2011
MAS 2011 Proceeding
Modelling NONI (Morinda Citrifolia L.) Pulp Spray Drying Using a Crossed Mixture-Process Design and Feed Optimization
Authors: Eliosbel Márquez González, Débora Castro Espín, Margarita Núñez de Villavicensio, José Luis Rodríguez
Abstract
The effects of noni pulpmaltodextrin (MD) ratio and dry matter (DM) of the feed to the spray drier on different bioactive substances and drying quality attributes of the dried product were evaluated by means of a crossed mixture-process design and the response surface methodology was applied. The mixture components in the feed, noni pulp and MD, were in the 8020 to 9010 range. The process factor was the feed?s DM, at three levels, 10, 15 and 20 g/100g. The experiments took place in a Niro pilot-scale spray dryer. The lowest powder moisture attained by the model, 3.97 %, corresponded to a feed with 15 % DM and 8020 pulpMD ratio. When this ratio is increased, reconstituted product browning also increases with respect to the feed. Maximum ascorbic acid and total phenol were 467 mg/100g and 866 mg gallic acid /100g respectively, corresponding to the 9010 pulpMD ratio. The feed?s DM only had a significant effect on powder moisture.
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