Pretreatments of Carnauba (Copernicia prunifera) straw residue for production of cellulolytic enzymes by Trichorderma reesei CCT-2768 by solid state fermentation

Silva, Francinaldo Leite da; Campos, Alan de Oliveira; Santos, Davi Alves dos; Júnior, Sérgio Dantas de Oliveira; Padilha, Carlos Eduardo de Araújo; Júnior, Francisco Canindé de Sousa; Macêdo, Gorete Ribeiro de; Santos, Everaldo Silvino dos

doi:10.1016/j.renene.2017.09.064

Cited by 40 publications

(18 citation statements)

References 39 publications

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“…SSF is favorable process that can be mediated by a great variety of microorganisms, such as fungus, yeast, and bacteria. Despite the effective biotransformation of lignocellulosic materials by microorganisms [38], SSF also provides alternative substrates simultaneously, which can be applied in food, drug, textile, and dye industries [39,40]. Moreover, SSF is also an effective way to produce alternative feed ingredients with improved nutrient quality for livestock industries [41,42,43,44,45].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Extracellular Proteolytic, Cellulolytic, and Hemicellulolytic Enzyme Activities and Biotransformation of Palm Kernel Cake Biomass by Lactic Acid Bacteria Isolated from Malaysian Foods

Foo

et al. 2019

IJMS

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Biotransformation via solid state fermentation (SSF) mediated by microorganisms is a promising approach to produce useful products from agricultural biomass. Lactic acid bacteria (LAB) that are commonly found in fermented foods have been shown to exhibit extracellular proteolytic, β-glucosidase, β-mannosidase, and β-mannanase activities. Therefore, extracellular proteolytic, cellulolytic, and hemicellulolytic enzyme activities of seven Lactobacillus plantarum strains (a prominent species of LAB) isolated from Malaysian foods were compared in this study. The biotransformation of palm kernel cake (PKC) biomass mediated by selected L. plantarum strains was subsequently conducted. The results obtained in this study exhibited the studied L. plantarum strains produced versatile multi extracellular hydrolytic enzyme activities that were active from acidic to alkaline pH conditions. The highest total score of extracellular hydrolytic enzyme activities were recorded by L. plantarum RI11, L. plantarum RG11, and L. plantarum RG14. Therefore, they were selected for the subsequent biotransformation of PKC biomass via SSF. The hydrolytic enzyme activities of treated PKC extract were compared for each sampling interval. The scanning electron microscopy analyses revealed the formation of extracellular matrices around L. plantarum strains attached to the surface of PKC biomass during SSF, inferring that the investigated L. plantarum strains have the capability to grow on PKC biomass and perform synergistic secretions of various extracellular proteolytic, cellulolytic, and hemicellulolytic enzymes that were essential for the effective biodegradation of PKC. The substantial growth of selected L. plamtraum strains on PKC during SSF revealed the promising application of selected L. plantarum strains as a biotransformation agent for cellulosic biomass.

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Section: Introductionmentioning

confidence: 99%

Comparative Study of Extracellular Proteolytic, Cellulolytic, and Hemicellulolytic Enzyme Activities and Biotransformation of Palm Kernel Cake Biomass by Lactic Acid Bacteria Isolated from Malaysian Foods

Foo

et al. 2019

IJMS

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“…Thereafter, solid residue was batch washed with 1.5 L portions of water until the wash water reached a pH close to 7.0. The pretreated material was dried at 50 ° C for 24 hours and stored (SILVA et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Alkaline Pretreatment on the Enzymatic Hydrolysis of Carnauba Straw Residue

Campos¹,

Silva²,

Magalhães³

et al. 2019

R. bras. Ener. Renov.

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Carnauba (Copernicia prunifera) straw residue generated from production of its wax is rich in cellulose, thus showing a potential use in the production of second generation ethanol.However, the high lignin and hemicellulose load associated with cellulose makes it difficult the enzymatic attack, thus having the need of an adequate pretreatment of this material. The objective of this study was to optimize the enzymatic hydrolysis of carnauba straw residue, focusing on the alkaline biomass pretreatment. Therefore, NaOH solutions at concentrations of 1.0% (w/v) (PA1), 2.0% (w/v) (PA2), 3.0% (w/v) (PA3) and 4.0% (w/v) (PA4) were used.The chemical and physical characterization of natural and pre-treated carnauba straw were according to the NREL, and DRX and FTIR performed analyzes. The materials chemical characterization showed that all the used pretreatments were able to remove a significant amount of lignin and hemicellulose, which can improve the enzymes access, favoring the

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“…The CSF is obtained from carnauba (Copernicia prunifera), a palm native to the semi-arid region of northeastern Brazil, whose main product is carnauba wax. Wax has several applications in the pharmaceutical industry, food industry, cosmetics, electronic components, greases and lubricants and as mold release [26][27][28][29]. After the extraction of the wax, approximately 352 thousand tons of lignocellulosic waste is generated per year [30,31], which constitutes an important and favorable scenario for the use of this biomass.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the behavior of mortars produced with fibers from the straw of carnauba: effects of the content of addition and length used

2021

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The rendering mortars must be able to absorb small deformations, in order to guarantee the stability of the masonry (performance and durability). When this premise is not met, there is a greater propensity for the appearance of cracks, one of the main and worrying pathological manifestations in mortar coverings. One of the alternatives to combat this pathological manifestation is the addition of natural/artificial fibers in order to improve the mechanical properties (mainly the traction strength) and, consequently, the deformation capacity of the mortar. In this perspective, this work analyzed the behavior in the fresh and hardened state of mortars with the addition of fibers obtained from the straw of the carnauba (Copernicia prunifera), an abundant tree in the region of the Açu valley/RN (Brazil). For this purpose, mortars were produced in a 1:3 mass ratio (binder:aggregate) with the addition of 3% and 5% fiber from the carnauba straw (CSF) in relation to the cement mass and with the water/cement ratio (w/c) fixed at 0.72 for all mixtures. The effects of using fibers with different lengths (20, 40 and 60 mm) were also investigated. The properties of mortars were evaluated in a fresh (consistency) and hardened (compression and flexural strengths) state. The results indicated that the addition of CSF results in mortar with less consistency and mechanical strength. However, in general, the best performance was obtained for additions of up to 3% and for longer fiber lengths (20 mm).

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Pretreatments of Carnauba (Copernicia prunifera) straw residue for production of cellulolytic enzymes by Trichorderma reesei CCT-2768 by solid state fermentation

Cited by 40 publications

References 39 publications

Comparative Study of Extracellular Proteolytic, Cellulolytic, and Hemicellulolytic Enzyme Activities and Biotransformation of Palm Kernel Cake Biomass by Lactic Acid Bacteria Isolated from Malaysian Foods

Comparative Study of Extracellular Proteolytic, Cellulolytic, and Hemicellulolytic Enzyme Activities and Biotransformation of Palm Kernel Cake Biomass by Lactic Acid Bacteria Isolated from Malaysian Foods

Evaluation of Alkaline Pretreatment on the Enzymatic Hydrolysis of Carnauba Straw Residue

Evaluation of the behavior of mortars produced with fibers from the straw of carnauba: effects of the content of addition and length used

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