Method for ultrasonically crystallizing rebaudiosideA

An ultrasonic and crystallization technology, applied in chemical instruments and methods, preparation of sugar derivatives, sugar derivatives, etc., can solve problems such as difficult to repeat, undisclosed crystallization resting time, rebaudioside A yield, etc.

Inactive Publication Date: 2010-08-25
GANZHOU JULONG HIGH TECH INDAL
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is relatively simple, and key technical indicators such as crystallization rest

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Example 1

At room temperature, add 2000L of pre-prepared ethanol solution with 95% concentration in the crystallization tank, add 250Kg according to the mass-volume ratio (Kg:L) 1:8 and the purity of 95% stevioside (rebaudioside A purity) 80%) powder, stir slowly while adding the powder, and turn on the ultrasonic generator and heating device with an ultrasonic power of 1500W and a frequency of 36KHz. The powder will be added uniformly within 20 minutes, and the ultrasonic will be stopped when the addition is completed, and the temperature will be raised to 75°C , Constant temperature for 90 minutes; start the cooling device, cool the solution to 20°C at a rate of 15°C per minute, stand for crystallization for 7 hours, stop the ultrasonic when stirring is stopped; solidify the obtained crystal and solution with a plate and frame filter press Liquid separation, the obtained crystals were washed twice with a 95% ethanol solution, 250L each time, and the purity of crystal rebaudio...

Example Embodiment

Example 2

At room temperature, add 2000L of pre-prepared ethanol solution with 95% concentration in the crystallization tank, add 250Kg according to the mass-volume ratio (Kg:L) 1:8 and the purity of 95% stevioside (rebaudioside A purity) 80%) powder, stir slowly while adding the powder, and turn on the ultrasonic generator and heating device with an ultrasonic power of 1500W and a frequency of 36KHz. The powder will be added uniformly within 20 minutes, and the ultrasonic will be stopped when the addition is completed, and the temperature will be raised to 75°C , Constant temperature for 90 minutes; start the cooling device, cool the solution to 20°C at a rate of 15°C per minute, stand for crystallization for 7 hours, stop the ultrasonic when stirring is stopped; solidify the obtained crystal and solution with a plate and frame filter press Liquid separation, the obtained crystals were washed twice with a 95% ethanol solution, 250L each time, and the purity of crystal rebaudio...

Example Embodiment

Example 3

At room temperature, add 2000L of pre-prepared ethanol solution with 95% concentration in the crystallization tank, add 250Kg according to the mass-volume ratio (Kg:L) 1:8 and the purity of 95% stevioside (rebaudioside A purity) 80%) powder, stir slowly while adding the powder, and turn on the ultrasonic generator and heating device with an ultrasonic power of 1500W and a frequency of 36KHz. The powder will be added uniformly within 20 minutes, and the ultrasonic will be stopped when the addition is completed, and the temperature will be raised to 75°C , Constant temperature for 90 minutes; start the cooling device, cool the solution to 20°C at a rate of 15°C per minute, stand for crystallization for 7 hours, stop the ultrasonic when stirring is stopped; solidify the obtained crystal and solution with a plate and frame filter press Liquid separation, the obtained crystals were washed twice with a 95% ethanol solution, 250L each time, and the purity of crystal rebaudio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for ultrasonically crystallizing rebaudiosideA, which comprises the following steps of: charging stevioside and dissolvent according to the quality volume ratio (kg:L) of 1:4-10; stirring, charging and heating to be the temperature of 40-80 DEG C; constantly keeping the temperature at 30-90 minutes; fast reducing the temperature to be 10-25 DEG C with the velocity of 5-15 DEG C per minute; sequentially statically crystallizing and recrystallizing for 3-12 hours, wherein the ultrasonic wave is adopted to perform auxiliary crystallizing and recrystallizing during statically putting; stirring and performing the ultrasonic wave for 5-15 minutes every 30-90 minutes; and performing solid-liquid separation, dissolution in a washing way, membrane separation, reduced pressure distillation and spray drying to the recrystallized crystalloid to obtain the high-purity rebaudiosideA. The method has the crystallizing time of only 6-24 hours, the rebaudiosideA yield which is more than 75%, even crystallizing grains, and the rebaudiosideA purity which reaches up to be more than 95%, meets the standards of American FDA, can be produced on a large scale, and has obvious effect.

Description

A method for ultrasonic crystallization of rebaudioside A technical field The invention relates to a method for separating rebaudioside A from stevioside, in particular to a method for ultrasonically crystallizing rebaudioside A. technical background Stevioside, also known as steviol glycoside, commonly known as stevioside, is a kind of pure natural, high sweetness, low calorie value, edible safety food additive extracted from the leaves of stevia rebaudiana. The third natural sugar source after beet sugar, its sweetness is 200-350 times that of sucrose, but its calories are only 1 / 300 of sucrose. Stevioside is resistant to acid and alkali, good thermal stability, non-fermentative, can be kept in the solution of pH 3-9 for a long time, and does not decompose at up to 200°C, and can be widely used in food, beverage, wine making, medicine, flavor Spices, etc. are used in almost all sugar fields. Stevioside has low calorific value and is safe to eat. It has a certain auxili...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07H15/256C07H1/08
Inventor 孙景文谷瑞华杨尽伟谭燕赵红华
Owner GANZHOU JULONG HIGH TECH INDAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap