Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Demarchi, Silvana M.a; b | Giner, Sergio A.a; c; d; *
Affiliations: [a] Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), UNLP-CONICET-CIC, 47 y 116 La Plata (B1900 AJJ), Argentina | [b] Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), 1 y 47 La Plata, Argentina | [c] Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP), 1 y 47 La Plata, Argentina | [d] Comisión de Investigaciones Científicas (CIC), Provincia de Buenos Aires, La Plata, Argentina
Correspondence: [*] Corresponding author: Sergio A. Giner, 47 y 116, (1900) La Plata, Argentina. Tel.: +54 221 4249287; E-mail: saginer@ing.unlp.edu.ar.
Abstract: Conventional and low-calorie rosehip leathers were developed by several drying processes: convective and vacuum drying, both with and without a preconcentration process, and combined with a stage of microwave finish drying. The aim of this study was to reduce the processing time and to improve quality retention, in comparison with the conventional convective drying. The product temperature and moisture content as a function of time were analyzed in each case. Color and ascorbic acid content were measured in the leathers, as indexes of organoleptic and nutritional quality, respectively. Total drying times varied widely, between 120 and 870 min, while diffusion coefficients from 4.60 x10–10 to 52.3 x10–10 m2/s were fitted. The color was mostly affected by a combined time-temperature effect, while ascorbic acid retention showed a dependence on the oxygen partial pressure during drying. The concentration process carried out before drying caused no improvement on the dehydration rate of further convective or vacuum drying nor on product quality. Microwave finish drying led to the lowest processing times though it was detrimental for color and nutritional retention of leathers at an absorbed power level of about 1 W/g. Vacuum drying resulted the best option in this research, as it implied shorter processing time and higher quality retention compared with convective drying.
Keywords: Rosehip leather, drying kinetics, quality
DOI: 10.3233/JBR-190468
Journal: Journal of Berry Research, vol. 10, no. 2, pp. 279-294, 2020
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl