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Freeze-drying method for thitarodes larva

A technology of larvae and bat moths, which is applied in the field of food drying, can solve the problems of poor appearance quality, unfavorable development and utilization of precious insect resources, and deterioration of nutritional components, so as to achieve the effect of improving product image and value and good market development prospects

Active Publication Date: 2013-06-26
香格里拉市宜康宝生物科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

But the prior art is common heating and drying, and the worm body shrinks in size during the drying process, and the color becomes brownish yellow, and the appearance quality is relatively poor, and heating and drying is easy to make the nutrients contained in it go bad, and the existing drying method is not conducive to this. Exploitation and Utilization of Precious Insect Resources

Method used

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  • Freeze-drying method for thitarodes larva
  • Freeze-drying method for thitarodes larva

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Embodiment Construction

[0014] The present invention will be further described below in combination with specific embodiments.

[0015] 1. Pre-freezing

[0016] After fully washing the 3rd to 6th instar larvae and prepupa with clean water, 50 to 200 bat moth larvae are used as a group, and immediately placed in a square stainless steel tray with a length of 30 cm, a width of 20 cm, and a depth of 1.5 to 3 cm. , After quickly flattening, immediately put it in the freezer to freeze, the freezing temperature is -10~-20°C, and the freezing time is not less than 7 hours.

[0017] 2. Sublimation drying

[0018] Turn on the refrigerator and run it for several minutes in advance to reduce the temperature of the cold trap to below -50°C. Put the pre-frozen bat moth larvae quickly on the material tray equipped with the freeze dryer, and press 1000g~2000g wet weight / m 2 The amount of the freeze-dried area is filled with bat moth larvae in the material tray, and the bat moth larvae are evenly distributed in t...

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Abstract

The invention discloses a freeze-drying method for thitarodes larva. The freeze-drying method comprises the steps of pre-freezing, sublimation drying and resolving drying. The vacuum freeze-drying method is adopted to dry and machine thitarodes larva, the thitarodes larva is not deformed or changed in color, the nutritional ingredients contained in the thitarodes larva is not denatured in the machining process, dry thitarodes larva with vivid morphology is obtained, the defects that the body of the thitarodes larva is wizened and black in color when being dried by using the conventional drying technique are overcome, and the goods image and the value of a thitarodes larva dry product are improved, and good market development prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of food drying, in particular to a vacuum freeze-drying method for bat moth larvae. Background technique [0002] The larvae of the genus Thitarodes are the hosts of Cordyceps sinensis. They are rich in nutrients and are the material basis for the growth and development of Cordyceps sinensis. There is a saying in the place of origin that "one worm is worth five grasses". "Live Cordyceps", occasionally obtained when collecting Cordyceps sinensis in the wild, and dedicated it as a treasure to the elders. Bat moth larvae can be used as a high-level nutrient. Dry processing makes it easy to carry. But the prior art is common heating and drying, and the worm body shrinks in size during the drying process, and the color becomes brownish yellow, and the appearance quality is relatively poor, and heating and drying is easy to make the nutrients contained in it go bad, and the existing drying method is not conduciv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/44
Inventor 张灿明杨大荣阿金李遗鸿
Owner 香格里拉市宜康宝生物科技有限公司
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