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Leakage of Anthocyanins from Skin of Thawed, Frozen Highbush Blueberries ( Vaccinium corymbosum L.)
Author(s) -
SAPERS GERALD M.,
JONES SUSAN B.,
PHILLIPS JOHN G.
Publication year - 1985
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.1365-2621.1985.tb13420.x
Subject(s) - berry , vaccinium , anthocyanin , chemistry , ripeness , bilberry , ericaceae , cultivar , food science , calyx , botany , horticulture , biology , ripening
Factors affecting the tendency of thawed blueberries to leak pigmented exudate were investigated. Drip and anthocyanin leakage rates (ALR) were determined spectrophotometrically. Leakage vs time curves were linear or two‐phase linear, ALR varying with cultivar, ripeness, and berry condition. Dewaxing increased ALR with most cultivars. ALR did not correlate with berry anthocyanin content, surface area, or cuticle thickness. ALR and amount of drip were poorly correlated. ALR varied from berry‐to‐berry within samples. Leakage was observed to be nonuniform on berry surfaces, appearing at skin cracks and ruptures, the calyx area, and other point sources. An hypothesis relating leakage to skin condition, fluid accumulation, and anthocyanin content is presented.