Bach, Susan, Ph.D.

Chercheuse scientifique


Coordonnées :

4200 Highway 97
C.P. 5000
Summerland, (Colombie-Britannique) V0H 1Z0
Téléphone : 250-494-6398
Télécopieur : 250-494-0755
Courriel : susan.bach@agr.gc.ca

Domaines d'expertise :

  • Forme viable mais non cultivable des agents pathogènes humains
  • Salubrité des légumes-feuilles (laitue, épinard)
  • Biologie moléculaire et microbiologie
  • Effets du stress sur Escherichia coli producteur de vérotoxines (ECPV)
  • Produits horticoles
  • Salubrité des aliments
  • Agents pathogènes humains
  • Écologie des agents pathogènes humains dans les systèmes de production horticole
  • E. coli O157:H7 chez les bovins

Projets en cours :

  • Évaluation de la forme viable mais non cultivable (VNC) des agents pathogènes humains dans les produits horticoles et l’environnement
  • Méthodes moléculaires et microscopiques de détection des cellules VNC
  • Détermination des effets du stress sur le comportement de E. coli producteur de vérotoxines (ECPV)
  • Études sur le devenir des agents pathogènes d’origine alimentaire dans les systèmes de production horticole (légumes-feuilles)
  • Analyse microbienne comparative de composts organiques selon des paramètres d’irrigation, de gestion de la végétation dans les rangs, de disponibilité de l’azote et de santé des sols

Publications de recherche :

Les liens ci-dessous mènent aux résumés avec accès au texte intégral.

2015

2014

2013

2012

2011

2010

2009

Autres publications relatives à la science :

2015

  • Bach, S.J. et Delaquis, P.J. (2015). Multistate Research Project S-294. Postharvest Quality and Safety in Fresh-cut Vegetables and Fruits. 2014-2015 Activities Report. (Rapport)
  • Bach, S.J., Allen, K.J., Delaquis, P.J., et Chen, J. (2015). « Improving the decontamination of fresh produce. », China International Food Safety and Quality Conference (CIFSQ), Beijing, China, November 4-5, 2015, Invited oral presentation.
  • Bach, S.J., Delaquis, P.J., et Allen, K.J. (2015). Development of validated seed disinfection strategies for the organic production of sprouted vegetables. CL02-Organic-Activity 25v1. AAFC Project ID J-000621. (Rapport)
  • Bach, S.J., Delaquis, P.J., et Harlton, C.E. (2015). « Effect of cold stress on biofilm formation by Shiga toxin-producing Escherichia coli (STEC). », VTEC 2015, Boston, MA, USA, September 13-16, 2015.
  • Bach, S.J., Fan, L., Forney, C.F., et Delaquis, P.J. (2015). « Quality and Safety in Fresh-cut Vegetables and Fruits. United Fresh Produce Association Food Safety and Technology Council. », United Fresh 2015, Chicago, IL, USA, June 9-11, 2015, Oral presentation and handout information on AAFC’s research activities.
  • Bach, S.J., Harlton, C.E., et Wahlgren, S. (2015). « The impact of starvation, low temperature and chlorine on the viable but non culturable (VBNC) state of Escherichia coli O157:H7. », United Fresh 2015, Chicago, IL, USA, June 9-11, 2015.
  • Bach, S.J., Kostrzynska, M., Bezanson, G.S., et Delaquis, P.J. (2015). Stress-induced behaviors of non-O157 verotoxin-producing Escherichia coli (VTEC) in leafy greens. Research Project Annual Report. AAFC Project ID J-000128. (Rapport)
