Journal ArticleDOI
Study of grain cell wall structures by microscopic analysis with four different staining techniques
Emmie Dornez,Ulla Holopainen,Sven Cuyvers,Kaisa Poutanen,Jan A. Delcour,Christophe M. Courtin,Emilia Nordlund +6 more
TLDR
Four different grain cell wall staining techniques were compared and AX was mostly concentrated in nucellar epidermis and aleurone cells, whereas β-glucan was concentrated more in subaleur one cells, giving new insight into the structure of the cereal dietary fiber complex.About:
This article is published in Journal of Cereal Science.The article was published on 2011-08-12. It has received 62 citations till now. The article focuses on the topics: Aleurone & Endosperm.read more
Citations
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Journal ArticleDOI
Endosperm and aleurone cell structure in barley and wheat as studied by optical and Raman microscopy
TL;DR: In this paper, the authors used optical and Raman microscopy to localize wheat and barley grain components using selective stains and autofluorescence to image the ferulic acid and other fluorescing substances.
Journal ArticleDOI
Element distribution and iron speciation in mature wheat grains (Triticum aestivum L.) using synchrotron X-ray fluorescence microscopy mapping and X-ray absorption near-edge structure (XANES) imaging.
Niels De Brier,Sara Gomand,Erica Donner,David L. Paterson,Erik Smolders,Jan A. Delcour,Enzo Lombi +6 more
TL;DR: Speciation analysis suggests that Fe is bound to nicotianamine rather than phytate in the nucellar projection, and that more complex Fe structures may also be present, as well as revealing the complexity of the physiological processes responsible for element accumulation and bioaccessibility.
Journal ArticleDOI
Impact of hydrothermal pre-treatment to chemical composition, enzymatic digestibility and spatial distribution of cell wall polymers.
Ulla Holopainen-Mantila,Kaisa Marjamaa,Zara Merali,Andres Käsper,Peter de Bot,Anna Stiina Jääskeläinen,Keith W. Waldron,Kristiina Kruus,Tarja Tamminen +8 more
TL;DR: The sample with the highest digestibility was observed to have intensified cellulose staining, possibly reflecting the increased accessibility of cellulose, and the highest yields were obtained from the samples with a low xylan and diferulate content.
Journal ArticleDOI
Quantitative structural organisation model for wheat endosperm cell walls: Cellulose as an important constituent.
Ghanendra Gartaula,Sushil Dhital,Gabriele Netzel,Bernadine M. Flanagan,Gleb E. Yakubov,Cherie T. Beahan,Helen Collins,Rachel A. Burton,Antony Bacic,Michael J. Gidley +9 more
TL;DR: A model for endosperm cell wall structural organisation is proposed, based on a core of cellulose and interacting non-cellulosic polysaccharides which anchors AX that in turn retains MLGs through physical entanglement.
Journal ArticleDOI
Iron and zinc complexation in wild-type and ferritin-expressing wheat grain: implications for mineral transport into developing grain
Andrew L. Neal,Kalotina Geraki,Søren Borg,Paul D. Quinn,J. Fred W. Mosselmans,Henrik Brinch-Pedersen,Peter R. Shewry +6 more
TL;DR: Derivative X-ray absorption spectra suggest that mineral complexation in the transfer region of ferritin-expressing grains is quite different from that in wild-type grain, which may explain why the raised levels of minerals transported to the developing grain accumulate within the crease region of the transgenic grain.
References
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Journal ArticleDOI
Phytochemicals and dietary fiber components in rye varieties in the HEALTHGRAIN Diversity Screen.
Annica A.M. Andersson,Anna-Maija Lampi,Laura Nyström,Vieno Piironen,Li Li,Jane L. Ward,Kurt Gebruers,Christophe M. Courtin,Jan A. Delcour,Danuta Boros,Anna Fraś,Wioletta Dynkowska,Mariann Rakszegi,Zoltán Bedo,Peter R. Shewry,Per Åman +15 more
TL;DR: The 10 selected rye samples comprising old populations and old and modern varieties from different ecological regions of Europe demonstrate high natural variation in their composition and show that landraces and old populations are useful genetic resources for plant breeding.
Journal ArticleDOI
Xylans and xylanases: Edited by J. Visser, G. Beldman, M.A. Kusters-van Someren and A.G.J. Voragen, Elsevier, Amsterdam, xiii + 576pp. price US$208.50. ISBN 0-444-89477-21992
John F. Kennedy,Jiro Shimizu +1 more
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Structural determinants of the substrate specificities of xylanases from different glycoside hydrolase families.
TL;DR: This review gave a concise overview of the structure–function relationship of xylanases from GH5, 8, 10, and 11 and the structural basis for inter- and intrafamily variation in xylanase substrate specificity was discussed.
Journal ArticleDOI
Plant glycoside hydrolases involved in cell wall polysaccharide degradation.
Zoran Minic,Lise Jouanin +1 more
TL;DR: Current knowledge about plant glycoside hydrolases that participate in the degradation and reorganisation of cell wall polysaccharides in plants focussing particularly on those from Arabidopsis thaliana are summarized.
Journal ArticleDOI
Dietary fiber type reflects physiological functionality: comparison of grain fiber, inulin, and polydextrose
TL;DR: The reported effects on postprandial blood glucose and fasting cholesterol levels have been modest, but grain fibers also show variable effects, and new biomarkers are needed to link the physiological functions of specific fibers with long-term health benefits.