MATERIALS AND METHODS
Materials. Four types of pomegranate juices were produced
from “Wonderful” pomegranates harvested in California during
October 1998. Juice 1 was obtained in the laboratory from
pomegranate arils by a hand press reaching a soluble solids
(SS) value of 15.5%. Juice 2 was obtained as for juice 1, but in
this case, the arils were frozen and stored for 9 months at -20
°C prior to juice preparation with a SS content of 16.6%. Juice
3 was a single-strength commercial juice produced by Green-
Valley Packers (Arvin, CA) with a 16.6% SS, and juice 4 was
a commercial concentrate juice produced by the same company.
The juice 4 was reconstituted in the laboratory by adding water
to decrease SS from 65.0 to 16.3% as in the original juice. Both
commercial and experimental juices were stored frozen (-20
°C) until analyzed.