Abstract
Sanghuangporus sanghuang is a well-known pharmacodynamic
and economically important edible fungus associated with
mulberry (Morus spp.). A distinctly new exopolysaccharide
(EPS), designated SHP-2 was obtained from S. sanghuang
P0988 broth, and its structure and anti-aging prosperity were
characterized. SHP-2 was found to be composed of a backbone
of 4)-β-Manp-(14)-α-Araf-(13,4)-α-Glcp(1
3,4)-α-Glcp-(13,4)-α-Glcp-(13,4)-α-Glcp-(13,4)-α-
Glcp-(16)-α-Galp-(14)-β-Manp-(1and five branches,
including four α-D-Glcp-(1and one α-D-Manp-(1
SHP-2 was shown to increase antioxidant enzyme activities
including catalase (CAT) and superoxide dismutase (SOD)
activities, as well as trolox equivalent antioxidant (TEAC)
capacity in serum of mice pre-treated with D-Gal, while reducing
lipofuscin levels. SHP-2 exerted a favorable influence
on immune organ coefficients and ameliorated the histopathological
hepatic lesions and apoptosis in hepatocytes of Dgalactose-
aged mice almost in a dose-dependent manner.
Using the same analytical methods, on comparison with previously
studied EPS compounds (i.e. SHP-1), SHP-2 was found
to have more complex structure, larger molecule weight, and
different anti-aging properties. The results presented here suggest
that not only does EPS bioactivity vary with respect to
molecular structures and molecule weight, but that multiple
structures with different activity can be expressed by a single
fungal strain. These results may help understanding the antiaging
prosperity of these polysaccharides for use in health
foods or dietary supplements.
Citations
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