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Ammonium sulfite method-based caramel colour production process

A technology of ammonium sulfite method and production process, applied in chemical instruments and methods, organic dyes, natural dyes, etc., can solve the problems of corrosiveness, animal growth tumors, carcinogenic risks, etc., and achieve good application effects

Active Publication Date: 2015-11-18
QIANHE CONDIMENT & FOOD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 4-Methylimidazole (abbreviated as 4-MI) is an important organic intermediate, mainly used in the synthesis of bulk stomach drug cimetidine; 4-Methylimidazole (4-Methylimidazole) is white to off-white crystalline powder, Soluble in water and ethanol, corrosive; 4-methylimidazole can cause tumors in animals, and may bring cancer risk to humans

Method used

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  • Ammonium sulfite method-based caramel colour production process
  • Ammonium sulfite method-based caramel colour production process
  • Ammonium sulfite method-based caramel colour production process

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Production of 36Be, 25000EBC ammonium sulfite method caramel color (EBC is the color rate unit of caramel color; Be refers to the Baume value of caramel color, and color rate and Baume are the measurement indicators of caramel color)

[0034] (1) Metering feed: 6000kg of maltose syrup with a DE value of 42% and a dry basis of 60% is metered into the reaction tank;

[0035] (2) Alkali addition: add an appropriate amount of sodium hydroxide to the maltose syrup that has been prepared to adjust the pH to 10.0;

[0036] (3) The first reaction: put the above-mentioned maltose syrup with adjusted PH value in the reaction tank under normal pressure and raise the temperature to react until the temperature rises to the point where the material boils. Take a sample every 30 minutes to detect its color rate and DE value, and react for 2 hours At 25 minutes, the DE value is equal to 0 to terminate a reaction, and the color rate is 0.035 at this time;

[0037] (4) Cooling: When the...

Embodiment 2

[0047] Production of 36Be, 30000EBC ammonium sulfite caramel color

[0048] (1) Metering feed: 6000kg DE value 98%, the glucose syrup that dry basis is 80% is metered into reaction tank;

[0049] (2) Alkali addition: add an appropriate amount of sodium hydroxide to the prepared glucose syrup to adjust the pH to 9.02;

[0050] (3) The first reaction: put the above-mentioned glucose syrup with adjusted PH value in the reaction tank under normal pressure to raise the temperature and react until the temperature rises to the point where the material boils, and take samples every 30 minutes to detect its color rate and DE value, and react for 3 hours At 45 minutes, the DE value is equal to 0 to terminate a reaction, and the color rate is 0.043 at this time;

[0051] (4) Cooling: When the DE value is equal to 0, the first reaction is terminated, the coolant is turned on for 15 minutes, and the material temperature is 87°C;

[0052] (5) Add catalyst: add 24kg (5‰ of maltose syrup dr...

Embodiment 3

[0061] Production of 36Be, 35000EBC ammonium sulfite caramel color

[0062] (1) Metering feed: 6000kg DE value 98%, dry basis is 90% glucose syrup metering into reaction tank;

[0063] (2) Acid addition: add an appropriate amount of sulfuric acid to the prepared glucose syrup to adjust the pH to 1.0;

[0064] (3) The first reaction: put the above-mentioned glucose syrup with adjusted PH value in the reaction tank under normal pressure to raise the temperature and react until the temperature rises to the point where the material boils. Take a sample every 30 minutes to detect its color rate and DE value, and react for 4 hours At 05 minutes, the DE value is equal to 0 to terminate the first reaction, and the color rate is 0.055 at this time;

[0065] (4) Cooling: When the DE value is equal to 0, the first reaction is terminated, the cooling liquid is turned on for 15 minutes, and the material temperature is 88°C;

[0066] (5) Add catalyst: add 32.4kg (6‰ of maltose syrup dry b...

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Abstract

The invention relates to an ammonium sulfite method-based caramel colour production process, which includes the following steps: after materials are proportioned, the PH is regulated to 1.0 to 10.0; an ordinary method is adopted for a first-time reaction; the first-time reaction is not stopped until no DE value is detected; an ammonium sulfite catalyst is added after the materials are rapidly cooled to below 90 DEG C, and the materials and the ammonium sulfite catalyst are agitated sufficiently to be mixed uniformly; an ammonium sulfite method is adopted for a second-time reaction; the second-time reaction is stopped when the colour index meets the requirement, and cooling, filtration, preparation and filling are then carried out. The invention adopts the combination of an ordinary method-based caramel colour production process and the ammonium sulfite method-based caramel colour production process; the ordinary method-based caramel colour production process is first carried out to deplete the reducing sugar in reactants, blocking the reducing sugar as one of the necessary conditions for producing 4-methylimidazole; the ammonium sulfite catalyst is then added to carry out the ammonium sulfite method-based caramel colour production process to prepare caramel colour, and thereby the 4-methylimidazole content of a caramel colour product can be stably controlled at a level lower than 0.01mg / kg.

Description

technical field [0001] The invention relates to the technical field of caramel color production, in particular to an ammonium sulfite method caramel color production process. Background technique [0002] Caramel color is also called caramel color. According to different production processes, caramel color is divided into four categories in the world: the first category, common method caramel color, that is, ammonia (ammonium) and sulfite substances are not used as catalysts. Or the caramel color produced without acid and alkali; the second type, the caustic sulfite method caramel color, uses sulfurous acid and salt substances as catalysts, but does not contain ammonia (ammonium) substances as catalysts, with or without acid and alkali The produced caramel color; the third category, the ammonia caramel color, uses ammonia (ammonium) substances as catalysts, but not sulfurous acid and salt substances as catalysts, and produces caramel colors with or without acid and alkali; N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
CPCC09B61/00
Inventor 伍学明
Owner QIANHE CONDIMENT & FOOD CO LTD
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