Networks
Boor, Kathryn Jean
Ronald P. Lynch Dean of Agriculture and Life Sciences
Positions
- Professor, Food Science (FOOD), College of Agriculture and Life Sciences (CALS)
- Dean, College of Agriculture and Life Sciences (CALS), Cornell University
- Academic Dean, Office of the Provost
Kathryn J. Boor is Ronald P. Lynch Dean of Agriculture and Life Sciences at Cornell University. Dr. Boor served as Professor and Chair of the Department of Food Science at Cornell University (2007-2010). Dr. Boor earned a BS in Food Science from Cornell University and an MS in Food Science from the University of Wisconsin. She conducted research for two years in Kenya, East Africa, as a member of a multi-disciplinary team working with small-scale farmers to enhance sustainable and safe goat milk production and preservation systems, then earned her PhD in Microbiology in 1994 at the University of California, Davis. She established the Food Safety Laboratory as an Assistant Professor in the Department of Food Science at Cornell University in 1994. Presently, research in her laboratory is funded by the National Institutes of Health, the United States Department of Agriculture and the New York State Milk Promotion Advisory Board. Dr. Boor serves on the editorial boards for Applied and Environmental Microbiology and Foodborne Pathogens and Disease. She is scientific advisor for the New York State Cheese ManufacturersÕ Association and past president of the New York State Association for Food Protection. She served on the National Academy of Science/Institute of Medicine Committee on Review of the Use of Scientific Criteria and Performance Standards for Safe Food (December 2001- May 2003) and the National Advisory Committee on Microbiological Criteria for Foods. She received the 2000 USDA Honor Award as a member of the Listeria Outbreak Working Group, the 2000 Foundation Scholar Award and the 2006 DeLaval Award for Dairy Extension programming, both from the American Dairy Science Association, and the 2002 Samuel Cate Prescott award for outstanding research from the Institute of Food Technologists. Dr. Boor is a Fellow of the American Academy of Microbiology, the International Academy of Food Science and Technology and the Institute of Food Technologists.
Research Areas
- bioinformatics
- dairy science
- food science
- microbiology
- milk
- molecular biology
- molecular genetics
- new life sciences
- pathogens
Websites
- Kathryn Boor's research program
- Kathryn Boor's Milk Quality Improvement Program
- Comprehensive scientific information on milk and dairy foods
- Website for the New York State Cheese Manufacturers' Association, which is administered through Boor's extension program
- Website for the New York State Association for Food Protection, which is administered through Boor's extension program
- Affiliations
- Research
- Publications
- Teaching
- Service
- Background
- Other
- View All
Affiliations
member of graduate field
other Cornell affiliations
member of
- David R. Atkinson Center for a Sustainable Future (ACSF) Faculty Fellow
Research
research overview
- The increasingly competitive nature of the food and beverage market highlights the need for improvement of dairy product quality, variety, and availability to ensure the economic vitality of the dairy industry. To work toward meeting these challenges, I have established an integrated research and extension program in dairy microbiology quality and safety which is dedicated to improving dairy product shelf-life, wholesomeness and safety through reduction of spoilage and pathogenic bacteria in processed products and in raw milk. The long-term objective of this program is the creation of an integrated and interactive University/regulatory agency/dairy industry network to protect dairy product safety and quality. The specific foci of my research program are to identify and characterize factors that affect the presence and persistence of spoilage and pathogenic organisms in food products intended for human consumption. My strategies integrate the tools of molecular biology and phenotypic microbiology to: (i) explore factors linking the ability of bacteria to survive under various conditions, including in foods and in food processing environments, with bacterial ability to cause human and animal disease; and (ii) rapidly identify and track spoilage and pathogenic bacteria in food systems. My program targets the long-term food quality and safety needs of the food and dairy processing industries and facilitates rapid translation and communication of research results to these industries. The major impacts from these programs will be (i) continued discovery and application of new information for production of high quality, wholesome dairy and food products; (ii) an improved understanding of the cellular mechanisms contributing to bacterial survival under widely varying environmental conditions; and (iii) training of highly qualified students for employment in dairy- and food-related sectors of industry, government, and academia.
