Some mushrooms seem to be composed of unusually high amounts of alpha-glucans; in particular, the cap probes seem to
be formed of polysaccharides with alpha-bindings: The species Boletus erythropus Pers. showed unusually high amounts of
alpha-glucans: 4.25 g/100 g dm in cap and 12.16 g/100 g dm in stipe. Thus, alpha-glucan accounts for approximately a quarter of all glucan in cap material and they account for almost 50% of the stipe. In addition, the cap probe of Phallus impudicus (L. ex Fr.) showed a very high alpha-glucan content in its cap, which equals up to about half of all glucans (30.84 g/100 g dm). In addition, the species Coprinus comatus (O.F. Müll.) Pers. shows a high
alpha-glucan content in its cap of 4.52 g/100 g, which equals approximately 30% of the total glucan content. Kuehneromyces mutabilis (Schaeff. ex Fr.) Sing&Smith also showed a very high alpha-glucan content with 11.06 g/100 g dm (all glucans:
29.75 g/100 g dm.