The yield and content of some chemical components in fruits of common medlar (Mespilus germanica L.). Part II: Content of some chemical components in fruits of common medlar (Mespilus germanica L.) / | Baltažiedės šliandros (Mespilus germanica L.) derlius ir cheminių junginių kiekis vaisiuose. II dalis: Cheminių medžiagų kiekis vaisiuose.
2007
Waźbińska, Jadwiga,
The study was conducted in the experimental Garden of the University of Warmia and Mazury in Olsztyn and at the Chair of Horticulture in 2002–2004. Fruits of two varieties of common medlar (‘Bredase Reus’ and ‘Westerveld’) were used as the experimental material. The fruits were picked between 20th and 30th of October (before the ground frost period) and examined for the contents of dry substance, sugars, vitamin C and acidity. The examined varieties of common medlar were similar in terms of dry substance content: on the average ‘Bredase Reus’ contained 25.82%, while ‘Westerveld’ – 24.33%. The total sugar content in the fruits of common medlar was 4.46 g in variety ‘Westerveld’ and 4.88 g in ‘Bredase Reus’. The examined varieties contained much more simple sugar than oligo- and polysaccharides. Their content in the examined fruits ranged from 1.67 to 1.73 g / 100 g. The total acidity was about 1.03 g / 100 g in ‘Westerveld’ and 1.22 g / 100 g in ‘Bredase Reus’. The statistical analysis proved the existence of statistically significant differences in vitamin C content between varieties. The fruits of the ‘Bredase Reus’ contained more vitamin C (19.55 mg in 100 g of fresh substance) than these of ‘Westerveld’ (18.66 mg in 100 g of fresh substance).
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