ปรอยฝน เลิศวนวัฒนา. Utilization of Dietary Fiber from Lime Residues in Pineapple Juice. Master's Degree(Food Engineering). King Mongkut's University of Technology Thonburi. : King Mongkut's University of Technology Thonburi, 2005.
Utilization of Dietary Fiber from Lime Residues in Pineapple Juice
Abstract:
Lime residue powder, a rich source of dietary fiber, was used as a food supplement in pineapple juice in this study.
The effects of particle size (38-63, 63-125, 125-180 and 180-250 ?m) and concentration (1-5 percent w/v) of the
powder on the physical characteristics of mixed juice were determined. At 30?C all samples exhibited pseudoplastic
behavior with the flow behavior index (n) between 0.5417 and 0.8639, except for the juice suspended with 1 percent of
powder with the smallest particle size range, which behaved as a Newtonian fluid. An increase in viscosity was observed
for the juice with larger particle sizes and higher concentrations of powder. The characteristics of the mixed juice were also
monitored during storage at 4ํC for 1 week. The viscosity increased significantly after the samples had been subjected to
low temperature. No further changes occurred for prolonged storage period, however. 3 and 5 percent of the fully hydrated
particles of lime residues could be suspended very well in the pineapple juice. The most stable mixture was found for the juice
with 5 percent of powder with particle size range of 38-63 ?m.