  • Bach, S.J., Marden, C., Harlton, C.E., Wahlgren, S., et Delaquis, P.J. (2015). « The response of Shiga toxin-producing Escherichia coli (STEC) to cold stress on plants and fresh-cut Romaine lettuce. », 2015 International Association of Food Protection (IAFP), Portland, Oregon, USA, July 25-28, 2015.
  • Bach, S.J., Marden, C., Harlton, C.E., et Wahlgren, S. (2015). « Survival of cold stressed non-O157 verotoxin-producing Escherichia coli (VTEC) on fresh-cut Romaine lettuce stored at 4 C. », United Fresh 2015, Chicago, IL, USA, June 9-11, 2015.
  • Chen, J., Nadya, S., Allen, K.J., Johnson, R.P., Ziebell, K.A., Zeibell, K., Bach, S.J., Topp, E., et Delaquis, P.J. (2015). « Phenotypic and genotypic characterization of antimicrobial resistance in Shiga toxin-producing Escherichia coli isolated from surface water in the Lower Mainland of British Columbia. », VTEC 2015, Boston, MA, USA, September 13-16, 2015.
  • Delaquis, P.J. et Bach, S.J. (2015). « Fate of Salmonella enterica, Escherichia coli O157:H7 and Listeria monocytogenes in mung bean, alfalfa and radish seed stored at three levels of relative humidity. », 2015 International Association of Food Protection (IAFP), Portland, Oregon, USA, July 25-28, 2015.
  • Delaquis, P.J., Bach, S.J., Bezanson, G.S., Topp, E., McKellar, R., Blais, B., et Peréz Rodriguez, F. (2015). Phenotypic diversity in Escherichia coli O157:H7 and its influence on survival in leafy vegetables. Research Project Annual Report. AAFC Project ID J-000132. (Rapport)
  • Delaquis, P.J., Nadya, S., Chen, J., Allen, K.J., Johnson, R.P., Ziebell, K.A., Bach, S.J., et Topp, E. (2015). « Prevalence, phenotypic and genotypic characteristics of Shiga toxin-producing Escherichia coli isolated from irrigation waters in a Canadian urban-agricultural landscape. », VTEC 2015, Boston, MA, USA, September 13-16, 2015.
  • McAllister, T.A., Aslam, M., Bach, S.J., Alexander, T.W., Stanich, K., et McGinn, S.M. (2015). Defining the contribution of super-shedders to high event days in commercial abattoirs and contamination of the environment with Escherichia coli O157:H7. Research Project Annual Report. AAFC Project ID J-000119. (Rapport)
  • Mei, G.-Y., Tang, J., Bach, S.J., et Kostrzynska, M. (2015). « Biofilm formation by verotoxin-producing Escherichia coli O157:H7 and O145:NM under oxidative stress. », OMAFRA Food Safety Research Forum, Guelph, ON, Canada, May 05, 2015.
  • Tang, J., Mei, G.-Y., Bach, S.J., et Kostrzynska, M. (2015). « Comparative stress and virulence gene expression analysis in biofilms and planktonic cells of verotoxin-producing Escherichia coli (VTEC) O103:H2 in response to oxidative stress. », OMAFRA Food Safety Research Forum, Guelph, ON, Canada, May 05, 2015.
  • Tang, J., Mei, G.-Y., Bach, S.J., et Kostrzynska, M. (2015). « The complexity of stress and virulence gene expression in logarithmic and stationary phase planktonic cells and biofilms of different ages of verotoxin-producing Escherichia coli (VTEC) O103:H2 in response to hydrogen peroxide. », 12th Annual Guelph Food Safety Symposium, Guelph, ON, Canada, October 21, 2015.

