Crude extraction technology of stevioside of stevia rebaudiana

A stevia and crude extraction technology, applied in the directions of sugar derivatives, sugar derivatives, sugar derivatives preparation, etc., can solve the problems that cannot well meet the needs of modern steviol glycosides, the cleanliness of the extract is poor, and the stevia sugar problems such as large loss of glycosides, to achieve the effect of convenient subsequent processing, low cost of use and high cleanliness

Inactive Publication Date: 2015-08-12
HENGSHUI LIDE GREEN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are several shortcomings in this kind of crude extraction process, specifically, the extract prepared by it has poor cleanliness, while the extraction efficiency is low, and the loss of steviol glycosides is relatively large
Can not well meet the actual use needs of modern steviosides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The present invention comprises the following steps:

[0019] Step 1: Cut off the leaves of Stevia rebaudiana and chop the cut leaves;

[0020] Step 2: mix water and citric acid, configure a citric acid solution with a mass percentage of 0.35%, and pour the configured citric acid solution into the container;

[0021] Step 3: At a room temperature of 10°C, soak the cut stevia leaves in the citric acid solution prepared in step 2 and use manual stirring to mix the stevia leaves with the citric acid solution evenly, and soak for 15 minutes. then collect the liquid;

[0022] Step 4: Repeat the operation of Step 3 once, and concentrate the liquid collected in multiple operations;

[0023] Step 5: Filter the liquid with a filter with a mesh size of 1 cm to obtain a filtrate.

Embodiment 2

[0025] Step 1: Cut off the leaves of Stevia rebaudiana and chop the cut leaves;

[0026] Step 2: mix water and citric acid, configure a citric acid solution with a mass percentage of 0.35%, and pour the configured citric acid solution into the container;

[0027] Step 3: At a room temperature of 18°C, soak the cut stevia leaves in the citric acid solution prepared in step 2 and use manual stirring to mix the stevia leaves with the citric acid solution evenly, and soak for 18 minutes. then collect the liquid;

[0028] Step 4: Repeat the operation of Step 3 twice, and concentrate the liquid collected in multiple operations;

[0029] Step 5: Filter the liquid with a filter with a mesh size of 0.7 cm to obtain a filtrate.

Embodiment 3

[0031] Step 1: Cut off the leaves of Stevia rebaudiana and chop the cut leaves;

[0032] Step 2: mix water and citric acid, configure a citric acid solution with a mass percentage of 0.35%, and pour the configured citric acid solution into the container;

[0033] Step 3: At a room temperature of 28°C, soak the cut stevia leaves in the citric acid solution prepared in step 2 and use manual stirring to mix the stevia leaves with the citric acid solution evenly, and soak for 20 minutes. then collect the liquid;

[0034] Step 4: Repeat the operation of Step 3 twice, and concentrate the liquid collected in multiple operations;

[0035] Step 5: Filter the liquid with a filter with a mesh size of 0.3 cm to obtain a filtrate.

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PUM

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Abstract

The invention discloses a crude extraction technology of stevioside of stevia rebaudiana. The technology comprises the following steps: step one, cutting off leaves from stevia rebaudiana, and chopping the leaves; step two, mixing water and critic acid to prepare a critic acid solution with a mass percentage of 0.35%, and pouring the prepared critic acid solution into a container; step three, soaking the processed stevia rebaudiana leaves in the critic acid solution at a room temperature of 10 to 28 DEG C, stirring the solution by hands to evenly mixing the leaves and the critic acid solution, soaking for 15 to 20 minutes, and collecting the liquid; step four, repeating step three for one or two times, and merging the obtained liquids; step five, filtering the liquid by a filter screen to obtain the filtrate. Compared with the prior art, the provided crude extraction technology has the advantages that only critic acid is used to complete the crude extraction, the steps are simple, the cost is low, the extraction yield is high, moreover the obtained filtrate is clean, and the post treatment becomes easier.

Description

technical field [0001] The invention relates to a rough extraction process of sugar glycosides, in particular to a rough extraction process of stevioside of stevia rebaudiana. Background technique [0002] Stevia is a new sugar source plant. The leaves contain 6-12% steviol glycosides, and the fine product is white powder. It is a low-calorie, high-sweet natural sweetener, and is one of the raw materials for the food and pharmaceutical industries. [0003] To extract the steviol glycosides in stevia rebaudiana, it needs to go through three steps: rough extraction, flocculation and purification. Among them, the rough extraction is more critical. Specifically, due to the different rough extraction processes, the cleanliness of the extract and the quality of the extract The content of inulin is also different. Therefore, it determines the actual inulin that can be provided by a unit of stevia, and also determines the difficulty of later flocculation and purification processing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/256C07H1/08
CPCC07H15/256C07H1/08
Inventor 张军才
Owner HENGSHUI LIDE GREEN BIOTECH CO LTD
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