Enzymatic Saccharification of Oil Palm Mesocarp Fiber (OPMF) Treated with Superheated Steam

Mahmud, Nik Anis Nik; Baharuddin, Azhari Samsu; Bahrin, Ezyana Kamal; Sulaiman, Alawi; Naim, Mohd Nazli; Zakaria, Rabitah; Hassan, Mohd Ali; Nishida, Haruo; Shirai, Yoshihito

doi:10.15376/biores.8.1.1320-1331

Cited by 16 publications

(27 citation statements)

References 15 publications

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“…Zakaria et al (2015a) also reported that the formation of inhibitors, such as hydroxymethylfurfural, and phenolic compounds at higher pretreatment severities could also be detrimental to the enzyme. This finding was in agreement with Mahmud et al (2013), who reported a decrease in the hydrolysis rate from 58.28% to 33.23% with an increase in the pretreatment temperature from 180 to 210 °C for OPMF treated with super-heated steam. It is essential that the dosage of enzyme is minimized to reduce the cost of production.…”

Section: Effect Of Enzyme Loading On Sugar Production and Saccharificsupporting

confidence: 93%

“…At 10 min and 220 °C pretreatment condition the weight loss (42.27%) was seen to be the highest compared to the 2, 4, and 7 min residence times. This result was similar to that reported by Mahmud et al (2013), who demonstrated an increase in the weight loss from 3.41% to 18.17% after the super-heated steam pretreatment of oil palm mesocarp fibre (OPMF). According to Zakaria et al (2014), the weight loss of hydrothermally pretreated OPMF was highest when the harshest pretreatment severity was carried out.…”

Section: Effect Of Hpsp On Weight Loss Ph and Chemical Composition supporting

confidence: 91%

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Influence of High-Pressure Steam Pretreatment on the Structure of Rice Husk and Enzymatic Saccharification in a Two-Step System

et al. 2017

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This study aimed at developing an operational high-pressure steam pretreatment (HPSP) to effectively modify rice husk for enzymatic saccharification. The HPSP was performed at 160 to 200 °C under 0.3 to 2.8 MPa for 2 to 10 min. The efficiency of this method was based on the chemical composition, scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and X-ray diffraction (XRD) analyses. Optimum pretreatment conditions (200 °C, 1.85 MPa for 7 min), enzyme concentration at 30 FPU/g and temperature at 60 °C for 48 h of continuous saccharification effectively produced sugar (21.1 g/L = 0.422 g/g dry substrate) at a saccharification degree of 53.87%. Conducting a secondstep enzymatic saccharification resulted in additional sugar production (7.9 g/L = 0.158 g/g substrate) and a 20.44% saccharification degree. In contrast, the two-step saccharification process (48 and 24 h) achieved optimal sugar yield of 0.581 g/g substrate and saccharification degree of 73.5%. Additionally, the process improved the yield of monomeric sugars of glucose (0.465 g/g), xylose (0.010 g/g), and cellobiose (0.063 g/g). Therefore, the combination of the high-pressure steam pretreatment with thermostable cellulase from Bacillus licheniformis 2D55 in a two-step enzymatic saccharification process is an economically viable method in rice husk bioprocessing for sugar production.

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Section: Effect Of Enzyme Loading On Sugar Production and Saccharificsupporting

confidence: 93%

Section: Effect Of Hpsp On Weight Loss Ph and Chemical Composition supporting

confidence: 91%

Influence of High-Pressure Steam Pretreatment on the Structure of Rice Husk and Enzymatic Saccharification in a Two-Step System

et al. 2017

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“…Several pretreatments can be applied to oil palm biomass such as chemical, mechanical and hydrothermal treatment in order to overcome this hindrance. Pretreatment involving hot compressed water (HCW), liquid hot water (LHW), steam, and superheated steam (SHS) are gaining interest recently, as these treatments are more environmental friendly, and time saving for enzymatic saccharification of natural biomass (Yu et al, 2011;Inoue et al, 2008;Weiqi et al, 2013;Yunos et al, 2012;Nik Mahmud et al, 2013). Superheated steam is unsaturated (dry) steam generated by the addition of sensible heat to saturated (wet) steam (Bahrin et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal and wet disk milling pretreatment for high conversion of biosugars from oil palm mesocarp fiber

