Structure and properties of oil palm-based nanocellulose reinforced chitosan nanocomposite for efficient synthesis of butyl butyrate

Elias, Nursyafiqah; Chandren, Sheela; Attan, Nursyafreena; Mahat, Naji Arafat; Razak, Fazira Ilyana Abdul; Jamalis, Joazaizulfazli; Wahab, Roswanira Abdul

doi:10.1016/j.carbpol.2017.08.097

Cited by 60 publications

(21 citation statements)

References 76 publications

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“…Purification of CRL was carried out using the method described by Elias et al, [2] with minor modifications. In this study, 500.0 mg of the stabilized commercial CRL powder (≥ 700 U/mg) (Type VII, Sigma-Aldrich, USA), was freshly prepared by dissolving in 100 mM phosphate buffer solution (25.0 mL) of pH 7.0 and stirred at 200 rpm for 10 min.…”

Section: Purification and Immobilization Of Crl Onto G/a/sio2-mmentioning

confidence: 99%

“…The procedure described by Elias et al [2] was adopted with minor modifications. In the present work, the biocatalysts (CRL/G/A/SiO2-M) were removed from the reaction mixture by vacuum filtration through a Whatman 41 filter paper.…”

Section: Purification Of Butyl Butyrate and Product Characterizationmentioning

confidence: 99%

“…The reasons behind this have to do with its well-reported good stereospecificity, high enantioselectivity, and stability in organic solvents, as well as possessing good thermal stability, the capability of catalyzing a plethora of important industrial reactions. Among these reactions, CRL catalyzes several reactions including hydrolysis, transesterification, esterification, and interesterification which require mild optimal working conditions through an energy-saving route [1][2][3][4]. However, like any other forms of free enzymes, the free form of CRL is vulnerable to deactivation under harsh industrial settings [5].…”

Section: ■ Introductionmentioning

confidence: 99%

“…To test the catalytic efficacy of CRL/G/A/SiO2-M, the study used the problematic esterification production of butyl butyrate as the model reaction, as the current commercial Fisher-Speier commercial production that typically uses sulphuric acid as the catalyst produces low yields (~50%) of this ester [2,25]. In retrospect, the current synthetic method to produce butyl butyrate may be further improved by this biotechnological route by using the developed CRL/G/A/SiO2-M as the biocatalyst.…”

Section: ■ Introductionmentioning

confidence: 99%

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Effect of Glutaraldehyde Concentration on Catalytic Efficacy of <i>Candida rugosa</i> Lipase Immobilized onto Silica from Oil Palm Leaves

Onoja

Wahab

2019

Indones. J. Chem.

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Till date, studies that investigated the effect of glutaraldehyde concentration on catalytic efficacy of biocatalyst developed with silica-derived from oil palm leaves (OPL) as support, are unknown. The study presents the preparation of a support consisting of silica extracted from OPL coated over magnetite (G/A/SiO2-M) for the immobilization of Candida rugosa lipase (CRL). Herein, the effect of glutaraldehyde concentration on the catalytic efficacy of immobilized CRL was assessed by the enzymatic production of butyl butyrate as a model. Fourier transform infrared (FTIR) spectra and immobilization parameters indicated that covalent bound CRL on functionalized OPL-derived silica-magnetite composite activated with 4% (v/v) glutaraldehyde solution (100 mM, pH 7.0) (CRL/G/A/SiO2-M) and pretreated in toluene, resulted in a protein loading and an immobilization yield of 68.3 mg/g and 74.3%, respectively. The resultant CRL/G/A/SiO2-M biocatalyst which specific activity was 61.9 U/g catalyzed the esterification production of 76.5% butyl butyrate in just 3 h, as confirmed by analyses of the purified ester using FTIR and 1H NMR spectroscopy. Hence, the finding envisages the promising use of G/A/SiO2-M support fabricated from discarded OPL as a carrier for immobilization and activation of CRL, in conjunction to being a good alternative source of renewable silica.

