Preparation method of egg yolk lecithin

The preparation method comprises the following steps: acquiring an extraction pressure value, an extraction temperature value and a carbon dioxide flow value at a plurality of preset time points in a preset time period; an artificial intelligence technology based on deep learning is adopted, a parameter collaborative association relationship between extraction pressure values is mined, and dynamic association feature distribution information between collaborative association information of the extraction pressure values and a flow value of carbon dioxide is extracted; and the flow value of the carbon dioxide is adaptively regulated and controlled based on the change condition of the actual extraction parameters. Therefore, self-adaptive control can be accurately performed on the carbon dioxide flow value at the current time point in real time based on the actual extraction parameter change condition, so that environmental pollution is avoided while the preparation quality and efficiency of the finally prepare