2.2.5.1. Sample preparation for sensory test. The sensory tests were
conducted at the Sensory Science laboratory in the Department of
Food Science, University of Arkansas. Orange juice with and
without peptide fraction was prepared in four 1L PET bottles. They
were tested on the same day (Day 0) for the sensory attributes. A
total of 36 panelists were presented with the orange juice samples
(60 mL or 2oz.) for tasting. The excess orange juice was transferred
to a sterile container, the head space was flushed with nitrogen gas
and stored in the refrigerator at 5 C for 14 days for the second
session of the test. The process was repeated on day 14 with 36
panelists tasting the stored orange juice with and without peptides.
Panelists were asked to observe and taste the sample and evaluate
the sample's appearance/overall liking, color, flavor, and texture
using a 9-point hedonic scale ranging from 1 to 9 for “dislike
extremely” to “like extremely.”