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Method for processing husked rice and stabilizing rice bran by combination of microwave, ultraviolet ray and high-voltage pulse electric field

A high-voltage pulsed electric field and combined treatment technology is applied in the direction of preserving seeds through radiation/electrical treatment, which can solve the problems of low productivity, high price of extruders, and greater influence of operating parameters and material parameters, and achieve a simple and hygienic process. , low production cost and high efficiency

Inactive Publication Date: 2008-11-12
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this stabilization method are that the price of the extruder is high, and the processing flexibility is small. At the same time, the extrusion operation process is greatly affected by the operating parameters of the extruder and the material parameters, and it is difficult to adjust to maximize the inactivation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 After paddy husking and before rice milling, the brown rice was treated with microwave, ultraviolet light and high-voltage pulsed electric field. The microwave frequency was 2450 MHz, and the action time was 6 minutes. The pulse mode was used, and the microwave pulse width was 30 s, and the interval was 30 s. The high-voltage pulse electric field strength is 2kV / cm, the pulse width is 200μs, and the action strength is 50,000 pulses. The ultraviolet wavelength is 254nm, and the action time is 10min. The brown rice is conveyed through the conveyor belt, the linear velocity of the conveyor belt is 0.5m / s, and the thickness of the material layer is 10cm.

Embodiment 2

[0022] Example 2 After paddy husking and before rice milling, the brown rice was treated with microwave, ultraviolet light and high-voltage pulsed electric field. The microwave frequency was 915 MHz, and the continuous action time was 2 minutes. The high-voltage pulse electric field strength is 85kV / cm, the pulse width is 10μs, and the action strength is 100,000 pulses. The ultraviolet wavelength is 365nm, and the action time is 20min. The brown rice is conveyed through the conveyor belt, the linear speed of the conveyor belt is 1m / s, and the thickness of the material layer is 20cm.

Embodiment 3

[0023] Example 3 After paddy husking and before rice milling, the brown rice was treated with microwave, ultraviolet light and high-voltage pulsed electric field. The microwave frequency was 915 MHz, and the continuous action time was 1.5 min. The high-voltage pulse electric field strength is 50kV / cm, the pulse width is 1ms, and the action strength is 3000 pulses. The ultraviolet wavelength is 254nm, and the action time is 8 minutes. The brown rice is conveyed through the conveyor belt, the linear speed of the conveyor belt is 2m / s, and the thickness of the material layer is 5cm.

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Abstract

The present invention relates to a combined processing method of milled rice by microwave, ultraviolet ray and high-voltage pulsed electric field to stabilize rice bran, which performs the combined process of microwave, ultraviolet ray and high-voltage pulsed electric field to the milled rice without pull after rice hulling, belonging to the field of agricultural products processing. The obtained milled rice with low or without lipase activity can be obtained or be further processed to produce rice bran, the obtained milled rice or rice bran has high fat stability. The processing method of the invention has high efficiency, simple and sanitary process and low manufacture cost.

Description

technical field [0001] The invention belongs to the field of agricultural product processing, and in particular relates to a method for jointly treating brown rice with microwaves, ultraviolet rays and high-voltage pulsed electric fields, thereby stabilizing rice bran. Background technique [0002] my country is the world's largest rice-producing country, with an annual output of about 198 million tons, accounting for 1 / 3 of the world's total output. Rice resources are very rich. Rice bran is a by-product of the brown rice whitening process, accounting for 5% to 7% of the weight of brown rice, and is composed of the peel, seed coat, aleurone layer and rice germ of brown rice. Fresh rice bran is yellow in color and has a clear fragrance of rice. Rice bran contains 12% to 16% protein, 12% to 23% fat, 8% to 10% crude fiber and 7% to 12% ash. It is also rich in vitamins and minerals, and at least 78% of the V of brown rice is concentrated. B1 , 47% of V B2 , 67% of V PP and ...

Claims

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Application Information

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IPC IPC(8): A23B9/06
Inventor 钱建亚
Owner YANGZHOU UNIV
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