research activities
- Dairy Food Extension Program supports the New York dairy processing industry
- Paenibacillus and Bacillus limit shelf-life for fluid milk products
- Preliminary incubation (PI) test commonly applied to raw milk is not an appropriate test for predicting fluid milk shelf life
- The Milk Quality Improvement Program (MQIP): Providing support and adding value to the New York dairy industry
principal investigator on
- MECHANISM OF SYNERGISTIC COMBINATIONS OF GROWTH INHIBITORS FOR LISTERIA MONOCYTOGENES ON RTE SEAFOODS awarded by NATIONAL INSTITUTE OF FOOD AND AGRICULTURE-USDA 2010 - 2013
- MILK QUALITY IMPROVEMENT RESEARCH awarded by NYS DEPT OF AG & MARKETS 2008 - 2013
- REGULATORY NETWORKS CONTRIBUTING TO L. MONOCYTOGENES TRANSMISSION AND VIRULENCE awarded by NATL INST OF ALLERGY & INFECTIOUS DISEASE NIH 2002 - 2013
co-principal investigator on
area(s) of concentration/expertise
keywords
- alternative sigma factors
- bacterial RNA polymerase
- bacterial pathogenesis
- dairy microbiology
- food processing microbiology
- food safety
- foodborne pathogens
- product shelf life extension
- regulation of bacterial transcription
submitted impact statement
Publications
individual publications
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academic article
- A decade of improvement: New York State fluid milk quality.. Journal of Dairy Science. 95:7384-7390. 2012
- Effect of curing method and freeze-thawing on subsequent growth of Listeria monocytogenes on cold-smoked salmon.. Journal of Food Protection. 75:1619-1626. 2012
- Evaluation of various selective media for the detection of Pseudomonas species in pasteurized milk.. Journal of Dairy Science. 95:1568-1574. 2012
- Exploration of the role of the non-coding RNA SbrE in L. monocytogenes stress response.. International Journal of Molecular Sciences. 14:378-393. 2012
- Identification and characterization of psychrotolerant sporeformers associated with fluid milk production and processing.. Applied Environmental Microbiology. 78:1853-1864. 2012
- Listeria monocytogenes grown at 7°C shows Reduced Acid Survival and an Altered Transcriptional Response to Acid Shock Compared to L. monocytogenes grown at 37°C.. Applied Environmental Microbiology. 78:3824-3836. 2012
- Listeria monocytogenes shows temperature dependent and independent responses to salt stress, including responses that induce cross-protection to other stresses.. Applied Environmental Microbiology. 78:2602-2612. 2012
- Real-Time PCR Detection of Paenibacillus spp. in Raw Milk to Predict Shelf-Life Performance of Pasteurized Fluid Milk Products.. Applied Environmental Microbiology. 78:5855-5863. 2012
- Reduction of pasteurization temperature leads to lower bacterial outgrowth in pasteurized fluid milk during refrigerated storage: A case study.. Journal of Dairy Science. 95:471-475. 2012
- Stress-induced transcription of σB- and CtsR-regulated genes in persistent and non-persistent Listeria monocytogenes strains from food processing plants.. Foodborne Pathogens and Disease. 9:198-206. 2012
- A small RNA controls expression of the chitinase ChiA in Listeria monocytogenes. PLoS One. 6. 2011
- Results from raw milk Microbiological tests do not predict the shelf-life performance of commercially pasteurized fluid milk. Journal of Dairy Science. 94:1211-1222. 2011
- When cheese gets the blues: Pseudomonas fluorescens as the causative agent of cheese spoilage.. Journal of Dairy Science. 94:3176-3183. 2011
- Biofilm in milking equipment on a dairy farm as a potential source of bulk tank milk contamination with Listeria monocytogenes. Journal of Dairy Science. 93:2792-2802. 2010
- Growth temperature-dependent contributions of response regulators, sigma B, PrfA, and motility factors to Listeria monocytogenes invasion of Caco-2 cells. Foodborne Pathogens and Disease. 7:1337-1349. 2010
- Listeria monocytogenes sigma B has a small core regulon and a conserved role in virulence but makes differential contributions to stress tolerance across a diverse collection of strains. Applied and Environmental Microbiology. 76:4216-4232. 2010
- Salt stress phenotypes in Listeria monocytogenes vary by genetic lineage and temperature. Foodborne Pathogens and Disease. 7:1537-1549. 2010
- Tracking and eliminating sporeformers in dairy systems. Australian Journal of Dairy Technology. 65:74-80. 2010
- Transcriptomic and phenotypic analyses identify coregulated, overlapping regulons among PrfA, CtsR, HrcA and the alternative sigma factors σB, σC, σH, and σL in Listeria monocytogenes. Applied and Environmental Microbiology. 77:187-200. 2010
- Bacterial populations in complementary foods and drinking-water in households with children aged 10-15 months in Zanzibar, Tanzania. . Journal of Health, Population and Nutrition. 27:41-52. 2009
- Deep RNA sequencing of L. monocytogenes reveals overlapping and extensive stationary phase and sigma B-dependent transcriptomes, including multiple highly transcribed noncoding RNAs. BMC Genomics. 10:641. 2009
- Food safety hazards associated with consumption of raw milk.. Foodborne Pathogens and Disease. 6:793-806. 2009
