View in EDS

A comparative study on the degradation of cotton linters induced by carbonate and hydroxyl radicals generated from peroxynitrite.

Saved in:
Bibliographic Details
Title: A comparative study on the degradation of cotton linters induced by carbonate and hydroxyl radicals generated from peroxynitrite.
Authors: Magnus Carlsson, David Stenman, Gábor Merényi, Torbjörn Reitberger
Source: Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood. Feb2005, Vol. 59 Issue 2, p132-142. 11p.
Subjects: Linters, Chemical affinity, Atomic theory, Research methodology, Radicals (Chemistry)
Abstract: Carbonate (CO 3 •−) and hydroxyl (HO •) radicals were chemically produced in cotton linter suspensions using peroxynitrite as a radical precursor. Both radicals could degrade cotton linters, as shown by viscosity and GPC-SEC measurements. As evidenced by the viscosity measurements, the presence of oxygen during the cotton linter treatments slightly increased cellulose degradation by both radicals. For the carbonate radical, more than 90% of the viscosity losses could be recovered by reductive NaBH 4 treatment before measuring the viscosity, whereas only approximately 40% of the viscosity was recovered after hydroxyl radical degradation and subsequent NaBH 4 treatment. This indicates that carbonate radicals mainly abstract H-atoms adjacent to hydroxyl groups, i.e., at C 2, C 3 and C 6. This intramolecular selectivity may reflect a polar effect, whereby hydrogen atom abstractions from these positions are favoured. In addition, abstraction at C 6 would be sterically and statistically favoured. [ABSTRACT FROM AUTHOR]
Copyright of Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood is the property of De Gruyter and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 20151414
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: A comparative study on the degradation of cotton linters induced by carbonate and hydroxyl radicals generated from peroxynitrite.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Magnus+Carlsson%22">Magnus Carlsson</searchLink><br /><searchLink fieldCode="AR" term="%22David+Stenman%22">David Stenman</searchLink><br /><searchLink fieldCode="AR" term="%22Gábor+Merényi%22">Gábor Merényi</searchLink><br /><searchLink fieldCode="AR" term="%22Torbjörn+Reitberger%22">Torbjörn Reitberger</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Holzforschung%3A+International+Journal+of+the+Biology%2C+Chemistry%2C+Physics%2C+%26+Technology+of+Wood%22">Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood</searchLink>. Feb2005, Vol. 59 Issue 2, p132-142. 11p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Linters%22">Linters</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+affinity%22">Chemical affinity</searchLink><br /><searchLink fieldCode="DE" term="%22Atomic+theory%22">Atomic theory</searchLink><br /><searchLink fieldCode="DE" term="%22Research+methodology%22">Research methodology</searchLink><br /><searchLink fieldCode="DE" term="%22Radicals+%28Chemistry%29%22">Radicals (Chemistry)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Carbonate (CO 3 •−) and hydroxyl (HO •) radicals were chemically produced in cotton linter suspensions using peroxynitrite as a radical precursor. Both radicals could degrade cotton linters, as shown by viscosity and GPC-SEC measurements. As evidenced by the viscosity measurements, the presence of oxygen during the cotton linter treatments slightly increased cellulose degradation by both radicals. For the carbonate radical, more than 90% of the viscosity losses could be recovered by reductive NaBH 4 treatment before measuring the viscosity, whereas only approximately 40% of the viscosity was recovered after hydroxyl radical degradation and subsequent NaBH 4 treatment. This indicates that carbonate radicals mainly abstract H-atoms adjacent to hydroxyl groups, i.e., at C 2, C 3 and C 6. This intramolecular selectivity may reflect a polar effect, whereby hydrogen atom abstractions from these positions are favoured. In addition, abstraction at C 6 would be sterically and statistically favoured. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood is the property of De Gruyter and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=20151414
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1515/HF.2005.020
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 132
    Subjects:
      – SubjectFull: Linters
        Type: general
      – SubjectFull: Chemical affinity
        Type: general
      – SubjectFull: Atomic theory
        Type: general
      – SubjectFull: Research methodology
        Type: general
      – SubjectFull: Radicals (Chemistry)
        Type: general
    Titles:
      – TitleFull: A comparative study on the degradation of cotton linters induced by carbonate and hydroxyl radicals generated from peroxynitrite.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Magnus Carlsson
      – PersonEntity:
          Name:
            NameFull: David Stenman
      – PersonEntity:
          Name:
            NameFull: Gábor Merényi
      – PersonEntity:
          Name:
            NameFull: Torbjörn Reitberger
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 02
              Text: Feb2005
              Type: published
              Y: 2005
          Identifiers:
            – Type: issn-print
              Value: 00183830
          Numbering:
            – Type: volume
              Value: 59
            – Type: issue
              Value: 2
          Titles:
            – TitleFull: Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood
              Type: main
ResultId 1