20.500.12556/DiRROS-10357
Vsebnost ekstraktivov v skorji in lesu robinije (Robinia pseudoacacia l.)
Content of extractives in bark and wood of Black locust (Robinia pseudoacacia l.)
Raziskali smo vsebnost in sestavo ekstraktivov v lesnih tkivih in skorji robinije (Robinia pseudoacacia L.). Vzorce njenega lesa in skorje smo ekstrahirali v aparatu Soxhlet z acetonom. Acetonske ekstrakte smo preiskali gravimetrično in s tem izmerili vsebnost skupnih hidrofilnih ekstraktivov. Z UV-Vis spektrofotometrom smo kolorimetrično izmerili vsebnost skupnih fenolov. Ekstrakte lesa in skorje robinije smo nato detajlno preiskali s sistemom za tekočinsko kromatografijo visoke ločljivosti (HPLC). S to tehniko smo v ekstraktih identificirali in kvantitativno ovrednotili dihidrorobinetin. Največje vsebnosti skupnih hidrofilnih ekstraktivov, skupnih fenolov in dihidrorobinetina smo izmerili v vzorcih jedrovine. Značilno manj ekstraktivov je bilo v vzorcih beljave in skorje. Aksialne variabilnosti v vsebnosti topnih komponent za les in skorjo robinije nismo dognali. Ugotovili smo, da je jedrovina robinije bogat vir fenolnih ekstraktivov.
The content and composition of extractives in the wood and bark tissue of black locust (Robinia pseudoacacia L.) were investigated. Wood and bark samples were extracted using a Soxhlet apparatus with acetone. The extracts were gravimetrically examined to measure total hydrophilic extractive content. Total phenolic content was measured colorimetrically with a UV-Vis spectrophotometer. The wood and bark extracts were further investigated using high-pressure liquid chromatography (HPLC) to identify and quantify dihydrorobinetin in the extracts. The contents of total hydrophilic extractives, total phenols and dihydrorobinetin were higher in heartwood than in the sapwood and bark. No relationship was found between the height at which the samples were taken from the stem and the content of soluble components in the wood and bark. The heartwood of black locust represents a rich potential source of phenolic extractives.
robinija
ekstraktivi
HPLC
dragocene spojine
biorafinarije
black locust
extractives
HPLC
value-added compounds
biorefinery
true
false
true
Slovenski jezik
Angleški jezik
Neznano
2019-10-10 13:47:39
2019-10-10 13:47:40
2022-08-15 03:37:55
0000-00-00 00:00:00
2019
0
0
str. 13-25
Vol. 119
2019
0000-00-00
Zaloznikova
Objavljeno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
630*81(045)=163.6
2335-3112
10.20315/ASetL.119.2
5472934
266761216
RAZ_Vek_Viljem_i2019.pdf
RAZ_Vek_Viljem_i2019.pdf
1
34D6B6B2524D73AAF41C5B05541FCADF
d1558cda03573b3ffd9c73ad4d576f279b1f50a786069c3d77ce7ef90f2386be
c01026c2-17b5-11ed-b6b8-001a4af901a5
https://dirros.openscience.si/Dokument.php?lang=slv&id=12375
https://doi.org/10.20315/ASetL.119.2
1
https://dirros.openscience.si/Dokument.php?lang=slv&id=12365
Gozdarski inštitut Slovenije
Acta Silvae et Ligni
0
0
0