DAIRY CHEMISTRY AND BIOCHEMISTRY
H B
H-C-OH
HO-C-H
HO-C-H
H-C
I
H-C
CHzOH I ' CHzOH
-$
OH
O-&D-CPLPetopyrPnaPyl~i~)-@-D-Glucopy~naPe : @.Lactose
4 OH OH [xy n
n2
(^0 3)
HO 3
H HO
OH
H
Figure 2.2 Structural formulae of a- and p-lactose. (a) Fischer projection, (b) Haworth
projection and (c) conformational formula.