This study was carried out to convert unfermented coconut sap or the sweet toddy into powder form through spray drying using maltodextrin (DE 10) as the drying aid. Three different formulations of sweet toddy: maltodextrin (70%: 30%, 80%: 20% and 90%:10%) were spray dried at inlet and outlet temperatures of 165 oC and 65 oC, 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 sweet toddy powder was characterized for moisture content, water activity, crystalline-amorphous nature, particle morphology, sugar profile and the keeping quality. The best powder recovery (56.35±2.90%) was obtained for the formulation of sweet toddy: maltodextrin in the ratio of 80%:20%. The moisture content and water activity value of the spray dried coconut sweet toddy powder were 1.24±0.01% and 0.29±0.00, respectively. It was interesting to note that both the moisture content and the water activity of sweet toddy powder did not vary significantly (p>0.05) on storage of one year. X-ray diffraction studies revealed that the spray dried sweet toddy powder was amorphous. The scanning electron micrograph of spray dried coconut sweet toddy powder showed that the particles were spherical in shape. The sugar profile of this sweet toddy powder showed that it had a total sugar content of 66.1±0.04% out of which 32.7±0.02% was sucrose, 22.4±0.01% was glucose and 11.0±0.01% was fructose.
 
This study was carried out to convert unfermented coconut sap or the sweet toddy into powder form through spray drying using maltodextrin (DE 10) as the drying aid. Three different formulations of sweet toddy: maltodextrin (70%: 30%, 80%: 20% and 90%:10%) were spray dried at inlet and outlet temperatures of 165 oC and 65 oC, 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 sweet toddy powder was characterized for moisture content, water activity, crystalline-amorphous nature, particle morphology, sugar profile and the keeping quality. The best powder recovery (56.35±2.90%) was obtained for the formulation of sweet toddy: maltodextrin in the ratio of 80%:20%. The moisture content and water activity value of the spray dried coconut sweet toddy powder were 1.24±0.01% and 0.29±0.00, respectively. It was interesting to note that both the moisture content and the water activity of sweet toddy powder did not vary significantly (p>0.05) on storage of one year. X-ray diffraction studies revealed that the spray dried sweet toddy powder was amorphous. The scanning electron micrograph of spray dried coconut sweet toddy powder showed that the particles were spherical in shape. The sugar profile of this sweet toddy powder showed that it had a total sugar content of 66.1±0.04% out of which 32.7±0.02% was sucrose, 22.4±0.01% was glucose and 11.0±0.01% was fructose.
การแปล กรุณารอสักครู่..
