期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2021
卷号：12
期号：2
页码：217-223
语种：English
出版社：University of Mohammed Premier Oujda
摘要：Tunisian environmental conditions permitted perfect adaptation of fig trees (Ficus carica L.). However, fresh figs are very perishable due to their high-water content and considerable losses are recorded. Drying is one of the practical technologies and helps to preserve product’s quality and increase the availability of figs throughout the year. This study concerned the effect of two solar drying techniques (open air and greenhouse) on the physicochemical and biochemical characteristics of two local varieties Bither Abiadh (San pedro type) and Bidhi (Smyrna type). The results showed that the moisture content of dried figs was around 18% indicating no significant effect of the drying type and the variety. The observed variation in water activity was attributed mainly to varietal effect. Bither Abiadh showed the highest moisture content and water activity. Compared to open air drying, greenhouse improved the external color of figs of the two varieties which showed the highest values of yellowness and brightness. Drying in a greenhouse allowed also having total phenolic content approximately twice as high as that drying at open air for both varieties. Bidhi revealed the highest content (1098 mg GA / 100g DM). The variations of major mineral compounds (Mg, P, K, Ca) were also mainly due to the varietal effect. Bidhi showed the highest amounts. While the type of drying had a significant effect on the content of traces elements (Mn, Fe, Cu, Zn). High temperatures of the greenhouse generated a decrease of the levels of trace elements. These results demonstrated several advantages of tunnel drying over traditional air drying. This technique deserves further research in the local conditions of farmers.
