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Process method for producing dulcoside B by secondary high-temperature cracking method

A process method and secondary high temperature technology, applied in the field of production of dulcoside B by pyrolysis method, can solve problems such as difficulty in mass production and popularization, limitation of raw material output and separation cost, and production of a large amount of hazardous waste reagents, etc., to achieve production process Environmentally friendly, easy to control, and the effect of improving the reaction conversion rate

Pending Publication Date: 2022-04-12
DONGTAI HIRYE BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If steviol dulcoside B is obtained through plant extraction, it is difficult to mass produce and promote its use due to the limitation of raw material yield and separation cost
[0004] Due to the extremely low content of dulcoside B (DB) in stevia leaves, the current preparation method is mainly obtained by chemical method alkali hydrolysis of steviol glycosides with similar structures such as rebaudioside C (RC), but the chemical hydrolysis method has Disadvantages such as extreme reaction conditions, large amounts of hazardous waste reagents, and high pressure on environmental protection

Method used

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  • Process method for producing dulcoside B by secondary high-temperature cracking method
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  • Process method for producing dulcoside B by secondary high-temperature cracking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Dissolution: Add 10L of purified water for every 1kg of rebaudioside C, and keep stirring after fully stirring;

[0040] (2) High temperature cracking for the first time: control the pressure to be 1.5MPa, gradually heat up the solution in step (1) to 125°C for the first cracking, and crack for 5.5 hours;

[0041] (3) Filtration: Cool the lysate after the first cracking to 26°C, and filter to obtain the filtrate and filter cake; in order to fully crystallize, the lysate is kept in a stirring state during the cooling process;

[0042] (4) Washing: wash the filter cake obtained after filtration with purified water at a temperature of 65° C., stop washing until the pH value of the eluate is 5.5, and obtain crude dulcoside B crude filter cake 1 and washing solution;

[0043] (5) The second high-temperature cracking: control the pressure to 1.5 MPa, combine the filtrate of step (3) and the washing solution of step (4), heat up to 135° C. for the second cracking, and the ...

Embodiment 2

[0048] (1) Dissolution: Add 12L of purified water for every 1kg of rebaudioside C, and keep stirring after fully stirring;

[0049](2) High-temperature pyrolysis for the first time: the control pressure is 1.2MPa, the lysate of step (1) is gradually heated up and cracked, and the method of gradient temperature rise is adopted. After the temperature of the lysate is raised to 110° C. ℃ for 1.5 hours gradient heating cracking method, gradually warming up to 130 ℃ for the first cracking, cracking 6 hours;

[0050] (3) Filtration: Cool the lysate after the first cracking to 30°C, and filter to obtain the filtrate and filter cake; in order to fully crystallize, the lysate is kept in a stirring state during the cooling process;

[0051] (4) Washing: wash the filter cake obtained after filtration with purified water at a temperature of 70° C., stop washing until the pH value of the eluate is 6, and obtain dulcoside B crude product filter cake 1 and washing solution;

[0052] (5) The...

Embodiment 3

[0057] (1) Dissolution: Add 14L of purified water for every 1kg of rebaudioside C, and keep stirring after fully stirring;

[0058] (2) High temperature cracking for the first time: the control pressure is 2MPa, the solution solution of step (1) adopts the method of gradually heating up and cracking, and adopts the method of gradient heating when the temperature of the cracking solution is raised to 105 ° C. Gradient temperature rise cracking method with heat preservation for 1 hour, gradually raise the temperature to 135°C for the first cracking, cracking for 5 hours;

[0059] (3) Filtration: Cool the lysate after the first cracking to 32°C, and filter to obtain the filtrate and filter cake; in order to fully crystallize, the lysate is kept in a stirring state during the cooling process;

[0060] (4) Washing: wash the filter cake obtained after filtration with purified water at a temperature of 75° C., stop washing until the pH value of the eluate is 6.5, and obtain crude dul...

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Abstract

The invention discloses a process method for producing dulcoside B by a secondary pyrolysis method, which comprises the following steps: (1) adding 2-15L of purified water into each 1kg of rebaudioside C, and fully stirring; (2) gradually heating the dissolving solution to 110-150 DEG C, and carrying out first cracking for at least 3 hours; (3) cooling the lysate to 20-40 DEG C, and filtering; (4) washing the filter cake with purified water at the temperature of 20-80 DEG C to obtain a crude product filter cake 1; (5) mixing the filtrate and the washing liquid, heating to 120-160 DEG C, and carrying out second cracking for at least 2 hours; (6) cooling the lysate to 20-40 DEG C, and filtering; (7) washing the filter cake with purified water at the temperature of 20-80 DEG C to obtain a crude product filter cake 2; and (8) dissolving the crude product filter cake 1 and the crude product filter cake 2, refining and purifying to obtain a dulcoside B refined product. The process is easier to control, the conversion rate is higher, and the raw material cost can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of organic synthesis, in particular to a process for producing dulcoside B by a pyrolysis method. Background technique [0002] Stevioside is a new type of natural sweetener extracted from stevia rebaudiana. It has the characteristics of high sweetness and low calorie. It is an ideal sweetener that can replace sucrose and is widely used in food, beverage, seasoning materials, brewing, medicine and other industries. However, rebaudioside C (RC), one of the main components of stevia glycosides, has a low sweetness factor and a natural aftertaste or grassy taste, which also limits its further use as a sugar substitute. [0003] Stevioside B (DB) is also one of the sweet components in steviol glycosides. The sweetness is close to that of rebaudioside C, but the bitterness is significantly weaker than the latter, so the taste of stevioside B is better than that of rebaudioside C. However, the content of dulcos...

Claims

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Application Information

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IPC IPC(8): C07H15/24C07H1/08
Inventor 朱理平何冬生马兆宁王术军
Owner DONGTAI HIRYE BIOTECH CO LTD
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