Manufacturing method of maltitol
Maltitol is a widely used raw material for the production of chemicals, especially in the fields of food, medicine and cosmetics. Understanding its manufacturing method is important for improving production efficiency, reducing cost and optimizing product quality. In this paper, the manufacturing method of maltitol will be introduced in detail, including the steps of raw material preparation, reaction process, and post-treatment.
I. Raw material preparation
1. Starch: choose high purity and low protein content starch as raw material, which is conducive to improving the purity and yield of maltitol.
2. Hydrochloric acid or sulfuric acid: used as catalyst to adjust pH value and promote the reaction.
3. Sodium hydroxide: used to neutralize the acid produced during the reaction and adjust the pH to neutral.
II. Reaction process
1. Starch hydrolysis: mix starch with hydrochloric acid or sulfuric acid, heat it to a certain temperature and keep it for a certain period of time to hydrolyze starch to glucose.
2. glucose isomerization: under alkaline condition, glucose isomerized to fructose.
3. Hydrogenation of fructose: Hydrogenation reaction of fructose with hydrogen under the action of catalyst to produce maltitol.
3. Post-treatment
1. Neutralization: Neutralize the reaction solution with sodium hydroxide solution to make its pH value adjusted to neutral.
2. Decolorization: add activated carbon for decolorization to remove impurity pigment.
3. Ion exchange: remove metal ions and other impurities in the reaction solution by ion exchange resin.
4. Concentration: Concentrate the maltitol solution to a certain concentration by vacuum concentration or evaporation concentration.
5. Crystallization: Cool the concentrated solution to a certain temperature, so that the maltitol crystals precipitate.
6. Separation and drying: Separate the maltitol crystals by centrifugation, filtration and other methods, and dry them to the specified moisture content by vacuum drying or hot air drying.
Through the above steps, high purity maltitol products can be manufactured. In the actual production process, it needs to be optimized and adjusted according to the specific equipment and process conditions in order to improve the production efficiency and product quality. At the same time, the operating conditions of each step and the quality of raw materials are strictly controlled to ensure that the product meets the relevant standards and regulations.
In conclusion, the manufacturing method of maltitol involves a number of links and operational steps, and it is necessary to carefully master 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 the equipment, the production efficiency of maltitol can be further improved and the production cost can be reduced, creating greater economic and social benefits for the enterprise.
