Pretreatment of corn stover and hybrid poplar by sodium hydroxide and hydrogen peroxide.
Identifieur interne : 003032 ( Main/Exploration ); précédent : 003031; suivant : 003033Pretreatment of corn stover and hybrid poplar by sodium hydroxide and hydrogen peroxide.
Auteurs : Rajesh Gupta [États-Unis] ; Y Y LeeSource :
- Biotechnology progress [ 1520-6033 ]
Descripteurs français
- KwdFr :
- Cellulase (métabolisme), Hydroxyde de sodium (composition chimique), Lignine (composition chimique), Lignine (métabolisme), Peroxyde d'hydrogène (composition chimique), Polyosides (composition chimique), Polyosides (métabolisme), Populus (composition chimique), Populus (métabolisme), Xylanes (composition chimique), Xylanes (métabolisme), Zea mays (composition chimique), Zea mays (métabolisme).
- MESH :
- composition chimique : Hydroxyde de sodium, Lignine, Peroxyde d'hydrogène, Polyosides, Populus, Xylanes, Zea mays.
- métabolisme : Cellulase, Lignine, Polyosides, Populus, Xylanes, Zea mays.
English descriptors
- KwdEn :
- Cellulase (metabolism), Hydrogen Peroxide (chemistry), Lignin (chemistry), Lignin (metabolism), Polysaccharides (chemistry), Polysaccharides (metabolism), Populus (chemistry), Populus (metabolism), Sodium Hydroxide (chemistry), Xylans (chemistry), Xylans (metabolism), Zea mays (chemistry), Zea mays (metabolism).
- MESH :
- chemical , chemistry : Hydrogen Peroxide, Lignin, Polysaccharides, Sodium Hydroxide, Xylans.
- chemical , metabolism : Cellulase, Lignin, Polysaccharides, Xylans.
- chemistry : Populus, Zea mays.
- metabolism : Populus, Zea mays.
Abstract
Sodium hydroxide and its derivatives are used as pulping reagents, wherein the spent NaOH is recovered in salt form and reused. In this study, use of low concentration NaOH (1-5%) in pretreatment of corn stover and hybrid poplar was investigated. It was done with the understanding that NaOH can be recovered. One of the main objectives in this study is to explore the potential of H(2)O(2) with NaOH for pretreatment of high lignin substrate such as hybrid poplar. Pretreatment time has not been optimized in this study but held constant at 24 h. Corn stover, after treatment with NaOH under moderate conditions, attains near quantitative glucan digestibility. On the other hand, hybrid poplar requires treatment at higher temperature and NaOH concentration to attain acceptable level of digestibility. Supplementation of hydrogen peroxide in the pretreatment significantly raises delignification and digestibility of hybrid poplar. It was also helpful in retaining the carbohydrates in the treated solids. Retention of hemicellulose after pretreatment provides a significant economic benefit as it eliminates the need for detoxifying hemicellulose sugars. As the residual xylan remaining after pretreatment is an impediment to enzymatic digestion of glucan, supplementation of xylanase has significantly increased the digestibility of glucan as well as xylan of the treated hybrid poplar.
