University of Minnesota
Department of Food Science and Nutrition

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  Daniel J. O'Sullivan, Ph.D Photo of Daniel O'Sullivan
 

Professor
Department of Food Science and Nutrition
Address: 262 FScN
Phone: (612) 624-5335
Fax: (612) 625-5272
dosulliv@umn.edu

  Research Expertise:
 
  • Microbiology
  • Food biotechnology
  • Bacteriophage
  • Gene regulation in Lactococcus
  • Probiotic cultures
  • Antimicrobial compounds
  • Bifidobacteria genomics
  Resident and Outreach Teaching
 
  • FScN 1021 Introductory Microbiology
  • FScN 5411 Food Biotechnology
  Selected Scholarship
 

Lee, J-H., Halgerson, J.S. , Kim, J-H., and O’Sullivan, D.J. 2007. Comparative sequence analysis of plasmids from Lactobacillus delbrueckii and construction of a shuttle cloning vector. Appl. Environ. Microbiol. 73:4417-4424.

O’Sullivan, D.J. 2007. Techniques for microbial species identification and characterization to identify commercially important traits. In B. C. Weimer (ed.), Improving the Flavor of Cheese, CRC Press, Woodhead Publishing Limited, Cambridge, England pp. 199-218.

Lee, J-H. and O’Sullivan, D.J. 2007. Evolutionary adaptation responses in bifidobacteria: Comparative and functional genomics. Proceedings of the 2nd International Symposium on Propionibacteria and Bifidobacteria: Dairy and Probiotic Applications, Wadahl, Norway.

Lee, J-H. 2007. Comparative and functional genomic analysis of Bifidobacterium longum. Ph.D. Thesis. University of Minnesota. pp. 258.

Phister, T.G., O’Sullivan, D.J. and McKay, L.L. 2004. Identification of bacilysin, chlorotetaine, and iturin A produced by Bacillus sp strain CS93 isolated from pozol, a Mexican fermented maize dough. Appl. Environ. Microbiol. 70:631-634.

O’Sullivan, D.J. 2004. Genomic approaches for functional food cultures. p. 19 - 27. In Troy, D., Beresford, T., Cashman, K., Fanning, S., O’Brien, L., McDonagh, C., Timon, D., Smith, T., (Eds.) Thinking Beyond Tomorrow: A Safe and Nutritious Food Chain for the Consumer. Teagasc Publications, Dublin.

Chandrapati, S., and D. J. O’Sullivan. (2002) ‘Characterization of the promoter regions involved in galactose and nisin mediated induction of the nisA gene in Lactococcus lactis ATCC 11454’. Mol. Microbiol. 46:467-477.

Klaenhammer, T, E. Altermann, F. Arigoni, A. Bolotin, F. Breidt, J. Broadbent, R. Cano, S. Chaillou, J. Deutscher, M. Gasson, M. van de Guchte, J. Guzzo, T. Hawkins, P. Hols, R. Hutkins, M. Kleerebezem, J. Kok, O. Kuipers, M. Lubbers, E. Maguin, L. McKay, D. Mills, A. Nauta, R. Overbeek, H. Pel, D. Pridmore, M. Saier, D. van Sinderen, A. Sorokin, J. Steele, D. O’Sullivan, W. de Vos, B. Weimer, M. Zagorec, and R. Siezen. (2002) ‘Discovering lactic acid bacteria by genomics’. Antonie van Leeuwenhoek 82:29 – 58.

Li, H., and D. J. O’Sullivan. (2002) ‘Heterologous expression of nisin in a dairy Enterococcus strain’. Appl. Environ. Microbiol. 68:3392-3400.

O’Sullivan, D. J. (2001) ‘Screening of intestinal microflora for effective probiotic bacteria’. J. Ag. Food Chem. 49:1751-1760.

Swearingen, P. A., D. J. O’Sullivan, and J. J. Warthesen. (2001) ‘Isolation, characterization and influence of native nonstarter lactic acid bacteria in Cheddar cheese quality’. J. Dairy Sci. 84:50-59.

O’Sullivan, D. J. (2000) ‘Methods for analysis of the intestinal microflora’. Curr. Issues Intest. Microbiol. 1:39-50

Wang, H., K. A. Baldwin, D. J. O’Sullivan, and L. L. McKay. (2000) ‘Identification of a gene cluster encoding Krebs cycle oxidative enzymes linked to the pyruvate carboxylase gene in Lactococcus lactis ssp lactis C2’. J. Dairy Sci. 83:1912-1918

Ray, P., C. Sanchez, D. J. O’Sullivan, and L. L. McKay. (2000) ‘Classification of a bacterial isolate, from pozol, exhibiting antimicrobial activity against several Gram-positive and Gram-negative bacteria, yeasts and molds’. J. Food Protect. 63:1123-1132

Yang, J., and D. J. O’Sullivan. (2006) ‘Involvement of the LlaKR2I Methylase in the Expression of the AbiR Bacteriophage Defense System in Lactococcus lactis ssp. lactis biovar diacetylactis KR2’. J. Bacteriol. 188:1920-1928

Lee, J-H., and D. J. O’Sullivan. (2006). ‘Sequence Analysis of Two Cryptic Plasmids from Bifidobacterium longum DJO10A and Construction of a Shuttle Cloning Vector’. Appl. Environ. Microbiol. 72:527-535

Chandrapati, S., and D. J. O’Sullivan. (2002) ‘Characterization of the promoter regions involved in galactose and nisin mediated induction of the nisA gene in Lactococcus lactis ATCC 11454’. Mol. Microbiol. 46:467-477.

Li, H., and D. J. O’Sullivan. (2002) ‘Heterologous expression of nisin in a dairy Enterococcus strain’. Appl. Environ. Microbiol. 68:3392-3400.

O’Sullivan, D. J. (2001) ‘Screening of intestinal microflora for effective probiotic bacteria’. J. Ag. Food Chem. 49:1751-1760.

Twomey, D. P., P. J. De Urraza, L. L. McKay, and D. J. O’Sullivan. (2000) ‘Characterization of AbiR, a novel multi-component abortive infection mechanism encoded by plasmid pKR223 of Lactococcus lactis ssp. lactis KR2’. Appl. Environ. Microbiol. 66:2647-2651

Cusick, S. M., and D. J. O’Sullivan. (2000) ‘Use of a single, triplicate arbitrary primed (TAP)-PCR procedure for molecular fingerprinting lactic acid bacteria’. Appl. Environ. Microbiol. 66:2227-2231

Ibrahim, S. A., and D. J. O’Sullivan. (2000) ‘Use of chemical mutagenesis for the isolation of food grade b-galactosidase overproducing mutants of bifidobacteria, lactobacilli and Streptococcus salivarius ssp. thermophilus’. J. Dairy Sci. 83:923-930

Chandrapati, S., and D. J. O’Sullivan. (1999) ‘Nisin independent induction of the nisA promoter in Lactococcus lactis during growth in lactose or galactose’. FEMS Microbiol. Letts. 170:191-198

Twomey, D. P., L. L. McKay, and D. J. O’Sullivan. (1998) ‘Molecular characterization of the Lactococcus lactis LlaKR2I restriction-modification system and effect of an IS982 element positioned between the restriction and modification genes’. J. Bacteriol. 180:5844-5854

  Leadership and Service:
  Director of Graduate Studies in Food Science
  Awards: