20.500.12556/RUL-135592 Walnut (J. regia) agro-residues as a rich source of phenolic compounds The present study was designed to identify and quantify the major phenolic compounds (phenolics) in the inner and outer husks, buds and bark of the Persian walnut, Juglans regia L. A comparison across six different cultivars grown in Slovenia was also carried out: ‘Fernor’, ‘Fernette’, ‘Franquette’, ‘Sava’, ‘Krka’ and ‘Rubina’. A total of 83 compounds were identified, which included 25 naphthoquinones, 15 hydroxycinnamic acids, 8 hydroxybenzoic acids, 13 flavanols, 2 flavones, 1 flavanone and 19 flavonols. For the first time, 38 phenolics in the husks, 57 phenolics in the buds and 29 phenolics in the bark were presented in J. regia within this study. Naphthoquinones were the major phenolics determined, approximately 75% of all analysed phenolics in the inner husk, 85% in the outer husk, 50% in buds and 80% in bark. The highest content of phenolics was found in the walnut buds, followed by the bark, the inner husk and the outer husk. On the basis of these high phenolic contents, walnut husks, buds and bark represented valuable by-products of the walnut tree. These data also show origin-related phenolic contents across the cultivars, and thus these phenolic profiles might serve to define the origins of different walnut cultivars. hydrojuglone juglone naphthoquinones phenolic compounds 1 4–naphthoquinone bark buds husk oreh Juglans regia lupina fenolne spojine true false true Angleški jezik Slovenski jezik Članek v reviji 2022-03-21 14:42:35 2022-03-21 14:42:35 2022-09-14 04:14:09 0000-00-00 00:00:00 2021 0 0 24 str. iss. 6, art. 535 Vol. 10 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 634.1/.7 2079-7737 10.3390/biology10060535 67153667 RAZ_Medic_Aljaz_2021.pdf RAZ_Medic_Aljaz_2021.pdf 1 23AF5026A50B3BBE035116030E66AF1C e78da1d40bf6f86c734397df9769860df27525015a8e5730854dabb98a00b640 7fc1ecd4-a91d-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=154753 https://www.mdpi.com/2079-7737/10/6/535 1 c4983fb1-a91c-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=154752 Biotehniška fakulteta 0 0 0