A method for rapid extraction of fat from food and determination of peroxide value and acid value was studied.The extraction conditions of fat in various foods were optimized by single factor experiment and multi-factor experiment,including extraction time,solvent-assisted solid-liquid ratio and solid-liquid ratio,swirling temperature and other key factors affecting the extraction of fat in food.The ratio of solvent-assisted solid-liquid(sample:ethanol:water)was 1:0.5:0.5 after mixing evenly,the ratio of solid-liquid was added to 1:The peroxidation and acid values of 3 petroleum ether were measured reliably at 40 ℃ after 4 h extraction,and the feasibility and superiority of the method were verified.
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