Method for industrially preparing medium-chain triglyceride

Abstract

According to the method for industrially preparing the medium-chain triglyceride, the composite catalyst is adopted, caprylic acid, capric acid and glycerol react, the high-purity caprylic / capric triglyceride product is synthesized through three-stage programmed heating and decompression, the efficiency is high, the yield and the esterification rate are high, the energy consumption is reduced, and the production cost is remarkably reduced; the industrial preparation of the high-purity medium-carbon chain triglyceride is realized.

Description

technical field [0001] The invention belongs to the fields of oleochemical technology and fine chemical technology, and in particular relates to a method for industrially preparing medium-carbon chain triglycerides. Background technique [0002] C 8 -C 10 Fatty acid triglycerides, commonly known as medium chain triglycerides (MCT), are widely used in food, medicine and other industries. MCTs are esters derived from the reaction of fatty acids with a carbon chain length of 8 to 10 and glycerol. MCTs consist of a glycerol backbone and three fatty acids attached to the backbone. Typical MCTs refer to saturated caprylic triglycerides or saturated capric triglycerides or saturated caprylic-capric mixed triglycerides. [0003] MCTs are generally considered to be an excellent source of bio-inert energy that is easily metabolized by the body. Due to their rapid absorption by the body, medium chain triglycerides have been used in the treatment of various malabsorption disorders....

AI Technical Summary

Problems solved by technology

However, enzymatic synthesis technology is still immature so far, although it has been widely studied, it is still in the laboratory stage.

[0005] The currently disclosed method for preparing medium-carbon chain triglycerides, the catalyst mainly includes an acidic solid catalyst, which is a macroporous strong acidic cation exchange resin, immobilized phosphotungstic acid, and the lipase is an immobilized lipase, mainly Novozyme435 or LipozymeRMIM , the last is traditional sulfuric acid, etc. Different catalysts have different characteristics. The advantage of lipase is environmental protection, but its disadvantages are also obvious and often cannot be applied due to long reaction time and high investment. Secondly, compared with traditional Although the acid provides convenience for post-processing, it also faces difficulties that are difficult to bypass with traditional acids, such as high reaction temperature, usually around 180°C, and long time, usually 14 hours, which can easily cause fatty acid polymerization, glycerin oxidation and dehydration. It leads to many side reactions and high energy consumption, and the product quality and color are not ideal, so a lot of post-processing work is required, resulting in high production costs

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