Method for processing bee larva and bee pupae through microwave vacuum freezing drying

A technology of microwave vacuum and honeycomb, which is applied in the field of deep processing of bee pupae and honeycomb, can solve the problems of large thermal resistance, long duration, low drying rate, etc., achieve high thermal efficiency, shorten drying time, facilitate automatic control and continuous production Effect

Inactive Publication Date: 2012-03-14
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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AI Technical Summary

Problems solved by technology

The general vacuum freeze-drying process uses surface heating, which has large thermal resistance and low drying rate, so that the entire freeze-dry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Control the thickness of the honeycomb filling at about 3cm to 6cm. Put the raw materials into a plate and freeze in the refrigerator until the center temperature is -50°C to -25°C, and the pre-freezing time is about 2h to 5h.

[0013] The parameters of microwave vacuum freeze-drying are: the temperature of the cold trap is -60℃~-30℃, the initial absolute pressure in the sublimation stage is 30Pa~120Pa (absolute vacuum degree), the microwave power is 60W~300W, and after entering the analysis section, the absolute pressure is set at 80Pa~ 500Pa, the microwave power is set to 1000W-2000W, and the drying time is 13h-30h.

Embodiment 2

[0015] Put the fresh bee chrysalis into the charging tray after sorting, and the thickness is controlled at 3cm to 5cm. Put the raw materials into a plate and freeze them in the refrigerator until the center temperature is -40°C~-30°C. The pre-freezing time is about 4h-5h. When they are dried, they are put into the drying chamber of the freeze dryer and then further cooled under low pressure.

[0016] The parameters of microwave vacuum freeze-drying are: cold trap temperature is -50℃~-40℃, initial absolute pressure in sublimation stage is 30Pa~150Pa, microwave power is 60W~480W, after entering the analysis section, absolute pressure is set to 80Pa~500Pa, microwave power is set to It is 1500~3000W, the thickness of the material layer is 5cm, and the drying time is 15h~30h.

Embodiment 3

[0018] Beat the fresh bee chrysalis and put it on a plate. The thickness of the material is controlled at about 3cm to 5cm. Put the raw materials into a plate and freeze them in the refrigerator until the center temperature is -40°C to -30°C. The pre-freezing time is about 3h to 4h, and put them into the drying chamber of the freeze dryer for further cooling under vacuum.

[0019] The parameters of microwave vacuum freeze-drying are: cold trap temperature is -50℃~-40℃, the initial absolute pressure in the sublimation stage is 30pa~150Pa, the microwave power is 60W~360W, after entering the analysis section, the absolute pressure is set to 50Pa~400Pa, and the microwave power is set to It is 420~1500W, the material layer thickness is 5cm, and the drying time is 10h~15h.

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Abstract

The invention relates to a novel method for processing fresh bee larva and bee pupae through microwave vacuum freezing drying, which is mainly characterized in that the technology of adopting microwaves for providing heat required by the sublimation drying and the resolution drying in the vacuum freezing drying, adopting optical fiber/infrared rays for temperature measurement control and the like for carrying out deep processing on the bee larva and bee pupae. The technical processes comprise fresh bee larva and bee pupae pretreatment or pulping treatment, disc loading, pre-freezing, vacuum sublimation drying, vacuum resolution drying and the like, the ordinary vacuum freezing drying process generally adopts the surface heating, the heat resistance is great, and the drying speed rate is low, so the whole freeze drying process lasts for a long time, and the defects can be overcome when the microwave heating is used for providing the heat required by sublimation. The processing method has the advantages that nutrient contents of biological substances of the bee larva and the bee pupae and the like can be effectively preserved, and the shapes of the bee larva and the bee pupae can be perfectly maintained. The microwaves have the penetrating performance, the heat efficiency is high, the energy sources are saved, the processing speed is greatly accelerated, the drying time is shortened, and the efficiency is improved.

Description

technical field [0001] The invention relates to a novel microwave vacuum freeze-drying processing method for fresh bee embryos and bee pupae. It mainly uses microwaves to provide the heat required for sublimation drying and analytical drying in vacuum freeze-drying, and uses optical fiber / infrared to measure and control the temperature. Deep processing of bee embryos and bee pupae. Background technique [0002] Bee embryos are rich in nutrients, as well as various biologically active substances such as proteins, amino acids, chitin and biological hormones unique to the insect body itself. These substances can not only enhance various physiological functions of the human body and promote the metabolism of the human body, It also has special effects on anti-aging, beauty and beauty. It can make people's complexion ruddy and shiny, skin elastic, and present a kind of natural beauty. Bee chrysalis contains a variety of biologically active biological hormones, enzymes and other ...

Claims

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Application Information

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IPC IPC(8): A23L1/076A23L21/20
Inventor 平丽娟毛建卫方晟葛青黄俊
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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