Non-alkaline solubilization of arabinoxylans from destarched wheat bran using hydrothermal microwave processing and comparison with the hydrolysis by an endoxylanase

Aguedo, Mário; Ruiz, Héctor A.; Richel, Aurore

doi:10.1016/j.cep.2015.07.020

Cited by 30 publications

(21 citation statements)

References 41 publications

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“…On the other hand, dilute alkaline solutions such as hydrogen peroxide (H2O2) have been used to extract WUAX, resulting in yields of around 69% of the total AXs content, from wheat bran [148,171]. Although alkaline extraction yield is higher than the water extraction, alkaline extraction has been reported to affect the molecular structure of AXs due to the disruption of cross-linkages, resulting in different molecular structures in WUAX than that would occur naturally, which in turn results in different functional characteristics [172,173]. The extraction yields of AXs and hemicelluloses using different alkaline solutions from rice and wheat brans are shown in Table 3.…”

Section: Alkaline Extractionmentioning

confidence: 99%

Health-related effects and improving extractability of cereal arabinoxylans

Fadel

Mahmoud

Ashworth

et al. 2018

International Journal of Biological Macromolecules

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Arabinoxylans (AXs) are major dietary fibers. They are composed of backbone chains of β-(1-4)-linked xylose residues to which α-l-arabinose are linked in the second and/or third carbon positions. Recently, AXs have attracted a great deal of attention because of their biological activities such as their immunomodulatory potential. Extraction of AXs has some difficulties; therefore, various methods have been used to increase the extractability of AXs with varying degrees of success, such as alkaline, enzymatic, mechanical extraction. However, some of these treatments have been reported to be either expensive, such as enzymatic treatments, or produce hazardous wastes and are non-environmentally friendly, such as alkaline treatments. On the other hand, mechanical assisted extraction, especially extrusion cooking, is an innovative pre-treatment that has been used to increase the solubility of AXs. The aim of the current review article is to point out the health-related effects and to discuss the current research on the extraction methods of AXs.

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Section: Alkaline Extractionmentioning

confidence: 99%

Health-related effects and improving extractability of cereal arabinoxylans

Fadel

Mahmoud

Ashworth

et al. 2018

International Journal of Biological Macromolecules

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“…As biomass pretreatment is considered as an initial and crucial step to enhance lignocellulose enzymatic hydrolysis, various pretreatments have been applied using physical, chemical and biological approaches. For instance, hot water, steam explosion, and hydrothermal microwave have been used as physical pretreatments in different biomass materials [23][24][25]. Alkalis (NaOH, CaO, NH 3 •H 2 O), acids (H 2 SO 4 , H 3 PO 4 ) and ionic liquids are broadly applied as effective chemical pretreatments.…”

Section: Biomass Digestibility In Four Cereal Cropsmentioning

confidence: 99%

“…The biomass digestibility (saccharification) could be detected by measuring either hexoses yield (% cellulose) released from hydrolysis by a crude cellulase mixture of lignocellulose after pretreatment or total sugars yield (% dry matter) released from both enzymatic hydrolysis and pretreatment [28,29]. Due to their diverse cell wall compositions and features, the four cereal crops exhibit great variation of hexoses yields released from enzymatic hydrolysis after chemical pretreatments (Table 3) [23][24][25]. As a comparison, several biomass samples of rice and sweet sorghum could be completely degraded from 4% NaOH pretreatments, whereas wheat and maize samples show relatively low biomass saccharification.…”

Section: Biomass Digestibility In Four Cereal Cropsmentioning

confidence: 99%

Gene Profiling of Plant Cell Wall Biosynthesis for Genetic Enhancing Biomass Enzymatic Saccharification in Cereal Crops

Wang¹,

Li²,

Guo³

et al. 2017

J Plant Biochem Physiol

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Cereal crops, including rice, wheat, corn, and sweet sorghum, produce major food grains for humans and generate huge amount biomass for biofuels production. Due to lignocellulose recalcitrance, however, the most biomass residues of cereal crops are not well used for biofuel application, and genetic modification of plant cell walls has thus proposed as a promising solution for enhancing biomass enzymatic saccharification. In the present review, we described plant cell wall compositions and wall polymer features in four cereal crops, and presented their major wall factors that significantly affect biomass enzymatic digestibility under various pretreatments including cellulose crystallinity, arabinose substitution degree of hemicellulose and three monomers proportions of lignin. Furthermore, using globe genomic sequence database and gene expression information, we compared all candidate genes that are involved in cell wall biosynthesis in the four cereal crops, and discussed the potential cell wall modifications for increasing both biomass yields and lignocellulose enzymatic saccharification in the cereal crops by using desire genes and selecting appropriate genetic manipulation approaches.

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“…The purpose of physical pretreatments are to increase the accessible specific surface area of lignocellulosic materials to enzymes via diminishing of biomass particle size or disrupting their structural regularity [136][137][138][139]. Size reduction not only increases the specific surface area of biomass but also reduces cellulose DP and Crl, but it depends on biomass compositions [140][141][142][143][144][145][146][147][148][149][150][151][152].…”

Section: Physical Pretreatmentmentioning

confidence: 99%

Advances in Genetic Manipulation of Lignocellulose to Reduce Biomass Recalcitrance and Enhance Biofuel Production in Bioenergy Crops

Madadi¹,

Penga²,

Abbas³

2017

J Plant Biochem Physiol

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Lignocellulose biomass derived from plant cell walls is a rich source of biopolymers for the production of biofuels. Biomass recalcitrance is the noticeable and main features of lignocellulose which can reduces by genetic modification of plant cell wall. The aim of the present review is to provide the reader a new insight for enhancing biomass yield and biofuels production. This can be issued by focusing on major perennial grasses, cereal crops and woody feedstock which have high biomass yield or large biomass residues and also the effects of distinctive cell wall polymers (cellulose, hemicellulose, lignin, and pectin) on the enzymatic saccharification of biomass under different pretreatments. Moreover the present review paper will also major gene candidates which are involved plant cell wall biosynthesis, degradation and modification for improving biomass yield and digestibility in transgenic plants and genetic mutants.

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Non-alkaline solubilization of arabinoxylans from destarched wheat bran using hydrothermal microwave processing and comparison with the hydrolysis by an endoxylanase

Cited by 30 publications

References 41 publications

Health-related effects and improving extractability of cereal arabinoxylans

Health-related effects and improving extractability of cereal arabinoxylans

Gene Profiling of Plant Cell Wall Biosynthesis for Genetic Enhancing Biomass Enzymatic Saccharification in Cereal Crops

Advances in Genetic Manipulation of Lignocellulose to Reduce Biomass Recalcitrance and Enhance Biofuel Production in Bioenergy Crops

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