Cultivar and seasonal variation in bioactive
compounds of highbush blueberry fruits (Vaccinium corymbosum L.)
Barbara Łata, Marzena Wińska-Krysiak
Laboratory of Basic Sciences in Horticulture
Warsaw University of Life Sciences
Nowoursynowska 159, 02-776 Warsaw, Poland
Seasonal and cultivar variations of the phenolic, thiol, and ascorbate compound contents as well as the antioxidative
enzyme activity in six cultivars of highbush blueberry were investigated. Berries of the ‘Earlyblue’, ‘Patriot’,
‘Bluecrop’, ‘Duke’, ‘Darrow’ and ‘Lateblue’ cultivars were sampled in 2005 and 2006. Chlorogenic acid, (-)-epicatechins, and
ascorbate contents and CAT activity were found to be at the lowest degree affected by growing season conditions. ‘Seasonal
effect’ had, however, a huge impact on the GR activity, as well as L-cysteine and glutathione content, suggesting that the
glutathione system was highly influenced through growing factors in blueberry fruit. Berries of ‘Earlyblue’ were the richest
source of antioxidants, at the same time revealing their quite stable quantity over the examined years. The second highest
in bioactive stability was ‘Duke’, classified as medium with respect to antioxidant content.
Łata B., Wińska-Krysiak M., 2010. Cultivar and seasonal variation in bioactive
compounds of highbush blueberry fruits (Vaccinium corymbosum L.). Folia Horticulturae 22/1: 31-35.