The study was performed on ‘Golden Delicious' apples. The phenolic content was determined in different parts of the peel. Infection with the Venturia inaequalis enhanced the metabolism of phenolics. Compared with the healthy tissue and the tissue around the spot, the scab spot showed higher enzyme activity for all tested enzymes, except for D2'GT. In comparison to the healthy peel, the scab spot showed up to 3.4 times more hydroxycinnamic acids, up to 1.1 times more dihydrochalcones and up to 1.4 times more flavan-3-ols.
COBISS.SI-ID: 6271865
Primary metabolites (sugars, organic acids) and secondary metabolites (phenolics and carotenoids) were quantified in ripe fruit of 11 kaki cvs.: ‘Amankaki’, ‘Cal Fuyu’, ‘Fuji’, ‘Hana Fuyu’, ‘Jiro’, ‘O’Gosho’, ‘Tenjin O’Gosho’, ‘Thiene’, ‘Tipo’, ‘Tone Wase’ and ‘Triumph’. Amongst the analysed cultivars, ‘Tone Wase’ was the richest in sugars and cultivars ‘Tipo’ and ‘Triumph’ in organic acids. Amongst the individual phenolics catechin and gallic acid were present in highest concentrations. The predominant carotenoid was ß-carotene. ‘Hana Fuyu’ contained the highest level of total carotenoids.
COBISS.SI-ID: 6031737
In hazelnut kernels phenols were analysed in 20 hazelnut cvs. with liquid chromatograph– mass spectrometer (HPLC–MS). 23 compounds from different phenolic groups were detected, 9 flavanols, 2 benzoic acids, 3 flavonols and phloretin glycoside. A high content of total phenols was observed in the ‘Tonda Gentile delle Langhe’ and ‘Lewis’ cultivars, which was followed by the ‘Corabel’, ‘Fertile de Coutard’, ‘Daria’ and ‘Tonda Gentile Romana’ cultivars. Similarly, the highest antioxidative activity was also found in the ‘Tonda Gentile delle Langhe’ cultivar, followed by the ‘Fertile de Coutard’.
COBISS.SI-ID: 6373753
Fruits of 'Lapins' cherry on different rootstocks (F 12/1, Maxma 14, Piku 1, Edabriz, Gisela 5, Gisela 195/20, Weiroot 13, Weiroot 158, and Weiroot 72) were analyzed for pomological and biochemical parameters. For the first time, two procyanidins have been identified using HPLC/MS: procyanidin B2 and procyanidin dimer. Fruits on Weiroot 72 and Edabriz had high soluble solids and firmness. Fruits from F 12/1 had the highest values of glucose, fructose, and shikimic acid. The content of phenolics was the highest in fruits on Weiroot 72. The content of anthocyans did not differ among rootstocks.
COBISS.SI-ID: 6252665
The aim of this study was to compare phenolics and antioxidant capacity of four varieties of apple grown under organic and integrated conditions over a 2-year period. The levels of all analysed groups of phenolics were higher in the organically grown apple leaves and fruit. Leaves from organic trees had 10–20% higher content of total phenols than the leaves from trees in the integrated growing system. Organic apples have higher phenolic content and antioxidative capacity in peel than the integrated grown ones.
COBISS.SI-ID: 6373497