Applicability of Foam Mat Drying Process for Production of Instant Cocoa Powder Enriched with Lavender Extract (CROSBI ID 267231)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Buljat, Ana Maria ; Jurina, Tamara ; Jurinjak Tušek, Ana ; Valinger, Davor ; Gajdoš Kljusurić, Jasenka ; Benković, Maja
engleski
Applicability of Foam Mat Drying Process for Production of Instant Cocoa Powder Enriched with Lavender Extract
The foam mat drying process is a simple and economical alternative to spray and freeze drying. It is considerably cheaper due to rapid drying at low temperatures, preservation of nutritional quality and easy reconstitution. Basic principle of the process is conversion of a liquid or a semi-liquid foodstuff to foam and thin layer drying of the foam. This study explores the possibility of the foam mat drying for production of instant cocoa powder enriched with lavender (Lavandula × hybrida L.) extracts. The aqueous extraction of lavender was optimized using Taguchi orthogonal array design. Extracts obtained under optimal conditions were added to a mixture of egg white, cocoa powder, sugar and gelatine. Mixtures were blended for 4 min to obtain stable foam which was dried at three different temperatures (t=50, 60 and 70 °C) and milled into a powdered product. Drying rates were obtained from the experimental data using nonlinear model estimation. Flow properties, bulk density, particle size distribution, reconstitution and sensory properties of the final product were also assessed. Based on the obtained data, the drying process was best described by Page’s drying model. Samples dried at lower temperature (t=50 °C) exhibited the best powder flow and reconstitution properties. Sensory analysis resulted in similar findings: powders dried at lower temperatures had better appearance, colour and taste. The obtained data confirm the suitability of the foam mat drying process for the production of instant cocoa powder enriched with lavender extract.
foam mat drying, cocoa, lavender, powder flow, modelling
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Podaci o izdanju
57 (2)
2019.
159-170
objavljeno
1330-9862
1334-2606
10.17113/ftb.57.02.19.6064
Povezanost rada
Biotehnologija, Prehrambena tehnologija