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21 Cards in this Set

  • Front
  • Back
Fiber Charecteristics
Edible non-digestible lignin naturally existing in plant foods
Resistent to digestion by enzymes
Dietary Fiber V.s Functional Fiber
Actual fiber eaten v.s fiber with beneficial effect
Soluble v.s insoluble fiber
Soluble- Delays digestions and increase transit time
Insoluble- Pulls food along faster
Benefits of Soluble Fiber 4
Binds to cholesterol and other lipids and decreases LDL
Decrease glucose absorbtion rates (diabetes control)
Bind to unconjagate bile salts (dec. colon cancer)
Slow the rate of gastric emptying (dumping syndrome)
Benefits of Insoluble Fiber
Cellulose 3
Decrease transit time
Increase fecal bulk
Prevent constipation
Physiologic Effects of Fiber
Instinal 4
Influence stomach viscosity
Slows Digestion
Shifts site of Absorbtion further along
Micro-organisms produce SCFA from fiber
Physiologic Effects of Fiber
Weight 3
Reduces Hunger
Increase satiety
Reduces food intake
Physiologic Effects of Fiber
Endocrine 2
Reduces the rate atwhich glucose enters the blood (less spikes)
Lowers blood cholesterol
Recommended Fiber intake
Males 38g/kg
Females 25g/kg

Decrease for persons over 50
Can be achieved by diet (cerials fruits)
Excess Fiber 3
Decrease absorbtion of some drugs
Increase water intake required
Living or non-living organisms that beneficially affect the the host animal
Restore the microbial balance
Intestinal flora are important for resistence to disease
Microflora Chareteristics 3
500 Different kinds in healthy person
"Gut" Flora
Good bacteria crowd out disease causing bacteria.
- Toxic Secretion
- Attaching to the walls
Probiotic Organisms 4
Lactobacillus acidophilus
Lactobacillus bulbaricus
Bifidobacterium bifidum
Streptococcus thermophilus
Lactobacillus GG (Gorbach and Goldin)
Patent still pending
Benifits of Probiotics 3
Lactose Intolerance
- Yogurt Cultures
Treatment of Some diarrheas
- Antibiotic associated diarrhea
- Clostrium Difficile
Under study
- Eczema
- Allergies
Probiotics in IBD
Evidence suggest that intestinal flora control is important in pathogenisis
Increase in coliforms and a decrease in lactic acid bacteria (good)
Balance ratio between pathogenic and protective
Lactic Acid Bacteria
Most common probiotics
Feed on sugars and produce acids
Acid is inhospitable environment for many pathogenic organisms
Non-living nondigestible food ingredient used to promote the growth of normal bacteria present.
Selectivily stimule the growth of good bacteria
- Bifidobacterium
Prebiotic examples
Frutose polymers
Found in onoins, bananas, garlic, barley
Added to some foods
Widely used in japan and europe
Cannot make specific health claims
Fructooligosacharises FOS
Remain intact in small intestine (indigestable)
Fermented by bifidobacteria to lactate and SCFA
SCFA then promote water absorbtions (dec diarrhea)
SCFA also create acidic environment (dec. bacteria)
Prebiotic Benefits 3
Decrease infection
Decrease inflammation
Useful in IBD
Not proven