2. STEROLS: STRUCTURE AND DISTRIBUTION
143
TABLE VII {Continued)
UnsaponiClassification
Modiolus demissus {136,
168)
Family Pteriidae
Pinna pectinata japonica
(Spanish oyster) (154)
Pinctada martensis
(pearl oyster) (141)
Family Ostreidae (oysters)
Ostrea gigas (37, 138)
Ostrea virginica (137)
Family Pectinidae (scallops)
Pecten caurinus (168)
Pecten yessoensis (140)
Chlamis farreri nipponensis
(158)
Order Eulamellibranchia
Family Unionidae
Cristaria spatiosa (158,
163)
Anadonta woodiana lauta
(149)
Family Cardiidae
Cardium cordis (168)
Family Tridacnidae
Tridacna gigas (giant
clam) (160)
Family Veneridae
Meretrix meretrix (14%)
Dosinia japonica (161)
Saxidomus giganteus (168)
Venerupis semidecussata
(169)
Tapes philippinarum (157)
Family Macridae (surf clams)
Spisula sachalinensis (158)
Family Cyrenidae
Corbicula leana (158)
m
Corhicula sandai (158)
m
Corbicula japonica (149,
158)
m
nable
fraction
of fat
(%)
—
20
—
13
—
—
—
29
32
22
—
—
13
45
—
—
15
—
—
22
37
Sterol of
unsaponifiable
fraction
(%)
—
65
—
—
—
—
—
71
39
49
—
—
—
46
—
—
—
—
63
38
Sterol or
m.p. of steryl
acetate
152
d
120-140
133-134«
136-137
135-136*
136-137
A
137
133-135
120-130
130-147
136-137
A
156-157*
137-138*
135-136
136-137
A
120-140*
130-137
132
125-150*
120-150*
120-150*
Δ
5 ·
7 -
Sterols
in
mixture
(%)
—
13.2
—
—
—
—
—
0.73
7-12
11-14
—
—
—
0.22
—
10
—
—
—
9.3
8