Efficient process for producing stevioside

A production process, stevioside technology, applied in the field of high-efficiency stevioside production technology, can solve the problems of unqualified product quality indicators, large stevioside content loss, large sewage treatment volume, etc., and achieve long resin regeneration cycle and resin treatment volume Large, low-volume effects

Active Publication Date: 2018-02-23
CHENGUANG BIOTECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the drying process of stevia in the natural environment, it is very easy to mix a large amount of impurities such as branches, soil, sand and stones, packaging materials, etc., so that the extract contains a large amount of impur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Take 100kg of fresh stevia leaves that have not been dried in the sun. After testing, the stevioside content is 6.36%, and the water content is 50.8%. Extracted 4 times in the extractor at 160r / min, each time extracted for 1.5h, to obtain 436L extract;

[0024] (2) Add 6.25L 30°C mass fraction of 25% ferrous sulfate aqueous solution to the extract, adjust the pH value to 9.3 with 30°C mass fraction of 25% calcium hydroxide aqueous solution, stir and flocculate at 30°C for 30 minutes, filter through 500 mesh Obtain filtrate after cloth filtration;

[0025] (3) Adsorb the filtrate with macroporous adsorption resin DA201-H, and analyze it with ethanol aqueous solution with a volume fraction of 30%, to obtain a primary analysis solution;

[0026] (4) Concentrate the primary analysis solution at 58°C until the ethanol content is 15.3%, then pass through cation exchange resin D001 and anion exchange resin D941 in sequence for desalination and decolorization, and after an...

Embodiment 2

[0029] (1) Take 100kg of fresh stevia leaves that have not been dried in the sun. After testing, the stevioside content is 5.87%, and the water content is 50.6%. Extracted 4 times in an extractor at 160r / min, each time for 1.5h, to obtain 440L extract;

[0030] (2) Add 10L 30°C mass fraction of 25% ferrous sulfate aqueous solution to the extract, adjust the pH value to 9.2 with 30°C mass fraction of 25% calcium hydroxide aqueous solution, stir and flocculate at 30°C for 30min, filter cloth with 500 mesh Obtain filtrate after filtering;

[0031] (3) Adsorb the filtrate with macroporous adsorption resin DA201-H, and analyze it with ethanol aqueous solution with a volume fraction of 40%, to obtain a primary analysis solution;

[0032] (4) Concentrate the primary analysis solution at 60°C until the ethanol content is 15.8%, then pass through cation exchange resin D001 and anion exchange resin D762 in sequence for desalination and decolorization, and obtain the secondary analysis ...

Embodiment 3

[0035] (1) Take 100kg of fresh stevia leaves that have not been dried in the sun. After testing, the stevioside content is 6.20%, and the water content is 51.4%. Grind it with a ball mill to a paste of 200 mesh or finer, add 200L of 20℃ water, and spray Extracted 5 times in an extractor with a shower pressure of 0.3MPa, and extracted for 1.5 hours each time to obtain 1042L extract;

[0036] (2) Add 20L 31°C mass fraction of 25% ferrous chloride aqueous solution to the extract, adjust the pH value to 9.3 with 31°C mass fraction of 25% calcium hydroxide aqueous solution, stir and flocculate at 31°C for 30 minutes, filter with 500 mesh Obtain filtrate after cloth filtration;

[0037] (3) Adsorb the filtrate with macroporous adsorption resin DA201-H, and analyze it with ethanol aqueous solution with a volume fraction of 50%, to obtain a primary analysis solution;

[0038] (4) Concentrate the primary analysis solution at 57°C until the ethanol content is 15.0%, then pass through c...

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Abstract

The invention discloses an efficient process for producing stevioside, and belongs to the technical field of extraction of natural products. The process comprises the following steps of: (1) taking fresh leaves of stevia rebaudiana, grinding the fresh leaves of stevia rebaudiana into paste, and adding water into the paste for extraction to obtain an extract; (2) adding a flocculating agent into the extract, regulating the pH value to be alkaline, performing stirring for flocculation, and conducting filtration to obtain a filtrate; (3) performing adsorption on the filtrate by using macroporousadsorption resin, conducting desorption by using an alcohol solution to obtain a first desorption solution; (4) performing concentration on the first desorption solution, performing desalting and decolorization by enabling the concentrated first desorption solution to pass through cation exchange resin and anion exchange resin, and performing desorption to obtain a second desorption solution; and(5) performing concentration on the second desorption solution, and performing spray drying on the concentrated second desorption solution to obtain the stevioside product. According to the efficientprocess for producing stevioside, since the fresh leaves of stevia rebaudiana are adopted as a raw material, the loss of the content of stevioside during air drying can be reduced, and meanwhile introduction of impurities can be minimized; besides, the obtained product has high content of stevioside, high yield and good quality.

Description

technical field [0001] The invention belongs to the technical field of natural product extraction, and in particular relates to a high-efficiency production process of stevioside. Background technique [0002] Stevioside (glycoside) is a new type of natural sweetener extracted and refined from the herb Stevia rebaudiana of Compositae. It has the characteristics of high sweetness and low calorie. Sweetener, known internationally as "the third sugar source in the world", is widely used in food, beverage and other industries. [0003] The patent application with the application number CN201210336408 discloses a method of extracting and purifying steviol glycosides from stevia rebaudiana water extract by a series resin column method. Stevia rebaudiana water extract is obtained; the patent application with the application number WO2011113373A1 discloses an ultrasonic extraction method using crushed stevia rebaudiana dry leaves as a raw material. These methods all use stevia dry...

Claims

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Application Information

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IPC IPC(8): C07H15/256C07H1/08
CPCC07H1/08C07H15/256
Inventor 刘翠翠程远欣刘登帅谷晓红张青考
Owner CHENGUANG BIOTECH GRP CO LTD
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