Utilization of pineapple stem juice to enhance enzyme-hydrolytic efficiency for sugarcane bagasse after an optimized pre-treatment with alkaline peroxide

Monte, J. R.; Brienzo, Michel; Milagres, Adriane M. F.

doi:10.1016/j.apenergy.2010.08.009

Cited by 48 publications

(19 citation statements)

References 28 publications

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“…The most commonly used pretreatment to remove hemicelluloses is the exposure of biomass to alkaline (NaOH) or acid (H 2 SO 4 ) solutions (Hu and Wen, 2008;Idrees et al, 2013;Souza et al, 2012). Also, previous studies from our group showed that peroxidase pretreatment of lignocellulosic materials (sugarcane bagasse) removes lignin efficiently, producing reusable solubilized hemicellulose (Brienzo et al, 2009;Monte et al, 2010). The results reported by Souza and co-workers (2012) indicate that is possible to produce approximately 187 L of ethanol for each ton of banana pseudostem using a low severity acid pretreatment.…”

Section: Introductionmentioning

confidence: 91%

Acid, alkali and peroxide pretreatments increase the cellulose accessibility and glucose yield of banana pseudostem

Shimizu

Monteiro

Ghiraldi

et al. 2018

Industrial Crops and Products

107

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Lignocellulosic biomasses such as banana pseudostem are attractive cellulose sources for bioenergy production, and for the use in biorefinery processes. However, pretreatment of lignocellulosic material is required to remove hemicellulose and lignin, while increasing cellulose accessibility to enzymatic hydrolysis (i.e., decreasing biomass recalcitrance). The effect of different concentrations of acid (H 2 SO 4), alkaline (NaOH) and peroxide (H 2 O 2) pretreatments on the chemical composition, cellulose accessibility, and enzymatic digestibility of banana pseudostem were studied. The water insoluble solids (WIS) recovery was low (∼30%) for the severe pretreatment conditions applied, indicating high material solubilization. Acid pretreatment completely removed the hemicellulose content, whereas alkaline and peroxide pretreatments reduced its amount to 4.38 and 8.68%, respectively. In contrast, the lignin content increased (from 17.26 to 39.99%) after severe acid pretreatment, while alkaline and peroxide pretreatments reduced the lignin content to 7.65% and 7.17%, respectively. In line with hemicellulose and lignin removal, the cellulose content increased from 60.84 to 75.48 and 74.37%, respectively for alkaline and peroxide pretreatments, with no alteration for acid. Dye adsorption assays showed that alkaline and acid pretreatments resulted in high internal and external specific surface areasindicative of high cellulose accessibilitywhen compared with peroxide pretreatments. Overall, alkaline and acid pretreatments resulted in the highest glucose yields from enzymatic hydrolysis of banana pseudostem, compared with peroxide pretreatment. In conclusion, concentrations of each pretreatment that led to the highest glucose yields was identified, confirming that the banana pseudostem is a great source of fermentable sugars, with high potential for biofuel production.

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Section: Introductionmentioning

confidence: 91%

Acid, alkali and peroxide pretreatments increase the cellulose accessibility and glucose yield of banana pseudostem

Shimizu

Monteiro

Ghiraldi

et al. 2018

Industrial Crops and Products

107

View full text Add to dashboard Cite

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“…Th e combination of lignocellulosic material with thermoplastic matrix can present a considerable problem: incompatibility between the polar and hygroscopic fi ber and non-polar and hydrophobic matrix. Because of this, treatment of natural fi bers or the use of coupling agent and other methods are beneficial in order to improve interfacial adhesion [21][22][23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

Lignocellulosic Polymer Composites: Processing, Characterization and Properties

Sipião

Reis

Paiva

et al. 2014

Lignocellulosic Polymer Composites

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Natural fi bers-reinforced polymer matrixes provide more alternatives in the materials market due to their unique advantages. Poor fi ber-matrix interfacial adhesion may aff ect the physical and mechanical properties of the resulting composites due to the surface incompatibility between hydrophilic natural fi bers and non-polar polymers. Th e results presented in this chapter focus on the properties of palm and pineapple fi bers in terms of their physical and chemical structure, mechanical properties and processing behavior. Th e fi nal properties of these fi bers with thermoplastics matrixes are also presented, paying particular attention to the use of physical and chemical treatments for the improvement of fi ber-matrix interaction .

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“…Diversity of pretreatment techniques involves physical, biological, chemical or combinations of them. Every treatment has significant impact on conversion of lignocellulosic biomass (2,3). In acid treatment, the most commonly used acids are H 2 SO 4 , HCl and HNO 3 which hydrolyze the hemicellulose contents of lignocellulosic biomasses (4)(5)(6)(7).…”

Section: Introductionmentioning

confidence: 99%

Statistical optimization for deconstruction of poplar substrate by dilute sulfuric acid for bioethanol production

Tabassum

Irfan

Shakir

et al. 2017

Green Chemistry Letters and Reviews

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In this study, response surface methodology was used to study the effects of H 2 SO 4 , concentrations, substrate loading and residence time on liberation of reducing sugars (RS), total sugars (TS) and total phenolic compounds from poplar leaves and twigs. Box-Behnken design with three variables and three levels showed maximum release of total phenolic compounds (57.39 mg/ml) corresponding to 0.8% H 2 SO 4 concentration, 15% substrate level with residence time of 4 h. Under these conditions, the TS and RS released up to 161.20 and 5.24 mg/ml, respectively. Analysis of the pretreated substrate by Fourier transform infra-red and X-ray diffraction revealed the effectiveness of pretreatment conditions. Second-order polynomial equation using analysis of variance was employed for analyzing the results. The proposed model was found very significant with F-value of 48.39. The R 2 and adjusted R 2 values also revealed the accuracy of predicted response. ARTICLE HISTORY

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Utilization of pineapple stem juice to enhance enzyme-hydrolytic efficiency for sugarcane bagasse after an optimized pre-treatment with alkaline peroxide

Cited by 48 publications

References 28 publications

Acid, alkali and peroxide pretreatments increase the cellulose accessibility and glucose yield of banana pseudostem

Acid, alkali and peroxide pretreatments increase the cellulose accessibility and glucose yield of banana pseudostem

Lignocellulosic Polymer Composites: Processing, Characterization and Properties

Statistical optimization for deconstruction of poplar substrate by dilute sulfuric acid for bioethanol production

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