Characterization of Polysaccharides from Feijoa Fruits (Acca sellowiana Berg.) and Their Utilization as Growth Substrates by Gut Commensal Bacteroides Species
Autor: | Manuela Centanni, Ian M. Sims, Susan M. Carnachan, Tracey J. Bell, Sarah L. Draper, Gerald W. Tannock |
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Rok vydání: | 2018 |
Předmět: |
0301 basic medicine
030106 microbiology Polysaccharide Feijoa Cell wall 03 medical and health sciences chemistry.chemical_compound Hydrolysis Arabinoxylan Bacteroides Humans Hemicellulose Food science Symbiosis Sugar chemistry.chemical_classification biology Plant Extracts General Chemistry biology.organism_classification Gastrointestinal Microbiome Xyloglucan 030104 developmental biology chemistry Fruit General Agricultural and Biological Sciences |
Zdroj: | Journal of Agricultural and Food Chemistry. 66:13277-13284 |
ISSN: | 1520-5118 0021-8561 |
DOI: | 10.1021/acs.jafc.8b05080 |
Popis: | Polysaccharides from feijoa fruit were extracted and analyzed; the composition of these polysaccharides conforms to those typically found in the primary cell walls of eudicotyledons. The two major polysaccharide extracts consisted of mainly pectic polysaccharides and hemicellulosic polysaccharides [xyloglucan (77%) and arabinoxylan (16%)]. A collection of commensal Bacteroides species was screened for growth in culture using these polysaccharide preparations and placed into five categories based on their preference for each substrate. Most of the species tested could utilize the pectic polysaccharides, but growth on the hemicellulose was more limited. Constituent sugar and glycosyl linkage analysis showed that species that grew on the hemicellulose fraction showed differences in their preference for the two polysaccharides in this preparation. Our data demonstrate that the members of the genus Bacteroides show differential hydrolysis of pectic polysaccharides, xyloglucan, and arabinoxylan, which might influence the structure and metabolic activities of the microbiota in the human gut. |
Databáze: | OpenAIRE |
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