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Method for passivating lipoxygenase in beans

A technology of lipoxygenase and beans, which is applied in the field of food processing, can solve the problems of long processing time in the heating process, reduced nutrition of beans, high water and energy consumption, etc., so as to reduce nutrient loss and quality decline, reduce water consumption, etc. The effect of energy consumption and good inactivation effect

Inactive Publication Date: 2019-02-12
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the dry heat inactivation enzyme method most commonly used in soybean processing has many drawbacks
The dry heat method is to treat the beans at a temperature between 110-170°C for 30 minutes, but the heating process takes a long time, consumes a lot of water and energy, and the nutrition of the beans is seriously reduced, and the quality is reduced

Method used

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  • Method for passivating lipoxygenase in beans

Examples

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Effect test

Embodiment 1

[0029] Application of radio frequency heat treatment device (recorded in the patent application for invention with publication number CN104782758A) to process soybeans, the specific steps are as follows:

[0030] (1) Pretreatment: select soybeans of the same variety, put them in a thermoplastic basket with good electrical insulation, and the thickness of the sample stack is 40mm (thickness is less than the distance between the plates);

[0031] (2) RF treatment: the thermoplastic basket is placed on the conveyor belt at the center of the pole plate under the radio frequency treatment chamber. The operating frequency of the radio frequency treatment device is 27.12MHz, the power is set to 1.8kW, the distance between the pole plates is 45mm, and the sample thickness is 40mm. The processing time is 260s, and the auxiliary temperature in the radio frequency processing chamber is controlled to be 55°C (the auxiliary temperature is provided by hot air ≥ 55°C, and an external hot air ...

Embodiment 2

[0036] Application of radio frequency heat treatment device (recorded in the patent application for invention with publication number CN104782758A) to process soybeans, the specific steps are as follows:

[0037] (1) Pretreatment: Select soybeans of the same variety and place them in thermoplastic baskets with good electrical insulation. The thickness of the samples is 90 mm (the thickness is smaller than the distance between the plates).

[0038] (2) RF treatment: the thermoplastic basket is placed on the conveyor belt at the center of the pole plate under the radio frequency treatment chamber. The operating frequency of the radio frequency treatment device is 27.12MHz, the power is set to 7.5kW, the distance between the pole plates is 120mm, and the sample thickness is 90mm. The processing time is 90s, and the auxiliary temperature in the radio frequency processing chamber is controlled to be 55°C (the auxiliary temperature is provided by hot air ≥ 55°C, and an external hot a...

Embodiment 3

[0043] Application of radio frequency heat treatment device (recorded in the patent application for invention with publication number CN104782758A) to process soybeans, the specific steps are as follows:

[0044] (1) Pretreatment: select soybeans of the same variety, put them in a thermoplastic basket with good electrical insulation, and the thickness of the sample stack is 60mm (thickness is less than the distance between the plates);

[0045](2) RF treatment: the thermoplastic basket is placed on the conveyor belt at the center of the pole plate under the radio frequency treatment chamber. The operating frequency of the radio frequency treatment device is 27.12MHz, the power is set to 5.0kW, the distance between the pole plates is 80mm, and the sample thickness is 60mm. The processing time is 175s, and the auxiliary temperature in the RF processing chamber is controlled to be 55°C (the auxiliary temperature is provided by hot air ≥ 55°C, and an external hot air generator can ...

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Abstract

The invention discloses a method for passivating lipoxygenase in beans, and belongs to the technical field of food processing. The method for passivating the lipoxygenase in beans provided by the invention has the advantages that the radio frequency is used for treating nutrition inhibition factors; 85 to 99 percent of activity of the lipoxygenase can be passivated; the activity of the lipoxygenase can be well reduced; the generation of beany flavor can be well prevented; meanwhile, the bean flavor loss can be reduced; the nutrition and the quality of the beans can be ensured.

Description

technical field [0001] The invention relates to a method for passivating lipoxygenase in beans, belonging to the technical field of food processing. Background technique [0002] Since the reform and opening up, my country's soybean industry has developed rapidly, and now it has become one of my country's important agricultural industries. The 68th session of the United Nations General Assembly announced that 2016 will be the International Year of Pulses. The International Year of Pulses will strengthen the connection between the entire food chain. Creating a unique opportunity to promote better utilization of soy protein and increase global production of soy, the soy industry plays an important role in promoting rural economic development and meeting the rising living standards of people. However, beans contain a large amount of lipoxygenase, and its existence has seriously affected the production and processing of beans. [0003] Lipoxygenase (LOX) exists in various plants...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L5/30
CPCA23L5/36
Inventor 赵伟蒋逸鸣杨瑞金颜文旭
Owner JIANGNAN UNIV
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