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Title: Anatomske, kemijske in sorpcijske lastnosti beljave in jedrovine rdečega bora Authors: ID Merela, Maks (Author) ID Turičnik, Vanja (Author) ID Vek, Viljem (Author) ID Oven, Primož (Author) Files: PDF - Presentation file, download (951,39 KB) MD5: CBAB9BC975FFEB29B2924D9366DFBFE6   URL - Presentation file, visit https://doi.org/10.20315/ASetL.119.4   Language: Slovenian Typology: 1.01 - Original Scientific Article Organization: SciVie - Slovenian Forestry Institute Abstract: V pričujoči študiji smo preučevali anatomske, kemijske in izbrane fizikalne lastnosti beljave in jedrovine rdečega bora (Pinus sylvestris L.) in tudi morebitni vpliv ekstraktivov na sorpcijske lastnosti borovine. Študija je bil opravljena na 6 testnih drevesih. Anatomske preiskave so bile narejene s klasično svetlo-poljsko mikroskopijo. Preiskovanje vzorcev za določanje dimenzijske stabilnosti in sorpcijskih lastnosti je potekalo po uravnovešanju v steklenih klima komorah. Vzorce za kemijsko analizo smo ekstrahirali s cikloheksanom ter z zmesjo acetona in vode, delež celokupnih fenolov pa smo kolorimetrično določili z UV-Vis spektrofotometrijo. Razlike med beljavo in jedrovino so se pokazale v smolnih kanalih, v lumnih aksialnih traheid ob trakovih ter v trakovnih parenhimskih celicah in v obokanih piknjah. Delež ekstraktivnih snovi v jedrovini je bil večji kot v beljavi. Preiskave beljave in jedrovine niso pokazale statistično značilnih razlik v gostoti v absolutno suhem stanju, pri točki nasičenja celičnih sten, diferencialnem nabrekanju v radialni smeri in ne pri koeficientu nabrekanja v tangencialni smeri. Izkazalo se je, da se prečna krčitvena anizotropija, diferencialni nabrek v tangencialni smeri, koeficient nabrekanja v radialni smeri ter sorpcijski kvocient razlikujejo pri beljavi in jedrovini rdečega bora. Omenjene razlike lahko pripišemo vzajemnemu učinku anatomskih in kemičnih značilnosti obeh kategorij lesa, vsekakor Keywords: rdeči bor, Pinus sylvestris L., sorpcijske lastnosti, beljava, jedrovina, ekstraktivi, anatomija lesa Publication status: Published Publication version: Version of Record Year of publishing: 2019 Number of pages: str. 43-54 Numbering: Vol. 119 PID: 20.500.12556/DiRROS-10362  UDC: 630*81(045)=163.6 ISSN on article: 2335-3112 DOI: 10.20315/ASetL.119.4  COBISS.SI-ID: 5516198  Publication date in DiRROS: 16.10.2019 Views: 6520 Downloads: 3286 Metadata:    Cite this work Plain text BibTeX EndNote XML EndNote/Refer RIS ABNT ACM Ref AMA APA Chicago 17th Author-Date Harvard IEEE ISO 690 MLA Vancouver : Copy citation

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Record is a part of a journal

Title:	Acta Silvae et Ligni
Publisher:	Gozdarski inštitut Slovenije, založba Silva Slovenica, Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire, Biotehniška fakulteta, Oddelek za lesarstvo
ISSN:	2335-3112
COBISS.SI-ID:	266761216

Secondary language

Language:	English
Title:	Anatomical, chemical and sorption properties of sapwood and heartwood of Scots pine
Abstract:	In the case of Scots pine (Pinus sylvestris L.), anatomical differences between the sapwood and heartwood were researched, the content of extractives in the sapwood and heartwood defined, hygroscopicity of sapwood and heartwood studied, so as the relationship between the content of extractives and sorption properties. Research was carried out on 6 test trees. Anatomical investigations were performed using the classic light-field microscopy. Investigation of samples for determination of dimensional stability and sorption properties was held by conditioning in the glass-air condition chambers. Samples for chemical analysis were extracted with cyclohexane and a mixture of acetone and water, and the proportion of total phenols was determined by UV-Vis spectrophotometry. The differences between the sapwood and heartwood were in the resin canals, in the lumens of axial tracheids along the rays as well as differences in parenchymal cells and bordered pits. The content of extractives in the heartwood was higher than in the sapwood. Investigations of the sapwood and heartwood did not show statistically significant differences in the density in the absolutely dry state, at the point of saturation of cell walls, in the volume shrinkage, and not in the coefficient of swelling in the radial direction. We found differences between the sapwood and heartwood transverse anisotropy, differential swell in the tangential direction, in the coefficient of swelling in the radial direction and the sorption quotient. These differences can be attributed to mutual effect of the anatomical and chemical characteristics of both types of wood and when interpreting indicators
Keywords:	Scots pine, Pinus sylvestris L., sorption properties, sapwood, heartwood, extractives, wood anatomy

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1. Acta Silvae et Ligni

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