Abstract:
:A fungus of Pestalotiopsis species produced an extracellular, water-soluble polysaccharide (PS-N). PS-N exhibited significant hypoglycemic activity in streptozotocin-induced diabetic mice following intraperitoneal administration and had an effect on oral glucose tolerance in normal mice following oral administration. PS-N ([alpha]D +34.5 degrees in water) was homogeneous on gel chromatography, it is composed of galactose and mannose in a molar ratio of 1:9, and its molecular weight was estimated by gel chromatography to be about 24,000. Its structure was investigated by a combination of chemical and spectroscopic methods. The results indicated that PS-N, a highly branched galactomannan, is composed of beta-(1-->3)-linked D-galactofuranosyl and non-reducing terminal beta-D-galactofuranosyl residues, in addition to alpha-D-mannopyranosyl residues of a yeast mannan type.
journal_name
Biol Pharm Bulljournal_title
Biological & pharmaceutical bulletinauthors
Kiho T,Itahashi S,Sakushima M,Matsunaga T,Usui S,Ukai S,Mori H,Sakamoto H,Ishiguro Ydoi
10.1248/bpb.20.118subject
Has Abstractpub_date
1997-02-01 00:00:00pages
118-21issue
2eissn
0918-6158issn
1347-5215journal_volume
20pub_type
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