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Bifidobacterial growth stimulation by oligosaccharides generated from olive tree pruning biomass
Encarnación Ruiz1, Beatriz Gullón2, Patrícia Moura3
1Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071, Jaén, Spain.
Carbohydrate Polymers
|May 16, 2017
Summary
Oligosaccharides from olive tree pruning biomass show prebiotic potential. Fraction F1, with shorter chains, better supported Bifidobacterium growth and fermentation compared to F2.
Area of Science:
- Food Science
- Microbiology
- Biotechnology
Background:
- Olive tree pruning biomass (OTPB) is a lignocellulosic waste.
- Autohydrolysis can yield valuable oligosaccharides (OS) from OTPB.
- Prebiotics promote beneficial gut bacteria growth.
Purpose of the Study:
- To evaluate the prebiotic potential of oligosaccharides derived from OTPB.
- To compare the effects of two OS fractions (F1 and F2) on gut bacteria.
- To characterize OS fractions based on their degree of polymerization (DP).
Main Methods:
- Autohydrolysis of OTPB to obtain oligosaccharide fractions.
- Characterization of OS fractions (F1 and F2) by DP.
- In vitro fermentation assays using Bifidobacterium spp. and fecal inoculum.
- Analysis of bacterial growth, OS consumption, and organic acid production.
Main Results:
- Fraction F1 (3-6 DP) showed higher Bifidobacterium biomass formation, OS consumption, and organic acid production than F2 (4-19 DP).
- Both F1 and F2 supported similar organic acid accumulation (acetate, propionate, butyrate) with fecal inoculum.
- Bifidobacteria counts increased with both OS fractions in fecal incubations.
Conclusions:
- OS from OTPB exhibit prebiotic properties.
- Fraction F1 demonstrates superior prebiotic potential for Bifidobacterium spp. compared to F2.
- OTPB-derived OS are promising substrates for modulating gut microbiota composition.
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