Agronomijas v stis - Latvijas Lauksaimniecības universitāte

Ascorbic acid, mg 100ḡ 112108642a* b**bcddddeeff0BluejayJerseyChandlerBluerayChippewaBluecropBerkeleySpartanNorthlandDukeFigure 3. Ascorbic acid content in highbush blueberry cultivars.*Values, marked with the same letter, are not significantly different at p=0.05.** Bars corresponds the standard error of the mean of the cultivar.The cultivar ‘Bluejay’ had the highest content of ascorbic acid (in average 11.8 mg 100 g -1 ).The titratable acids content in highbush blueberries differed between 0.5 and 1.4 %, similarly tothat reported in the literature (Beaudry, 1992; Saftner et.al., 2008). There were high differencesbetween the cultivars in titratable acid content (Figure 4).1.61.4a*Titratable acids, %1.21.00.80.60.40.2**bcdefgggg0.0ChandlerJerseyBluerayBluecropSpartanBluejayBerkeleyDukeChippewaNorthlandFigure 4. Titratable acid content in highbush blueberry cultivars.*Values, marked with the same letter, are not significantly different at p=0.05.** Bars corresponds the standard error of the mean of the cultivar.The titratable acid content in the berries of the cultivar ‘Chandler’ (1.35 %) were significantlyhigher than in all other evaluated cultivars. The titratable acids content in most of the cultivars didnot exceed 1 % and is low compared to other berry cultivars. It is important for processing to findblueberry cultivars with the higher acidity therefore the cultivar ‘Chandler’ could be more suitablefor the production of juice and other preserves.57