Many interesting biological activities have been reported related to the presence of β-glucans from different species of mushrooms. In this work, β-glucans were isolated from the polysaccharide of the fruiting bodies of Agaricus blazei Murill known as Agaricus brasiliensis. β-Glucans were obtained with a specific procedure using thymol. The isolated material was characterized by FTIR assignments which indicate the presence of polysaccharides and some amount of protein in the obtained precipitate. The presence of β-glucans was evidenced by recording the band around 890 cm-1 relative to the deformation of that bond. 1H and 13C NMR as well as two-dimensional COSY and HMQC spectra were used for characterization of the β-glucans which showed that the isolated material is constituted mainly by β-(1-6) glucans.

NMR, FTIR, Agaricus blazei Murill, β-glucan-protein complex

13C NMR data:
Linkage	Residue	C1	C2	C3	C4	C5	C6
	bDGlcp	103.2	73.2	75.8	69.7	75.1	69.0

There is only one chemically distinct structure:

SVGMWSMILES3D molIonize

 

*OC[C@H]1O[C@@H](*)[C@H](O)[C@@H](O)[C@@H]1O

162.141 g/mol (C₆H₁₀R₂O₅, R = next and previous repeats, not counted in mol weight)