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Ciência e Técnica Vitivinícola

versão impressa ISSN 0254-0223

Resumo

FERREIRA, M. L. et al. Quality control in FTIR wine analisys: Acceptance of analytical results. Ciência Téc. Vitiv. [online]. 2009, vol.24, n.1, pp.43-57. ISSN 0254-0223.

The Fourier Transform Infrared (FTIR) spectrophotometry is, at present, in the front line of routine wine analysis. With this emerging methodology it is possible to obtain a great throughput of information in a very short time. However, it is being commonly accepted that, in order to proceed successfully, a rigorous system of quality control of analytical results must be implemented and meticulously followed, being this, nowadays, a major concern for the international oenological scientific community (OIV 2009). In the present paper, the authors are proposing a new strategic approach for the quality control of results obtained through analysis with FTIR, which is being followed in routine at Port and Douro Wines Institute (IVDP). Examples are given for wine density (g/mL), alcoholic strength (% v/v), pH, volatile acidity (g/L) and total acidity (g/L).

Palavras-chave : wine analysis; FTIR spectrophotometry; quality control; limits; analytical calibration.

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