CARBOHYDRATES 



31 



STARCH 



CHgOH 



CHjOH 



D-G-LUCOSE 



OH ^ '^ 



G-LUCOSE-I- 

 PHOSPHATE 



H2OPO3H2 



JH2OPO3H2 



CH^H 



HOCH 



I 

 HOCH 4, 



HCOH 



I 

 HCOH 



CHjOH 

 MANNITOL 



D-LAGTIC ACID 



0=COH 

 I 

 HCOH 

 I 

 CH3 



'OPO-H^ 



OH ^ ^ 

 G-LUCOSE-1,6- 

 DIPHOSPHATE 



CH2OPO3H2 



HOCH MANNITOL-I- 

 I PHOSPHATE 



HOCH 



I 

 HCOH 



I 

 HCOH 



I 



CHjOH 



G-LUCOSE-6- 

 PHOSPHATE 



CH2OPO3H2 



fc 



tV^ 



/HO 



/ MANNOSE-6- 

 ( PHOSPHATE 



^CHjOH 



FRUCTOSE-6- 

 'HOSPHATE 



CH2OH HoN— yOH 



O-MANNOSE 



CH3CH2OH 



ETHANOL 



H«0,POCH« 

 2 3 . 2^^oH 



/CH2OPO3H2PH2OPO3H2 



FRUCT0SE-l,6-\ — ^ ?~° 

 DIPHOSPHATE ) y| CH2OH 



CH3^H 

 ^ ACETALDEHYDE 



V 



PHOSPHATE 



^ 



CO, 



HC=0 



I 

 HCOH 



CH^POg Hg ^C0P03H2 



D-G-LYCERALDEHYDEl**^ HCOH 



3-phosphateI ^ I 



0=COH 

 I 



0=0 

 I 



CH3 



PYRUVIC 

 ACID 



0=C0H 



COPO3H2 ^ 

 CHj 



0=COH 

 I 



0=COH 

 I 



X CH2OPO3H2 



1,3-01 PHOSPHO- 



HCOPOjHji-^HCOH 



PHOSPHOENOL- 



PYRUVIC 

 ACID 



CH2OH 



2-PHOSPHO- 

 G-LYCERIC 

 ACID 



I 



OLYCERIC 

 ACID 



CHjOPOjHj 



3-PH0SPH0&LYCERIC 

 ACID 



FIG URE 2-7: GLYCOL YTIC AND RE LA TED PA THWA YS 



