Method for removing cadmium in rice protein

A technology of rice protein and rice protein powder, which is applied in protein food processing, plant protein processing, protein food ingredients, etc., can solve the problems of excessive cadmium, harm to human health, environmental pollution, etc., and achieve the effect of reducing nutritional content

Inactive Publication Date: 2013-10-09
普洱永吉生物技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to environmental pollution, cadmium is often seriously exceeded in the rice protein prepa...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take rice protein powder, add hot water to adjust slurry, and mix well to obtain a slurry with a concentration of 12%; when the temperature of the slurry is 65°C, add citric acid solution accounting for 0.5% of the weight of the entire rice protein powder to adjust the pH of the slurry to 4.0 , reacted for 4 hours, then stirred evenly, added a sodium hydroxide solution with a concentration of 10% to adjust the pH to 5.8, and reacted for 0.5 hours; then use a cyclone device to remove impurities, wherein the concentration of the feed liquid is 9%, and the feed amount is 6.0m 3 / h, water inflow is 1.0m 3 / h. Then adjust the concentration of the slurry after removal of impurities to 13%, and perform high-temperature sterilization at a temperature of 120° C., and the sterilization time is 4 seconds. Dehydration is carried out by plate and frame dehydration, wherein the feeding frequency is 42Hz and the pressure is 0.55MPa. Drying is carried out by airflow drying, wherein ...

Embodiment 2

[0024] Take rice protein powder, add hot water to adjust slurry, and mix well to obtain a slurry with a concentration of 13%; when the temperature of the slurry is 60°C, add citric acid solution accounting for 0.5% of the weight of the entire rice protein powder to adjust the pH of the slurry to 3.8 , reacted for 4 hours, then stirred evenly, added a sodium hydroxide solution with a concentration of 10% to adjust the pH to 6.2, and reacted for 0.5 hours; then use a swirl device to remove impurities, wherein the concentration of the feed liquid is 9%, and the feed amount is 6.0m 3 / h, water inflow is 1.0m 3 / h.

[0025] Then adjust the concentration of the slurry after removal of impurities to 12%, and carry out high-temperature sterilization at a temperature of 120° C., and the sterilization time is 4 seconds. Dehydration is carried out by plate and frame dehydration, wherein the feeding frequency is 42Hz and the pressure is 0.45MPa. Drying is carried out by airflow drying,...

Embodiment 3

[0028] Take rice protein powder, add hot water to adjust slurry, and mix well to obtain a slurry with a concentration of 13%; when the temperature of the slurry is 62°C, add citric acid solution accounting for 0.5% of the weight of the entire rice protein powder to adjust the pH of the slurry to 4.0 , reacted for 4 hours, then stirred evenly, added a sodium hydroxide solution with a concentration of 10% to adjust the pH to 6.0, and reacted for 0.5 hours; then use a swirl device to remove impurities, wherein the concentration of the feed liquid is 9%, and the feed amount is 6.0m 3 / h, water inflow is 1.0m 3 / h.

[0029] Then adjust the concentration of the slurry after removal of impurities to 13%, and perform high-temperature sterilization at a temperature of 120° C., and the sterilization time is 4 seconds. Dehydration was carried out by plate and frame dehydration, wherein the feeding frequency was 42Hz and the pressure was 0.50MPa. Drying is carried out by airflow drying...

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PUM

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Abstract

The invention relates to a method for removing cadmium in rice protein, belonging to the technical field of further processing for rice. The method comprises the following steps of: taking rice protein powder, adding hot water for size mixing, uniformly mixing, and obtaining size with the concentration being 12-13 percent; and conducting an acid hydrolysis reaction, removing impurities, sterilizing, dewatering, drying, and obtaining a rice protein powder finished-product. The method has the beneficial effects that the content of cadmium in the rice protein can be effectively reduced, the appearance of the rice protein cannot be influenced, and the nutritional ingredients in the rice protein cannon be reduced.

Description

technical field [0001] The invention belongs to the technical field of rice deep processing, and in particular relates to a method for removing cadmium from rice protein. Background technique [0002] Rice protein is a high-nutrition, hypoallergenic grain protein, which is very suitable for protein supplements for infants, the elderly and the sick. Generally, the content of rice protein in rice is about 7%, which is mainly composed of albumin, globulin, prolamin and gluten. [0003] Due to environmental pollution, cadmium is often seriously exceeded in the rice protein prepared from rice, and the cadmium content generally exceeds 1.0 mg / kg, seriously endangering human health. Cadmium is a highly toxic heavy metal. Chronic poisoning manifests as headache, fatigue, nasal mucosal atrophy, decreased lung respiratory function, renal function decline, stomach pain, etc. Acute poisoning manifests as nausea, vomiting, headache, abdominal pain and other symptoms. The body hinders a...

Claims

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Application Information

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IPC IPC(8): A23L1/305A23L1/015A23J3/14A23J3/32A23L33/185
Inventor 谭勇谭弘黄成英罗金波
Owner 普洱永吉生物技术有限责任公司
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