The authors thank Gavin R. Graff, Sandra P. Graham, Michael J. Kelley, and Beverly E. Maleeff. employees of the Eastern Regional Research Center, for their technical assistance; and Eric G. Stone of the USDA, Rutgers University Blueberry and Cranberry Research Center, who provided the blueberry samples.
Leakage of Anthocyanins from Skin of Thawed, Frozen Highbush Blueberries (Vaccinium corymbosum L.)
Article first published online: 25 AUG 2006
Journal of Food Science
Volume 50, Issue 2, pages 432–436, March 1985
How to Cite
SAPERS, G. M., JONES, S. B. and PHILLIPS, J. G. (1985), Leakage of Anthocyanins from Skin of Thawed, Frozen Highbush Blueberries (Vaccinium corymbosum L.). Journal of Food Science, 50: 432–436. doi: 10.1111/j.1365-2621.1985.tb13420.x
Reference to brand or firm name does not constitute endorsement by the U.S. Department of Agriculture over others of a similar nature not mentioned.
- Issue published online: 25 AUG 2006
- Article first published online: 25 AUG 2006
- Ms reveived 6/15/84, revised 9/14/84, accepted 10/4/84
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.