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Lecture 8

KIN346 Lecture Notes - Lecture 8: Gliadin, Endosperm, Nutrient

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Danny M Pinicero

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KIN 346
Human Nutrition
October 17
- Clinical implication
- Irritable bowel syndrome
- Result of other causes (multiple causes)
- Results in little to now bowel sounds
- Little movement in alimentary canal
- Lots of pain
- Potential life threatening
- Blockage of movement of gas
- Little motility
- Little gas movement is a sign
- Development of flatus
- Certain foods
- Irritation of LI
- Fiber
- Study 1
- 8 healthy young adults and did jejunal gas infusion
- Infuse gas from nose with a tube as you drink water and feed gas
into GI system
- Measure input and output of gas
- Difference is what stays in the GI system
- Standing up (instead of supine) promoted gas flow production
- Important is standing up right is more advantageous for
promoting gas flow through GI system
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- Study 2
- 8 health young adults with same gas infusion
- Difference is you are riding a bike
- Question is if exercise helps gas movement in GI system?
- Finding is there is reduction with gas retention with exercise
- Upright standing and exercise reduced gas retention and
increased gas flow
- Retaining of gas takes up space and causes stretching, discomfort
and pain which is common with irritable bowel syndrome
- Goal is to see how to reduce gas retention (less abdominal
- Study 3
- Take people with IBS
- Exercise promoted reduced gas retention
- Lactose intolerance
- Lactose is considered a sugar (not sugar because sugar is sucrose)
- It is a simple carb
- People don’t have digestive enzyme (lactase) which comes from
intestinal cell (not accessory organ)
- Lactose = glucose + galactose (2 mono → 1 di)
- Milk contains sugar
- Purpose of milk is to nourish a newborn who need sugar
(RBC → they are anaerobic)
- Sucrose (di) = glucose + fructose (taste receptors are sensitive to fructose
which is responsible for sweet taste compared to glucose or galactose)
- No lactase
- Lactose does not get digested and goes into LI
- You are not getting calories or nutrition from the glucose that
could come from lactose
- Fermentation occurs to break it up in LI (my bacteria)
- Produces gas
- Causes bloating and pain
- Increase water secretion into digestive system
- Treatment
- Avoidance = best treatment
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