PhD Oral Defence: Mannoproteins and ß-Glucan from Saccharomyces Cerevisiae Yeast-based Products: Isolation and Characterization of Their Properties


Parasitology Building P-117, 21111 Lakeshore Road, St Anne de Bellevue, QC, H9X 3V9, CA

PhD Oral Defence of Jin Li, Food Science

Large amounts of yeast cell walls and spent brewer’s yeasts are generated as by-products by the yeast and brewery industry. These by-products are mainly used as animal feed ingredients. The structural and the compositional properties of these yeast by-products make them a potential source of value-added ingredients, mainly mannoproteins and ß-glucan, which accounted for approximately 40% (w/w) and 60% (w/w) of yeast cell wall dry weight. However, the techno-functional and health promoting properties of mannoproteins and ß-glucan are dependent on their molecular and structural properties; thus the isolation of these components with well-defined structures is a key step towards modulating their functional properties for specific applications.

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