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Detection of postharvest changes of ascorbic acid in fresh-cut melon, kiwi, and pineapple, by using a low cost telemetric system

Barberis, Antonio and Fadda, Angela and Schirra, Mario and Bazzu, Gianfranco and Serra, Pier Andrea (2012) Detection of postharvest changes of ascorbic acid in fresh-cut melon, kiwi, and pineapple, by using a low cost telemetric system. Food Chemistry, Vol. 135 (3), p. 1555-1562. eISSN 1873-7072. Article.

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DOI: 10.1016/j.foodchem.2012.05.121

Abstract

The present paper deals with a novel telemetric device combined with a carbon amperometric sensor system to determine postharvest changes of ascorbic acid (AA) in fresh-cut fruits, without displacing products out of the storage rooms. The investigation was performed on kiwi, pineapple and melon, subjected to minimal processing, packaging, cold storage, and simulated shelf life. Results demonstrated that AA content of fresh-cut fruits of all species declines differently during storage. Cold storage notably reduced the degradation rate of AA in comparison with samples stored at 20 °C. The cold-chain interruption resulted in a sharp AA content reduction when the optimal storage condition was not rapidly replaced.
Unpredicted results showed a high activity of oxidative enzymes, which prevented AA detection in melon samples. Our sensor system allowed us to demonstrate that both ascorbate peroxidase and ascorbate oxidase affected the oxidative stability and the nutritional quality of fresh cut melon fruits.

Item Type:Article
ID Code:8698
Status:Published
Refereed:Yes
Uncontrolled Keywords:Ascorbic acid, fresh-cut fruits, electrochemical sensor, telemetry
Subjects:Area 05 - Scienze biologiche > BIO/14 Farmacologia
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto di scienze delle produzioni alimentari, Sassari
001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Medicina Clinica e Sperimentale
Publisher:Elsevier
eISSN:1873-7072
Deposited On:26 Feb 2013 10:36

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