Journal
DRYING TECHNOLOGY
Volume 39, Issue 14, Pages 2092-2104Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/07373937.2020.1753764
Keywords
Antiradical activity; bioactive compounds; closed-loop spray drying; Moringa ethanolic extracts; ultrasound extraction
Categories
Funding
- Mexican Consejo Nacional de Ciencia y Tecnologia (CONACyT)
- Fondo Sectorial de Investigacion para la Educacion [CB-256084]
- Tecnologico Nacional de Mexico (TNM) [5922.16-P]
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The study investigated the retention of different nutrients in dried moringa extract using different carrier materials during spray drying. Maltodextrin DE-10 showed the highest retention of phenolics and ascorbic acid, while precipitated silica exhibited the highest retention of total carotenoids.
Dried moringa (Moringa oleifera) extract was obtained by solid-liquid extraction from moringa fresh leaves with an ethanolic solution (80%) followed by closed-loop spray drying with N-2. This approach avoided the risk of explosion and environmental pollution upon drying. Spray drying was carried out with different inlet-outlet temperatures. Maltodextrin DE-10, beta-cyclodextrin and precipitated silica were used as carrier materials. The highest statistically validated (p < 0.05) retentions (93% total phenolics and 48% ascorbic acid, 71% DPPH and 92% ABTS) were obtained with maltodextrin DE-10. The highest retentions of total carotenoids (72%) were obtained with precipitated silica.
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