Method for extracting cholesterol from fish oil

The invention provides a method for extracting cholesterol from fish oil, which comprises the following steps: S1, mixing fish oil and methanol in an alkaline environment for reaction to obtain a reaction mixture; s2, carrying out acid neutralization reaction on the reaction mixture to obtain a neutralized product; s3, cooling and crystallizing the neutralized product to obtain the solid cholesterol. According to the present invention, the methanol and the fish oil are subjected to the transesterification reaction so as to simply and efficiently separate the cholesterol from the methyl ester solution, such that the cholesterol crude product is extracted from the cholesterol-rich fish oil waste residue at the high yield; according to the method, the extraction yield of cholesterol is improved while the extraction method is simplified, so that subsequent further refining and purification are facilitated, and the cholesterol can be reused as a production raw material. 本发明提供了一种从鱼油中提取胆固醇的方法，该方法包括如下步骤：S1，将鱼油与甲醇在碱性环