20.500.12556/DKUM-77135 Fenolne spojine v lubju pri medvrstnih križancih bezga Phenolic Compounds in the Bark of Interspecific Elderberry Hybrids Fenolne spojine, ki so v različnih delih rastlin, tudi v skorji, se omenjajo kot pomembni antioksidanti. V sklopu diplomskega dela smo analizirali vsebnost skupnih fenolnih spojin in topnih taninov v ekstraktih skorje pri različnih medvrstnih križancih bezga. V raziskavo smo vključili 60 medvrstnih križancev in nekaterih vrstah bezga. Za ekstrakcijo fenolnih spojin smo uporabili 50-% vodno raztopino metanola in 70-% vodno raztopino acetona. Vsebnost skupnih fenolnih spojin in topnih taninov smo določili s Folin-Ciocalteu reagentom. Rezultate smo podali v mg GAE (ekvivalent galne kisline)/ g suhe snovi (SS). Skorja bezga v povprečju vsebuje 18,21 mg GAE/g SS skupnih fenolnih spojin, od katerih je 11,06 mg GAE/g SS topnih taninov. Glede na vsebnost skupnih fenolov in topnih taninov obstajajo med različnimi vrstami, kot tudi med različnimi medvrstnimi križanci bezga sorazmerno velike razlike. Phenolic compounds found in various parts of plants, including the bark, are considered as important antioxidants. As part of the presented research, we analyzed the content of total phenolic compounds and soluble tannins in bark extracts in various interspecific hybrids of elderberry. The study included 60 interspecific hybrids and some species of elderberry. A 50% aqueous solution of methanol and a 70% aqueous solution of acetone were used to extract the phenolic compounds. The content of total phenolic compounds and soluble tannins was determined with Folin-Ciocalteu reagent. The results were expressed in mg of gallic acid equivalent (GAE) per g dry matter (DM). Elderberry bark contains an average of 18.21 mg GAE/g DM of total phenolic compounds of which 11.06 mg GAE/g DM are soluble tannins. Depending on the content of total phenols and soluble tannins, there are relatively large differences among species, as well as among different interspecific hybrids of elderberry. bezeg (Sambucus spp.) skorja fenolne spojine tanini elderberry (Sambucus spp.) bark phenolic compounds tannins true true false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2020-08-18 19:05:54 2020-09-01 14:42:14 2022-08-09 14:24:20 2020-09-02 03:21:50 2020 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:UUICJPQS UN_Stajnko_Blaz_2020.pdf UN_Stajnko_Blaz_2020.pdf 1 F08B4CEEA086AB8EA2CE1F7C4BB5773E 0085451fd23c6e5db131229a05f97115549b4649c25cbdb6cdf33d89b5bd3819 761e7c9b-7c11-11eb-bb7a-00155d0001ca 20.500.12556/dkum/0785c24a-62be-4f36-981a-d02cff7f7f60 https://dk.um.si/Dokument.php?lang=slv&id=144303 Fakulteta za kmetijstvo in biosistemske vede 0 0 0