A kind of diglyceride rich in polyunsaturated fatty acids and preparation method thereof

Through technical means such as supercritical fluid extraction and esterification reaction, the problems of solvent residues and fatty acid losses in the preparation process of diglycerides in the prior art were solved, and the preparation of diglycerides that are highly enriched in polyunsaturated fatty acids was achieved, which enhanced the functional and nutritional value of the product.

CN119752540APending Publication Date: 2025-04-04郭飞龙
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Patent Information

Application Number
CN202411956020.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-28
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

The prior art has problems such as solvent residue, loss or oxidation of target fatty acids, low extraction efficiency and lack of selective enrichment in the preparation process of diglycerides rich in polyunsaturated fatty acids, resulting in insufficient product functionality and nutritional value.

Method used

Supercritical fluid extraction technology is used to separate and enrich polyunsaturated fatty acids from natural vegetable oils, and combine them with glycerol through esterification, followed by molecular distillation purification and antioxidant treatment to prepare high-purity diglycerides.

Benefits of technology

It has achieved efficient enrichment and protection of polyunsaturated fatty acids, improved the functionality, safety and storage stability of the product, and has a gentle and environmentally friendly process, and has good industrialization potential.

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Abstract

The invention relates to the technical field of diglyceride preparation, and specifically discloses a diglyceride rich in polyunsaturated fatty acids and a preparation method thereof, comprising: S1, fatty acid extraction and enrichment, S2, selective synthesis of diglyceride, S3, product purification and S4, antioxidant treatment; the invention uses supercritical fluid extraction technology to efficiently enrich polyunsaturated fatty acids (PUFA) from vegetable oil or marine oil, and the PUFA content in the final product is as high as 85%-98%, especially linoleic acid, α-linolenic acid, DHA and EPA have a scientific and reasonable ratio, which helps to: regulate serum cholesterol and low-density lipoprotein (LDL) and reduce the risk of arteriosclerosis; polyunsaturated fatty acids are proven to have significant effects on lowering blood lipids and anti-inflammation; DHA and EPA are key nutrients for the growth and development of infants and young children.
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