Comparison of berry composition of selected Vaccinium species (Ericaceae) with Gaylussacia dumosa11This article is part of a Special Issue entitled “A tribute to Sam Vander Kloet FLS: Pure and applied research from blueberries to heathland ecology”
2012
Forney, Charles F. | Kalt, Wilhelmina | Vander Kloet, Sam P.
The genus Vaccinium contains a wide array of plants distributed throughout the world including several commercial species as well as epiphytic shrubs and lianas in the tropics. Vaccinium dumosum Andrews was reclassified as Gaylussacia dumosa (Andrews) Torr. & A. Gray in 1843 owing to its single seeded 10-locular ovary. Since then, evidence suggests G. dumosa be returned to Vaccinium. In this study, fruit composition of G. dumosa was compared with that of Vaccinium corymbosum L., Vaccinium angustifolium Aiton, Vaccinium gaulteriifolium (Griff.) Hook. f., Vaccinium acrobracteatum K. Sch., and Vaccinium hirsutum Buckley. Ripe fruit from each species were collected and analyzed. In each of the species, primary sugars were glucose and fructose, and acids were quinic, malic, and citric. Total phenolic content correlated with antioxidant capacity. Anthocyanin profiles showed that fruit from each of the species studied contained no pelargonidin glucosides, which are common in fruit of other genera. A total of 27 volatile compounds, dominated by terpenes and several esters, were detected. These volatiles were all found in four of the species including G. dumosa. No volatile compounds were detected in G. dumosa that were not found in the Vaccinium species. Gaylussacia dumosa showed no chemical composition that was significantly different than that of the Vaccinium species surveyed, suggesting that G. dumosa is aligned with Vaccinium.
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