Technological Characterization of Cupressus spp. Wood

Okino, Esmeralda Yoshico Arakaki; Santana, Marcos Antônio Eduardo; Alves, Marcus Vinicius da Silva; Melo, Julio Eustaquio de; Coradin, Vera Terezinha Rauber; Souza, Mário Rabelo de; Teixeira, Divino Eterno; Sousa, Maria Eliete de

doi:10.4322/floram.2011.002

Cited by 12 publications

(11 citation statements)

References 11 publications

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“…However, the holocellulose content obtained was lower than what is expected for the species, and also low when compared to other conifer species. Okino et al (2010) reported that, for the same species and with similar age 71,8% holocellulose values were observed, corroborating with Foelkel and Zvinakevicius (1975), who obtained 71,6% holocellulose and , using 56 years old C. lusitanica wood obtained 62,6% holocellulose.…”

Section: Chemical Analysissupporting

confidence: 77%

“…Likewise, found 7,3% total extractives in 56 years old C. lusitanica plantations, while Okino et al (2010) found a mean value of 4,1% for total extractives, a very close value to the one obtained in this study. In a study with C. lusitanica, C. arizonica and C. sempervirens, Santos et al (2014) observed total extractives values of 3,87; 2,46 and 3,34% respectively.…”

Section: Chemical Analysissupporting

confidence: 64%

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Applicability evaluation of Cupressus lusitanica for pulp production

Almeida

Rios

Cunha

et al. 2016

Maderas, Cienc. tecnol.

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This paper aimed to study Cupressus lusitanica wood tracheids biometrics along radial direction and chemical analysis in order to encourage the use of new forest species for pulp production in southern Brazil. Axial tracheids anatomical analysis was held in 3 positions, in the pith-periphery direction. Total length, total diameter and lumen diameter were analyzed, and wall thickness, flexibility coefficient, wall fraction, felting index and Runkel's ratio were calculated based on these variables. Chemical analysis determined total extractives, sodium hydroxide attack degree, ash, lignin and holocellulose content. For anatomical variables, a statistically significant increase in the pith-periphery direction was observed for total length (L = 5,85mm), for total diameter (D = 47,18 µm), lumen diameter (d = 32,92µm) and wall thickness (e = 14,26µm) was observed stabilization from intermediate section. The species was characterized as with high rigidity tracheids (WF = 61,73%), although being considered "good" for wood pulp production (RI = 0,93). The chemical composition showed high lignin content (L = 36,21%) and low holocellulose content (H = 59,19%). Cupressus lusitanica wood showed appropriate anatomical characteristics to be part of the pulp industry raw material supply. However, chemical properties may compromise the species use due to high lignin content.

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Section: Chemical Analysissupporting

confidence: 77%

Section: Chemical Analysissupporting

confidence: 64%

Applicability evaluation of Cupressus lusitanica for pulp production

Almeida

Rios

Cunha

et al. 2016

Maderas, Cienc. tecnol.

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“…In Roman times, cypress wood was largely used in shipbuilding and other structures in long contact with water (Allevato et al, 2009;Colaianni et al, 2011;Sadori et al, 2015). Cupressus wood is known for its resistance to fungal activity in humid environments (Okino et al, 2010) and its use in shipbuilding, well lining etc., indicates that this property was already recognised in ancient times. Several wrecks revealed the use of cypress wood in ancient naval architecture such as a plank and a wale in Fiumicino 1 (Boetto, 2008), the keel in the Bourse wreck in Marseilles (Rival, 1991), planks and wales in Pantano Longarini (Kampbell, 2007).…”

Section: Cypress Wood Use In Ancient Architecturementioning

confidence: 99%

On the chronology and use of timber in the palaces and palace-like structures of the Sasanian Empire in “Persis” (SW Iran)

Djamali

Chaverdi

Balatti

et al. 2017

Journal of Archaeological Science: Reports

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Timber in an archaeological context can be used to establish chronologies, to understand the history of architecture and to reconstruct cultural landscapes and natural vegetation in the past. In this study, we use the xylological identifications and radiocarbon dating results of five timber fragments recently discovered in three palaces or palace-like structures in Fars (SW Iran) dating back to the period of the Sasanian Empire (224-651 CE). We show that Qal'a-ye Dokhtar, a fortified palace to the north of Firuzabad, was constructed during the power transition from the Parthian to the Sasanian period. On the other hand, the so-called Palace of Ardashir I besides Firuzabad, was accomplished after the power takeover by the Sasanians and the political stabilisation of SW Iran under the reign of Ardashir I (224-240 CE) and his son Shapur I (240-270 CE). We also demonstrate that the 'Palace of Sarvistan' was mainly used right after the fall of the Sasanian Empire during the first centuries of Islamic domination over Iran. The discovery of timber in stone-dominated Sasanian architecture adds information on timber use in the Late Antique Near East. Mediterranean cypress (Cupressus sempervirens L.) was the only timber found in Sasanian palatial architecture, and its use suggests that the tree was one of the major cultivated elements in ancient 'Persis' most probably for its shade, beauty and building timber, but possibly also for its symbolic significance and sacred status to the Zoroastrians. Cypress trees may have played a major role in Persian gardens since antiquity, along with plane trees.

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“…Its light color, anatomical characteristics and easy processing, makes it comparable to some common and commercial hardwood and softwood species, mainly Pinus spp., (Okino et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Biomass and some Mechanical Properties for Cupressus sempervirens and Corymbia citriodora Planted in Serabium Sewage Station

Ismail¹,

Ghorab²,

Abbas³

2018

Journal of Plant Production

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The present study was conducted during 2012 and 2013 in Serabium forest. The aim of this study was to estimate tree biomass and some wood mechanical properties of Cupressus sempervirens L and Corymbia citriodora Hook. The results showed that C. citriodora was superior over C. sempervirens for most of biomass parameters (total and merchantable height, total volume, green and dry weight and total above-ground biomass) at the age of 5 and 7 years. However, the increment percentage of biomass from 5 to 7 years of age was higher in C. sempervirens than C. citriodora. Mechanical properties obtained from the static bending test, Modulus of Elasticity (MOE), Modulus of rupture (MOR), and Tensile strength recorded higher mean values as the trees get older while they recorded lower mean values from base to top within the tree for both species. Mean values of MOE, MOR and Ten.st. for C. sempervirens at age of 7 years old at DBH were 8128.5, 83.0 and 64.4 N/mm 2 ; respectively, while, these values were 15503.5, 158.8 and 149.0 N/mm 2 ; respectively for C. citriodora. These results revealed that, wood mechanical properties for C. citriodora were higher than C. sempervirens.

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Technological Characterization of Cupressus spp. Wood

Cited by 12 publications

References 11 publications

Applicability evaluation of Cupressus lusitanica for pulp production

Applicability evaluation of Cupressus lusitanica for pulp production

On the chronology and use of timber in the palaces and palace-like structures of the Sasanian Empire in “Persis” (SW Iran)

Biomass and some Mechanical Properties for Cupressus sempervirens and Corymbia citriodora Planted in Serabium Sewage Station

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