What foods contain xanthine oxidase?
                                
                                
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                                    4 min read                                
                            
                                A 1976 study published in the *Journal of Dairy Science* found that bulk raw milks had an average xanthine oxidase (XO) activity of 110 mU/ml, confirming its presence in common dairy products. Understanding what foods contain xanthine oxidase is crucial for managing uric acid levels, especially for individuals with gout.