DOI: 10.1002/btpr.405
PubMed: 20730772
Affiliations:
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In this study, use of low concentration NaOH (1-5%) in pretreatment of corn stover and hybrid poplar was investigated. It was done with the understanding that NaOH can be recovered. One of the main objectives in this study is to explore the potential of H(2)O(2) with NaOH for pretreatment of high lignin substrate such as hybrid poplar. Pretreatment time has not been optimized in this study but held constant at 24 h. Corn stover, after treatment with NaOH under moderate conditions, attains near quantitative glucan digestibility. On the other hand, hybrid poplar requires treatment at higher temperature and NaOH concentration to attain acceptable level of digestibility. Supplementation of hydrogen peroxide in the pretreatment significantly raises delignification and digestibility of hybrid poplar. It was also helpful in retaining the carbohydrates in the treated solids. Retention of hemicellulose after pretreatment provides a significant economic benefit as it eliminates the need for detoxifying hemicellulose sugars. As the residual xylan remaining after pretreatment is an impediment to enzymatic digestion of glucan, supplementation of xylanase has significantly increased the digestibility of glucan as well as xylan of the treated hybrid poplar.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">20730772</PMID><DateCompleted><Year>2010</Year><Month>12</Month><Day>08</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1520-6033</ISSN><JournalIssue CitedMedium="Internet"><Volume>26</Volume><Issue>4</Issue><PubDate><MedlineDate>2010 Jul-Aug</MedlineDate></PubDate></JournalIssue><Title>Biotechnology progress</Title><ISOAbbreviation>Biotechnol Prog</ISOAbbreviation></Journal><ArticleTitle>Pretreatment of corn stover and hybrid poplar by sodium hydroxide and hydrogen peroxide.</ArticleTitle><Pagination><MedlinePgn>1180-6</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1002/btpr.405</ELocationID><Abstract><AbstractText>Sodium hydroxide and its derivatives are used as pulping reagents, wherein the spent NaOH is recovered in salt form and reused. In this study, use of low concentration NaOH (1-5%) in pretreatment of corn stover and hybrid poplar was investigated. It was done with the understanding that NaOH can be recovered. One of the main objectives in this study is to explore the potential of H(2)O(2) with NaOH for pretreatment of high lignin substrate such as hybrid poplar. Pretreatment time has not been optimized in this study but held constant at 24 h. Corn stover, after treatment with NaOH under moderate conditions, attains near quantitative glucan digestibility. On the other hand, hybrid poplar requires treatment at higher temperature and NaOH concentration to attain acceptable level of digestibility. Supplementation of hydrogen peroxide in the pretreatment significantly raises delignification and digestibility of hybrid poplar. It was also helpful in retaining the carbohydrates in the treated solids. Retention of hemicellulose after pretreatment provides a significant economic benefit as it eliminates the need for detoxifying hemicellulose sugars. As the residual xylan remaining after pretreatment is an impediment to enzymatic digestion of glucan, supplementation of xylanase has significantly increased the digestibility of glucan as well as xylan of the treated hybrid poplar.</AbstractText><CopyrightInformation>(c) 2010 American Institute of Chemical Engineers</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Gupta</LastName><ForeName>Rajesh</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Department of Chemical Engineering, Auburn University, Auburn, AL 36849, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lee</LastName><ForeName>Y Y</ForeName><Initials>YY</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Biotechnol Prog</MedlineTA><NlmUniqueID>8506292</NlmUniqueID><ISSNLinking>1520-6033</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D011134">Polysaccharides</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D014990">Xylans</NameOfSubstance></Chemical><Chemical><RegistryNumber>55X04QC32I</RegistryNumber><NameOfSubstance UI="D012972">Sodium Hydroxide</NameOfSubstance></Chemical><Chemical><RegistryNumber>8024-50-8</RegistryNumber><NameOfSubstance UI="C007916">hemicellulose</NameOfSubstance></Chemical><Chemical><RegistryNumber>9005-53-2</RegistryNumber><NameOfSubstance UI="D008031">Lignin</NameOfSubstance></Chemical><Chemical><RegistryNumber>BBX060AN9V</RegistryNumber><NameOfSubstance UI="D006861">Hydrogen Peroxide</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 3.2.1.4</RegistryNumber><NameOfSubstance UI="D002480">Cellulase</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002480" MajorTopicYN="N">Cellulase</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006861" MajorTopicYN="N">Hydrogen Peroxide</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008031" MajorTopicYN="N">Lignin</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011134" MajorTopicYN="N">Polysaccharides</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012972" MajorTopicYN="N">Sodium Hydroxide</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014990" MajorTopicYN="N">Xylans</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D003313" MajorTopicYN="N">Zea mays</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2010</Year><Month>8</Month><Day>24</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2010</Year><Month>8</Month><Day>24</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2010</Year><Month>12</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">20730772</ArticleId><ArticleId IdType="doi">10.1002/btpr.405</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Alabama</li></region></list><tree><noCountry><name sortKey="Lee, Y Y" sort="Lee, Y Y" uniqKey="Lee Y" first="Y Y" last="Lee">Y Y Lee</name></noCountry><country name="États-Unis"><region name="Alabama"><name sortKey="Gupta, Rajesh" sort="Gupta, Rajesh" uniqKey="Gupta R" first="Rajesh" last="Gupta">Rajesh Gupta</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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