Abstract #292

# 292
Understanding polysaccharide biosynthesis in lactic acid bacteria: Lessons from whole-genome sequencing and systemic approaches.
Ana Rute Neves*1, 1Chr. Hansen A/S, Hørsholm, Denmark.

Production of polysaccharides has long been associated with the technological, functional and health promoting benefits of Lactic Acid Bacteria (LAB). In particular, the capsular polysaccharides and exopolysaccharides (CPS and EPS) have been implicated in modulation of the rheological properties of fermented products. For this reason, screening and selection of exocellular polysaccharide producing LAB has been extensively carried out by academia and industry. To further exploit the ability of LAB to produce polysaccharides, an in-depth understanding of their biochemistry, genetics, biosynthetic pathways, regulation and structure-function relationships is mandatory. Here we will present our efforts comprising a multilevel approach to characterize at the systems level LAB producing polysaccharides. To this end, we combined high throughput experimentation and omics data, genetic features of the clusters and structural characterization of the polysaccharides with computational approaches for data integration. An in-depth understanding of polysaccharide biology in connection to application is expected to facilitate the selection and improvement of LAB strains with superior texturing properties.

Key Words: texture, polysaccharides, lactic acid bacteria

Speaker Bio
Ana Rute Neves is the senior manager for the Department of Bacterial Physiology and Improvement in the Discovery unit of the R&D organization at Chr. Hansen. She is a biochemist with about 20 years’ experience in bacterial physiology and metabolic engineering. Her expertise covers metabolite profiling, fermentation, transcriptomics, genetic engineering, and strain development. Before joining Chr. Hansen, Rute headed the Bacterial Metabolic Engineering group at the NNF Center for Biosustainability, DTU, Denmark, and before that, the Lactic Acid Bacteria and in vivo NMR group at ITQB-UNL, Portugal. Rute is a co-author of 57 peer-reviewed publications, has contributed with over 40 communications by invitation or selection, and is co-inventor of 1 patent. She has coordinated several R&D projects with various national and international collaborations. Rute supervised over 30 students and researchers in academic settings before joining Chr. Hansen. She acts as reviewer for various peer-reviewed journals, has participated in several scientific evaluation committees, and is a member of scientific advisory boards.