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Week 5 - Carbohydrates
Facts about consumption of carbohydrates in US
Average intake is 139 pounds annually
Classification: Simple Sugars
Monosaccharides
Glucose
Dextrose, fruits, vegetables, corn syrups, honey
Fructose
Levulose, fruits, vegetables, corn syrups, honey
Galactose
Lactose, milk sugar
Main points
Simplest CHO
Absorbed without further digestion
Provides energy for cell via the bloodstream
Disaccharides
Week 5 - Carbohydrates 1
, Lactose
milk only
Maltose
beers, cereals
Sucrose
cane, beet, maple sugar, molasses, fruits, vegetables 1 molecule of
glucose + 1 molecule of fructose)
Main Points
Intact disaccharides cannot be metabolized by the body → digestion >
hydrolyzed into constituent monosaccharides
Other nutritive sweeteners: Sugar alcohol
Characteristics
Also: Polyols
Week 5 - Carbohydrates 2
, Sweetened with less energy per gram than sucrose (avraging 2.4
kcal/g)
Provide calories but are used in smaller amounts
Potential to cause gastric upset (laxative effect)
Sorbitol & Mannitol
Week 5 - Carbohydrates 3
Week 5 - Carbohydrates
Facts about consumption of carbohydrates in US
Average intake is 139 pounds annually
Classification: Simple Sugars
Monosaccharides
Glucose
Dextrose, fruits, vegetables, corn syrups, honey
Fructose
Levulose, fruits, vegetables, corn syrups, honey
Galactose
Lactose, milk sugar
Main points
Simplest CHO
Absorbed without further digestion
Provides energy for cell via the bloodstream
Disaccharides
Week 5 - Carbohydrates 1
, Lactose
milk only
Maltose
beers, cereals
Sucrose
cane, beet, maple sugar, molasses, fruits, vegetables 1 molecule of
glucose + 1 molecule of fructose)
Main Points
Intact disaccharides cannot be metabolized by the body → digestion >
hydrolyzed into constituent monosaccharides
Other nutritive sweeteners: Sugar alcohol
Characteristics
Also: Polyols
Week 5 - Carbohydrates 2
, Sweetened with less energy per gram than sucrose (avraging 2.4
kcal/g)
Provide calories but are used in smaller amounts
Potential to cause gastric upset (laxative effect)
Sorbitol & Mannitol
Week 5 - Carbohydrates 3
