavy metal pollution in sunflower seeds has gradually been exposed. Lead and cadmium combined with sunflower protein in the form of complexes, resulting in the accumulation of heavy metals in sunflower protein, which affected its food safety. [0003] Lead and cadmium can accumulate in living organisms and seriously endanger human health. The interaction between lead and biomolecules in the body will damage reproductive, nervous, digestive, immune, kidney, cardiovascular and other systems, affecting growth and development. After being absorbed by the human body, cadmi...

Claims

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Application Information

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IPC IPC(8): A23J3/14A23L5/20
CPCA23J3/14
Inventor 夏冬华
Owner NANCHANG UNIV
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