Effect of hot air convective drying on the fatty acid and vitamin E composition of chestnut (Castanea sativa Mill.) slices

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Delgado, T (Author) Other; Pereira, JA (Author) Other; Ramalhosa, E (Author) Other; Susana Casal (Author) FFUP

Journal

Title: European Food Research and Technology

Vol. 242

Pages: 1299-1306

ISSN: 1438-2377

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 16 Citations

Scopus - 15 Citations

Other information

Authenticus ID: P-00K-280

DOI: 10.1007/s00217-015-2633-5

Abstract (EN): The aim of the present work was to study the effect of hot-air drying on the quality of chestnut slices, regarding fatty acid and vitamin E composition. Chestnut slices of two varieties, Longal and Judia, were dried in a tray dryer at 50 A degrees C, for 1, 2, 4, 6, 8 and 10 h. Concerning fatty acids, at beginning both varieties presented significant different contents in C16:0, C18:0, C18:1, C18:2cc, C20:0 and C20:1, being C18:2cc the most abundant. Concerning vitamin E, both varieties had similar gamma- and delta-tocopherol contents; however, after 10 h of drying their concentrations decreased in Longal (19.2 and 14.4 %, respectively). It was also in slices of Longal variety that a significant decrease was observed in C18:0 (15.0 %), C18:1 (19.4 %), C20:0 (14.3 %) and C20:1 (11.1 %) after 10 h of drying, suggesting this variety to be a little more heat sensible than Judia. Even though some variation on lipid composition was observed along drying of chestnuts, the variety showed to have a higher effect than the drying process itself. Thus, hot air convective drying seems to be an interesting process to apply in the future to this nut in order to produce a healthy snack, not causing potential losses from a nutritional point of view.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8