A water-
soluble
poly
saccharide, (Fr. I) i
solated from the aqueou
s extract of an edible mu
shroom,
Volvariella diplasia, i
s com
po
sed of <
span cla
ss="
smCa
ps">d
span>-gluco
se, <
span cla
ss="
smCa
ps">d
span>-manno
se, and <
span cla
ss="
smCa
ps">d
span>-galacto
se in a molar ratio 3:1:1. Com
po
sitional analy
si
s, methylation analy
si
s,
periodate oxidation
study, Smith degradation, and NMR
studie
s (<
su
p>1
su
p>H, <
su
p>13
su
p>C, DQF-COSY, TOCSY, NOESY, ROESY, HMQC, and HMBC) revealed the
pre
sence of the following re
peating unit in the
poly
saccharide:
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