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Utilization of Complex Pectic Polysaccharides from New Zealand Plants ( Tetragonia tetragonioides and Corynocarpus laevigatus ) by Gut Bacteroides Species.
- Source :
-
Journal of agricultural and food chemistry [J Agric Food Chem] 2019 Jul 10; Vol. 67 (27), pp. 7755-7764. Date of Electronic Publication: 2019 Jun 28. - Publication Year :
- 2019
-
Abstract
- Pectic polysaccharides from New Zealand (NZ) spinach ( Tetragonia tetragonioides ) and karaka berries ( Corynocarpus laevigatus ) were extracted and analyzed. NZ spinach polysaccharides comprised mostly homogalacturonan (64.4%) and rhamnogalacturonan I (5.8%), with side chains of arabinan (8.1%), galactan (2.2%), and type II arabinogalactan (7.1%); karaka berry polysaccharides comprised homogalacturonan (21.8%) and rhamnogalacturonan I (10.0%), with greater proportions of side chains (arabinan, 15.6%; galactan, 23.8%; and type II arabinogalactan, 19.3%). Screening of gut commensal Bacteroides showed that six were able to grow on the NZ spinach extract, while five were able to grow on the karaka berry extract. Analysis of the polysaccharides remaining after fermentation, by size-exclusion chromatography and constituent sugar analysis, showed that the Bacteroides species that grew on these two substrates showed preferences for the different pectic polysaccharide types. Our data suggest that, to completely degrade and utilize the complex pectin structures found in plants, members of Bacteroides and other bowel bacteria work as metabolic consortia.
- Subjects :
- Bacteroides metabolism
Fermentation
Fruit chemistry
Gastrointestinal Microbiome physiology
New Zealand
Pectins analysis
Pectins chemistry
Plant Leaves chemistry
Polysaccharides chemistry
Polysaccharides isolation & purification
Aizoaceae chemistry
Bacteroides growth & development
Magnoliopsida chemistry
Pectins metabolism
Polysaccharides metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1520-5118
- Volume :
- 67
- Issue :
- 27
- Database :
- MEDLINE
- Journal :
- Journal of agricultural and food chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 31251611
- Full Text :
- https://doi.org/10.1021/acs.jafc.9b02429