The analyses were performed by gas chromatography-mass spectrometry after derivatisation of p-cresol with anhydride acetic and pyridine. 
gas chromatography-mass spectrometry
Better results were achieved by the QuEChERS method, which showed recovery higher than 80%, relative standard deviation lower than 16%, limit of quantification of 5 μg kg-1 and linearity between 5 and 400 μg kg-1 with R2 0.99. 
QuEChERS method
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment
D002611:Cheese; D003408:Cresols; D005421:Flavoring Agents; D005506:Food Contamination; D008401:Gas Chromatography-Mass Spectrometry; D059625:Liquid-Liquid Extraction; D015394:Molecular Structure; D052616:Solid Phase Extraction
Oshiro Susane S ;Ramalho Marta M ;Durães Paloma Cristina PC ;Andrade Raissa R ;Silva Karolina K ;Silvério Flaviano F ;Pinho Gevany G 