AUTOXIDATION OF PACKED ROASTED ALMONDS AS AFFECTED BY TWO PACKAGING FILMS |
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Authors: | CARLA SEVERINI TERESA DE PILLI ANTONIETTA BAIANO TOMMASO GOMES |
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Affiliation: | Dipartimento di Scienze degli Alimenti University of Foggia Via Napoli 25 71100 Foggia, Italy;Dipartimento di Progettazione e Gestione dei Sistemi Agro-Zootecnici e Forestali University of Bari Via Amendola 165/A 70126 Bari, Italy |
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Abstract: | Peeled and unpeeled almonds of Romana and Pizzuta varieties of almonds were roasted and packed under vacuum conditions, using two films having different barrier effects against O2. The almonds were stored for eight months at room temperature in the dark and, at regular intervals, were analyzed to study the progress in lipid oxidation. Results showed that almond oxidation strongly depended on packaging: the film with the highest barrier effect against O2 was able to better preserve almonds. With reference to Romana almonds, peeled almonds were slightly more oxidized than unpeeled almonds especially in the last phase of the storage. In the case of Pizzuta almonds, the difference between peeled and unpeeled nuts was more evident. The results of chemical and instrumental analyses were confirmed by the judgements of the panel test, pointing out a more positive evaluation for the Romana variety of almonds. |
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