Comparison of different drying methods on the chemical and sensory properties of chestnut (Castanea sativa M.) slices

• Type: Article in International Scientific Journal
• Date: 2017

Authors

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

Journal

The Journal is awaiting validation by the Administrative Services.

Title: EUROPEAN FOOD RESEARCH AND TECHNOLOGY

Vol. 243

Pages: 1957-1971

ISSN: 1438-2377

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 9 Citations

Other information

Authenticus ID: P-00M-SSR

DOI: 10.1007/s00217-017-2902-6

Abstract (EN): The aim of this work was to determine the effect of hot-air convective drying (D), osmotic dehydration (OD), osmotic dehydration + drying (OD + D) and freeze-drying (FD) on chemical and sensorial characteristics of chestnut slices. Proximate composition, sugars, organic acids and lipid profiles were determined along 60 days of storage. Immediately after production, D and FD samples had similar proximate compositions, both with higher fat and protein contents than the osmodehydrated ones, the latter with increased sucrose contents. FD was the method that better preserved starch, amylose, ascorbic and citric acid molecules at day 0, while D originated samples with higher glucose and fructose contents. Along storage, the major variations were observed on organic acids: ascorbic acid decreased on all methods, while fumaric acid increased. Only small variations were observed on the fatty acids and vitamin E profiles and amounts. All samples presented similar and good overall sensorial acceptance with the exception of D. FD was the method that better preserved the sensorial characteristics until 60 days of storage, while D only preserved freshness until 15 days and OD + D until 30 days. In general terms, the most adequate and accepted preservation methods to apply to chestnuts would be FD and OD + D.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15