Abstract
Anecdotal information has linked cool air temperatures before harvest with increased phenolic production in cranberry; however, there is little information available on the effect of temperature on phenolic production in cranberry fruit. The objective of this study was to determine the effect of air temperature throughout the growing season on the concentration of total anthocyanins, total flavonols, and total phenolics at harvest in fruit from seven ‘Early Black’ bogs in southeastern Massachusetts. Contrary to the anecdotal information available, correlations of temperature to fruit composition indicated that warmer temperatures early in the season (around bloom and fruit set) had the most positive impact on total anthocyanins and total flavonols. Total phenolic concentration in the harvested fruit was impacted by air temperature in the preharvest period; however, that relationship was positive.
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