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Changes in phenolic compounds, colour and antioxidant activity in red myrtle liqueurs during storage

Vacca, Vincenzo and Piga, Antonio <1965- > and Del Caro, Alessandra and Fenu, Paolo Antonio Maria and Agabbio, Mario Carlo Salvatore (2003) Changes in phenolic compounds, colour and antioxidant activity in red myrtle liqueurs during storage. Die Nahrung, Vol. 47 (6), p. 441-447. eISSN 1521-3803. Article.

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DOI: 10.1002/food.200390098

Abstract

The results of a study on the evolution of phenolic compounds, colour and antioxidant activity in two industrial red myrtle liqueurs during storage in bottles under different bottle headspace (constant or increasing) and exposure to light are reported. In the year of the study, the phenolic compounds showed considerable changes even in the liqueurs stored with constant headspace. The anthocyanins in particular, both free and combined, tended to decrease. As expected, the same phenomena were observed in an accelerated form in the product stored in bottles with increasing headspace. The colour, evaluated according to the classic spectrophotometric parameters of intensity and hue, showed marked variability, especially in samples in which headspace was progressively increased. The two liqueurs showed antioxidant capacity values, expressed as mM of Trolox, comparable to those of red wine. They significantly decreased during storage in the bottles with increasing headspace, while values remained almost constant in the others.

Item Type:Article
ID Code:1577
Status:Published
Refereed:Yes
Uncontrolled Keywords:Antioxidant activity, myrtle liqueur, polyphenols
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/15 Scienze e tecnologie alimentari
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze ambientali agrarie e biotecnologie agro-alimentari
Publisher:Wiley
eISSN:1521-3803
Deposited On:18 Aug 2009 10:05

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