Microfibers for juice analysis by solid-phase microextraction

Food Science and Technology (Campinas)

Renata Borchetta Fernandes Fonseca²  Lucia Maria Jaeger De Carvalho²  Carolina Netto Rangel²  Humberto Ribeiro Bizzo¹ 

[1] ,Universidade Federal do Rio de Janeiro Instituto de Nutrição Josué de Castro Departamento de Nutrição Básica e ExperimentalRio de Janeiro RJ ,Brasil

关键词: citrus;    beverages;    analysis;    organic agriculture;    frutos cítricos;    bebidas;    análises;    agricultura orgânica;   

DOI  :  10.1590/S0101-20612008000500026

来源: SciELO

【 摘 要 】

In view of the interest in analyzing volatile compounds by SPME, the following five microfibers were tested, polydimethylsiloxane; polyacrylate; polydimethylsiloxane/divinylbenzene; carboxen/polydimethylsiloxane, and carbowax/divinylbenzene, to select the one which presents the best performance for the adsorption of the volatile compounds present in the headspace of acid lime juice samples. Sample stabilization time variations (30 and 60 minutes) were assessed as well the addition of NaCl to the samples. It was verified that the chromatogram with the most adsorbed volatile compounds was obtained with PDMS/DVB microfiber at 30 minutes and the addition of 0.2 g NaCl.

【 授权许可】

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