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  1. AU="Owen, Noel L"
  2. AU=Liu Xiaolei
  3. AU="Fırıncıoğluları, Ali"
  4. AU="Piepel, Christiane"
  5. AU="Saremi, Saeid"
  6. AU="Dunxian She"

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  1. Article: Endophytes--the chemical synthesizers inside plants.

    Owen, Noel L / Hundley, Nicholas

    Science progress

    2004  Volume 87, Issue Pt 2, Page(s) 79–99

    Abstract: Endophytes are microbial entities that live within living tissues of plants. In most cases their relationship with the host plant is symbiotic and probably mutualistic. Many are capable of synthesizing bio-active compounds that can be used by the plant ... ...

    Abstract Endophytes are microbial entities that live within living tissues of plants. In most cases their relationship with the host plant is symbiotic and probably mutualistic. Many are capable of synthesizing bio-active compounds that can be used by the plant for defense against pathogenic fungi and bacteria. Some of these compounds have proven usefulfor novel drug discovery. By encouraging the endophytes to grow outside the plant in nutrient rich media, it is possible to harvest the bio-active compounds that they produce. However, much needs to be discovered and understood about the host/endophyte relationship before we can fully utilize endophytes in the discovery of medicinally important compounds.
    MeSH term(s) Bacteria/growth & development ; Bacteria/isolation & purification ; Bacteria/metabolism ; Fungi/growth & development ; Fungi/isolation & purification ; Fungi/metabolism ; Plants/microbiology ; Plants, Medicinal/microbiology ; Symbiosis
    Language English
    Publishing date 2004
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 128412-5
    ISSN 0036-8504 ; 0302-1785
    ISSN 0036-8504 ; 0302-1785
    DOI 10.3184/003685004783238553
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.B 731: Show issues Location:
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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  2. Article: Natural products from medicinal plants: non-alkaloidal natural constituents of the Thalictrum species.

    Khamidullina, Elena A / Gromova, Alexandra S / Lutsky, Vladislav I / Owen, Noel L

    Natural product reports

    2006  Volume 23, Issue 1, Page(s) 117–129

    Abstract: Thalictrum is an important plant genus that is widely used in traditional medicine. In this review considerable attention has been given to triterpenoid saponins in connection with their specific distribution in the Thalictrum genus and with their ... ...

    Abstract Thalictrum is an important plant genus that is widely used in traditional medicine. In this review considerable attention has been given to triterpenoid saponins in connection with their specific distribution in the Thalictrum genus and with their biological activity. All other non-alkaloid compounds isolated from the Thalictrum genus are also reviewed; these metabolites are discussed in relation to their structural features and to their role in the plants.
    MeSH term(s) Biological Products ; Fatty Acids/chemistry ; Fatty Acids/isolation & purification ; Flavonoids/chemistry ; Flavonoids/isolation & purification ; Glycosides/chemistry ; Glycosides/isolation & purification ; Molecular Structure ; Phenols/chemistry ; Phenols/isolation & purification ; Phytosterols/chemistry ; Phytosterols/isolation & purification ; Plants, Medicinal/chemistry ; Terpenes/chemistry ; Terpenes/isolation & purification ; Thalictrum/chemistry
    Chemical Substances Biological Products ; Fatty Acids ; Flavonoids ; Glycosides ; Phenols ; Phytosterols ; Terpenes
    Language English
    Publishing date 2006-02
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2002546-4
    ISSN 1460-4752 ; 0265-0568
    ISSN (online) 1460-4752
    ISSN 0265-0568
    DOI 10.1039/b504014k
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Fourier transform infrared studies of heterogeneity, photodegradation, and lignin/hemicellulose ratios within hardwoods and softwoods.

    Orton, Christopher R / Parkinson, Dilworth Y / Evans, Philip D / Owen, Noel L

    Applied spectroscopy

    2004  Volume 58, Issue 11, Page(s) 1265–1271

    Abstract: There is little information available on the variation in lignin content of growth rings in hardwoods. This study examines whether infrared microscopy can detect intra-incremental differences in the chemical composition of three hardwoods (R. ... ...

    Abstract There is little information available on the variation in lignin content of growth rings in hardwoods. This study examines whether infrared microscopy can detect intra-incremental differences in the chemical composition of three hardwoods (R. pseudoacacia, P. Americana, and G. triacanthos) and the effect of such differences on the delignification of the hardwoods during weathering. Earlywood has higher lignin content than latewood in R. pseudoacacia and P. americana, but the opposite was found for G. triacanthos. The delignification of the earlywood and latewood during weathering varied for the three species. It was greater in the earlywood of R. pseuoacacia, whereas in P. americana and G. triacanthus it was more pronounced in latewood. Differences in density and lignin content of earlywood and latewood help explain these differences. In addition, a deconvoluting software package was used to determine whether it is possible to estimate the lignin/hemicellulose ratio in softwoods and hardwoods. Results from the 1760-1580 cm(-1) region provided data that can be used to estimate the lignin/hemicellulose ratio of softwoods and hardwoods. This information can be obtained far more easily using infrared microscopy than with conventional wet chemical techniques, potentially allowing characterization of greater numbers of species than has hitherto been possible.
    MeSH term(s) Gleditsia/chemistry ; Lignin/analysis ; Photochemistry ; Polysaccharides/analysis ; Prunus/chemistry ; Robinia/chemistry ; Species Specificity ; Spectroscopy, Fourier Transform Infrared ; Trees/chemistry ; Wood
    Chemical Substances Polysaccharides ; hemicellulose (8024-50-8) ; Lignin (9005-53-2)
    Language English
    Publishing date 2004-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 0003-7028
    ISSN 0003-7028
    DOI 10.1366/0003702042475385
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Wood used by Stradivari and Guarneri.

    Nagyvary, Joseph / DiVerdi, Joseph A / Owen, Noel L / Tolley, H Dennis

    Nature

    2006  Volume 444, Issue 7119, Page(s) 565

    Abstract: Whether or not the great Italian violin-makers used wood that had been chemically processed in order to preserve it and enhance the instrument's sound quality has long been a contentious issue. Here we use nuclear magnetic resonance and infrared ... ...

    Abstract Whether or not the great Italian violin-makers used wood that had been chemically processed in order to preserve it and enhance the instrument's sound quality has long been a contentious issue. Here we use nuclear magnetic resonance and infrared spectroscopy to analyse organic matter in wood taken from antique instruments made by Stradivari and Guarneri del Gesu. Our results indicate that the wood used by the masters could indeed have been chemically treated, a technique that may inspire an approach to violin making that is more chemistry-based.
    Language English
    Publishing date 2006-11-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/444565a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 26: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MG 9: Show issues
    Zs.MO 244: Show issues

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  5. Book: Internal rotation and inversion

    Lister, David G / Macdonald, John N / Owen, Noel L

    an introd. to large amplitude motions in molecules

    1978  

    Author's details David G. Lister; John N. Macdonald; Noel L. Owen
    Language English
    Size XII, 246 S
    Document type Book
    ISBN 0124522505 ; 9780124522503
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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