Physical and Textural Qualities of Puffed Job’s Tears as Affected by Fluidized-bed Coating Conditions: doi: 10.14456/mijet.2017.10

Pattamaporn Ruksanook; Kriangsak Banlue; Sunisa Roidoung; Srinual Jantathai; Sudathip Inchuen; Wasan Duangkhamchan

Authors

Pattamaporn Ruksanook 0821242425
Kriangsak Banlue Mahasarakham University
Sunisa Roidoung Mahasarakham University
Srinual Jantathai Mahasarakham University
Sudathip Inchuen Mahasarakham University
Wasan Duangkhamchan Mahasarakham University

Keywords:

physical and textural qualities, puffed Job’s tears, fluidized-bed coating

Abstract

This work aims to study the effects of fluidized-bed coating parameters including spraying time (5, 10, 15 min) and inlet air temperature (50, 60, 70 °C) on physical and textural qualities of puffed Job’s tears (PJT) coated with green tea solution. Response surface method associated with two independent variables (spraying time and inlet air temperature) and five responses (moisture content, water activity, chroma, hardness and crispiness) was used, and the optimal coating condition was finally determined. The results showed that both spraying time and inlet air temperature significantly affected all physical and textural qualities of coated PJT except moisture content. Based on the criteria of optimization (target values of control properties), the highest desirability was 0.81 corresponding to spraying time and inlet air temperature of 7 min and 53.4, respectively. Consequently, this fluidized-bed coating condition could be considered as suitable one for puffed Job’s tears.

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