Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/74441
Type: Artigo de periódico
Title: SPRAY DRYING OF ACAI (EUTERPE OLERACEAE MART.) JUICE: EFFECT OF INLET AIR TEMPERATURE AND TYPE OF CARRIER AGENT
Author: Tonon, RV
Freitas, SS
Hubinger, MD
Abstract: Physical and morphological characteristics of powdered acai juice were evaluated in this work. Powders produced by spray drying at different temperatures (140, 170 and 200C) using different carrier agents (maltodextrin 10DE, maltodextrin 20DE and gum Arabic) were evaluated for moisture content, water activity, hygroscopicity, bulk density, particle size distribution and morphology. Sorption isotherms were also constructed. The samples produced with maltodextrin 10DE showed the highest moisture content, water activity and mean diameter and were the less hygroscopic. The increase in drying temperature resulted in particles with lower moisture content, water activity and bulk density. Moreover, powders produced at higher temperatures were more hygroscopic and exhibited a greater number of particles with smooth surface. Sorption isotherms were of type III and showed a better fit to Guggenheim-Anderson-de Boe and Brunauer-Emmett-Teller models.
Country: EUA
Editor: Wiley-blackwell
Rights: fechado
Identifier DOI: 10.1111/j.1745-4549.2011.00518.x
Date Issue: 2011
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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