Bioconversion of Hemicellulose from Sugarcane Biomass Into Sustainable Products

Canilha, Larissa; Rodrigues, Rita de Cássia Lacerda Brambilla; Antunes, FelipeAntônio Fernandes; Chandel, Anuj K.; Milessi, Thais S.; Felipe, Maria das Graças de Almeida; Silva, SilvioSilvério da

doi:10.5772/53832

Cited by 30 publications

(19 citation statements)

References 125 publications

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“…Biopolymers in the form of xylan-rich hemicelluloses have potential applications as gels, films, adhesives, coatings, stabilizing and viscosity-enhancing agents in the food, biomedical and pharmaceutical industries (Ebringerova, 2006;Canilha et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Single-step microwave-assisted hot water extraction of hemicelluloses from selected lignocellulosic materials – A biorefinery approach

Mihiretu

Brodin

Chimphango

et al. 2017

Bioresource Technology

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The viability of single-step microwave-induced pressurized hot water conditions for co-production of xylan-based biopolymers and bioethanol from aspenwood sawdust and sugarcane trash was investigated. Extraction of hemicelluloses was conducted using microwave-assisted pressurized hot water system. The effects of temperature and time on extraction yield and enzymatic digestibility of resulting solids were determined. Temperatures between 170-200°C for aspenwood and 165-195°C for sugarcane trash; retention times between 8-22min for both feedstocks, were selected for optimization purpose. Maximum xylan extraction yields of 66 and 50%, and highest cellulose digestibilities of 78 and 74%, were attained for aspenwood and sugarcane trash respectively. Monomeric xylose yields for both feedstocks were below 7%, showing that the xylan extracts were predominantly in non-monomeric form. Thus, single-step microwave-assisted hot water method is viable biorefinery approach to extract xylan from lignocelluloses while rendering the solid residues sufficiently digestible for ethanol production.

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Section: Introductionmentioning

confidence: 99%

Single-step microwave-assisted hot water extraction of hemicelluloses from selected lignocellulosic materials – A biorefinery approach

Mihiretu

Brodin

Chimphango

et al. 2017

Bioresource Technology

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“…Lignin content accounts for about 25% of sugarcane total lignocellulosic biomass and is probably the main obstacle affecting the efficiency of saccharification during conversion to ethanol (Canilha et al, 2012 , 2013 ). Lignin and other recalcitrant components in cell walls prevent cellulase accessing the cellulose molecules and need to be removed before further processing (Sticklen, 2006 ).…”

Section: Potential Improvement By Molecular Genetics For Biofuelsmentioning

confidence: 99%

Potential for Genetic Improvement of Sugarcane as a Source of Biomass for Biofuels

Hoang

Furtado

Botha

et al. 2015

Front. Bioeng. Biotechnol.

118

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Sugarcane (Saccharum spp. hybrids) has great potential as a major feedstock for biofuel production worldwide. It is considered among the best options for producing biofuels today due to an exceptional biomass production capacity, high carbohydrate (sugar + fiber) content, and a favorable energy input/output ratio. To maximize the conversion of sugarcane biomass into biofuels, it is imperative to generate improved sugarcane varieties with better biomass degradability. However, unlike many diploid plants, where genetic tools are well developed, biotechnological improvement is hindered in sugarcane by our current limited understanding of the large and complex genome. Therefore, understanding the genetics of the key biofuel traits in sugarcane and optimization of sugarcane biomass composition will advance efficient conversion of sugarcane biomass into fermentable sugars for biofuel production. The large existing phenotypic variation in Saccharum germplasm and the availability of the current genomics technologies will allow biofuel traits to be characterized, the genetic basis of critical differences in biomass composition to be determined, and targets for improvement of sugarcane for biofuels to be established. Emerging options for genetic improvement of sugarcane for the use as a bioenergy crop are reviewed. This will better define the targets for potential genetic manipulation of sugarcane biomass composition for biofuels.

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“…Hemicellulose, the second most abundant polysaccharide in the world (Peng et al, 2012a), acts as a potential substance as a reserve for fuel and support of cellulose. This fraction presents branched structure composed of pentoses (D-xylose and Larabinose), hexoses (D-galactose, D-mannose and Dglucose) and small amounts of acetic and uronic acids (D-glucuronic, D-4-O-methyl-glucuronic and Dgalacturonic) (Canilha et al, 2013). Since the main component of the hemicellulosic fraction is xylan, this heteropolymers has been converted into many different value-added products such as xylose, xylitol, antioxidants and xylooligosaccharides (Akpinar et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Enzymatic Hydrolysis of Pretreated Kenaf using a Recombinant Xylanase: Effects of Reaction Conditions for Optimum Hemicellulose Hydrolysis

Azelee¹,

Jahim²,

Ismail³

et al. 2016

American Journal of Agricultural and Biological Sciences

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An efficient hemicellulose hydrolysis has now become a crucial step for xylooligosaccharides production for food additives and nutraceuticals industries. In this study, xylanase hydrolysis of pretreated hemicellulosic kenaf (Hibiscus cannabinus) for substantial hemicellulose hydrolysis was demonstrated. Experiments were performed primarily to investigate the effect of several critical reaction conditions towards the enzymatic hydrolysis of the pre-treated kenaf. The effects of various ranges of reaction conditions (substrate loading, xylanase loading, pH, temperature and time) were systematically and thoroughly studied. The study of hemicellulosic kenaf conversion using single enzyme was proven to effectively yield up to 59% of conversion after 48 h incubation using 3% (w/v) of substrate loading and 400 U of xylanase loading at 50°C in pH 4.0 buffer systems. The use of a single xylanase on the pre-treated kenaf was a key parameter in understanding the action of the main hemicellulose degrading enzyme towards hydrolysing the hemicellulose backbone of the pre-treated kenaf. Enzyme feeding strategy was also conducted and the results revealed that a batch feeding strategy of 400 U xylanase loading yielded the highest hemicellulose hydrolysis compared to the other fed batch enzyme feeding strategy. It was concluded that each reaction conditions and enzyme feeding strategy gave a significant impact towards the enzymatic hydrolysis and the use of optimum reaction conditions resulted in a high product yield at the end of the reaction. With the discovery of the importance of each reaction conditions involved in a hydrolysis, this study highlights the need for a comprehensive investigation on the reaction conditions using a mixture of enzymes towards achieving a complete hydrolysis with a higher product yield.

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Bioconversion of Hemicellulose from Sugarcane Biomass Into Sustainable Products

Cited by 30 publications

References 125 publications

Single-step microwave-assisted hot water extraction of hemicelluloses from selected lignocellulosic materials – A biorefinery approach

Single-step microwave-assisted hot water extraction of hemicelluloses from selected lignocellulosic materials – A biorefinery approach

Potential for Genetic Improvement of Sugarcane as a Source of Biomass for Biofuels

Enzymatic Hydrolysis of Pretreated Kenaf using a Recombinant Xylanase: Effects of Reaction Conditions for Optimum Hemicellulose Hydrolysis

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