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Hot air dehydration of figs (Ficus carica L.): drying kinetics and quality loss

Piga, Antonio <1965- > and Pinna, Ivo and Ozer, Kamer B. and Agabbio, Mario Carlo Salvatore and Aksoy, Uygun (2004) Hot air dehydration of figs (Ficus carica L.): drying kinetics and quality loss. International Journal of Food Science & Technology, Vol. 39 (7), p. 793-799. eISSN 1365-2621. Article.

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DOI: 10.1111/j.1365-2621.2004.00845.x

Abstract

The dehydration of fruit from fig trees is normally achieved by sun drying. There is concern about the safety of the end product, mainly because there is a risk of the development of aflatoxins. These concerns can be overcome by artificial drying (oven dehydration). Fig fruits of a local cultivar, which were either pre-treated by blanching or blanching plus sulphuring or not treated at all, underwent hot air dehydration under mild processing conditions in a pilot airflow cabinet dryer. Sampling was carried out at regular intervals to calculate the rate of dehydration and assess quality changes. Microbiological counts and nonenzymatic browning were also monitored. Pretreatments resulted in a shorter processing time, compared with control fruits. In general, a falling dehydration rate period was observed. A dramatic loss of ascorbic acid was recorded, while an informal sensorial assay of the dried fruits gave a positive assessment.

Item Type:Article
ID Code:1564
Status:Published
Refereed:Yes
Uncontrolled Keywords:Ascorbic acid, blanching, browning, colour, microbial count, pretreatments
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:Blackwell / Wiley
eISSN:1365-2621
Deposited On:18 Aug 2009 10:05

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