Chemical composition of highbush blueberry cultivars | Krūmmelleņu šķirņu ķīmiskais sastāvs
2009
Kampuse, S., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Food Technology | Šnē, E., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Food Technology | Sterne, D., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture | Krasnova, I., Latvian State Inst. of Fruit-Growing, Dobele (Latvia)
The breeding of blueberries has expanded so far that now the number of the highbush blueberry cultivars has reached several hundreds, and sixty of them are particularly widespread. The chemical composition and suitability for the processing of highbush blueberries has been researched quite extensively, mostly in the USA, but there are no such studies and data for blueberries grown in Latvia. Therefore the aim of this investigation was to compare the biochemical composition of different highbush blueberry cultivars grown in Latvia. The experiments were done at the Faculty of Food Technology, Latvia University of Agriculture (LLU), Jelgava, and at the Latvia State Fruit Growing Institute, Dobele during the year 2008. The samples of highbush blueberry cultivars were collected from the blueberry collection of Institute of Agrobiotechnology (LLU). The contents of titratable acids, soluble solids, ascorbic acid, total phenols, and anthocyanins of frozen fruits of the highbush blueberry cultivars 'Northland', 'Spartan', 'Barkeley', Duke', 'Chippewa', 'Bluecrop', 'Jersey', 'Blueray', 'Chandler', and 'Bluejay' were analysed. The cultivars 'Northland' and 'Chippewa' had the highest anthocyanin content (on average 297.59 and 288.83 mg 100 gE-1, respectively), the highest phenol content was detected in highbush blueberry cultivar 'Spartan' (on average 381.14 mg 100 gE-1), the highest content of ascorbic acid was in cultivar 'Bluejay' (on average 11.8 mg 100 gE-1), the highest titratable acids content in the berries of the cultivar 'Chandler' (1.35 %), and the cultivar with the highest soluble solids content was 'Duke' (on average 12.99 % soluble solids).
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