2014

  • Bach, S.J. et Delaquis, P.J. (2014). Multistate Research Project S-294. Postharvest Quality and Safety in Fresh-cut Vegetables and Fruits. 2013-2014 Activities Report. (Rapport)
  • Bach, S.J., Delaquis, P.J., et Harlton, C.E. (2014). « Stress and Virulence Gene Response of Non-O157 Shiga Toxin-producing Escherichia coli (STEC) Exposed to Low Temperature. », Annual Meeting of the International Association for Food Protection (IAFP), Indianapolis, USA, August 3-6, 2014, Oral presentation. (Résumé)
  • Bach, S.J., Kostrzynska, M., Bezanson, G.S., et Delaquis, P.J. (2014). Stress-induced behaviors of non-O157 verotoxin-producing Escherichia coli (VTEC) in leafy greens. Research Project Annual Report. AAFC Project ID J-000128. (Rapport)
  • Bach, S.J., Marden, C., Harlton, C.E., et Wahlgren, S. (2014). « The impact of low temperature on verotoxin-producing Escherichia coli (VTEC) on fresh-cut Romaine lettuce. », United Fresh 2014, Chicago, IL, USA, June 10-14, 2014. (Résumé)
  • Bach, S.J., Ries, C., Lau, D., et Wahlgren, S. (2014). « Growth phase of non-O157 verotoxin-producing Escherichia coli affects their resistance to cold stress. », United Fresh 2014, Chicago, IL, USA, June 10-14, 2014. (Résumé)
  • Bovo, F., de Cesare, A., Manfreda, G., Bach, S.J., et Delaquis, P.J. (2014). « Fate of Salmonella enterica in a mixed ingredient salad containing lettuce, cooked chicken and cheese. », Annual Meeting of the International Association for Food Protection (IAFP), Indianapolis, USA, August 3-6, 2014, Oral presentation. (Résumé)
  • Dawson, A., Ross, K.A., et Bach, S.J. (2014). « Antimicrobial activity of phenolic and crude polysaccharide compounds isolated from apples, cherries, and North American ginseng against foodborne pathogens. », United Fresh 2014, Chicago, IL, USA, June 10-14, 2014. (Résumé)
  • Delaquis, P.J., Bach, S.J., Bezanson, G.S., Topp, E., McKellar, R., Blais, B., et Peréz Rodriguez, F. (2014). Phenotypic diversity in Escherichia coli O157:H7 and its influence on survival in leafy vegetables. Research Project Annual Report. AAFC Project ID J-000132. (Rapport)
  • McAllister, T.A., Aslam, M., Bach, S.J., Alexander, T.W., Stanich, K., et McGinn, S.M. (2014). Defining the contribution of super-shedders to high event days in commercial abattoirs and contamination of the environment with Escherichia coli O157:H7. Research Project Annual Report. AAFC Project ID J-000119. (Rapport)
  • McKellar, R.C., Peréz Rodriguez, F., Harris, L.J., Moyne, A.-L., Blais, B., Topp, E., Bezanson, G.S., Bach, S.J., et Delaquis, P.J. (2014). « Evaluation of mathematical models to describe Escherichia coli O157:H7 decay on field-grown leafy vegetables. », Annual Meeting of the International Association for Food Protection (IAFP), Indianapolis, USA, August 3-6, 2014, Oral presentation. (Résumé)
  • Nadya, S., Allen, K.J., Johnson, R.P., Ziebell, K.A., Topp, E., Delaquis, P.J., et Bach, S.J. (2014). « A comparison of the presence of total Escherichia coli and Shiga-toxigenic E. coli in irrigation waters from an intensive agricultural region. », United Fresh 2014, Chicago, IL, USA, June 10-14, 2014, Abstract. (Affiche)
  • Nadya, S., Allen, K.J., Ziegler, K., Johnson, R., Bach, S.J., et Delaquis, P.J. (2014). « Prevalence of Shiga Toxin-producing Escherichia coli in Irrigation Waters and Fresh Produce in British Columbia, Canada. », Annual Meeting of the International Association for Food Protection (IAFP), Indianapolis, USA, August 3-6, 2014, Oral presentation. (Résumé)
  • Ross, K.A., Brown, D.M., Siow, Y.L., Arcand, Y., et Bach, S.J. (2014). Identification, characterization and proof of bioactivity of polysaccharide and polysaccharide conjugates in apples, cherries and North American ginseng. Research Project Final Report. AAFC RBPI #2668. (Rapport)
  • Tang, J., Mei, G.-Y., Bach, S.J., et Kostrzynska, M. (2014). « Biofilm formation by verotoxin-producing Escherichia coli (VTEC) O157:H7 and non-O157 strains on polypropylene and glass surfaces. », 11th Annual Guelph Food Safety Seminar (GFSS) Symposium, Guelph, ON, Canada, October 22, 2014.
  • Wang, Q., Kostrzynska, M., Gong, J., Balamurugan, S., Miller, S., Cui, S.W., et Bach, S.J. (2014). Investigation of the use of bacteriophages in combination with probiotics for the control of Salmonella infection in food-producing animals. Research Project Annual Report. AAFC Project ID J-000234. (Rapport)

