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Combined drying method for improving dehydration efficiency of maize

A combined drying and corn technology, which is applied in the storage and processing of grain and the production of dehydrated grain, can solve the problems of loss of heat-sensitive nutrients, severe deformation of tissue structure, and high temperature of drying medium, so as to shorten drying time, lower drying temperature, overcome The effect of a large crack rate

Inactive Publication Date: 2010-08-18
JILIN UNIV
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Problems solved by technology

[0002] Atmospheric pressure hot air drying using hot air as the medium for convective heat transfer is still the most widely used and most economical grain dehydration storage method, but due to the long drying time, low efficiency, high temperature of the drying medium, and migration of soluble substances, the dried Grain has some disadvantages such as poor quality, serious loss of heat-sensitive nutrients or active ingredients such as vitamins, high crack rate, and severe structural deformation.

Method used

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Embodiment Construction

[0026] The specific content and implementation of the present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0027] The invention combines hot air drying and microwave drying (AMVD), and determines the combined drying process by inspecting the degree of denaturation of northeast corn in the dehydration stage through sensory index observation and physical and chemical indexes.

[0028] AMVD is to divide the entire drying process into two stages: first, the sample is dried with hot air to a certain moisture content, and then the sample is then microwave-dried to the final product. The specific process route is as follows:

[0029] Raw material selection → hot air drying to moisture conversion point → microwave drying to final moisture content → selection → impurity removal → packaging → storage

[0030] The present invention adopts a stage-by-stage joint drying method to improve the cost performance of dehydra...

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Abstract

The invention relates to a crop drying technology, in particular to a combined drying method for improving the dehydration efficiency of maize, which aims at solving the problems of long drying time, low drying efficiency, serious pollution and the like in the prior drying technology. The drying technology consists of two / three stages, in the front stage, a hot air / microwave drying is adopted and changed into microwave drying to the end point when drying to certain water content. The equipment used by a drying technology is a hot air dryer and a microwave oven; and by using the heating characteristic of microwave, the invention solves the problems of long drying time of crops, low drying efficiency, serious pollution and the like in the prior drying technology.

Description

technical field [0001] A combined drying method for improving corn dehydration efficiency, the invention belongs to the technical field of grain food processing, relates to grain storage and processing, and is mainly used for the production of dehydrated grain. Background technique [0002] Atmospheric pressure hot air drying using hot air as the medium for convective heat transfer is still the most widely used and most economical grain dehydration storage method, but due to the long drying time, low efficiency, high temperature of the drying medium, and migration of soluble substances, the dried Grain has the disadvantages of poor quality, serious loss of heat-sensitive nutrients or active ingredients such as vitamins, high crack rate, and severe deformation of tissue structure. [0003] With a wavelength of 1mm to 1m and a frequency of 3.0×10 2 ~3.0×10 5 The MHz electromagnetic wave radiates the material, generates heat inside the material, and promotes the atmospheric p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B9/08
Inventor 贾洪雷徐艳阳刘春喜刘景圣谭宏杰赵文罡李冠南庄维林蔡森森
Owner JILIN UNIV
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