RT Journal Article
SR Electronic
T1 Organic Acids, Sugars, and Glycerol Content in White Winemaking Products Determined by HPLC: Relationship to Climate and Varietal Factors
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP 193
OP 198
DO 10.5344/ajev.1996.47.2.193
VO 47
IS 2
A1 López-Tamames, Elvira
A1 Puig-Deu, Ma Asunción
A1 Teixeira, Evanilda
A1 Buxaderas, Susana
YR 1996
UL http://www.ajevonline.org/content/47/2/193.abstract
AB An ion-exclusion polymeric HPLC method with RI detection was developed for direct separation and quantitation of organic acids (citric, tartaric, malic, succinic, galacturonic, and lactic), sugars (glucose and fructose), and glycerol in white winemaking products. The precision, linearity, sensitivity, and accuracy of the method were satisfactory. This rapid method — without sample preparation — was applied to routine quality control procedures in the winemaking industry: 33 A.O.C. Penedès varietal musts (Macabeo, Xarel.lo, and Parellada) and their white wines from five harvests (1989-1993) were analyzed. The contents of some of these compounds were related to grape variety (galacturonic acid) and/or climate parameters (citric, malic and galacturonic acids, and glycerol). Macabeo wines have high amounts of galacturonic acid than other varietal wines. The must content of malic and citric acids were correlated with weather factors such as temperature, atmospheric pressure, and rain; galacturonic acid and glycerol levels in must were affected by humidity.