Prethodno priopćenje
Comparative Study of the Total Acidity Determination in Wine by Potentiometric and Volumetric Titration
Irena Budić-Leto
orcid.org/0000-0002-7697-8967
; Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, P.O. Box 288, 21000 Split, Croatia
Nela Mešin
; Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, P.O. Box 288, 21000 Split, Croatia
Jasenka Gajdoš Kljusurić
; University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia
Ivan Pezo
; Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, P.O. Box 288, 21000 Split, Croatia
Marija Bralić
; University of Split, Faculty of Chemistry and Technology, Department of Chemistry and Environmental Chemistry, Teslina 10/V, 21000 Split, Croatia
Sažetak
Total acidity was determined in thirty-seven samples of Croatian red, white and rosé wines by potentiometric titration. In order to find the effect of the corresponding rate of the automatic titrant added, several procedures were employed. For different rates of titration, the aberrances were found from 0.1 to 0.4 g L–1 for some wines. The value of the total acid content in wine determined by the automatic potentiometric titration method was compared to that obtained by the conventional volumetric titration method. The ANOVA and cluster analysis (CA) were applied to detect possible resemblance. The results of total acidity depended on the methods used. However, a good correlation between the results by these methods was found.
Ključne riječi
wine; total acidity; potentiometric titration; volumetric titration
Hrčak ID:
35779
URI
Datum izdavanja:
26.3.2009.
Posjeta: 1.142 *