Aloe Vera and Nopal mucilage on the reduction of agglomeration during spray drying and storage of blackberry and raspberry extracts

Author:

Andrade González Isaac1ORCID,Chávez Rodríguez Arturo Moisés1,Chávez Rodríguez Alejandra2,Montero Cortes Mayra I1,Farías Cervantes Vania S1ORCID

Affiliation:

1. Departamento de Ingenierías, Tecnológico Nacional de México/Instituto Tecnológico de Tlajomulco Jalisco, Tlajomulco de Zúñiga, Jalisco, Mexico

2. Departamento de Biotecnología, Universidad Politecnica de la Zona Metropolitana de Guadalajara, Cajititlán, Tlajomulco de Zuñiga, Jalisco, Mexico

Abstract

The objective of this investigation was to evaluate the influence of two carrier agents, Nopal and Aloe Vera mucilage on the physicochemical properties and stability of blackberry and raspberry powders obtained by spray drying. A pilot scale spray dryer with a feed flow of 20 L/h and an atomization speed of 28,000 rpm was used. The inlet and outlet air temperatures were from 180 to 80°C, respectively. Yield, moisture content, water activity, hygroscopicity index, solubility time, volumetric density, stability diagrams, micrographs, and particle temperature were evaluated. The highest yields for blackberry extract were 75% with a concentration of 2.5% (w/v) Nopal mucilage, while raspberry extract yielded 65% with a concentration of 5% (w/v) Nopal mucilage. The increase in the concentration of the carrier agent presented an increase in the values of humidity, water activity, volumetric density, and solubility when Nopal mucilage was used as a carrier agent in both blackberry and raspberry extracts. Furthermore, when Aloe Vera mucilage was used as a carrier agent, these same values decreased with increasing concentration. The storage conditions of the powders obtained should be stored at temperatures below 20°C and water activities below 0.4. In addition, the stability diagrams show the particle conditions that should not be exceeded during spray drying.

Publisher

SAGE Publications

Subject

Industrial and Manufacturing Engineering,General Chemical Engineering,Food Science

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