Abstract

Osmotic dehydration as a pretreatment for convection drying is used with the purpose to get high quality dried foods. The effect of osmotic treatment at sucrose concentration of 40 ºBrix and convection drying at 60 and 70 °C (air velocity of 0.8 m/s) were investigated. The quality of dehydrated pineapple was investigated by physicochemical properties, weight loss, textural characteristics, and sensorial parameters. Samples dried at 70 °C showed the fastest drying kinetics reached the required humidity at 2.5 hours. The sensory analysis allows establishing that the dehydrated pineapple at conditions of soluble solids of 40 ºBrix, air temperature of the dryer at 70 °C be the best in acceptability in comparison with samples dried at 60°C. The samples were microbiologically safe for the consumer because they do not present a count of Escherichia coli and molds and yeasts.

Details

Title
Osmotic concentration of pineapple (Cayenne lisse) as a pretreatment for convection drying
Author
Salazar, D M 1 ; Álvarez, F C 1 ; Acurio, L P 1 ; Perez, L V 1 ; Arancibia, M Y 1 ; Carvajal, M G 1 ; Valencia, A F 1 ; Rodriguez, C A 1 

 G+ BioFood & Engineering Group, Department of Food Science and Engineering, Technical University of Ambato. Av. Los Chasquis & Río Payamino, Z.C. 180150, Ambato - Ecuador 
Publication year
2019
Publication date
Jun 2019
Publisher
IOP Publishing
ISSN
17551307
e-ISSN
17551315
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2557841468
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.