SPRAY-DRYING OF COCONUT TREACLE INTO AN AMORPHOUS POWDER

Authors

  • J. M. M. A. Jayasundera Coconut Processing Research Division, Coconut Research Institute, Bandirippuwa Estate, Lunuwila, 61150, Sri Lanka
  • A. R. Kulatunga Coconut Processing Research Division, Coconut Research Institute, Bandirippuwa Estate, Lunuwila, 61150, Sri Lanka

DOI:

https://doi.org/10.9755/ejfa.v26i8.17581

Keywords:

Coconut treacle, Spray- drying, Maltodextrin, Stickiness, Drying aid

Abstract

We have investigated the amount of drying aid required to produce amorphous coconut treacle powder through spray-drying. Maltodextrin (DE-10) was used as the drying aid. Three different formulations of coconut treacle maltodextrin: water (30%: 20%: 50%, 35%: 15%: 50% and 40%: 10%: 50%) were spray dried at inlet and outlet temperatures of 165°C and 65°C, respectively. Powder recovery in a pilot scale spray-dryer was used as a measure of the ease of spray-drying for a given formulation. The spray-dried coconut treacle powder was characterized for moisture content, water activity, sugar profile and particle morphology. The best powder recovery (58.6±3.5%) was obtained for the formulation of coconut treacle: maltodextrin: water in the ratio of 35%:15%:50%. The initial moisture content and water activity value of the spray-dried coconut treacle powder were 1.04±0.003% and 0.43±0.00%, respectively. It was interesting to note that both the moisture content and the water activity of treacle powder did not vary significantly (p>0.05) on storage of one year. The scanning electron micrograph of spray-dried coconut treacle powder showed that the particles were spherical in shape The morphology of these particles apparently gives a good indication of the coconut treacle powder being amorphous. The sugar profile of this coconut treacle powder showed that it had a total sugar content of 88.2±0.05% out of which 46.6±0.02% was sucrose, 23.0±0.02% was glucose and 18.6±0.01% was fructose.

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Published

2014-06-15

How to Cite

Jayasundera, J. M. M. A., and A. R. Kulatunga. “SPRAY-DRYING OF COCONUT TREACLE INTO AN AMORPHOUS POWDER”. Emirates Journal of Food and Agriculture, vol. 26, no. 8, June 2014, pp. 672-8, doi:10.9755/ejfa.v26i8.17581.

Issue

Section

Regular Articles