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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. It can improve food safety, increase production efficiency and production volume, and save energy.

Active Publication Date: 2015-05-20
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 process for the continuous preparation of caramel pigment by ammonium sulfite method, including the following steps:

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

[0048] The solid content is 55% glucose syrup, 1.5% (calculated as S) of sodium sulfite and 2% ammonium chloride (as NH 4 + Calculate the mixture into the batching tank and stir evenly.

[0049] (2) Secondary preheating

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

[0051] (3) Heating up

[0052] The syrup after the secondary preheating in step (2) is heated to about 135°C by mixing with steam through a water heater;

[0053] (4) ...

Embodiment 2

[0070] Refer to the process of continuous preparation of caramel pigment by the ammonium sulfite method in Example 1, including the following steps:

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

[0072] The solid content is 60% F42 fructose syrup, 1.0% sodium sulfite (calculated as S) and 2.0% ammonium bicarbonate (calculated as NH). 4 + Calculate the mixture into the batching tank and mix evenly by stirring.

[0073] (2) Secondary preheating

[0074] The mixture of syrup and catalyst in step (1) is heated by two-stage preheating: the first-stage preheating exchanges heat with the concentrated caramel pigment through the first plate heat exchanger, and the temperature is raised to about 50-70℃ ; Secondary preheating is heated by the secondary steam of subsequent flash evaporation, and the temperature is raised to about 80-100℃;

[0075] (3) Heating up

[0076] The syrup after the secondary preheating is heated to about 130°C by mixing with steam through a water heater...

Embodiment 3

[0093] Refer to the process of continuous preparation of caramel pigment by the ammonium sulfite method in Example 1, including the following steps:

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

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

[0096] (2) Secondary preheating

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

[0098] (3) Heating up

[0099] After the secondary preheating, the syrup is mixed with steam and heated to about 140°C.

[0100] (4) Secondary multi-st...

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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 pigments, in particular to a process for continuously preparing caramel pigments by an ammonium sulfite method. Background technique [0002] Caramel pigment is a natural coloring agent, which is widely used in food, condiment, medicine, beverage and other industries. It is currently one of the most popular food additives in the food industry, accounting for 90% of the total amount of food coloring agent. the above. [0003] According to the production method, it can be divided into normal pressure method and pressurized method caramel. According to different reactants added during production, caramel pigments can be divided into four types: ordinary caramel, caustic sulfite caramel, ammonia caramel, and ammonium sulfite caramel. The production method of caramel pigment is different, the charge is different, the isoelectric point is different, its properties are different, and the fields suitable for use a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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