Baker’s yeast glucan

A historical review of the development of our knowledge of the yeast cell wall was given by Phaff (I). Most information based on chemical studies has been derived, by far, from studies with cell walls from baker s yeast, Saccharomyces cerevisiae, and closely related species. The principal components of Saccharomyces walls are several types of glucan and a mannan-protein complex which may contain variable proportions of phosphate. A low content of chitin (ca. 1% ) may be present depending on the number of times a cell has produced buds. The reason for this is that chitin is present only in the bud scars (ca. 3 pm2 in area) produced on the surface of a mother cell (2), each at a different place on the cell surface. 

A theoretical ethanol production based on the achieved yields was calculated for each wet oxidation experiment. For glucan sugars, the yield obtained in SSF was used, and for the hemicellulose sugars (which were not converted by baker s yeast in the SSF) it was assumed that all recovered sugars could be converted to ethanol at a yield of 0.51 g ethanol/ g sugar (Eq. 6). These results are shown in Fig. 4 and compared to the maximum ethanol... 

The present article reviews the existing knowledge on the immunological activity of the fungal P-glucans and provides some recent results on the radioprotective and antimutagenic activity of the P-glucan isolated fr-om the baker s yeast. 

ZUlli F., Suter F., Biltz H., Nissen H.P., Birman M., Carboxymethylated P(l,3)-glucan, a beta glucan from baker s yeast helps protect skin, Cosmet. Toiletries, 111(12), 1996, 91-98. 

Zulli F, Suter F, Blitz H, Nissen HP. CM-Glucan. A biological response modifier from baker s yeast for skin care. SOFW-J 1997 123 535-538, 540-541. 

K.C. Carpenter, W.L. Breslin, T. Davidson, A. Adams, and B.K. McFarhn, Baker s yeast P-glucan supplementation increases monocytes and cytokines post-exercise Implications for infection risk , British J. Nutr, 109,478-486, 2013. 

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