Method for removing aflatoxin in rice flour

A technology for aflatoxin and rice flour, applied in the application, food preparation, food science and other directions, can solve the problems of the final product flavor and quality damage, difficult to achieve the level of industrialized processing, etc., achieve high detoxification efficiency, reduce space obstacles, The effect of increasing the contact area

Active Publication Date: 2013-03-27
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The aflatoxin removal rate of the above-mentioned existing detoxification methods needs to be improved, and there are varying degrees of damage and influence on the flavor and quality of the final product, and it is difficult to reach the level of industrial processing

Method used

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  • Method for removing aflatoxin in rice flour
  • Method for removing aflatoxin in rice flour

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Pass the above-mentioned moldy rice flour sample through an 80-mesh sieve, take 2g and put it in a 500ml beaker, add 50ml of distilled water at a ratio of solid-liquid ratio (mass ratio) of 1:25, and mix well; add 1 mol of / L sodium hydroxide solution until the pH value is 8.0, and then put it in the MZG1500S microwave experiment instrument (Nanjing Huiyan Microwave System Engineering Co., Ltd.) for microwave heating, the microwave intensity is 300W, and the processing time is 1 min. Stir the above suspension continuously; cool the treated suspension to room temperature (about 24°C), centrifuge at 10°C for 10min at a speed of 8000rpm, recover the centrifuged precipitate, and take the centrifuged supernatant at the same time Filtrate to recover the precipitate; wash the recovered precipitate with distilled water three times, and freeze-dry to obtain aflatoxin-free rice flour.

Embodiment 2

[0025] Pass the above-mentioned moldy rice flour sample through a 90-mesh sieve, take 2g and put it in a 500ml beaker, add 100ml of distilled water at a ratio of 1:50 to the ratio of solid to liquid (mass ratio), and mix well; add 1 mol of / L sodium hydroxide solution until the pH value is 9.0, then place it in a MZG1500S microwave experiment instrument (Nanjing Huiyan Microwave System Engineering Co., Ltd.) for heating, the microwave intensity is 500W, and the processing time is 3 minutes. During the processing Stir the above suspension continuously; cool the treated suspension to room temperature (around 24°C), centrifuge at 10°C for 10 minutes at a speed of 8000rpm, recover the centrifuged precipitate, and filter the centrifuged supernatant , recovering the precipitate; washing the recovered precipitate three times with distilled water, and spray drying to obtain aflatoxin-free rice flour.

Embodiment 3

[0027] Pass the above-mentioned moldy rice flour sample through a 100-mesh sieve, take 2g and place it in a 500ml beaker, add 150ml of distilled water at a ratio of 1:75 to the ratio of solid to liquid (mass ratio), and mix well; add 1 mol of / L sodium hydroxide solution until the pH value is 10.0, then place it in a MZG1500S microwave experiment instrument (Nanjing Huiyan Microwave System Engineering Co., Ltd.) for heating, the microwave intensity is 600W, and the processing time is 5 minutes. During the processing Stir the above suspension continuously; cool the treated suspension to room temperature (around 24°C), centrifuge at 10°C for 10 minutes at a speed of 8000rpm, recover the centrifuged precipitate, and filter the centrifuged supernatant , recovering the precipitate; washing the recovered precipitate with distilled water for 4 times, and freeze-drying to obtain aflatoxin-free rice flour.

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Abstract

The invention provides a method for removing aflatoxin in rice flour. The method comprises the following steps: passing a rice flower sample containing aflatoxin through a 80-100-mesh sieve, and dissolving the rice flower in water; using alkali liquor to regulate the pH of the solution to alkaline; using microwave to heat up the solution, and cooling the heated solution to room temperature; and centrifuging and filtering the cooled solution to recycle precipitate; water-washing and drying the precipitate to obtain the rice flower containing aflatoxin, wherein the alkaline pH value is 8.0-12.0, the microwave treatment time is 1-9 minutes, and the microwave intensity is 300-900W. The method provided by the invention is simple to operate, has high detoxification efficiency, small influence to the taste and quality of the final product, and satisfies the requirements of industrial processing production.

Description

technical field [0001] The invention belongs to the field of food processing and preservation, and in particular relates to a method for removing aflatoxin from rice flour. Background technique [0002] my country is a major rice producer in the world. At present, my country's annual rice output has reached 195 million tons, accounting for 40% of the country's total grain output and 37% of the world's total rice output, ranking first in the world. Rice flour refers to the raw rice flour with small particles that is soaked and ground with rice as raw material. After further processing, it can be made into various rice flour products, such as rice cake (rice dough), rice flour noodles, and rice flour for baking. (Rice biscuits, rice cakes, rice bread, rice cookies, rice cakes, rice cakes, etc.), quick-frozen rice noodles, corrugated rice noodles, refined straight rice noodles, instant rice noodles, microwave rice noodles, micro-puffed rice noodles, river noodles, etc. The tex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/10A23L1/015A23L7/10A23L5/20
Inventor 陈正行王勇王韧王莉罗小虎
Owner JIANGNAN UNIV
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