Probiotics and Prebiotics

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  • Created by: Alex
  • Created on: 01-05-13 15:52
Probiotics
Live microorganisms that have a health benefit for the host
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Origin of human probiotics
Newborns with sterile gastrointestinal tract inoculated during birth & through colostrum(breast milk)-improve digestion, coat bowel, protect from bad microbes. later maintained/affected by feeding, hospitalization & antibiotic use
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% of good/bad bacteria for good intestional health
Good-85% Bad-15%
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Functional characteristics of probiotics
Adhesion, colonisation potentioal of mucosal, antimicrobial antagonism against pathogend
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Probiotics must be
Non-toxic, non-pathogenic, able to survive passage through gastrointestional tract, remain viable during storage and muse, exert on one more beneficial effect on the host
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Source of Probiotics
Food- Fermented meat, dairy and vegetables. Supplements -powders, capsules or tablets
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Health benefits of probiotics
Regulate balance of gut flora, improve digestion of lactose, stimulation of the immune system
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Regulation of gut Microflora
improve gut mucosal barrier-coats epithelium with layer of probiotics-decreases pathogen adhesion, Reduce gastrointestinal infections, produce antimicrobial substances
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Improv digestion of lactose
Production of Beta-galactosidase. breakdown of lactose to glucose and galactose - enhances absorption. alleviate symptoms of lactose intolerance
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Stimulation of the immune system
up-regulate immune response, down regulate inflammatory response
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Prebiotics
Non-digestible food ingredients that beneficially affect the host by selectively stimulating the growth, and or/activity of one or a limited number of bacteria in the colon
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Characteristic of prebiotics
Reaches large colon intact, specific metabolism thats more beneficial towards advantageous bacteria, active at nutritionally feasible does, lack of side effect & persistence through colon - slow fermentation
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Examples of Prebiotics
Non-digestible oligosaccharides - can be fermented into short chain carboxylic acids, sensetive to metabolic effects of colonic bacteria, Osidic bond resistant to intestinal digestive enzymes
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Sources of prebiotics
Non-digestible oligosaccharides, plants, human milk and colostrum
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Health benefits of prebiotics
Production of short-chain fatty acids, improved mineral absorption and balance, acidification of colonic contens - raised conc of ionised minerals which favours passive diffusion of them
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Card 2

Front

Origin of human probiotics

Back

Newborns with sterile gastrointestinal tract inoculated during birth & through colostrum(breast milk)-improve digestion, coat bowel, protect from bad microbes. later maintained/affected by feeding, hospitalization & antibiotic use

Card 3

Front

% of good/bad bacteria for good intestional health

Back

Preview of the front of card 3

Card 4

Front

Functional characteristics of probiotics

Back

Preview of the front of card 4

Card 5

Front

Probiotics must be

Back

Preview of the front of card 5
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