2013

  • Bach, S.J. (2013). SAES-422 Multistate Research Activity Accomplishments Report 2013. S294 Quality and Safety of Fresh-cut Vegetables and Fruits. (Rapport)
  • Bach, S.J., Bezanson, G.S., Delaquis, P.J., et Kostrzynska, M. (2013). The influence of stress on survival and infectivity of Verotoxin-producing Escherichia coli (VTEC) in ready-to-eat foods. Research Project FINAL Report AAFC RBPI #1848. (Rapport)
  • Bach, S.J., Delaquis, P.J., Toivonen, P.M.A., et Lu, C. (2013). « Impact of hydrogen peroxide on Escherichia coli O157:H7 in vitro and in vivo on fresh-cut lettuce. », United Fresh 2013, San Diego Convention Center, San Diego, CA, USA, May 14-16, 2013, Abstract. (Affiche)
  • Bach, S.J., Delaquis, P.J., Toivonen, P.M.A., et Lu, C. (2013). « The effect of hypoxic treatment of Romaine lettuce on the survival of Escherichia coli O157:H7. », United Fresh 2013, San Diego Convention Center, San Diego, CA, USA, May 14-16, 2013, Abstract. (Affiche)
  • Bach, S.J., Guévremont, É., Bezanson, G.S., Brassard, H., Delaquis, P.J., Ells, T.C., Hodges, D.M., Toivonen, P.M.A., et Kostrzynska, M. (2013). Enhancing mitigation strategies for microbiological risks in fresh horticultural products. Research Project FINAL Report AAFC RBPI #1489. (Rapport)
  • Bach, S.J., Lu, C., Delaquis, P.J., et Toivonen, P.M.A. (2013). « Impact of wound induced hydrogen peroxide production on Escherichia coli O157:H7 in fresh-cut lettuce. », 5th Congress of European Microbiologists (FEMS 2013), Leipzig, Germany, July 21-25, 2013, Presentation. (Affiche)
  • Bach, S.J., Toivonen, P.M.A., Lu, C., et Delaquis, P.J. (2013). Multistate Research Project S-294. Postharvest Quality and Safety in Fresh-cut Vegetables and Fruits. 2012-2013 Activities Report. (Rapport)
  • Delaquis, P.J., Bach, S.J., Lu, C., et Toivonen, P.M.A. (2013). « Effect of environmental factors (field versus controlled environment chamber) on the survival of Escherichia coli O157:H7 on Romaine lettuce. », United Fresh 2013, San Diego Convention Center, San Diego, CA, USA, May 14-16, 2013, Abstract. (Affiche)
  • Delaquis, P.J., Bach, S.J., McKellar, R., Bezanson, G.S., et Topp, E. (2013). « Survival of six Shiga-toxigenic Escherichia coli serotypes in field lettuce. », 58th Annual Meeting of the International Association of Food Protection (IAFP 2013), Charlotte Convention Center, Charlotte, NC, USA, July 28-31, 2013. (Affiche)
  • Fung, S., Rempel, H., Block, G.S., Chen, W., Janzen, T., Lewis, C.T., Zhang, N., El-Kayssi, N., Bilkhu, S., Hambleton, S., Amoako, K.K., Lévesque, C.A., Bach, S.J., Delaquis, P.J., et Diarra, M.S. (2013). « Bacillus species across Canada's agriculture environment: an ecological perspective. », International conference on Bacillus antracis, B. cereus, and B. thurengiensis, Victoria, BC, Canada, September 1-5, 2013, Abstract. (Affiche)
  • Mei, G.-Y., Tang, J., Bach, S.J., et Kostrzynska, M. (2013). « Viability and gene expression of verotoxin-producing Escherichia coli (VTEC) O111:NM abd O26:H11 under oxidative stress on Romaine lettuce. », 10th Annual GFSS Symposium, Food Safety: Compliance to Commitment, Guelph, ON, Canada, October 23, 2013.
  • Mei, G.-Y., Tang, J., Carey, C.M., Bach, S.J., et Kostrzynska, M. (2013). « Behaviour of verotoxin-producing Escherichia coli on lettuce treated with H2O2. », Food Safety Research Forum, Guelph, ON, Canada, May 9, 2013.
  • Ross, K.A., Brown, D.M., Siow, Y.L., Arcand, Y., et Bach, S.J. (2013). Identification, characterization and proof of bioactivity of polysaccharide and polysaccharide conjugates in apples, cherries and North American ginseng. Research Project Annual Report. AAFC RBPI #2668. (Rapport)
  • Toivonen, P.M.A., Lu, C., Bach, S.J., et Delaquis, P.J. (2013). « Hypoxic atmospheres can induce subsequent increases in cutting‐induced hydrogen peroxide production by fresh‐cut Romaine lettuce. », 11th International Controlled and Modified Atmosphere Research Conference, Trani, Italy, June 3-7, 2013. (Affiche)
  • Toivonen, P.M.A., Lu, C., Bach, S.J., et Delaquis, P.J. (2013). « Hypoxic treatment can enhance cut-edge hydrogen peroxide production in Romaine lettuce. », United Fresh 2013, San Diego Convention Center, San Diego, CA, USA, May 14-16, 2013, Abstract. (Affiche)
  • Topp, E., Lanthier, M., Diarra, M.S., Delaquis, P.J., Bach, S.J., McAllister, T.A., Sharma, R., Inglis, G.D., Masse, D., Bezanson, G.S., Bittman, S., Talbot, G., Masse, L., Brassard, J., Houde, A., Jones, T.H., Lapen, D.R., van Bochove, É., Gannon, V.P.J., Pintar, K.D.M., Masson, L., Neumann, N.F., et Koning, W. (2013). Assessment and management of on-farm fate of microbial and chemical contaminants carried in human and animal wastes used as organic fertilizers. Final Report SAGES #1462. (Rapport)
  • Yang, X., Gill, C.O., et Bach, S.J. (2013). Detection and enumeration by real-time PCR of food borne pathogens Salmonella, Verotoxigenic Escherichia coli and Listeria monocytogenes that survive decontaminating treatments. Research Project Final Report. AAFC RBPI #2509. (Rapport)
  • Yang, X.Q., Bach, S.J., et Gill, C.O. (2013). Detection and enumeration by real-time PCR of food borne pathogens Salmonella, Verotoxigenic Escherichia coli and Listeria monocytogenes that survive decontaminating treatments. Research Project Annual Report. AAFC RBPI #2509. (Rapport)

