Carbohydrates

Question 1

Nutrition Labeling for Carbohydrates

Answer 1

Total carbohydrates
	-Dietary fiber
		*Soluble fiber
		*Insoluble fiber
	-Sugars
	        *Added sugar
		*Sugar alcohol
	-Other Carbohydrates
		*The difference between total
		carbohydrate and the sum of dietary fiber, 
                 sugars, and sugar alcohols, if declared

Question 2

DRV for Carbohydrates

Answer 2

300 g
Derived from 60% of a 2000 kcal diet (using 4 kcal/g as average value for carbs).
The 60% are derived from 100 - (% DRV protein + fat)

Question 3

D-glucose is..

Answer 3

Most abundant carbohydrate and organic molecule in nature

Question 4

D-Sugars

Answer 4

hydroxyl group of the highest numbered chiral carbon positioned to the right-hand side
Found more often in nature than L-sugars

Question 5

Aldoses

Answer 5

monosaccharides with a aldehyde for the carbonyl

suffix -ose

Question 6

Ketoses

Answer 6

monosaccharides with a ketone for the carbonyl group

suffix -ulose

Question 7

Ring closing

Answer 7

Hemi-acetal formation
Acid catalyzed reaction of alcohol and carboxyl
5 member ring - furanose
6 member ring - pyranose