Cited by 252Seaweed-derived Bioactive CompoundsMicrobial Metabolites in Food BiotechnologyGut microbiota and health

In vitro fermentation and prebiotic potential of novel low molecular weight polysaccharides derived from agar and alginate seaweeds

Ramnani, Priya, Chitarrari, Roberto, Tuohy, Kieran, Grant, John, Hotchkiss, Sarah, Philp, Kevin, Campbell, Ross, Gill, Chris +1 more·2012·Anaerobe

Abstract

Fermentation properties and prebiotic potential of novel low molecular weight polysaccharides (LMWPs) derived from agar and alginate bearing seaweeds was investigated. Ten LMWPs were supplemented to pH, temperature controlled anaerobic batch cultures inoculated with human feces from three donors, in triplicate. Microbiota changes were monitored using Fluorescent in-situ hybridization and short chain fatty acids, the fermentation end products were analysed using gas chromatography. Of the ten LMWPs tested, Gelidium seaweed CC2253 of molecular weight 64.64 KDa showed a significant increase in bifidobacterial populations from log(10) 8.06 at 0 h to log(10) 8.55 at 24 h (p = 0.018). For total bacterial populations, alginate powder CC2238 produced a significant increase from log(10) 9.01 at 0 h to log(10) 9.58 at 24 h (p = 0.032). No changes were observed in the other bacterial groups tested viz. Bacteroides, Lactobacilli/Enterococci, Eubacterium rectale/Clostridium coccoides and Clostridium histolyticum. The polysaccharides also showed significant increases in total SCFA production, particularly acetic and propionic acids, indicating that they were readily fermented. In conclusion, some LMWPs derived from agar and alginate bearing seaweeds were fermented by gut bacteria and exhibited potential to be used a novel source of prebiotics.

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Crossref · 10.1016/j.anaerobe.2011.08.003

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  • Most seaweed polysaccharides cannot be digested by humans and can be considered dietary fiber, constituting 33%-75% of total composition; soluble fractions account for 50%-85% of total dietary fiber content.

    “One of the most important nutritionally relevant components of seaweeds are polysaccharides, most of them cannot be digested by humans, and thus, they can be considered as dietary fiber (33%–75% of the total composition) [96,97]. In turn, soluble fractions account between 50% and 85% of total dietary fiber content [96].”

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Authors
Ramnani, P., Chitarrari, R., Tuohy, K., Grant, J., Hotchkiss, S., Philp, K., Campbell, R., Gill, C., & Rowland, I.
Affiliations
  • University of Reading (GB)
  • Fondazione Edmund Mach (IT)
  • CyberColloids (IE)
  • University of Ulster (GB)
Corresponding author
Ramnani, Priya
Venue
Anaerobe
Publisher
Elsevier BV
Published
2012-02
Volume
18
Issue
1
Pages
1-6
ISSN
1075-9964 (ISSN-L)
OpenAlex
W2145123908
Cited by
252
References
32
Citations by year
2026: 10 · 2025: 19 · 2024: 19 · 2023: 17 · 2022: 23 · 2021: 21 · 2020: 26 · 2019: 20 · 2018: 16 · 2017: 21 · 2016: 19 · 2015: 13 · 2014: 13 · 2013: 6 · 2012: 9
FWCI
13.58
Type
journal article
Language
en
Open access
closed
Locations
  • Anaerobe (publishedVersion)
  • PubMed (publishedVersion)
  • CINECA IRIS Institutional Research Information System (Fondazione Edmund Mach) (submittedVersion)
Funders
  • European Commission
  • Research Executive Agency
Topics
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
  • Health Sciences › Nursing › Nutrition and Dietetics › Microbial Metabolites in Food Biotechnology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
Keywords
low molecular weight polysaccharides, agar, alginate, seaweed, prebiotics, human fecal microbiota, short-chain fatty acids, Bifidobacterium, anaerobic batch culture, Gelidium, Bacteroides, Clostridium histolyticum
MeSH terms
Adult, Agar, Fatty Acids, Volatile, Feces, Female, Fermentation, Humans, Male, Molecular Weight, Polysaccharides, Seaweed, Time Factors, Gastrointestinal Tract, Metagenome, Prebiotics, Batch Cell Culture Techniques

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