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 AiM  Vol.8 No.7 , July 2018
The Effect of the Hot Water Extracts of the Paecilomyces hepiali and Cordyceps militaris Mycelia on the Growth of Gastrointestinal Bacteria
Abstract: The gastrointestinal health is very important aspect concerning human health. It refers to nutrient and vitamin absorption, food digestion and various infectious diseases. The Paecilomyces hepiali and Cordyceps militaris are highly enriched with cordycepin and ergosterol which are considered as anti bacterial substances. Present study finds out comparative effect of hot water extract of particular fungal material on growth of six species of gastrointestinal bacteria that belong to both aerobic and anaerobic and, consist with harmful and commensal categories. The appropriate concentration level of hot water extract of both strains was identified. The individual specific bacterial growing media were prepared and calculated; amounts of bacteria cultures were inoculated by using micro pipettes. The optical density and number of bacterial colonies were measured after 24 hours. The pure mycelial extract of P. hepiali with 2 × 10-3 g/ml of concentration has significant effect on depleting the growth of E. coli, E. faecalis, S. aureus, L. gasseri and B. ovatus bacteria. B. longum has no significant effect by particular extract. Same type of extract of C. militaris has significantly reduced the growth of every bacteria used in this study. Hot water extract of C. militaris cultivated on soy bean has significant growth retardation toward E. coli, E. faecalis, S. aureus and L. gasseri. It has stimulated the growth of B. ovatus and B. longum which are considered as beneficial bacteria for human gut. This study shows that extracts of both mycelia include antimicrobial substances like cordycepin and ergosterol which can be used as food supplements to enhance human gut health.
Cite this paper: Gamage, S. , Nakayama, J. , Fuyuno, Y. and Ohga, S. (2018) The Effect of the Hot Water Extracts of the Paecilomyces hepiali and Cordyceps militaris Mycelia on the Growth of Gastrointestinal Bacteria. Advances in Microbiology, 8, 490-505. doi: 10.4236/aim.2018.87034.
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