Produce Color and Appearance 201
FIGURE 7.4(a) Flavan; (b) flavan-3-ol; (c) flavanone; (d) flavanonol; (e) flavone; (f) flavone-
3-ol; (g) chalcone.
O
2
3(^54)
6
7
8 1
2' 4'
5'
1'
3'
A C
B
O
A C
B
OH
a) FLAVAN b) FLAVAN-3-OL
O
A C
B
O
O
A C
B
O
OH
c) FLAVANONE d) FLAVANONOL
O
2
3
5
6
7
8 1
2' 4'
5'
1'
3'
A C
B
O
4
A C
B
O
OH
O
e) FLAVONE f) FLAVONE-3-OL
OH
A C
B
O
g) CHALCONE