POLIMERIC MATERIALS AS PACKAGING FOR APULIA TABLE WINES

In this study, preliminary results on the preservation of red, rose and white table wine in polymeric packages (Polyethylene terephthalate (PET); PET with oxygen scavenger; PET with external coating) compared to that of the same wines in glass bottles are reported. Analytical parameters measuring preservation state, including amount of oxygen dissolved, sulfur dioxide, volatile acidity, titratable acidity, absorbance at 420 nm, at 520 nm and 620 nm, alchol content, pH and total phenols have been considered. Furthermore, volatile and polyphenolic fraction profiles have been evaluated by means of GC/MS and HPLC/DAD/MS techniques, respectively. All the results have confirmed that the alternative containers are efficient for preserving red, rose and white table wines up to the storage time that was at the moment considered.