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Cadmium-eliminated desensitized rice protein, and preparation method and application thereof

A technology of rice protein and cadmium removal, which is applied in application, food preparation, food science, etc., can solve problems such as excessive cadmium content and excessive wheat allergens, and achieve simple operation, best desensitization effect, and best cadmium removal effect good effect

Active Publication Date: 2015-04-15
义乌市海之纳生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] One of the objectives of the present invention is to solve the problems of high cadmium content in existing rice protein and excessive wheat allergens, and provide a de-cadmium desensitized rice protein whose cadmium content is lower than 0.1 mg / kg and wheat allergen content is low Less than 10ppm, safe and reliable

Method used

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  • Cadmium-eliminated desensitized rice protein, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Cadmium removal treatment

[0046] Mix rice dregs (commercially available, produced by Jiangsu Meimeiyuan Biotechnology Co., Ltd.) and citric acid solution with pH=2.5 in proportion, and perform cadmium removal treatment at a stirring speed of 100 rpm. The specific parameters are shown in Table 1;

[0047] (2) Desensitization treatment

[0048] The rice dregs treated in step (1) were mixed with acetone aqueous solution, and the desensitization treatment was carried out at a stirring speed of 100 rpm. The specific parameters are shown in Table 2.

[0049] (3) Post-processing

[0050] Vacuum filter the product obtained in step (2) (vacuum degree is -0.05MPa, filter mesh size is 50-100 mesh) except for protein components, wash with water, dry (temperature is 60°C, time is 3h), and sterilize (temperature at 80°C for 3 hours), and crushed to 200-1000 mesh to obtain desensitized rice protein with a cadmium content of less than 0.1 mg / kg and a wheat allergen content of l...

Embodiment 2

[0052] (1) Cadmium removal treatment

[0053] Mix rice dregs (commercially available, produced by Jiangxi Magu Industrial Group Co., Ltd.) with food-grade acetic acid solution with pH=3 in proportion, and perform cadmium removal treatment at a stirring speed of 800 rpm. The specific parameters are shown in Table 1;

[0054] (2) Desensitization treatment

[0055] The rice dregs treated in step (1) were mixed with food-grade ethanol aqueous solution, and the desensitization treatment was carried out at a stirring speed of 800 rpm. The specific parameters are shown in Table 2.

[0056] (3) Post-processing

[0057] Vacuum filter the product obtained in step (2) (vacuum degree is -0.08MPa, filter mesh size is 50-100 mesh) except for protein components, wash with water, dry (at a temperature of 90°C for 2 hours), and sterilize (at a temperature of at 85°C for 2 hours), and crushed to 200-1000 mesh to obtain desensitized rice protein with a cadmium content of less than 0.1 mg / kg an...

Embodiment 3

[0059] (1) Cadmium removal treatment

[0060] Mix rice dregs (commercially available, produced by Jiangsu Meimeiyuan Biotechnology Co., Ltd.) and malic acid solution with pH=3.5 in proportion, and perform cadmium removal treatment at a stirring speed of 700 rpm. The specific parameters are shown in Table 1;

[0061] (2) Desensitization treatment

[0062] The rice dregs treated in step (1) were mixed with isopropanol aqueous solution, and the desensitization treatment was carried out at a stirring speed of 700 rpm. The specific parameters are shown in Table 2.

[0063] (3) Post-processing

[0064] Filter the product obtained in step (2) by pressure filtration (pressure 0.15MPa, filter mesh 50-100 mesh) except protein components, wash with water, dry (temperature 70°C, time 2h), sterilize (temperature 80 °C, time 2h), crushed to 200-1000 mesh to obtain desensitized rice protein with cadmium content less than 0.1mg / kg and wheat allergen content less than 10ppm.

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Abstract

The invention discloses a cadmium-eliminated desensitized rice protein and a preparation method and application thereof. The objective of the invention is to overcome the problems that the content of cadmium in conventional rice protein is too high and wheat allergens in the conventional rice protein exceed standards. The cadmium-eliminated desensitized rice protein provided by the invention is prepared by eliminating cadmium in a rice residue by using an acid solution, then desensitizing the rice residue with an aqueous solution of an organic solvent and finally processing the cadmium-eliminated desensitized rice residue; and the cadmium-eliminated desensitized rice protein contains less than 0.1 mg / kg of cadmium and less than 10 ppm of wheat allergens. According to the invention, the preparation method has the advantages of simple operation, low cost, capacity of safely and effectively obtaining the rice protein with low content of cadmium and wheat allergens and suitability for large scale popularization and application; the removal rate of cadmium is more than 90%, and the removal rate of the wheat allergens approaches 100%.

Description

technical field [0001] The invention relates to the technical field of rice deep processing, in particular to a decadmium-desensitized rice protein and a preparation method and application thereof. Background technique [0002] The quality of rice protein is recognized as the best among cereal proteins. It is rich in essential amino acids, the content of the first limiting amino acid lysine is higher than that of other cereals, and the amino acid composition mode is close to the WTO / FAO recommended mode. It is easy to be digested and absorbed by the human body. Compared with other cereal proteins, the biological value (BV) and protein utilization rate (PER) of rice protein are higher, and the biological value can be as high as 77%. As a deep-processed product of rice, rice protein not only solves the problem of reusing rice dregs, a by-product of rice, but also provides a high-quality protein resource for the food industry. [0003] However, due to the high conversion coef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23J1/12A23L1/30
Inventor 黄武宁肖静宗金萍陈开平
Owner 义乌市海之纳生物工程有限公司