Biotechnological potential of agro-industrial residues. I: sugarcane bagasse

Pandey, Ashok; Soccol, Carlos Ricardo; Nigam, Poonam Singh Nee; Soccol, V. T.

doi:10.1016/s0960-8524(99)00142-x

Cited by 1,126 publications

(645 citation statements)

References 87 publications

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“…There was recovery in pH towards the end of incubation period. Advances in industrial biotechnology offer potential opportunities for economic utilization of lignocellulosic substrates 17 . Solid state fermentation is a microbial process in which the microorganisms grow under conditions closer to their natural habitat and produce larger amounts of extracellular enzymes and other enzymes than do in submerged fermentation 18 .…”

Section: Resultsmentioning

confidence: 99%

Cellulolytic enzymes on lignocellulosic substrates in solid state fermentation by Aspergillus niger

2007

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The production of cellulolytic enzymes by Aspergillus niger on lignocellulosic substrates groundnut fodder, wheat bran, rice bran and sawdust in solid state fermentation in a laboratory scale was compared. Czapek Dox liquid broth amended with cellulose (0.5%) was used to moisten lignocellulosic solid supports for cultivation of Aspergillus niger. The production of fi lter paperase, carboxymethyl cellulase and -glucosidase were monitored at daily intervals for 5 days. The peak production of the enzymes occurred within 3 days of incubation. Among solid supports used in the study, wheat bran was the best solid matrix followed by groundnut fodder in production of cellulolytic enzymes in solid state fermentation. Groundnut fodder supported signifi cant production of FPase (2.09 FPU/g), CMCase (1.36 U/g) and -glucosidase activity (0.0117 U/g) in solid state fermentation. Considerable secretion of protein (5.10 mg/g) on groundnut fodder at peak time interval 1st day of incubation was recorded.

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Section: Resultsmentioning

confidence: 99%

Cellulolytic enzymes on lignocellulosic substrates in solid state fermentation by Aspergillus niger

2007

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“…Brazil is the largest sugarcane producer, and the total forecast of sugarcane in the 2011/12 harvest is 652.015 million tons 3 Sugarcane generates several residual agricultural products such as bagasse in alcohol and sugar production. Bagasse is the fibrous residue of sugarcane after crushing and the extraction of sugarcane juice and is one of the largest residual agriculture products in the world 4 Sugarcane bagasse is composed of three main macromolecular components: 50% cellulose, 25% polyoses and 25% lignin 5,6 . Several processes and products have been reported that utilize bagasse as a raw material.…”

Section: Introductionmentioning

confidence: 99%

“…Several processes and products have been reported that utilize bagasse as a raw material. These include the production of dissolving pulp, paper pulp, ethanol and the reinforcement of polymeric matrices 1,4,5,7,8 .…”

Section: Introductionmentioning

confidence: 99%

Polypropylene Composites Reinforced with Biodegraded Sugarcane Bagasse Fibers: Static and Dynamic Mechanical Properties

et al. 2016

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The present work aimed to study sugarcane bagasse fibers pre-treated with fungi and using NaOH/ anthraquinone (AQ) in chemical pulping processes for applications in composite materials. Bagasse was decayed with 250 mg of Ceriporiopsis subvermispora inoculum in a 20 L bioreactor. After that, samples were submitted to similar conditions of decaying without inoculum charge. Decayed and undecayed fibers were treated with NaOH 12.5 wt%, 0.15 of AQ and a 12:1 (v/w) liquor:bagasse ratio at 160°C. Then, all obtained fibers were characterized according to their chemical composition. Dried biotreated (decayed) and control (undecayed) fibers were mixed through an extruder process with polypropylene. Later, composite granulates were injected directly in mold with cavities for tensile, flexural and shear tests. Composite materials with 10 and 20 wt% fibers were submitted to static mechanical standard tests and DMA (Dynamic Mechanical Analysis) to evaluate the effect of biotreatment. Biotreatment, cook time (pulping), and fiber content contributed to improvements in the mechanical properties of the composites. The interface between fiber and matrix was increased with the biotreatment and pulping of fibers. Furthermore, DMA results also showed that fiber incorporation into PP improved the modulus, mainly for biotreated fibers/PP composites. The T g (tan δ data) from composites was dislocated at lower temperatures with respect to neat PP due to the influence of fibers on matrix.

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“…In spite of the great potential of this residual biomass of lignocellulosic composition (60-70% carbohydrates) for the production of fuels and chemicals, the majority of it is burned in sugar mills and alcohol distilleries for energy generation, and a smaller fraction is used for animal feeding; however there is still some surplus (Zanin et al 2000;Wyman et al 2005). Additionally, with the increase in cane production in response to the growth of global ethanol demand (from 66 to 125 million m 3 between 2008 and 2020), more bagasse will be available (Pandey et al 2000;Balat and Balat, 2009). Sugar cane bagasse is mainly composed of two polysaccharidic fractions (cellulose and hemicellulose) and a polyphenolic macromolecule (lignin).…”

mentioning

confidence: 99%

Sugar cane bagasse as feedstock for second generation ethanol production. Part I: Diluted acid pretreatment optimization

Betancur

Pereira

2010

Electron. J. Biotechnol.

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Biotechnological potential of agro-industrial residues. I: sugarcane bagasse

Cited by 1,126 publications

References 87 publications

Cellulolytic enzymes on lignocellulosic substrates in solid state fermentation by Aspergillus niger

Cellulolytic enzymes on lignocellulosic substrates in solid state fermentation by Aspergillus niger

Polypropylene Composites Reinforced with Biodegraded Sugarcane Bagasse Fibers: Static and Dynamic Mechanical Properties

Sugar cane bagasse as feedstock for second generation ethanol production. Part I: Diluted acid pretreatment optimization

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