Susan Tosh
Susan Tosh
Associate Professor


Room
THN 118
Phone
613-562-5800 ext. 1596


Biography

Dr. Susan Tosh is an Associate Professor at the University of Ottawa. She holds a PhD in Food Science from the University of Guelph. Dr. Tosh has extensive experience as a researcher and director of research teams, completing several national and international research projects and establishing fruitful collaborative links between the food industry, government and universities.

Dr. Tosh’s area of expertise is in the characteristics and health benefits of dietary fibres from cereal and legume crops. She is interested in how research on functional foods can inform the development of sustainable and healthy food systems. Dr. Tosh is recognized for her investigation of the mechanisms by which oat β-glucan reduces blood glucose and serum cholesterol. She has also conducted research on the health benefits of barley, lentil, chickpea, bean, pea and soy fibres. She has developed simulated digestion methods to investigate how fibre affects the breakdown and absorption of nutrients. These simulated digestion models have shown that food made from the same ingredients but prepared in different ways breakdown at different rates in the gastrointestinal tract.

Her publication track record includes more than 80 peer-reviewed articles and 3 book chapters. She has also contributed to the development and presentation of numerous technical reports for industrial partners and contributed regularly to scientific conferences in Canada and abroad, as a principal investigator or as a guest speaker.

Publications

  • Acquah, C., Ohemeng-Boahen, G., Power, K.A., Tosh, S.M. (2021) The Effect of Processing on Bioactive Compounds and Nutritional Qualities of Pulses in Meeting the Sustainable Development Goal 2. Frontiers in Sustainable Food Systems, 5, art. no. 681662. DOI: 10.3389/fsufs.2021.681662. Open Access
  • Tosh, S.M., Bordenave, N. (2021) Emerging science on benefits of whole grain oat and barley and their soluble dietary fibers for heart health, glycemic response, and gut microbiota. Nutrition Reviews, 78, pp. 13-20. DOI: 10.1093/NUTRIT/NUZ085. Open Access
  • Northrop, G., Tosh, S.M., Bordenave, N. (2020) Quantitative characterization of the digestive viscosity profile of cereal soluble dietary fibers using in vitro digestion in Rapid ViscoAnalyzer. Carbohydrate Polymers, 248, art. no. 116807. DOI: 10.1016/j.carbpol.2020.116807
  • Wolever, T.M.S., Mattila, O., Rosa-Sibakov, N., Tosh, S.M., Jenkins, A.L., Ezatagha, A., Duss, R., Steinert, R.E. (2020) Effect of varying molecular weight of oat β-glucan taken just before eating on postprandial glycemic response in healthy humans. Nutrients, 12 (8), art. no. 2275, pp. 1-11.  DOI: 10.3390/nu12082275. Open Access
  • Tosh, S.M., Bordenave, N. (2020) 全谷物燕麦和大麦及其可溶性膳食纤维对促进心脏健康、改善血糖和调节肠道菌群作用的新进展 Nutrition reviews, 78, pp. 12-19. DOI: 10.1093/nutrit/nuaa050. Open Access
  • Wolever, T.M.S., Tosh, S.M., Spruill, S.E., Jenkins, A.L., Ezatagha, A., Duss, R., Johnson, J., Chu, Y., Steinert, R.E. (2020) Increasing oat β-glucan viscosity in a breakfast meal slows gastric emptying and reduces glycemic and insulinemic responses but has no effect on appetite, food intake, or plasma ghrelin and PYY responses in healthy humans: A randomized, placebo-controlled, crossover trial. American Journal of Clinical Nutrition, 111 (2), pp. 319-328. DOI: 10.1093/ajcn/nqz285. Open Access
  • Acquah, C., Dzuvor, C.K.O., Tosh, S., Agyei, D. (2020) Anti-diabetic effects of bioactive peptides: recent advances and clinical implications. Critical Reviews in Food Science and Nutrition, in press. DOI: 10.1080/10408398.2020.1851168.
  • Graf, D., Monk, J.M., Lepp, D., Wu, W., McGillis, L., Roberton, K., Brummer, Y., Tosh, S.M., Power, K.A. (2019) Cooked red lentils dose-dependently modulate the colonic microenvironment in healthy C57Bl,/6 male mice. Nutrients, 11 (8), art. no. 1853. DOI: 10.3390/nu11081853. Open Access
  • Kock, L.B., Brummer, Y., Exley, T., Rhymer, C., Storsley, J., Xie, K., Chu, Y., Ou, B., Ames, N.P., Tosh, S.M., Bordenave, N. (2018) In vitro assessment of oat β-glucans nutritional properties: An inter-laboratory methodology evaluation. Carbohydrate Polymers, 200, pp. 271-277. DOI: 10.1016/j.carbpol.2018.07.082.
  • Grundy, M.M.-L., Fardet, A., Tosh, S.M., Rich, G.T., Wilde, P.J. (2018) Processing of oat: The impact on oat's cholesterol lowering effect. Food and Function, 9 (3), pp. 1328-1343. DOI: 10.1039/c7fo02006f. Open Access
  • Wang, Y., Harding, S.V., Thandapilly, S.J., Tosh, S.M., Jones, P.J.H., Ames, N.P. (2017) Barley β-glucan reduces blood cholesterol levels via interrupting bile acid metabolism. British Journal of Nutrition, 118 (10), pp. 822-829. DOI: 10.1017/S0007114517002835. Open Access
  • Monk, J.M., Lepp, D., Wu, W., Graf, D., McGillis, L.H., Hussain, A., Carey, C., Robinson, L.E., Liu, R., Tsao, R., Brummer, Y., Tosh, S.M., Power, K.A. (2017) Chickpea-supplemented diet alters the gut microbiome and enhances gut barrier integrity in C57Bl/6 male mice. Journal of Functional Foods, 38, pp. 663-674. DOI: 10.1016/j.jff.2017.02.002.
  • Tosh, S.M. (2013). “Effects of oats on carbohydrate metabolism”. In Chu, Y.-F. (ed.) Oat Nutrition and Technology. Wiley Blackwell, UK. pp. 273 - 290.
  • Tosh, S.M. (2007). “Factors affecting bioactivity of cereal β-glucans”. In Salovaara, H., Gates, F., Tenkanene, M. (ed.) Dietary fibre components and functions. Wageningen Academic Publishers, NL. pp. 75 – 90.