The Effect of Maltodextrin on Qualities of Instant Che - Mei Tea Powder

Authors

  • Kamontip Kanpairo

Abstract

The objective of this work is to study drying process optimization of Che - Mei Tea using vacuum evaporator and treating with maltodextrin (10%, 20%, 30%, 40% and 50% w/ v) as a drying aid in the first step. After drying in tray hot air oven, the samples were taken to sensory evaluation testing using 9-point hedonic scale (appearance, color, smell, flavor and overall liking) with 50 panelists. The result indicated that the tea powder having 20% maltodextrin was the best with the overall liking score 6.49. The determination of physical properties and chemical analysis including L* a* b*, moisture content (%), water activity (Aw), solubility (%), density (g/mL) was 76.75, 2.94, 14.41, 6.36, 0.51, 48.17 and 0.85, respectively. For the physical and chemical change of tea powder in 2 packages (aluminum foil and LLDPE, linear low-density polyethylene) after storing at room temperature (29±2 oC) for 90 days, it was found that package and storage temperature significantly affected the physical and chemical change. The color tended to be browner, Aw and moisture content increased, solubility decreased and the best condition to keep tea powder stable was keeping in aluminum foil. Keywords : instant tea powder ; Che-Mei tea ; maltodextrin

Author Biography

Kamontip Kanpairo

   

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Published

2020-09-01