Sample food preparation.Preparation of samples oilFried meatballs, bring down 10 minutes at a time.Using a sieve, fried meatballs, lap.Continuous frying until 3 hours per day.After the trial, there is no thotklum to fill the new oil.After the thotklum is the new oil. Down toRepeat frying every day for 5 consecutive days until I have time to include 15 hours of frying.Oil sample bottles The color of tea. 35 ml at a time. Polar in toxicological research in the frying oil this time. Use column chromatography method
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