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Development of delayed bitterness and effect of harvest date in stored juice from two complex citrus hybrids
Author(s) -
Raithore Smita,
Dea Sharon,
McCollum Greg,
Manthey John A,
Bai Jinhe,
Leclair Clotilde,
Hijaz Faraj,
Narciso Jan A,
Baldwin Elizabeth A,
Plotto Anne
Publication year - 2015
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.7105
Subject(s) - flavor , titratable acid , food science , taste , chemistry , cultivar , fruit juice , horticulture , biology
BACKGROUND Mandarins and mandarin hybrids have excellent flavor and color attributes, making them good candidates for consumption as fresh fruit. When processed into juice, however, they are less palatable, as they develop delayed bitterness when stored for a period of time. In this study the kinetics of delayed bitterness in two citrus mandarin hybrid siblings, ‘Ambersweet’ and USDA 1‐105‐106, was explored by sensory and instrumental analyses. In addition to the bitter limonoids, other quality factors (i.e. sugars, acids, pH , soluble solids content ( SSC ), titratable acidity ( TA ) and the ratio SSC / TA ) were also measured. RESULTS The two citrus hybrid siblings had different chemical profiles, which were perceived by taste panels. USDA 1‐105‐106 developed delayed bitterness when the juice was stored for more than 4 h, similar to juice from ‘Navel’ oranges, but ‘Ambersweet’ did not. Bitterness in ‘Ambersweet’ was more affected by harvest maturity, as juice from earlier harvest had lower SSC but higher TA and bitter limonoids. CONCLUSION Since juice of USDA 1‐105‐106 shows delayed bitterness when stored for more than 4 h, this cultivar is not suitable for juice processing. Our finding that siblings can differ in chemical and sensory properties emphasize the importance of post‐processing storage studies before releasing cultivars for juice. Published 2015. This article is a U.S. Government work and is in the public domain in the USA.