Provenance variation in wood chemical properties of Acacia mangium willd. and Acacia auriculiformis cunn., grown in a wet humid site in Thrissur district of Kerala, South India

Raphy, K. M. Mohammed; Anoop, E. V.; Aruna, P.; Sheena, V. V.; Ajayghosh, V.

doi:10.1007/s13196-012-0054-7

Cited by 4 publications

(3 citation statements)

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“…The lignin content in wood is between 18 to 35% (Pettersen, 1984). However, a study by Mohammed et al, 2011 Yildiz et al, (2006) and Tumen et al, (2010) which supported this finding in their studies respective studies. There was a strong alteration in lignin structure occurred (Windeisen et al, 2009).…”

Section: Klason Ligninmentioning

confidence: 77%

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Changes in Colour, Strength and Chemical Properties of Oil Heat Treated 18-Years Old Planted Acacia mangium

Wahab

Ghani²,

Samsi³

et al. 2017

IJB

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This study was carried to investigate changes in the oil heat treated 18-years old of planted Acacia mangium. Harvested trees segregated into bottom, middle and top portions containing heartwood and sapwood were oil heat treated in stainless tank with palm crude oil as heating medium at temperatures of 180 o C, 200 o C and 220 o C for 30, 60 and 90 minutes respectively. The evaluation of the changes in the wood were performed by standards using a Minolta Chroma Meter, TAPPI Standard T204 om-88, TAPPI Standard T203 cm-99, TAPPI Standard T222 cm-02, and BS EN 310:1993 static bending tests. The relationship between the changes in the colour, mechanical and chemical composition, were made using correlation analysis. The result showed oil-heat treatment reduced the lightness of the wood and darkened the both parts of the wood. The strength of the wood reduced slightly after the oil-heat treatment. In the chemical compositions, the percentages of the holocellulose, α-cellulose, hemicellulose and extractive contents decrease with the increase in treatment duration and temperature. The oil heat treatment process at 200°C for duration 60 minutes is recommended for acacia mangium wood as it improved the colour of Acacia mangium and standardized the colour of sapwood and heartwood. The loss in strength at this temperature and duration is acceptable as the treated wood only loss up to 15% strength in MOR and 10.7% in MOE.

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Section: Klason Ligninmentioning

confidence: 77%

“…The cellulose content in Acacia mangium ranged 34% to 47.2% (Mohammed et al, 2011). Untreated Acacia mangium possess higher α-cellulose content than treated samples because thermal treatment causes cellulose to degrade due to the split of high-molecular-weight fractions (Kacik et al, 2015).…”

Section: Holocellulosementioning

confidence: 99%

Changes in Colour, Strength and Chemical Properties of Oil Heat Treated 18-Years Old Planted Acacia mangium

Wahab

Ghani²,

Samsi³

et al. 2017

IJB

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show abstract

“…1) containing low lignin and has high potential as a raw material for biofuels production (Rawat et al 2013). A. mangium consists of 45% to 50% cellulose, 25% to 35% hemicellulose, and 15% to 25% lignin (Yahya et al 2010;Raphy et al 2011;Mohd Hazim et al 2017;Takazawa et al 2018). Increasing the cellulose and hemicellulose content of A. mangium can be done through a pretreatment process to reduce the lignin content and to open up the structure for enzymatic attack during enzymatic hydrolysis (Sendelius 2005;Singh et al 2011;Isikhuemhen et al 2014;Xue et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Effect of initial fermentation medium on bioacetone, biobutanol, and bioethanol (BioABE) production from fermentable sugars of Acacia mangium using Clostridium acetobutylicum YM1

Jalil

Kalil

Rahman

et al. 2020

BioRes

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Bioacetone, biobutanol, and bioethanol (BioABE) production is dependent on the fermentable sugars produced from lignocellulosic biomass and on the composition and initial pH of the medium. Understanding these process variables and their interconnectedness could enhance the BioABE product yield. Acacia mangium is available abundantly and it is a potential feedstock for BioABE production. In this study, BioABE was produced from fermentable sugars of A. mangium using Clostridium acetobutylicum YM1. Alkaline treated A. mangium (70 °C, 3 h, 5.50 %w/v NaOH) was further hydrolyzed via enzymatic hydrolysis using a multi-enzyme of white rot fungi to convert it into fermentable sugars. Approximately 15 g/L of fermentable sugars was produced from A. mangium (100 g/L) and was used for BioABE production in comparison with glucose. Initial findings showed that only 0.94 g/L of BioABE was produced in comparison with glucose (2.86 g/L) at a pH of 6.2. Decreasing the initial pH of the medium to 4.50 increased the BioABE (2.87 g/L), and after the medium was supplemented with tryptone-yeast-acetate (TYA), the BioABE yield increased by more than 100% to 6.84 g/L. This study discovered that BioABE produced from A. mangium was comparable to using commercial glucose, thus offering high potential as a low-cost feedstock.

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Mechanical properties and water resistance of Vietnamese acacia and rubberwood after thermo-hygro-mechanical modification

et al. 2020

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Low density and poor mechanical performance often limit utilisation of sawn wood from fast-growing plantation forests. Thermo-hygro-mechanical modification (THM) of timber is one innovation for improving the properties of light-weight wood species. The objective of this study was to determine the effects of THM and subsequent thermal treatment on dry density, modulus of elasticity (MOE), compression strength, Brinell hardness, and swelling behaviour in immersion tests on two fast-growing Vietnamese species, acacia (Acacia mangium) and rubberwood (Hevea brasiliensis). Test boards were modified in an industrial kiln, in which a tangential thickness compression of 14% and 12% were aimed for acacia and rubberwood, respectively, either with or without subsequent thermal treatment at 210 °C. Dry density, MOE, Brinell hardness, compression strength, and dimensional changes in water immersion tests of specimens were measured from the modified and unmodified reference materials, the latter ones being kiln dried at 50 °C. The results showed that the responses of the mechanical properties were more evident for rubberwood than for acacia. In rubberwood, the MOE and compression strength of wood thermo-hygro-mechanically modified with or without thermal treatment were higher than those of kiln-dried reference specimens throughout the thickness profile. In case of acacia, similar differences between the modified and reference specimens were observed only in the surface layer. Density and Brinell hardness of thermo-hygro-mechanically modified rubberwood were higher than those of reference specimens, but after thermal treatment they did not differ from (acacia) or were lower (rubberwood) than those of THM specimens. Post-compression thermal treatment increased the hydrophobicity of THM specimens.

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Provenance variation in wood chemical properties of Acacia mangium willd. and Acacia auriculiformis cunn., grown in a wet humid site in Thrissur district of Kerala, South India

Cited by 4 publications

References 0 publications

Changes in Colour, Strength and Chemical Properties of Oil Heat Treated 18-Years Old Planted Acacia mangium

Changes in Colour, Strength and Chemical Properties of Oil Heat Treated 18-Years Old Planted Acacia mangium

Effect of initial fermentation medium on bioacetone, biobutanol, and bioethanol (BioABE) production from fermentable sugars of Acacia mangium using Clostridium acetobutylicum YM1

Mechanical properties and water resistance of Vietnamese acacia and rubberwood after thermo-hygro-mechanical modification

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