20.500.12556/RUL-142617 The effects of the cultivar and environment on the phenolic contents of hazelnut kernels Different climatic conditions are known to affect the synthesis of primary and secondary metabolites. Therefore, the phenolic contents in new growing areas could affect the quality and flavor of hazelnuts. The aim of this study was to determine the variability of the phenolic contents of the kernels in different commercial hazelnut cultivars depending on their growing area. Five cultivars (‘Tonda Gentile delle Langhe’, ‘Merveille de Bollwiller’, ‘Pauetet’, ‘Tonda di Giffoni’, and ‘Barcelona’ (syn. ‘Fertile de Coutard’)) grown in different European collection orchards were included in the study. High-performance liquid chromatography coupled with mass spectrometry was used to identify and quantify the phenolic compounds. Thirteen phenols were identified in the hazelnut kernels, including 7 flavanols, 2 hydroxybenzoic acids, 3 flavonols, and one dihydrochalcone. Catechin and procyanidin dimers were the main phenolic compounds found in the hazelnut kernels. The highest contents of catechin and total flavanols were determined in cultivars cultivated in Spain and northern Italy, and the lowest in Slovenia and France. Flavanols were the major phenolic groups independent of the place of cultivation, as they accounted for more than 50% of all phenolic compounds identified. The flavanols were followed by hydroxybenzoic acids, flavonols, and dihydrochalcones. Higher contents of flavanols and flavonols were found in kernels from areas characterized by higher natural irradiation, which stimulates their accumulation. The contents of hydroxybenzoic acids correlated with altitude, which stimulated phenolic acid synthesis. A negative correlation was observed between the dihydrochalcone content and annual rainfall, probably due to hydric stress. Corylus avellana phenolic compounds quality identification quantification HPLC mass spectrometry fenolne spojine leska kakovost identifikacija kvantifikacija sekundarni metaboliti HPLC masna spektrometrija true false true Angleški jezik Slovenski jezik Članek v reviji 2022-11-16 11:29:24 2022-11-16 11:29:32 2022-11-17 03:45:03 0000-00-00 00:00:00 2022 0 0 Str. 1-15 iss. 22, 3051 Vol. 11 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 634.11/.12 2223-7747 10.3390/plants11223051 129602307 plants-11-03051.pdf plants-11-03051.pdf 1 68FF8779521FA6B5CF7739476025A9C8 db63050c3b3594e86279c540e8074cd5bc0397e68aaec3a879cfdb02bfd53779 4a44413f-659a-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164050 https://www.mdpi.com/2223-7747/11/22/3051 1 74d1dd80-6599-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164049 Biotehniška fakulteta 0 0 0