Effects of Spray-Drying Conditions on the Physicochemical Properties of Blackberry Powder

Autor(es)

Ferrari, Cristhiane Caroline ^[1] ; Marconi Germer, Silvia Pimentel ^[1] ; de Aguirre, Jose Mauricio ^[1]

Afiliação do(s) autor(es)

^[1] Inst Food Technol ITAL, Fruit & Vegetable Technol Ctr FRUTHOTEC, BR-13070178 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Drying Technology; v. 30, n. 2, p. 154-163, 2012.
• Citações Web of Science: 75

Resumo

The purpose of this work was to study the effects of spray-drying conditions on the physicochemical characteristics of blackberry powder using a central composite rotatable design. Inlet air temperature (140-180 degrees C) and maltodextrin concentration (5-25%) were employed as independent variables. Moisture content, hygroscopicity, anthocyanin retention, color, powder morphology, and particle size were analyzed. A higher inlet air temperature significantly increased the hygroscopicity of the powder, decreased its moisture content, and led to the formation of larger particles with smooth surfaces. Powders produced with higher maltodextrin concentrations were less hygroscopic, slightly lighter and less red, and had a lower moisture content. Anthocyanin retention was mainly affected by drying temperature due to the heat sensitivity of the pigment. The optimal processing conditions were an inlet air temperature of 140-150 degrees C and maltodextrin concentration of 5-7%. Overall, these results indicate that good quality powders can be obtained by spray drying, with potential applications for the food industry. (AU)

• Processo FAPESP: 10/02561-1 - Caracterização Físico-Química e Avaliação da Estabilidade do Suco de Amora-Preta em Pó Produzido por Spray Drying
• Beneficiário: Cristhiane Caroline Ferrari
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado