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ISRN Analytical Chemistry
Volume 2013 (2013), Article ID 248164, 4 pages
http://dx.doi.org/10.1155/2013/248164
Research Article

Solid-State 13C CP MAS NMR Spectroscopy as a Tool for Detection of (13, 16)-β-D-Glucan in Products Prepared from Pleurotus ostreatus

Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia

Received 17 June 2013; Accepted 5 July 2013

Academic Editors: R. K. Jyothi, T. Macko, and I. Zhukov

Copyright © 2013 O. Fričová and M. Koval'aková. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The 13C CP/MAS NMR solid-state NMR technique was used to detect the presence of β-D-glucan and trace compounds in samples prepared from dried, naturally grown oyster mushroom (Pleurotus ostreatus) and commercially available products of dried, specially cultivated oyster mushroom and β-D-glucan isolated from this mushroom. The NMR spectra of all samples displayed signals typical for (1→3, 1→6)-β-D-glucan; however, signals which could be assigned to other trace compounds—(1→3)-α-glucan, chitin, and proteins—were also observed in the spectra. The amount of trace compounds was negligible in the commercially available products.