Combined drying technique for cowpeas

A technology combining drying and process methods, applied in the fields of food preparation, food science, preservation of fruits/vegetables by dehydration, etc., can solve the problems such as the loss of nutrients in the role of dehydrated cowpeas, and save conventional energy, improve efficiency, and reduce energy consumption. Effect

Inactive Publication Date: 2015-04-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a combined drying process for cowpea horns, which has high drying efficiency, can overcome the defects caused by a single drying method for drying cowpea horns, and combine different drying methods Dry and process cowpea horns, so that the dehydrated cowpea horns have less discoloration and less loss of nutrients

Method used

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  • Combined drying technique for cowpeas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] First buy fresh "Jinong 901 cowpea" variety of cowpea from the market, such as figure 1 As shown, the combined drying process is as follows:

[0034] Pretreatment: Choose cowpea with uniform thickness, no rot and no rust spots, and tender green flesh. Put the beans in clean water to wash them, then remove the shoots and roots of the kidney beans, and cut the remaining part into 5-6mm columnar sections, the shape and size should be basically the same.

[0035] Color protection treatment: configure color protection solution, with citric acid purity ≥99.5%, relative molecular mass 210.14, anhydrous calcium chloride purity 96.0%, relative molecular mass 110.99, vitamin C molecular formula, purity 99.7%, relative molecular mass 176.13 It is color protectant. According to the ratio of 1:5 solid-liquid color protection solution, the concentration of color protection agent in the color protection solution is 0.5% citric acid, 0.5% calcium chloride, 0.2% vitamin C, and then the cut...

Embodiment 2

[0041] First buy fresh "Jinong 901 cowpea" variety of cowpea from the market, such as figure 1 As shown, the combined drying process is as follows:

[0042] Pretreatment: Choose cowpea with uniform thickness, no rot and no rust spots, and tender green flesh. Put the beans in clean water to wash them, then remove the shoots and roots of the kidney beans, and cut the remaining part into 5-6mm columnar sections, the shape and size should be basically the same.

[0043] Color protection treatment: configure color protection solution, with citric acid purity ≥99.5%, relative molecular mass 210.14, anhydrous calcium chloride purity 96.0%, relative molecular mass 110.99, vitamin C molecular formula, purity 99.7%, relative molecular mass 176.13 It is color protectant. According to the ratio of 1:5 solid-liquid color protection solution, the concentration of color protection agent in the color protection solution is 0.5% citric acid, 0.5% calcium chloride, 0.2% vitamin C, and then the cut...

Embodiment 3

[0049] First buy fresh "Jinong 901 cowpea" variety of cowpea from the market, such as figure 1 As shown, the combined drying process is as follows:

[0050] Pretreatment: Choose cowpea with uniform thickness, no rot and no rust spots, and tender green flesh. Put the beans in clean water to wash them, then remove the shoots and roots of the kidney beans, and cut the remaining part into 5-6mm columnar sections, the shape and size should be basically the same.

[0051] Color protection treatment: configure color protection solution, with citric acid purity ≥99.5%, relative molecular mass 210.14, anhydrous calcium chloride purity 96.0%, relative molecular mass 110.99, vitamin C molecular formula, purity 99.7%, relative molecular mass 176.13 It is color protectant. According to the ratio of 1:5 solid-liquid color protection solution, the concentration of color protection agent in the color protection solution is 0.5% citric acid, 0.5% calcium chloride, 0.2% vitamin C, and then the cut...

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Abstract

The invention discloses a combined drying technique for cowpeas. The combined drying technique comprises the following steps: cleaning cowpeas cutting up the clean cowpeas, soaking the cowpeas for color protection by using a color protecting solution; and then, cleaning, drying, performing vacuum-pumping, injecting a penetrating fluid, performing vacuum penetrating dehydrating on the penetrating fluid, re-cleaning, drying, drying with hot air and performing vacuum drying for drying. According to the combined drying technique for the cowpeas, disclosed by the invention, time is taken as a measuring standard for ending a color-protecting stage, time control is taken as a conversion standard between vacuum penetrating and dehydrating stage and a hot air drying stage, and the content of moisture of the cowpeas is taken s a measuring standard for ending a vacuum stage. The color protection, vacuum penetrating dehydrating, hot air drying and vacuum drying are applied, and the combined drying technique is used for drying the cowpeas, so that the drying time period is shortened while the quality of the dried cowpeas is guaranteed, and the drying efficiency is improved; through the combined drying technique, the energy consumption in the drying process is reduced and normal energy resources are saved.

Description

Technical field [0001] The invention relates to the technical field of cowpea drying processing, in particular to a combined drying process of cowpea. Background technique [0002] With the improvement of people's living standards, the requirements for the quality of dehydrated fruits and vegetables are also getting higher and higher. Because the moisture content of cowpea is generally more than 90%, it is easy to rot during transportation or storage. Therefore, it is necessary to treat cowpea. The corners are dried to achieve long-term storage and convenient transportation. The current drying process of cowpea beans is mostly a single hot air drying method. The dried cowpea beans cannot reach a low moisture content, and the energy consumption is large, and the quality cannot be guaranteed. [0003] The drying of cowpea is one of the important steps in the processing of cowpea production, and it is also one of the prerequisites to ensure the long-term storage of cowpea. Because of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/02A23L1/272A23L5/41
Inventor 董继先李靖袁越锦王博
Owner SHAANXI UNIV OF SCI & TECH
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