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Comprehensive method for drying rosebuds through microwave vacuum and heated air circulation

A technology of microwave vacuum drying and hot air circulation drying, which is applied in the fields of botany equipment and methods, food drying, and preservation of food ingredients as anti-microbials, etc., to save time and production costs, overcome high temperature, and achieve consistent dryness.

Active Publication Date: 2014-01-15
银谷芳香科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of existing rosebud drying methods and provide a comprehensive drying method for rosebuds with short heating time and uniform drying.

Method used

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  • Comprehensive method for drying rosebuds through microwave vacuum and heated air circulation
  • Comprehensive method for drying rosebuds through microwave vacuum and heated air circulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) When selecting fresh rosebuds, choose fresh rosebuds whose calyx is open and whose outermost petals have just turned outward;

[0023] (2) Place the selected rose buds in separate plates, and the thickness of each plate shall not exceed 5 cm;

[0024] (3) Send the rosebuds in step (2) into a hot air circulation dryer, dry them at 30-45°C for 8 hours, and take them out;

[0025] (4) Put the rose buds obtained in step (3) into a microwave vacuum dryer, and dry them for 3.7 hours at a vacuum degree of -0.065MPa~-0.075MPa and a temperature of 32-62°C; 32-40 At ℃, every 15 minutes of drying, the temperature increases by 2°C; at 40-61°C, every 15 minutes of drying, the temperature increases by 3°C; at 62°C, dry for 42 minutes, hand pinch the flower pedicles into powder, after drying, take out;

[0026] (5) Vacuum-pack the rosebuds dried in step (4) and store them away from light. The obtained dried rose buds have a light purple-red appearance, and only 0.4% of the flowe...

Embodiment 2

[0028] (1) When selecting fresh rosebuds, choose fresh rosebuds whose calyx is open and whose outermost petals have just turned outward;

[0029] (2) Place the selected rose buds in separate plates, and the thickness of each plate shall not exceed 5 cm;

[0030] (3) Send the rosebuds in step (2) into a hot air circulation dryer, dry them at 30-45°C for 7 hours, and take them out;

[0031] (4) Put the rose buds obtained in step (3) into a microwave vacuum dryer, and dry for 1 hour at a vacuum degree of -0.065MPa~-0.075MPa and a temperature of 32-40°C; the temperature is 40-61 ℃, dry for 1.5 hours; when the temperature is 62 ℃, dry for 40 minutes, after drying, take out;

[0032] (5) Vacuum-pack the rosebuds dried in step (4) and store them away from light. The appearance of the dried rose buds obtained is light purple, and only 4% of the flower centers are yellow in color through random inspection, and the color of the rest of the flowers is basically the same as that of the ...

Embodiment 3

[0034] (1) When selecting fresh rosebuds, choose fresh rosebuds whose calyx is open and whose outermost petals have just turned outward;

[0035] (2) Place the selected rose buds in separate plates, and the thickness of each plate of rose buds shall not exceed 5 cm;

[0036] (3) Send the rosebuds in step (2) into a hot air circulation dryer, dry them at 30-45°C for 7.5 hours, and take them out;

[0037] (4) Put the rosebuds obtained in step (3) into a microwave vacuum dryer, and dry them for 4.5 hours at a vacuum degree of -0.065MPa~-0.075MPa and a temperature of 32-62°C; after drying, take out;

[0038] (5) Vacuum-pack the rosebuds dried in step (4) and store them away from light. The appearance of the dried rose buds obtained is deep purple, and only 2% of the flower centers are yellow in color through random inspection, and the color of the remaining flower centers is basically the same as that of the outer petals.

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Abstract

The invention discloses a method for drying rosebuds and belongs to the technical field of rosebud drying through microwave vacuum and heated air circulation. A comprehensive method for drying rosebuds through microwave vacuum and heated air circulation comprises the following steps: (1) feeding the rosebuds to a heated air circulation dryer for drying; (2) feeding the rosebuds obtained in the step (1) to a microwave vacuum drier for drying. According to the comprehensive method, the temperatures are low during the drying processes, the drying time is short, the product quality is high, meanwhile energy consumption is lowered, and the production efficiency is improved. Besides, microwaves can effectively sterilize the rosebuds and kill worms' eggs attached to the rosebuds, and are beneficial for prolonging product shelf lives.

Description

technical field [0001] The invention discloses a method for drying rosebuds, which belongs to the technical field of comprehensively drying rosebuds by microwave vacuum and hot air circulation. Background technique [0002] Rose buds have the effects of regulating qi and relieving depression, promoting blood circulation and dispelling blood stasis, regulating menstruation and relieving pain, and softening heart and brain vessels. There is a fixed time for picking rose buds, but rose buds are not easy to store for a long time after picking, and must be processed in time, otherwise it will affect its quality and efficacy, and even cause deterioration. Therefore, rose buds are generally stored after drying. [0003] The traditional method of drying rose buds is the hot air circulation drying method, that is, putting the rose buds into a hot air circulation dryer, passing hot air, and the hot air takes away the moisture in the rose buds to obtain dried rose buds; the method is s...

Claims

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Application Information

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IPC IPC(8): A23L3/40A23L3/54
CPCA01G5/00A23L3/40A23L3/54A23V2002/00A23V2300/10A23V2300/24A23V2200/10
Inventor 姚奕王建明颜勇王佳勇
Owner 银谷芳香科技有限公司
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