2012

  • Delaquis, P.J. et Bach, S.J. (2012). « Resistance and sub-lethal damage. », dans Gómez-López, V.M. (dir.) - Decontamination of Fresh and Minimally Processed Produce, Wiley - Blackwell, Chapitre 4, p. 77-86.
  • Diarra, M.S., Rempel, H., Bach, S.J., Harlton, C.E., Delaquis, P.J., Pritchard, J., Aslam, M.N., Leslie, M., et Topp, E. (2012). « Distribution of antibiotic resistance phenotypes and genotypes among Salmonella spp. Isolated from broiler chickens in British Columbia. », 101st Annual Meeting of the International Association of Food Protection (IAFP 2012), Rhode Island Convention Center, Providence, RI, USA, July 22-25, 2012, Poster ID# 2398. (Affiche)

2011

  • Bach, S.J., Lu, C., Delaquis, P.J., et Toivonen, P.M.A. (2011). « Cutting Romaine lettuce while submerged in sanitizer improves efficacy of sodium hypochlorite. », The Grower, 61(5), p. 20.
  • Toivonen, P.M.A., Lu, C., Delaquis, P.J., et Bach, S.J. (2011). « Timing of sanitizer application reduces microbial counts on fresh-cut Romaine lettuce. », 2nd ISHS International Conference on Quality Management of Fresh Cut Produce: Convenience Food for a Tasteful Life, Università degli Studi di Torino, Torino, Italy, July 17-21, 2011.

2010

  • Bach, S.J., Leblanc, D., et Lin, P. (2010). « The influence of chlorine and low temperature on the induction of the viable but non-culturable state in Escherichia coli 0157:H7. », 2010 Canadian Institute of Food Science & Technology (CIFST) and AAFC Conference, Fairmont Winnipeg Hotel, Winnipeg, MB, Canada, May 30-June 1, 2010, # 02-2. (Résumé)
  • Toivonen, P.M.A., Lu, C., Delaquis, P.J., et Bach, S.J. (2010). « Evaluation of timing for application of sanitizing washes to reduce microbial counts on Romaine lettuce. », 14th Annual Federal Food Safety and Nutrition Research Meeting (FFSNRM), Ottawa, ON, Canada, November 3-4, 2010, p. 28.

2009

  • Bach, S.J. (2009). « On-farm Food Safety and Water Quality: Just What Does a Test Result Mean? », 51st Annual Horticulture Growers' Short Course, Tradex, Abbotsford Airport, Abbotsford, BC, Canada, February 14-16, 2009.
  • Bach, S.J. et Delaquis, P.J. (2009). « The origin and spread of human pathogens in fruit production systems. », dans Fan, X, Miemira, B., Doona, C., Feeherry, F., and Gravani, B. (dir.) - Microbial Safety of Fresh Produce: Challenges, Perspectives and Strategies, Wiley - Blackwell, Chapitre 2, p. 43-54.
  • Delaquis, P.J., Bach, S.J., LeBlanc, D.I., Brassard, J., Houde, A., Villeneuve, S., Bezanson, G.S., Diarra, M.S., Topp, E., Blais, B., Gajadhar, A., Bisaillon, J.-R., Fazil, A.M., Gilmour, M., Mattison, K., et Bidawid, S. (2009). « A systems-based approach for the assessment of microbiological threats to the food supply. », 13th Annual Federal Food Safety and Nutrition Research Meeting (FFSNRM), Ottawa, ON, Canada, November 4-5, 2009. (Présentation)
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