#$%^&*AU2020101598A420200910.pdf#####Abstract The invention discloses an egg yolk lecithin extraction and quality fidelity technology. The extraction method includes: degreasing, extraction of lecithin, and purification of lecithin. For purification, silica gel is used as the stationary phase of column chromatography, and ethanol-water solution is used as the elution. The gradient of the reagent is gradually eluted, and the polarity of the eluent is gradually increased, that is, the ethanol concentration is reduced from a 100% gradient to 80%, and the flow rate is 1-3mL/min. Collect the eluent containing a single phosphatidylcholine and vacuum, concentrate to obtain lecithin with purity>；95%. The invention can establish the extraction of high-purity lecithin, and at the same time useing microcapsule technology to process egg yolk lecithin, so as to improve the stability of lecithin and extend the shelf life of the product.DRAWINGS Poultry eggs - Egg yolk Degrasing Stand at low Vacuum ''I temperature filtration Lecithin with a purity of Concentrate Vacuum Ethanol 75%-85% filtration extraction Purification - Concentrate - Lecithin with Microencapsulation a purity >；95% Antioxidants Fig. 1
