Biological performance of Liquidambar orientalis Mill. heartwood

Terzi, Evren; Kartal, S. Nami; Ibanez, Claudia Marcela; Köse, Coşkun; Arango, Rachel A.; Clausen, Carol A.; Green, Frederick

doi:10.1016/j.ibiod.2012.04.025

Cited by 10 publications

(12 citation statements)

References 5 publications

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“…Mass losses have been reported for such specimens in decay resistance tests (Terzi et al 2012). T. palustris degradation caused around a 50% mass loss in the specimens.…”

Section: Mass Loss In Decayed Wood Specimensmentioning

confidence: 92%

“…Details regarding heartwood specimens and decay tests are given in our previous study (Terzi et al 2012 …”

Section: Decayed Wood Specimensmentioning

confidence: 99%

“…According to the ASTM D 2017 classification (ASTM 2010), the heartwood specimens of L. orientalis were "non-resistant" against the T. palustris; however, the specimens were moderately resistant against G. trabeum and T. versicolor based on the average mass losses (Terzi et al 2012).…”

Section: Mass Loss In Decayed Wood Specimensmentioning

confidence: 99%

“…In recent years, various projects regarding protection of L. orientalis trees, development of new plantations, and realization of new management plans for balsam production have been started in Turkey due to the usage of its wood for indoor building and roofing material as well as balsam production (Terzi et al 2012). The influence of fungal degradation on both gymnosperm and angiosperm wood species in terms of anatomical and chemical changes have been studied.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Fungal Deterioration in Liquidambar orientalis Mill. Heartwood by FT-IR and Light Microscopy

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Doğu

Moore

et al. 2013

BioRes

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The chemical and morphological changes in heartwood specimens of Liquidambar orientalis Mill. caused by the white-rot fungus Trametes versicolor and the brown-rot fungi Tyromyces palustris and Gloeophyllum trabeum were studied by wet chemistry, FT-IR, GC-MS analyses, and photo-microscopy. According to GC-MS results, 26 extracts identified in the ethanol/toluene extraction and 17 in the ethanol extraction were found. Heartwood specimens of L. orientalis were highly susceptible to the fungi tested. While 1% NaOH solubility increased 35% in the specimen decayed by T. palustris, only an 8% increase was seen in the specimen exposed to T. versicolor when compared to the control specimen. Decayed wood by T. palustris showed a 5.5% increase in the Klason lignin content when compared to control specimens; however, the Klason lignin content decreased after a T. versicolor attack for 12 weeks. A T. versicolor attack in the cell walls was seen both from the lumina and from the cell corners, and the attack from the cell corners was mainly clear in ray parenchyma cells. An excessive destruction was detected in the wood structure attacked by T. palustris. The cell collapse was caused by a distortion in the plane of the wood cells. This extensive degradation was seen in all types of cell walls. Cracks in the cell walls were also detected in the specimens.

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“…Mass losses have been reported for such specimens in decay resistance tests (Terzi et al 2012). T. palustris degradation caused around a 50% mass loss in the specimens.…”

Section: Mass Loss In Decayed Wood Specimensmentioning

confidence: 92%

“…Details regarding heartwood specimens and decay tests are given in our previous study (Terzi et al 2012 …”

Section: Decayed Wood Specimensmentioning

confidence: 99%

Section: Mass Loss In Decayed Wood Specimensmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of Fungal Deterioration in Liquidambar orientalis Mill. Heartwood by FT-IR and Light Microscopy

Yılgör

Doğu

Moore

et al. 2013

BioRes

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“…(Bozkurt et al 1989;Doğu et al 2002), no detailed investigations have been made on its various properties. Recently, a series of studies were performed to evaluate the resistance of L. orientalis wood and balsam and its main constituents against wood decay, mold fungi, termite and insects, along with its chemical properties Terzi et al 2012). In this study, thermogravimetric analysis (TGA) curves were used to quantify the weight loss and thermal degradation steps and to compare the thermal behavior of wood before and after different extraction procedures that removed different types of extractives.…”

Section: Introductionmentioning

confidence: 99%

Ekstraksiyon işlemleri öncesi ve sonrası Liquidambar orientalis mill. odununun termal davranışı

Terzi¹

2017

İstanbul Üniversitesi Orman Fakültesi Dergisi

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The effect of extractives on the thermal behavior of Liquidambar orientalis Mill. (storax) wood is studied using thermogravimetric analysis (TGA). To evaluate the effects of polar and apolar extractives on the thermal behavior of wood, sawdust samples from the heartwood of L. orientalis are extracted with either cold water (48 h), hot water (48 h), or ethanol/toluene (1:2 v/v) (6 h) prior to thermal analysis. Thermogravimetry (TG) curves show that polar and apolar extractives promote char formation, increase the amount of residue, and improve the thermal behavior of L. orientalis wood. In addition, derivative thermogravimetry (DTG) curves demonstrate that thermal degradation of unextracted and cold water-extracted wood samples occurs in a single step, while a two-step degradation pattern is seen for hot water-and ethanol/toluene-extracted wood samples. It is also observed that first degradation reactions in hot water and ethanol/toluene-extracted wood samples occur faster than those in unextracted and cold water-extracted wood samples. Although there are approximately half the number of extracted apolar compounds compared to polar compounds, the removal of both types of compounds affect the thermal properties of L. orientalis wood to the same degree. It is thus deduced that apolar extractives significantly affect the thermal behavior of L. orientalis wood. Keywords: Wood extractives, thermogravimetric analysis, Liquidambar orientalis, storax wood, thermal degradation, natural fire retardants Ekstraksiyon işlemleri öncesi ve sonrası Liquidambar orientalis mill. odununun termal davranışıÖzet: Liquidambar orientalis Mill. odununun termal davranışı üzerine ekstraktif maddelerin etkisi termogravimetrik analiz (TGA) yöntemiyle incelenmiştir. L. orientalis öz odunundan elde edilen öğütülmüş odun unu örnekleri termal analizler öncesinde polar ve apolar ekstraktiflerin odunun termal davranışı üzerine etkisinin araştırılması amacıyla soğuk su (48 s), sıcak su (48 s) ve etanol/toluen (1:2 v/v) (6 s) ekstraksiyonlarına tabi tutulmuştur. Termogravimetri (TG) eğrileri polar ve apolar ekstraktiflerin kömürleşmiş tabaka oluşumunu desteklediğini, kalıntı madde miktarını artırdığını ve L. orientalis odunun termal davranışını iyileştirdiğini göstermiştir. Türevsel termogravimetri (DTG) eğrileri ise ekstraksiyon işlemi uygulanmamış ve soğuk su ile ekstraksiyonuna tabi tutulmuş odun unu örneklerinde termal bozulmanın tek aşamada gerçekleşirken sıcak su ve etanol/toluen ekstraksiyonuna tabi tutulmuş örneklerde termal bozulmanın iki aşamada gerçekleştiği tespit edilmiştir. Ayrıca, sıcak su ve etanol/toluen ekstraksiyonuna tabi tutulmuş örneklerde ilk termal bozulma reaksiyonlarının ekstraksiyon işlemi uygulanmamış ve soğuk su ile ekstraksiyonuna tabi tutulmuş odun unu örneklerine göre daha hızlı olduğu tespit edilmiştir. Ekstrakte edilen apolar bileşiklerin miktarı polar bileşiklerin yaklaşık yarısı kadar olmasına rağmen apolar bileşiklerin ekstraksiyonunun L. orientalis odununun termal özellikleri üzerine polar bileşikler i...

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