Effect of ultrasonic pre-treatment on low temperature acid hydrolysis of oil palm empty fruit bunch

Yunus, Robiah; Salleh, Shanti Faridah; Abdullah, Norhafizah; Biak, Dayang Radiah Awang

doi:10.1016/j.biortech.2010.07.074

Cited by 123 publications

(65 citation statements)

References 16 publications

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“…The SEM images of the pretreated fiber at 170 and 180 ºC (Figure 3c and 3d) show that some of the silica bodies were still attached to the fiber and some had been removed, leaving a number of empty holes. This result is similar with the study performed by Yunus, et al, [25], who found that low-temperature acid pretreatment caused silica bodies to erode but still remained intact with circular craters. This indicates that a higher temperature is required to form more massive cracks, thus allowing the silica bodies to escape from the fibers.…”

Section: Effect Of Pretreatment On the Morphology Of Opefb Fiberssupporting

confidence: 92%

Disruption of Oil Palm Empty Fruit Bunches by Microwave-assisted Oxalic Acid Pretreatment

Solihat

Sari

Risanto

et al. 2017

J. Math. Fund. Sci.

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Abstract. Developing an effective pretreatment for the conversion of lignocellulosic biomass to ethanol is an important effort in reducing the cost of this process. Microwave-assisted pretreatment is considered a green technology that can effectively break down lignocellulosic structures. The objective of this study was to investigate the most effective temperature for microwave-assisted oxalic acid pretreatment regarding the structural characteristic changes of oil palm empty fruit bunches (OPEFB) fibers. The fibers were subjected to microwave-assisted oxalic acid pretreatment at 160-200 °C with 2.5 minutes heating time and a liquid to solid ratio of 10. The effectiveness of the pretreatment was determined based on its delignification selectivity, morphological characteristics, and functional group changes. Microwave irradiation of OPEFB fibers at 180 ºC was effective in increasing the cellulose content by 24%. This pretreatment resulted in 1.82 delignification selectivity. More than 50% of the hemicellulose of the OPEFB was removed after this treatment, which was confirmed by a decrease of the absorption bands of functional groups at 1732 cm -1 . The increase of pretreatment temperature disrupted the morphological structure of the OPEFB and removed its hemicellulose but did not change its functional groups and lignin content.

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Section: Effect Of Pretreatment On the Morphology Of Opefb Fiberssupporting

confidence: 92%

Disruption of Oil Palm Empty Fruit Bunches by Microwave-assisted Oxalic Acid Pretreatment

Solihat

Sari

Risanto

et al. 2017

J. Math. Fund. Sci.

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show abstract

“…Because of huge developmental potential, commercial cultivation of E. guineensis for palm oil production has come in focus. However, low temperature in these regions (generally lower than 20°C) results in slowing of flower bud differentiation, low fruit yield, and poor economy, subsequently severely affecting the development of oil palm industry in China (Ferwerda, 1977;Yunus et al, 2010;Lei et al, 2014). In-depth study of the species, focused on understating traits to improve breeding and cultivation, has significance and value in industry development.…”

Section: Introductionmentioning

confidence: 99%

Analysis of genetic diversity and population structure of oil palm (Elaeis guineensis) from China and Malaysia based on species-specific simple sequence repeat markers

et al. 2015

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ABSTRACT. Genetic diversity and patterns of population structure of the 94 oil palm lines were investigated using species-specific simple sequence repeat (SSR) markers. We designed primers for 63 SSR loci based on their flanking sequences and conducted amplification in 94 oil palm DNA samples. The amplification result showed that a relatively high level of genetic diversity was observed between oil palm individuals according a set of 21 polymorphic microsatellite loci. The observed heterozygosity (H o ) was 0.3683 and 0.4035, with an average of 0.3859. The H o value was a reliable determinant of the discriminatory power of the SSR primer combinations. The principal component analysis and unweighted pair-group method with arithmetic averaging cluster analysis showed the 94 oil palm lines were grouped into one cluster. These results demonstrated that the oil palm in Hainan Province of China and the germplasm introduced from Malaysia may be from the same source. The SSR protocol was effective and reliable for assessing the genetic diversity of oil palm. Knowledge of the genetic 16248 L.X. Zhou et al.©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (4): 16247-16254 (2015) diversity and population structure will be crucial for establishing appropriate management stocks for this species.

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“…fibers and the hydrolyzed hemicellulose, thereby increasing in the recovery of xylose [14]. From scanning electron microscopy (SEM) observations, our raw sample had no silica bodies on its surface.…”

Section: Resultsmentioning

confidence: 98%

Monosaccharide Recovery from Peat and Peatified Wood by Ultrasonication Pretreatment and Hydrothermal Treatment

Nonaka

Hirajima

Kumagai

2017

IJCCE

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Peat and peatified wood are significant carbohydrate resources in tropical rainforests. The carbohydrates of cellulose and hemicellulose are important sources of monosaccharides for both vital activities and industrial applications, such as furan production of furfural and hydroxymethyl furfural. Hydrothermal treatment at 200˚C and ultrasonic irradiation pretreatment were used to recover monosaccharides from the abovementioned resources. The monosaccharide recovery from peat was shown to be higher than that from peatified wood. The conversion to organic acids is considered to proceed rapidly because acids are always detected with monosaccharides. This conversion is outstripped by the organic acid-to-gas reaction for treatment times longer than 20 min. The monosaccharide recovery from peatified wood was improved by the ultrasonication pretreatment. It is considered that ultrasonic irradiation broke down lignin blockages, enabling water molecules to access the carbohydrates more easily in the subsequent hydrothermal treatment.

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Effect of ultrasonic pre-treatment on low temperature acid hydrolysis of oil palm empty fruit bunch

Cited by 123 publications

References 16 publications

Disruption of Oil Palm Empty Fruit Bunches by Microwave-assisted Oxalic Acid Pretreatment

Disruption of Oil Palm Empty Fruit Bunches by Microwave-assisted Oxalic Acid Pretreatment

Analysis of genetic diversity and population structure of oil palm (Elaeis guineensis) from China and Malaysia based on species-specific simple sequence repeat markers

Monosaccharide Recovery from Peat and Peatified Wood by Ultrasonication Pretreatment and Hydrothermal Treatment

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