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Section: Purification and Immobilization Of Crl Onto G/a/sio2-mmentioning

confidence: 99%

Section: Purification Of Butyl Butyrate and Product Characterizationmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Glutaraldehyde Concentration on Catalytic Efficacy of <i>Candida rugosa</i> Lipase Immobilized onto Silica from Oil Palm Leaves

Onoja

Wahab

2019

Indones. J. Chem.

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“…biodegradability and renewability, low cost as well as low carbon dioxide release (Abdul Khalil et al, 2016) have been categorized as sustainable, green and environmental friendly materials (Maleki et al, 2017). Utilization of these cellulosic materials generated from different agricultural wastes to produce nanocellulose is a feasible approach (Elias et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Extraction, Preparation and Characterization: Nanocellullose

2017

IJSR

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Nanocellulose the organic nanomaterial is an emerging and promising material with exceptional properties and a broad spectrum of potential applications in numerous fields, i.e. pharmaceutics, biomedical, food ingredients, cosmetic additives, packaging materials, hygiene products, film and absorbance media, electronics, barrier films, membranes, nanocomposites and supercapacitors etc. Due to its unique structural features and remarkable physicochemical properties such as biodegradability, biocompatibility, renewability, low density, optical transparency, adaptable surface chemistry and improved mechanical properties nanocellulose has drawn tremendous attention in academia as well as in industrial sector. The main aim of this article is to provide an overview of recent research in the field of nanocellulose production from different pre treatments and methods.

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Progress in nanocellulose and its polymer based composites: A review on processing, characterization, and applications

2021

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Contamination of the ecosystem from plastics is the most prominent concern of current times. Natural materials like plant-based fibers from cellulose, hemp, sisal, etc., are preferred and being looked upon as better alternatives.Cellulose, being biocompatible and biodegradable, possesses appreciable properties. Its nanoscale form, called as nanocellulose, can be extracted from agricultural residue and lignocellulosic biomass through different chemomechanical techniques. Chemical methods include alkaline treatment, chemical bleaching, acid hydrolysis, and TEMPO mediated oxidation, whereas highpressure homogenization, grinding, cryogenic crushing, and ultrasonication are the mechanical methods used for the isolation and extraction of nanocellulose. This review presents a comprehensive analysis of various processing and extraction methods used for nanocellulose. The review also brings an insight into nanocellulose-polymer based composites including their mechanical, biological, thermal, and physical properties. A detailed discussion on nature, morphology, size, and other parameters through different characterization techniques is also presented in this review. Finally, the applications of nanocellulose in biotechnology, biomedical, mechanical, material science, chemical, and electronics engineering have also been discussed. K E Y W O R D Sbio-composites, characterization, chemo-mechanical methods, extraction, nanocellulose | INTRODUCTIONUrge to go green has led to a shift toward eco-friendly or green materials. This approach aims at reducing the emissions of greenhouse gases to safeguard the environment at a global level. Eco-friendly and naturally occurring materials are being mostly focused for such purposes. This is done in order to reduce the dependence and for the replacement of synthetically available materials. The naturally occurring materials offer several advantages like sustainability, low cost, better resistance toward wear, low toxicity, high modulus of elasticity, and large specific area with better mechanical and biological properties. The advantages of incorporating the use of eco-friendly or green materials are shown in Figure 1.Natural fibers obtained from plants and other sources are being used to develop materials with greater interests and scope. Widely used natural fibers include cotton, flax, silk, sisal, jute, and alpaca, etc. Composites made from natural fibers are called as bio-composites. The fibers can be utilized as a segment of composite materials, where their orientation impacts the overall properties. In these

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Structure and properties of oil palm-based nanocellulose reinforced chitosan nanocomposite for efficient synthesis of butyl butyrate

Cited by 60 publications

References 76 publications

Effect of Glutaraldehyde Concentration on Catalytic Efficacy of <i>Candida rugosa</i> Lipase Immobilized onto Silica from Oil Palm Leaves

Effect of Glutaraldehyde Concentration on Catalytic Efficacy of <i>Candida rugosa</i> Lipase Immobilized onto Silica from Oil Palm Leaves

Extraction, Preparation and Characterization: Nanocellullose

Progress in nanocellulose and its polymer based composites: A review on processing, characterization, and applications

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