20.500.12556/RUL-136341 Identification and quantification of naphthoquinones and other phenolic compounds in leaves, petioles, bark, roots, and buds of Juglans regia L., using HPLC-MS/MS The present study was designed to identify and quantify the major phenolic compounds in different Juglans regia L. (common walnut) tissues (leaves, petioles, bark, roots, buds), to define the compositions and contents of phenolic compounds between these tissues. A total of 91 individual phenolic compounds were identified and quantified, which comprised 8 hydroxycinnamic acids, 28 hydroxybenzoic acids, 11 flavanols, 20 flavonols, 22 napthoquinones, and 2 coumarins. Naphthoquinones were the major phenolic group in leaves, petioles, bark, and buds, as >60% of those identified, while hydroxybenzoic acids were the major phenolic group in side roots, as ~50% of those identified. The highest content of phenolic compounds was in the J. regia main root, followed by side roots and buds, leaves, and 1-year-old bark; the lowest content was in petioles and 2-year-old bark. Leaves, roots, and buds of J. regia represent a valuable source of these agro-residues. Juglans regia L. walnut leaf petiole bark root bud phenolic compounds naphthoquinones oreh Juglans regia kemična sestava sekundarni metaboliti fenolne spojine true false true Angleški jezik Slovenski jezik Članek v reviji 2022-04-25 12:37:30 2022-04-25 12:37:31 2022-09-15 04:13:46 0000-00-00 00:00:00 2021 0 0 13 str. iss. 9, art. 326 Vol. 7 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 634.1/.7 2311-7524 10.3390/horticulturae7090326 77587203 horticulturae-07-00326-v2.pdf horticulturae-07-00326-v2.pdf 1 A2B72412EB4D75A233CFA019FEF2A854 ca18944a2419372d355fee7e128d8c696f726061b379b77047d220e080704eb7 e8e06f48-c483-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155932 https://www.mdpi.com/2311-7524/7/9/326 1 a29dd912-c483-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155931 Biotehniška fakulteta 0 0 0