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Statistical Evaluation of Data for Detecting Adulteration of California Navel Orange Juice
Author(s) -
VANDERCOOK CARL E.,
NAVARRO JOSÉ L.,
SMOLENSKY DORA C.,
NELSON DENNY B.,
PARK GARY L.
Publication year - 1983
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1983.tb10807.x
Subject(s) - navel orange , citric acid , mathematics , orange juice , sugar , orange (colour) , linear discriminant analysis , statistical analysis , food science , chemistry , statistics , horticulture , biology
Compositional data from California early‐, mid‐, and late‐season navel orange juice, concentrate and two‐stage pulpwash were analyzed by various statistical techniques (ratios, regression, chi‐square, Linear combination, and discriminant analysis) for detecting adulteration. These techniques were evaluated according to applicability for detecting three types of adulteration: (1) addition of sugar and/or citric acid, (2) addition of excess or unauthorized pulpwash, and (3) addition of other constituents intended to mask the dilution. Most parameters were significantly affected by time of harvest following commercial maturity. Two‐stage pulpwash showed small but significant differences from corresponding single strength juice. Product differences were of about the same magnitude as the differences due to harvest date.