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Method for cleaning barbary wolfberry fruit

A technology of wolfberry and cleaning, applied in application, food processing, food science and other directions, can solve problems such as being unfavorable to ensure the quality of wolfberry, easy to change color, poor color control of wolfberry, etc., to eliminate surface hardening phenomenon, maintain color and luster, The effect of easy water quality control

Active Publication Date: 2013-03-20
INFINITUS (CHINA) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lycium barbarum is generally dried in the sun and hot air, but the color of wolfberry is not well controlled and easy to change color, which is not conducive to ensuring the quality of wolfberry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Spread the fresh wolfberry evenly on the mesh conveyor belt in the moving process with a thickness of about 3cm, and then pour the aqueous solution of sodium carbonate with a mass percentage concentration of 0.3% on the wolfberry from the upper part of the wolfberry, and the transmission speed is 3m / min; then the sodium carbonate aqueous solution gently showers the wolfberry from the upper part of the wolfberry under the natural action of gravity and then naturally flows into the sink at the lower part, and then rinses the wolfberry with tap water; the cleaned wolfberry is sent to the upper installation The air duct with multiple fans is used to dry the moisture on the surface of wolfberry; then the dried wolfberry on the surface is put into a low-temperature vacuum drying box for vacuum drying. The drying temperature is 40°C and the vacuum degree is 0.2MPa. After keeping it for 7 hours, the wolfberry can be dried: the moisture content of wolfberry is 13%, the red fruit...

Embodiment 2

[0026] Spread the fresh wolfberry evenly on the mesh conveyor belt in the moving process with a thickness of about 2cm, and then spray the wolfberry with 0.1% sodium carbonate aqueous solution from the upper part of the wolfberry at a transmission speed of 7m / min; then the sodium carbonate aqueous solution gently showers the wolfberry from the upper part of the wolfberry under the natural action of gravity and then naturally flows into the sink at the lower part, and then rinses the wolfberry with tap water; the cleaned wolfberry is sent to the upper installation The air duct with multiple fans is used to dry the moisture on the surface of the wolfberry; then the dried wolfberry on the surface is put into a low-temperature vacuum drying box for vacuum drying. After keeping it for 8 hours, the wolfberry can be dried: the moisture content of wolfberry is 12.5%, the red fruit rate of the product is 94%, the plumpness of wolfberry fruit is good, and the polysaccharide content is 1...

Embodiment 3

[0029] Spread the fresh wolfberry evenly on the mesh conveyor belt in the moving process with a thickness of about 4cm, and then spray the wolfberry with 0.5% sodium carbonate aqueous solution from the upper part of the wolfberry at a transmission speed of 10m / min; then the sodium carbonate aqueous solution gently showers the wolfberry from the upper part of the wolfberry under the natural action of gravity and then naturally flows into the sink at the lower part, and then rinses the wolfberry with tap water; the cleaned wolfberry is sent to the upper installation The air duct with multiple fans is used to dry the moisture on the surface of wolfberry; then the dried wolfberry on the surface is put into a low-temperature vacuum drying box for vacuum drying. After keeping it for 6 hours, the wolfberry can be dried: the moisture content of wolfberry reaches 11.8%, the red fruit rate of the product is 90%, the plumpness of wolfberry fruit is good, and the polysaccharide content is...

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PUM

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Abstract

The invention discloses a method for cleaning barbary wolfberry fruit. The method comprises the following steps of: spreading the barbary wolfberry fruit on a mesh screen conveying belt, flushing the barbary wolfberry fruit with sodium carbonate aqueous solution, and flushing with water to finish cleaning the barbary wolfberry fruit; and performing vacuum drying to avoid the phenomenon of surface hardening on the surface of the barbary wolfberry fruit which is easily caused by normal-pressure drying, In a normal-pressure hot air drying process, a fluid boundary layer is formed on the surface of barbary wolfberry fruit, heated and vaporized water vapor is diffused into the air through the fluid boundary layer, and internal moisture of the barbary wolfberry fruit moves towards the surface, wherein if the moving speed of the moisture is lower than the evaporating speed on the surface of the boundary layer, a water film on the boundary layer is broken, and a local crack phenomenon occurs on the surface of the barbary wolfberry fruit and expands to the entire outer surface, so that surface hardening is formed. During vacuum drying, the internal and external temperature gradient of barbary wolfberry fruit is small, and solvent water moves independently under the reverse osmosis action, so that the dissipation of active ingredients in barbary wolfberry fruit is reduced.

Description

technical field [0001] The invention relates to a method for cleaning medlar. Background technique [0002] Before the fresh wolfberry is picked and dried, the dust, wax, pesticides and other impurities remaining on the surface of the wolfberry should be cleaned with an aqueous solution of sodium carbonate with a mass concentration of 0.1-0.5%. Specific method: Pour fresh wolfberry into a vat or pool filled with sodium carbonate aqueous solution, roll it up and down several times and then take it out and dry it naturally. This is easy to break the skin of fresh wolfberry, and the sodium carbonate aqueous solution will be polluted quickly It is inconvenient to replace, which is not conducive to stabilizing the quality of wolfberry cleaning. It can be seen that the chaos in the existing processing industry poses a threat to food safety. [0003] Lycium barbarum is generally dried in the sun and hot air, but the color of wolfberry is not well controlled and easy to change col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23N12/06
Inventor 秦垂新罗江清姚松君郭爱玲郑志娟石风雷孙君社郑志安张秀清
Owner INFINITUS (CHINA) CO LTD
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