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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comparison of esters determination techniques in cachaça

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Author(s):
Eduardo S. P. Nascimento [1] ; Daniel R. Cardoso [2] ; Douglas W. Franco [3]
Total Authors: 3
Affiliation:
[1] Universidade de São Paulo. Instituto de Química de São Carlos. Departamento de Química e Física Molecular - Brasil
[2] Universidade de São Paulo. Instituto de Química de São Carlos. Departamento de Química e Física Molecular - Brasil
[3] Universidade de São Paulo. Instituto de Química de São Carlos. Departamento de Química e Física Molecular - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Química Nova; v. 32, n. 9, p. 2323-2327, 2009-00-00.
Abstract

An analytical comparison of three different techniques for quantitative profile of esters in cachaça is reported. The Ministério da Agricultura Pecuária e Abastecimento (MAPA) recommends the use of GC/FID or volumetry. Despite being laborious and lacking in chemical speciation, the volumetric technique for total ester content shows to be appropriate, reproducible, and accurate for the analysis of cachaça. However, the GC/FID suggested by MAPA, considering only ethyl acetate, shows inaccuracy, underestimating the total ester content by a median factor of 72%, mainly due to the absence of ethyl lactate analysis. On the other hand, the GC/MS technique that comprises the analysis and speciation of nine esters, including ethyl lactate, proved to be reproducible, simple, fast and accurate for the analysis of total ester content in cachaça. Thus, the total ester content results obtained using GC/FID must be considered with precaution. (AU)