Czech J. Food Sci., 2001, 19(6):213-218 | DOI: 10.17221/6610-CJFS

Wheat flour dough rheological characteristics predicted by NIRSystems 6500

M. Hrušková, M. Bednářová, F. Novotný
1 Institute of Chemical Technology - Department of Carbohydrate Chemistry and Technology, Prague
2 Central Institute for Supervising and Testing in Agriculture, Brno, Czech Republic

Rheological quality of wheat dough prepared from 114 wheat flour samples (wheat harvest 1998 and 1999) was assessed by help of farinograph and extensigraph. Spectra of all samples were measured on spectrograph NIRSystems 6500 NIR. Calibration equations with cross and independent validation for all rheological characteristics were computed by NIR Software ISI Present WINISI II using mPLS and PLS methods. The quality of prediction was evaluated by coefficients of correlation between measured and predicted values from cross and independent validation. A statistically significant dependence between predicted and measured values (with probability higher than 99%) was determined in all mentioned rheological characteristics in the case of cross validation. Only farinograph absorption, time of dough development and mixing tolerance were successfully predicted by independent validation. Predictions of extensigraph characteristics were not found out statistically significant probably due to a small number of tested samples.

Keywords: wheat flour dough; farinograph; extensigraph; NIRSystems 6500; prediction of rheological characteristics

Published: December 31, 2001  Show citation

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Hrušková M, Bednářová M, Novotný F. Wheat flour dough rheological characteristics predicted by NIRSystems 6500. Czech J. Food Sci. 2001;19(6):213-218. doi: 10.17221/6610-CJFS.
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