Zakaria

Norrrahim

Hirata

et al. 2015

Bioresource Technology

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Eco-friendly pretreatment methods for lignocellulosic biomass are being developed as alternatives to chemical based methods. Superheated steam (SHS), hot compressed water (HCW) and wet disk milling (WDM) were used individually and with combination to partially remove hemicellulose and alter the lignin composition of recalcitrant structure of oil palm mesocarp fiber (OPMF). The efficiency of the pretreatment methods was evaluated based on the chemical compositions altered, SEM analysis, power consumption and degree of enzymatic digestibility. Hemicellulose removal (94.8%) was more pronounced under HCW compared to SHS, due to maximal contact of water and production of acetic acid which enhanced further degradation of hemicellulose. Subsequent treatment with WDM resulted in defibrillation of OPMF and expansion of the specific surface area thus increasing the conversion of cellulose to glucose. The highest glucose yield was 98.1% (g/g-substrate) when pretreated with HCW (200 °C, 20 min) and WDM which only consumed 9.6 MJ/kg of OPMF.

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“…OPMF is used as biomass fuel and is inefficiently burnt for energy generation by steam boiling (Ali et al 2015;Zakaria et al 2015). Oil palm mesocarp fiber, found in nature, has similar characteristics to EFB in terms of chemical composition; OPMF has potential for other uses, such as biosugar production (Mahmud et al 2013;Zakaria et al 2015) and as a reinforcing material in biocomposites (Sreekala and Thomas 2003;Then et al 2013).…”

Section: Introductionmentioning

confidence: 99%

“…The interfacial bonding of fiber-polymer can be improved by diminishing the hemicellulose component in the fiber (Han et al 2009;Eslam et al 2011;Hosseinaei et al 2012;Kaewkuk et al 2013). Hydrothermal and steam treatments such as superheated steam (SHS) (Bahrin et al 2012;Mahmud et al 2013;Then et al 2014), hot-water extraction (Eslam et al 2011;Hosseinaei et al 2012), and steam explosion (Ando et al 2000;Han et al 2009) reduce the hemicellulose content of fiber.…”

Section: Introductionmentioning

confidence: 99%

Superheated Steam Treatment of Oil Palm Mesocarp Fiber Improved the Properties of Fiber-Polypropylene Biocomposite

Nordin¹,

Ariffin²,

Hassan³

et al. 2016

BioResources

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The effect of fiber surface modification by superheated steam (SHS) treatment and fiber content (30 to 50 wt.%) was evaluated relative to the mechanical, morphology, thermal, and water absorption properties of oil palm mesocarp fiber (OPMF)/polypropylene (PP) biocomposites. SHS treatment of OPMF was conducted between 190 and 230 C for 1 h, then the SHS-treated fiber was subjected to melt-blending with PP for biocomposite production. The biocomposite prepared from SHS-OPMF treated at 210 C with 30 wt.% fiber loading resulted in SHS-OPMF/PP biocomposites with a tensile strength of 20.5 MPa, 25% higher than untreated-OPMF/PP biocomposites. A significant reduction of water absorption by 31% and an improved thermal stability by 8% at T5%degradation were also recorded. Scanning electron microscopy images of fractured SHS-OPMF/PP biocomposites exhibited less fiber pull-out, indicating that SHS treatment improved interfacial adhesion between fiber and PP. The results demonstrated SHS treatment is an effective surface modification method for biocomposite production.

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Enzymatic Saccharification of Oil Palm Mesocarp Fiber (OPMF) Treated with Superheated Steam

Cited by 16 publications

References 15 publications

Influence of High-Pressure Steam Pretreatment on the Structure of Rice Husk and Enzymatic Saccharification in a Two-Step System

Influence of High-Pressure Steam Pretreatment on the Structure of Rice Husk and Enzymatic Saccharification in a Two-Step System

Hydrothermal and wet disk milling pretreatment for high conversion of biosugars from oil palm mesocarp fiber

Superheated Steam Treatment of Oil Palm Mesocarp Fiber Improved the Properties of Fiber-Polypropylene Biocomposite

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