General Metabolism And Function Of The Microbiota

The bacteria of the intestinal microbiota are predominantly anaerobic with a small percentage of facultative anaerobes. Therefore, intestinal bacteria do not use oxygen as a terminal election acceptor, and derive their energy from anaerobic respiration or substrate level phosphorylation. The magnitude of energy derived is the difference in redox potential between the substrate, and the products formed (5,6). The major overall balance of the intestinal microbiota derives from the ability to convert available substrates, principally originating from oral ingestion by the host of nutrients, fiber, and intestinal secretions or endogenously host synthesized compounds entering the intestine via the bile into the biomass that makes up the microorganisms in the intestine. The total biomass is principally controlled by space constraints, transit time of the digesta, and substrate availability. In general, approximately 50% of the fecal mass is composed of intestinal microorganisms. In addition to the utilization of substrates derived from the host, the intestinal microbiota can provide the host with energy mainly in the form of short chain fatty acids, and nutritive benefit by producing certain vitamins.

Pregnancy And Childbirth

Pregnancy And Childbirth

If Pregnancy Is Something That Frightens You, It's Time To Convert Your Fear Into Joy. Ready To Give Birth To A Child? Is The New Status Hitting Your State Of Mind? Are You Still Scared To Undergo All The Pain That Your Best Friend Underwent Just A Few Days Back? Not Convinced With The Answers Given By The Experts?

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