PT - JOURNAL ARTICLE AU - I. Segarra AU - C. Lao AU - E. López-Tamames AU - M. C. De La Torre-Boronat TI - Spectrophotometric Methods for the Analysis of Polysaccharide Levels in Winemaking Products AID - 10.5344/ajev.1995.46.4.564 DP - 1995 Jan 01 TA - American Journal of Enology and Viticulture PG - 564--570 VI - 46 IP - 4 4099 - http://www.ajevonline.org/content/46/4/564.short 4100 - http://www.ajevonline.org/content/46/4/564.full SO - Am J Enol Vitic.1995 Jan 01; 46 AB - The polysaccharide content in 27 white winemaking samples was examined using two colorimetric methods (phenol and o-hydroxydiphenyl reagents, respectively). Total polysaccharide (TPS), acid polysaccharide (APS), and neutral polysaccharide (NPS) fractions were determined. The advantages of these methods were demonstrated: linearity, precision, accuracy, and selectivity were studied. The levels of TPS, APS, and NPS depended on varietal characteristics, harvest, and winemaking process.