Slajd13

eCH₂OH

•c

H

\?^H

HO \l

\V

V/'

OH

H

OH

Fructose has a 5-sided ring structure. whereas glucose and galactose have 6-sided ring structures.

eCH₂OH

		HOCH? „	,0	'CHpOH
HO/? y h	"V	6 |		'O?
4 0 V\9^h H 3c— 1	H/?' /°^H	h\h	HO/ ^3|	/oh
1 H	OH	OH	H

o

Glucose

o    O

Galactose    Fructose

Notice that glucose and galactose have a similar Chemical structure with the exception of the hydroxyl groups (—OH), which face in opposite directions.

• 2007 Thomson Hightt Eóucaboo