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Manufacturing method
of maltitol
maltitol is a widely used raw material for chemical production, especially in the fields of food, medicine and cosmetics. Understanding its manufacturing methods is of great significance for improving production efficiency, reducing costs and optimizing product quality. This article will introduce the manufacturing method of maltitol in detail, including raw material preparation, reaction process, post-treatment and other steps.
1. raw material preparation
1. starch: choose high purity, low protein content of starch as raw material, is conducive to improve the purity and yield of maltitol.
2. Hydrochloric acid or sulfuric acid: as a catalyst, the pH is adjusted to promote the reaction.
3. Sodium hydroxide: used to neutralize the acidic substances generated during the reaction and adjust the pH value to neutral.
2. reaction process
1. Starch hydrolysis: mix starch with hydrochloric acid or sulfuric acid, heat to a certain temperature, and keep it for a certain time to hydrolyze the starch into glucose.
2. Glucose isomerization: Under alkaline conditions, glucose is isomerized to fructose.
3. fructose hydrogenation: fructose and hydrogen are hydrogenated under the action of a catalyst to generate maltitol.
3. Post-treatment
1. Neutralization: The reaction solution is neutralized with sodium hydroxide solution to adjust its pH to neutral.
2. decolorization: add activated carbon decolorization treatment, remove impurities pigment.
3. Ion exchange: metal ions and other impurities in the reaction solution are removed by ion exchange resin.
4. Concentration: The maltitol solution is concentrated to a certain concentration by vacuum concentration or evaporation concentration.
5. Crystallization: The concentrated solution is cooled to a certain temperature to crystallize the maltitol.
6. Separation and drying: The maltitol crystals are separated by centrifugation, filtration, etc., and dried to a specified moisture content by vacuum drying or hot air drying.
Through the above steps, a high-purity maltitol product can be produced. In the actual production process, it is necessary to optimize and adjust according to specific equipment and process conditions to improve production efficiency and product quality. At the same time, strictly control the operating conditions and raw material quality of each step to ensure that the products meet relevant standards and regulations.
In short, the manufacturing method of maltitol involves multiple links and operation steps, and it is necessary to carefully grasp the key technical points of each link to ensure the quality and yield of the final product. By continuously optimizing the production process and improving the degree of automation of equipment, we can further improve the production efficiency of maltitol and reduce production costs, and create greater economic and social benefits for enterprises.