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As the sensory quality of the tea is related to the presence of volatile compounds that are formed in the processing steps, the objective of this work was to investigate the profile of volatile organic compounds (VOC's) in commercial mint tea samples (sample 1) and without mint (samples 2 and 3) through the use of microextraction technique of solid phase extraction 1 Como citar este artigo: SALES, P. F.; LIMA, L. M. Z. Análise comparativa do perfil de compostos voláteis pela técnica de HS-SPME em amostras comerciais de chá verde e avaliação do efeito da infusão e da adição de sal. ForScience, Formiga, v. 9, n. 1, e00769, jan./jun. 2021. DOI: 10.29069/forscience.2021v9n1.e769. 2 Autor para correspondência: Priscila Ferreira de Sales, e-mail: prifeamaral@gmail.com SALES, P. F.; LIMA, L. M. Z. Análise comparativa do perfil de compostos voláteis pela técnica de HS-SPME em amostras comerciais de chá verde e avaliação do efeito da infusão e da adição de sal 2 ForScience, Formiga, v. 9, n. 1, e00769, jan./jun. 2021 (SPME) and detection by gas chromatography-mass spectrometry (GC-MS). The samples were subjected to treatment by infusion, being evaluated the effect of the addition of salt (NaCl) for the extraction of compounds. The samples exhibited a high complexity, about 68 compounds were detected. Employing the pattern recognition algorithms which involved PCA and HCA, it was found that sample 1 is differed from the others because it presents common peaks with greater intensity and having volatile organic compounds characteristic of said sample. The results also possible to infer that the treatment effect was more significant in this sample, because the infusion process worked at reduction of volatile compounds. Adding salt favored the extraction of analytes in which it was found that the samples infused with NaCl were similar to those in commercial form. The same trend was observed in all the samples submitted to treatments.

forscience

Análise comparativa do perfil de compostos voláteis pela técnica de HS-SPME em amostras comerciais de chá verde e avaliação do efeito da infusão e da adição de sal