Investigation of the biochemical composition of cherries in Latvia
2008
Ruisa, S., Latvia State Inst. of Fruit-Growing, Dobele (Latvia) | Krasnova, I., Latvia State Inst. of Fruit-Growing, Dobele (Latvia) | Feldmane, D., Latvia State Inst. of Fruit-Growing, Dobele (Latvia)
Sweet and sour cherries are favorite fruit crops in Latvia. Recent research in Europe has proven that cherries are a valuable natural source of some bioactive compounds important in the human health preservation, including phenolic compounds, vitamins and minerals. The aim of the investigation was to determine the biochemical composition of sweet and sour cherry cultivars more widely grown in Latvia. Fresh and frozen fruits of 12 sweet cherry and 2 sour cherry cultivars were tested for the composition of soluble solids, total content of organic acids, anthocyans and phenolic compounds during 2005 – 2007 in Latvia State Institute of Fruit-Growing. The biochemical composition of fresh and frozen sweet and sour cherry fruits varied depending on the year of growing and cultivar. The content of soluble solids in sweet cherry fruits varied from 14.4 to 18.1 % depending on the cultivar; in sour cherry fruits – from 10.6 to 17.9 %. The composition of total organic acids in sweet cherry cultivars changed from 0.44 to 1.1 %; in sour cherry cultivars – from 1.3 to 3.0 %. Depending on the cultivar 13.2 – 126.7 mg.100gE-1 of anthocyans were found in sweet cherries, 43.3 – 120.7 mg 100gE-1 – in sour cherry cultivars. The total composition of phenolic compounds varied from 93.4 to 437.8 mg 100gE-1. in sweet cherries and from 439.0 to 637.2 mg.100gE-1 in sour cherries. The content of phenolic compounds in frozen cherries reduced significantly depending on the year of growing and cultivar. The highest composition of phenolic compounds was found in sour cherry cultivar ‘Tamaris’: 637.2 mg 100gE-1.
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