Storing method of Stevia rebaudiana leaves

A technology of stevia and leaves is applied in the field of storage of stevia leaves, can solve the problems of increasing storage cost, not comprehensive value, affecting green environmental protection and the like, and achieves the effects of low cost, high environmental friendliness, and convenient storage and operation.

Inactive Publication Date: 2017-04-26
MINGGUANG DAQUAN STEVIA PROFESSIONAL COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the traditional storage process, chemicals such as preservatives and desiccants are generally used. Although the storage status of stevia leaves has been improved to a certain extent, the use of too many chemical substances has not only increased storage costs, but also affected the green color during storage. Environmental protection is not the storage method with the highest comprehensive value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for storing stevia leaves, comprising the following steps,

[0019] 1) When 1% of the plants are budding, choose the morning or evening when the continuous sunny days are the main choice for harvesting. When harvesting, each plant retains a thin branch with leaves;

[0020] 2) After harvesting, send it directly to the drying yard for drying, and then gently tap it with a wooden stick until all the leaves fall off and remove the branches;

[0021] 3) The dried stevia leaves were irradiated with ultraviolet light for 10 h, placed in a closed container, and ozone with a concentration of 10 ppm was passed through for 3 h;

[0022] 4) Separate the leaves with pests and diseased spots and impurities, and put the qualified stevia leaves into storage;

[0023] 5) Put the stevia leaves that have passed the inspection into the warehouse for storage. The temperature of the warehouse is controlled at 15°C and the humidity is controlled at 10%. They are stored in woven bag...

Embodiment 2

[0025] A method for storing stevia leaves, comprising the following steps,

[0026] 1) When 2% of the plants are budding, harvest in the morning or evening with continuous sunny days. When harvesting, keep a thin branch with leaves on each plant;

[0027] 2) After harvesting, send it directly to the drying yard for drying, and then gently tap it with a wooden stick until all the leaves fall off and remove the branches;

[0028] 3) The dried stevia leaves were irradiated with ultraviolet light for 15 h, placed in a closed container, and ozone with a concentration of 15 ppm was passed through for 4 h;

[0029] 4) Separate the leaves with pests and diseased spots and impurities, and put the qualified stevia leaves into storage;

[0030] 5) Put the stevia leaves that have passed the inspection into the warehouse for storage. The temperature of the warehouse is controlled at 18°C ​​and the humidity is controlled at 13%. They are stored in woven bags in separate stacks, and each st...

Embodiment 3

[0032] A method for storing stevia leaves, comprising the following steps,

[0033] 1) When 2% of the plants are budding, harvest in the morning or evening with continuous sunny days. When harvesting, keep a thin branch with leaves on each plant;

[0034] 2) After harvesting, send it directly to the drying yard for drying, and then gently tap it with a wooden stick until all the leaves fall off and remove the branches;

[0035] 3) The dried stevia leaves were irradiated with ultraviolet rays for 20 h, placed in a closed container, and ozone with a concentration of 20 ppm was passed through for 5 h;

[0036] 4) Separate the leaves with pests and diseased spots and impurities, and put the qualified stevia leaves into storage;

[0037] 5) Put the stevia leaves that have passed the inspection into the warehouse for storage. The temperature of the warehouse is controlled at 20°C and the humidity is controlled at 15%. They are stored in woven bags in separate stacks, and each stack...

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PUM

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Abstract

The invention belongs to the technical field of plant cultivation, and concretely relates to a storing method of Stevia rebaudiana leaves. The method comprises the following steps: (1) when 1-2% of a plant emerges flower buds, the plants are harvested in morning or at night during continuous sunny days, and during harvest, each plant keeps a fine branch with leaves; (2) after harvesting, the plants are directly sent to a sunning ground for drying, sticks are used for slightly beating, and branches are removed; (3) dried Stevia rebaudiana leaves are irradiated with ultraviolet ray for 10-20 hours, the leaves are placed in an enclosed container, and ozone whose concentration is 10-20 ppm is introduced for 3-5 hours; (4) leaves with insect pests and disease spots as well as impurities are separated, qualified Stevia rebaudiana leaves are put in storage; (5) Stevia rebaudiana leaves which pass the examination are put into the storage for storing, the temperature of the storage is controlled at 15-20 DEG C, the humidity is controlled at 10-15%, woven bags are used for piling up and storing, land occupation of each stack is 3-5 m<2>, and the distance between each stack is 30-50 cm. The storing method does not need any chemical medicines with convenient storing operation, low cost and high environmental friendliness.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and in particular relates to a method for storing stevia leaves. Background technique [0002] Stevia is an herb of Compositae, native to Paraguay. It was successfully introduced and cultivated in my country in the early 1980s. The sweetness of steviol glycosides in its leaves is more than 300 times that of sucrose. It is known as the most valuable and promising new healthy sugar. source. [0003] In the traditional storage process, chemicals such as preservatives and desiccants are generally used. Although the storage status of stevia leaves has been improved to a certain extent, the use of too many chemical substances has not only increased storage costs, but also affected the green color during storage. Environmental protection is not the storage method with the highest comprehensive value. Contents of the invention [0004] The object of the present invention is to provide a meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/28A23L3/3409A23L3/40A01F25/00
CPCA01F25/00A23L3/28A23L3/3409A23L3/40
Inventor 贾德军
Owner MINGGUANG DAQUAN STEVIA PROFESSIONAL COOP
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