Janja Zule (Author), Katarina Čufar (Author), Vesna Tišler (Author)

Abstract

The heartwood of two European larch trees was examined for the content of lipophilic extractives. Hexane was used as a solvent for extractions, while gas chromatography with fl ame ionisation detection and gas chromatography coupled to mass spectrometry were applied for analyses. Different lipophilic groups of compounds, such as fatty acids, resin acids, diterpenoids, sterols, steryl esters and triglycerides were identifi ed and quantitatively evaluated as well as individual low molecular mass components. Distribution of heartwood lipophilics in relation to the trunk heights was also determined and their most likely biological function in wood tissues discussed. The content of hexane extract increased with stem height. Various fatty and resin acids as well as diterpenoid alcohols and sterols were characterized. The predominating lipophilic compounds identifi ed were isopimaric acid and diterpenoid alcohol larixyl acetate. Their average concentrations in examined samples was between 2.0 and 2.5 mg/g. Higher molecular mass lipophilics, e.g. steryl esters and triglycerides, were also present with concentrations between 0.5 and 2.2 mg/g.

Keywords

Larix decidua mill.;macesen;lipofilni ekstraktivi;kromatografija;

Data

Language: Croatian
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
Publisher: Šumarski fakultet, Sveučilišta u Zagrebu: Hrvatsko šumarsko društvo
UDC: 630*813.13
COBISS: 2485129 Link will open in a new window
ISSN: 0012-6772
Views: 960
Downloads: 624
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Other data

Secondary language: English
Secondary title: Lipofilni ekstraktivi srži europskog ariša (Larix decidua Mill.)
Secondary abstract: U radu je prikazan rezultat istraživanja lipofilnih ekstraktivnih tvari u srži dvaju stabala europskog ariša. Kao otapalo za ekstrakciju primijenjen je heksan, a plinska kromatografi ja s plameno-ionizacijskim detektorom i plinska kromatografi ja povezana s masenom spektrometrijom primijenjene su za kemijske analize. Različite lipofilne grupe spojeva, kao masne kiseline, smolne kiseline, diterpenoidi, steroli, sterolni esteri i trigliceridi, identificirane su u uzorcima i kvantitativno su procijenjene. Također su identificirani i procijenjeni pojedini spojevi niskih molekularnih masa. Određena je i raspodjela lipofilnih tvari u srži s obzirom na visinu stabala i objašnjena njihova najvjerojatnija biološka uloga u drvnim tkivima. Sadržaj ekstrakta heksana povećava se s visinom stabla. Različite masne i smolne kiseline, kao i diterpenoidni alkoholi i steroli, također su zastupljeni u srži europskog ariša. Dominantni identifi cirani lipofi lni spojevi jesu isopimarična kiselina i diterpenoidni alkohol. Njihove prosječne koncentracije u ispitivanim uzorcima kreću se između 2,0 i 2,5 mg/g. Lipofilni spojevi veće molekularne mase, npr. sterolni esteri i trigliceridi, također su otkriveni u koncentracijama između 0,5 i 2,2 mg/g.
Secondary keywords: Europski ariš;srž;lipofi lni ekstraktivi;kromatografske tehnike.
File type: application/pdf
Type (COBISS): Not categorized
Pages: str. 305-313
Volume: ǂLet. ǂ66
Issue: ǂšt. ǂ4
Chronology: 2015
DOI: 10.5552/drind.2015.1442
ID: 9142132