Research on the biochemical quality of fruits on some highbush blueberry cultivars

Authors:
Mihaela Ciucu Paraschiv, Dorel Hoza

Volume 26, Issue 4;
Pages: 357-362; 2020
ISSN: 2069-0053 (print) (former ISSN: 1453-1399), Agroprint;
ISSN (online): 2068-9551
Abstract:
The highbush blueberry (Vaccinium corymbosum L.) is found in the flora of the North-Eastern United States and South-Estern Canada. Blueberries are an important source of antioxidants. These compounds concentration vary according to the cultivars. This study objective was to determine biochemical composition of fruits at optimal harvest maturity on nine varieties. The biochimical indicators studied were: total dry mater content, soluble dry matter, total titrable acidity, sugar content, vitamin C, anthocyanins and polyphenols. Vitamin C was analysed iodometrically, total sugars by Fehling-Soxhlet method, total acidity was measured by titrable method and the soluble dry matter content was determined using a refractometer. Total polyphenols and anthocyanins content of the fruits were analyzed with colorimetric methods. The experimental plot was established in the year 2020 inside a farm from the Arges Meadow. The results of chemical composition analyses showed that the fruits of Compact has a the highes total soluble solid content (16.6%). The highest vitamin C level (15.31 mg/100 g FW) was determined in the fruits of Blueray. Elliot fruits presented higher values of titratable acids content (1.18%), total poliphenol and anthocyanins contents (6383.76 mg GAE/kg FW, respectively 3120.54 mg/kg FW). Elliot variety is distinguished by the highest content of antioxidant compounds.
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