PT  - JOURNAL ARTICLE
AU  - J. C. RIVAS-GONZALO
AU  - Y. GUTIERREZ
AU  - A. M. POLANCO
AU  - E. HEBRERO
AU  - J. L. VICENTE
AU  - P. GALINDO
AU  - C. SANTOS-BUELGA
TI  - Biplot Analysis Applied to Enological Parameters in the Geographical Classification of Young Red Wines
AID  - 10.5344/ajev.1993.44.3.302
DP  - 1993 Jan 01
TA  - American Journal of Enology and Viticulture
PG  - 302--308
VI  - 44
IP  - 3
4099  - http://www.ajevonline.org/content/44/3/302.short
4100  - http://www.ajevonline.org/content/44/3/302.full
SO  - Am J Enol Vitic.1993 Jan 01; 44
AB  - Fifteen variables including conventional enological parameters, phenolics, and color-related parameters were analyzed in 45 young red wines belonging to the Spanish zones Ribera de Duero and Toro with Certified Brand of Origin (CBO). The data obtained were subjected to HJ biplot analysis to determine whether, with the variables employed, it would be possible to differentiate the wines according to their CBO. Alcohol, fixed acidity, pH, degree of ionization of anthocyanins, total phenolics, and procyanidins were the variables with the best relative contributions to discrimination between the two CBO's. A logistic model for estimating the probability of a given sample belonging to a certain CBO is proposed. According this prediction model, 100% of the observations for Ribera de Duero and 81.81% for those of Toro are well classified.