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Process for continuous preparation of caramel pigment by ammonium sulfite method

An ammonium sulfite method, caramel color technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problem that caramel color is difficult to meet high color rate and high red index, production efficiency and output at the same time. problems such as non-existence, restrictions on the use of caramel colors, etc., to achieve the effects of good product quality stability, improved production efficiency and production volume, and improved food safety.

Active Publication Date: 2013-03-27
GUANGZHOU SHUANGQIAO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the ammonium sulfite caramel production processes at home and abroad are open and intermittent, and the caramelization reaction is carried out under normal pressure. This method takes a long time, the reaction efficiency is low, and the production efficiency and output cannot keep up. , the product quality is also unstable, and the most fatal thing is that once a problem occurs, the entire batch of caramel coloring will be scrapped, which is wasteful
In addition, the color ratio and red index of caramel pigments are inversely proportional. Caramel pigments produced by traditional production methods are difficult to meet the requirements of high color ratio and high red index at the same time, which limits the use of caramel pigments.

Method used

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  • Process for continuous preparation of caramel pigment by ammonium sulfite method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see figure 1 , a kind of ammonium sulfite method continuously prepares the technique of caramel pigment, comprises the following steps:

[0047] (1) Add catalyst and mix with syrup for the first time

[0048] A mixture of glucose syrup with 55% solid content, 1.5% (calculated as S) sodium sulfite and 2% ammonium chloride (calculated as NH4+) accounting for the solid content of the syrup is passed into the batching tank and stirred evenly.

[0049] (2) Secondary preheating

[0050] Raise the temperature of the syrup and catalyst mixture in step (1) through secondary preheating: the primary preheating is to exchange heat with the subsequent concentrated caramel pigment through the first plate heat exchanger, and raise the temperature to about 50-70°C ;Secondary preheating is heated by the secondary steam of the subsequent flash, and the temperature is raised to about 80-100°C;

[0051] (3) heating up

[0052] The syrup after the secondary preheating in step (2) is hea...

Embodiment 2

[0070] The technique for continuously preparing caramel pigment with reference to the ammonium sulfite method of embodiment 1 may further comprise the steps:

[0071] (1) Add catalyst and mix with syrup for the first time

[0072] F42 fructose syrup with a solid content of 60% and 1.0% sodium sulfite (calculated as S) and 2.0% ammonium bicarbonate (calculated as NH) in the solid content of the syrup 4+ meter) into the batching tank, and mix evenly by stirring.

[0073] (2) Secondary preheating

[0074] Raise the temperature of the syrup and catalyst mixture in step (1) through secondary preheating: the primary preheating is to exchange heat with the subsequent concentrated caramel pigment through the first plate heat exchanger, and raise the temperature to about 50-70°C ;Secondary preheating is heated by the secondary steam of the subsequent flash, and the temperature is raised to about 80-100°C;

[0075] (3) heating up

[0076] The syrup after the secondary preheating is ...

Embodiment 3

[0093] The technique for continuously preparing caramel pigment with reference to the ammonium sulfite method of embodiment 1 may further comprise the steps:

[0094] (1) Add catalyst and mix with syrup for the first time

[0095] The solid content is 46% maltose syrup and 1.5% sodium sulfite (calculated as S) and 2.5% ammonia water (calculated as NH 4+ meter) into the batching tank, and mix evenly by stirring.

[0096] (2) Secondary preheating

[0097] Raise the temperature of the syrup and catalyst mixture in step (1) through secondary preheating: the primary preheating is to exchange heat with the subsequent concentrated caramel pigment through the first plate heat exchanger, and raise the temperature to about 50-70°C ;Secondary preheating is heated by the secondary steam of the subsequent flash, and the temperature is raised to about 80-100°C;

[0098] (3) heating up

[0099] After the secondary preheating, the syrup is heated to about 140°C by mixing with steam throug...

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Abstract

The invention discloses a process for continuous preparation of caramel pigment by an ammonium sulfite method, which comprises the following steps of: (1) adding a catalyst for the first time, and mixing with syrup; (2) performing two-stage pre-heating; (3) increasing temperature; (4) performing secondary multi-stage catalyst feeding and caramelization; (5) flashing and reducing temperature; (6) diluting and regulating pH value; (7) filtering; (8) condensing; (9) performing two-stage cooling, and (10) quality regulating which can be further comprised. The process for continuous preparation of the caramel pigment by the ammonium sulfite method disclosed by the invention can realize continuous and sealed preparation of the caramel pigment by the ammonium sulfite method, improve production efficiency and output, improve safety of the product and reduce the energy consumption; the produced caramel pigment is stable in quality, and is capable of simultaneously meeting high color index and high red index, being ideal caramel pigment in many fields, particularly in soy sauce.

Description

technical field [0001] The invention relates to the preparation of caramel pigment, in particular to a process for continuously preparing caramel pigment by an ammonium sulfite method. Background technique [0002] Caramel coloring is a natural coloring agent widely used in food, condiment, medicine, beverage and other industries. It is one of the most popular food additives in the food industry, accounting for 90% of the food coloring agent consumption. above. [0003] According to the production method, it can be divided into normal pressure method and pressurized caramel. According to the different reactants added during production, caramel coloring can be divided into four categories: ordinary caramel, caustic sulfite caramel, ammonia caramel, and ammonium sulfite caramel. Caramel pigments are produced in different ways, have different charges, different isoelectric points, different properties, and different fields of application. [0004] Ammonium sulfite caramel is...

Claims

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Application Information

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IPC IPC(8): C09B61/00
Inventor 徐正康周彦斌罗建勇徐丽霞黄立新陈文锋冯炳洪郭峰叶晓蕾安波
Owner GUANGZHOU SHUANGQIAO
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