Analytical methodology for patulin contents in apple juice was studied by the comparison of thin layer chromatography (TLC) and gas chromatography with moss spectrometry (GC/MS). Results indicated that the determination limit of TLC (100μg/l) was Shove the safe contamination level (50μg/l) of patulin. A method for the analysts of patulin in apple juice was developed using GC of patulin acetate. Patulin acetate can be measured down to a level of 10μg/l with 90% recovery. Results also indicated that conversion of patulin to patulin acetate in aqueous samples before extraction can increase the extinction and recovery efficiency.
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