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Mar. Drugs 2019, 17(3), 173;

Evaluation of Prebiotic Potential of Three Marine Algae Oligosaccharides from Enzymatic Hydrolysis

College of Food Science & Engineering, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
Authors to whom correspondence should be addressed.
Received: 25 February 2019 / Revised: 9 March 2019 / Accepted: 11 March 2019 / Published: 18 March 2019
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Alginate oligosaccharides (AlgO), agarose oligosaccharides (AO), and κ-carrageenan oligosaccharides (KCO) were obtained by specific enzymatic hydrolysis method. The molecular weight distributions of the three oligosaccharides were 1.0–5.0 kDa, 0.4–1.4 kDa, and 1.0–7.0 kDa, respectively. The culture medium was supplemented with the three oligosaccharides and fermented by pig fecal microbiota in vitro, for 24 h. Each oligosaccharide was capable of increasing the concentration of short-chain fatty acids (SCFAs), especially butyric acid, and altering the microbiota composition. Linear discriminant analysis effect size (LEfSe) analysis results showed that the opportunistic pathogenic bacteria Escherichia, Shigella, and Peptoniphilus, were significantly decreased in AlgO supplemented medium. AO could improve the gut microbiota composition by enriching the abundance of Ruminococcaceae, Coprococcus, Roseburia, and Faecalibacterium. Besides, KCO could increase the abundance of SCFA microbial producers and opportunistic pathogenic flora. Therefore, these results indicate that AlgO and AO can be used as gut microbial regulators and can potentially improve animal/human gastrointestinal health and prevent gut disease, whereas the physiological function of KCO needs further evaluation. View Full-Text
Keywords: algae oligosaccharides; SCFA; fecal microbiota; butyrate-producing bacteria algae oligosaccharides; SCFA; fecal microbiota; butyrate-producing bacteria

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Han, Z.-L.; Yang, M.; Fu, X.-D.; Chen, M.; Su, Q.; Zhao, Y.-H.; Mou, H.-J. Evaluation of Prebiotic Potential of Three Marine Algae Oligosaccharides from Enzymatic Hydrolysis. Mar. Drugs 2019, 17, 173.

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