Evaluation of Acacia Mangium in Structural Size at Green Condition

Ismaili, Gaddafi; Bakar, B.H. Abu; Rahim, Khairul Khuzaimah Abdul

doi:10.33736/jcest.90.2011

Cited by 6 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This farm consisting of acacia trees ( Acacia mangium ) that grow naturally in the forest with the land area is about two hectares. Acacia belongs to Fabaceae family and is called forest mangrove [59]. The bees collected the nectar mainly from Acacia mangium sap and flowers.…”

Section: Methodsmentioning

confidence: 99%

A Comparative Characterization of Physicochemical and Antioxidants Properties of Processed Heterotrigona itama Honey from Different Origins and Classification by Chemometrics Analysis

et al. 2019

View full text Add to dashboard Cite

Stingless bee honey produced by Heterotrigona itama from different botanical origins was characterised and discriminated. Three types of stingless bee honey collected from acacia, gelam, and starfruit nectars were analyzed and compared with Apis mellifera honey. The results showed that stingless bee honey samples from the three different botanical origins were significantly different in terms of their moisture content, pH, free acidity, total soluble solids, colour characteristics, sugar content, amino acid content and antioxidant properties. Stingless bee honey was significantly different from Apis mellifera honey in terms of physicochemical and antioxidant properties. The amino acid content was further used in the chemometrics analysis to evaluate the role of amino acid in discriminating honey according to botanical origin. Partial least squares-discriminant analysis (PLS-DA) revealed that the stingless bee honey was completely distinguishable from Apis mellifera honey. Notably, a clear distinction between the stingless bee honey types was also observed. The specific amino acids involved in the distinction of honey were cysteine for acacia and gelam, phenylalanine and 3-hydroxyproline for starfruit, and proline for Apis mellifera honey. The results showed that all honey samples were successfully classified based on amino acid content.

show abstract

Section: Methodsmentioning

confidence: 99%

A Comparative Characterization of Physicochemical and Antioxidants Properties of Processed Heterotrigona itama Honey from Different Origins and Classification by Chemometrics Analysis

et al. 2019

View full text Add to dashboard Cite

show abstract

“…For example, Ismaili et al reported a basic density of 540 kg/m 3 for A. mangium grown in Malaysian Borneo. 25 Other studies have reported basic densities of 464 and 494 kg/m 3 for A. mangium grown in Malaysia. 26,27 The density of E. pellita grown at a plantation in Indonesian Borneo has been reported to vary from 556 to 652 kg/ m 3 .…”

Section: Acid Sulfite Cooking Experimentsmentioning

confidence: 94%

Acid sulfite pulping of Acacia mangium and Eucalyptus pellita as a pretreatment method for multiproduct biorefineries

Fiskari

Kilpeläinen

2021

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Conversion of biomass into saleable biochemicals and fuels requires the use of a pretreatment to enable subsequent processing. Acid sulfite pulping is one of the most cost-effective strategies, because the chemicals are inexpensive and the technology is available on an industrial scale. It also allows the simultaneous production of cellulosic fibers and lignosulfonate. However, too little is known about the feasibility of acid sulfite pulping of tropical hardwoods. The objective of this research was to gain a better understanding of the response of Acacia mangium and Eucalyptus pellita in acid sulfite pulping. The plantationgrown hardwood chip samples were obtained from Sabah, Malaysia. The sulfite cooking experiments were carried out in autoclaves with temperatures of 130 C and 140 C and varied chemical charges. The results revealed that a cooking temperature of 140 C was needed to reach kappa numbers below 30, but this also resulted in much reduced fiber length and higher fines content than 130 C, probably due to the intensified acid hydrolysis. To reach kappa numbers below 20, more severe cooking conditions are needed. These results demonstrate that using A. mangium and E. pellita as feedstocks allows feasible production of chemical pulp and sulfonated lignin, which are intermediate products for biorefineries.

show abstract

“…The constant loading speed was 0.6 mm/min. The shear parallel to the grain strength at maximum load was obtained using Equation (5).…”

Section: Shear Parallel To Grain Determinationmentioning

confidence: 99%

“…Jusoh et al [3] stated that these superbulk species have characteristics of a high growth rate, high volume, good stem form, and resistance to heart rot compared with the origin species. The Acacia mangium is a species of the family Leguminosae, which was introduced into Sabah in 1967 [4,5] and was also found in Queensland, Australia; Papua New Guinea; the Islands of Sula, Ceram, and Aru; and Irian Jaya [6]. The trees of this species are generally large and can grow to a height of 30 m with a straight bole [7].…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Strength Properties, Treatability Retention and Hazard Classification of Treated Small-Clear Fast-Growing Acacia mangium Superbulk at Different Age Groups

Yahya

Ismaili

Meekiong

et al. 2023

Forests

View full text Add to dashboard Cite

The slow growth rate of primer species has affected the supply available to accommodate the market demand. To overcome these problems, a study was carried out to fully utilise fast-growing timber as the primary resource to ensure the demand for timber logs continues. This paper aimed to determine mechanical strength properties, treatability retention, and hazard classification of 7-, 10- and 13-year-old small-clear samples of Acacia mangium superbulk collected from Daiken Plantation Sdn. Bhd. Bintulu, Sarawak, following treatment with 10% copper chrome arsenic. As a result of this study, the maximum strength was obtained from the 10-year-old age group, with the modulus of rupture (MOR), the modulus of elasticity (MOE), and compression parallel to the grain values of small-clear treated Acacia mangium superbulk reaching 118.76 N/mm2, 15,020 N/mm2, and 57.82 N/mm2, respectively. In addition, the treatability retentions obtained were 149.27 L/m3, 147.25 L/m3, and 141.09 L/m3, which were recorded from the 7-, 10-, and 13-year-old samples, respectively. Meanwhile, the dry-salt retentions obtained from the 7-, 10- and 13-year-old samples were 14.93 kg/m3, 14.73 kg/m3, and 14.11 kg/m3, respectively. Hence, this species is classified as moderately difficult to treat under CCA (treatability retention: 80–160 L/m3) and is categorised under the hazard class of H4 (dry salt retention: 12–16 kg/m3).

show abstract

Evaluation of Acacia Mangium in Structural Size at Green Condition

Cited by 6 publications

References 1 publication

A Comparative Characterization of Physicochemical and Antioxidants Properties of Processed Heterotrigona itama Honey from Different Origins and Classification by Chemometrics Analysis

A Comparative Characterization of Physicochemical and Antioxidants Properties of Processed Heterotrigona itama Honey from Different Origins and Classification by Chemometrics Analysis

Acid sulfite pulping of Acacia mangium and Eucalyptus pellita as a pretreatment method for multiproduct biorefineries

The Mechanical Strength Properties, Treatability Retention and Hazard Classification of Treated Small-Clear Fast-Growing Acacia mangium Superbulk at Different Age Groups

Contact Info

Product

Resources

About