16 Chlorophylls as Food Additives
395
7
N
N
N
N
O
O
O
Mg
COOCH3
H
8
17
3
3
2
7
N
N
N
N
O
O
O
Mg
COOCH3
H
8
17
3
3
2
COH
7
N
N
N
N
O
O
Mg
COOCH3
H
OH
8
17
3
3
2
7
N
N
O
O
Mg
COOCH3
H
OH
8
17
3
3
2
7
N
N
N
N
O
O
O
Mg
COOCH3
H
8
17
3
3
2
7
N
N
N
N
O
O
O
Mg
COOCH3
H
8
17
3
3
2
COH
COH
Chlorophyll a
Chlorophyll b
Chlorophyll c 1
Chlorophyll c 2 (4)
Chlorophyll d
Chlorophyll f
Phytyl
Phytyl
Phytyl
Phytyl
7
N
N
N
N
N
N
O
COOCH 3
O
Mg
COOCH3
H
OH
8
17
3
3
2
Chlorophyll c 3
a
b
c
d
e
f
g
Fig. 16.2 Structures of chlorophylls a (a), b (b), c 1 (c), c 2 (d), c 3 (e), d (f), and f (g) including the
IUPAC-IUB carbon-atom numbering system