- High temperature, short time pasteurization temperatures inversely affect bacterial numbers during refrigerated storage of pasteurized fluid milk.. Journal of Dairy Science. 92:4823-4832. 2009
- Listeria monocytogenes sigma B modulates PrfA-mediated virulence factor expression. Infection and Immunity. 7. 2009
- Molecular ecology of Listeria monocytogenes on a dairy farm: evidence for a reservoir in milking equipment. . Applied Environmental Microbiology. 75:1315-1323. 2009
- Short communication: N-alpha-Lauroyl-L-arginine ethyl ester monohydrochloride (LAE) reduces bacterial growth in pasteurized milk.. Journal of Dairy Science. 92. 2009
- Short communication: bacterial ecology of high-temperature, short-time pasteurized milk processed in the United States. . Journal of Dairy Science. 92:2009-2181. 2009
- Sigma B and sigma L contribute to L. monocytogenes 10403S response to the antimicrobial peptides SdpC and nisin. Foodborne Pathogens and Disease. 6:1057-1065. 2009
- Comparative analysis of the σB-dependent stress responses in Listeria monocytogenes and Listeria innocua strains exposed to selected stress conditions. Applied and Environmental Microbiology. 74:158-171. 2008
- Contributions of two-component regulatory systems, alternative sigma factors, and negative regulators to L. monocytogenes growth at low temperature. Journal of Food Protection. 71:420-425. 2008
- Differential regulation of Listeria monocytogenes internalin and internalin-like genes by σB and PrfA as revealed by subgenomic microarray analyses. Foodborne Pathogens and Disease. 5:417-435. 2008
- Growth and persistence of Listeria monocytogenes isolates on the plant model Arabidopsis thaliana. Food Microbiology. 25:698-704. 2008
- Identification of components of the sigma B regulon in Listeria monocytogenes that contribute to acid and salt tolerance. Applied and Environmental Microbiology. 74:6848-6858. 2008
- Modulation of stress and virulence in Listeria monocytogenes. Trends in Microbiology. 16:388-396. 2008
- Proteomic analyses of a Listeria monocytogenes mutant lacking sigma B identify new components of the sigma B regulon and highlight a role for sigma B in the utilization of glycerol. Applied and Environmental Microbiology. 74:594-604. 2008
- Raw milk consumption beliefs and practices among New York State dairy producers. . Food Protection Trends. 28:184-191. 2008
- SigmaB and PrfA-dependent transcription of genes previously classified as putative constituents of the Listeria monocytogenes PrfA regulon. Foodborne Pathogens and Disease. 5:281-293. 2008
- Tracking heat-resistant, cold-thriving fluid milk spoilage bacteria from farm to packaged product. . Journal of Dairy Science. 91:1218-1228. 2008
- Distribution of Internalin Gene Profiles of Listeria monocytogenes Isolates from Different Sources Associated with Phylogenetic Lineages. Foodborne Pathogens and Disease. 4:222-232. 2007
- Evaluation of a tissue culture-based approach for differentiating between virulent and avirulent Vibrio parahaemolyticus strains based on cytotoxicity. Journal of Food Protection. 70:348-354. 2007
- Microarray-based Characterization of the Listeria monocytogenes Cold Regulon in Log- and Stationary-Phase Cells. Applied and Environmental Microbiology. 73:6484-6498. 2007
- Molecular subtyping and characterization of psychrotolerant endospore-forming bacteria in two NY State fluid milk processing systems. Journal of Foor Protection. 70:2354-2364. 2007
- Phenotypic and transcriptomic analyses demonstrate interactions between the transcriptional regulators CtsR and Sigma B in Listeria monocytogenes. Applied and Environmental Microbiology. 73:7967-7980. 2007
- Sigma B-dependent and -independent mechanisms contribute to transcription of Listeria monocytogenes cold stress genes during cold shock and cold growth. Applied Environmental Microbiology. 73:6019-6029. 2007
- Temperature-dependent expression of Listeria monocytogenes internalin and internalin-like genes suggests functional diversity for these proteins among the listeriae. Applied Environmental Microbiology. 73:2806-2814. 2007
- The alternative sigma factor σB and the virulence gene regulator PrfA both regulate transcription of Listeria monocytogenes internalins. Applied Environmental Microbiology. 73:2919-1930. 2007
- Tracking spore-forming bacterial contaminants in fluid milk processing systems. Journal of Dairy Science. 90::4872-4883. 2007
- Transcriptomic and phenotypic analyses suggest a network between the transcriptional regulators HrcA and Sigma B in Listeria monocytogenes. Applied and Environmental Microbiology. 73:7981-7991. 2007
- Contributions of Listeria monocytogenes sigma(B) and PrfA to expression of virulence and stress response genes during extra- and intracellular growth. Microbiology. 152:1827-1838. 2006
- How the bacterial pathogen Listeria monocytogenes mediates the switch from environmental Dr. Jekyll to pathogenic Mr. Hyde. Infection and Immunity. 74:2505-2512. 2006
- Development of molecular typing methods for Bacillus spp. and Paenibacillus spp. isolated from fluid milk products 2006
- Bacterial stress responses: What doesn’t kill them can make them stronger. PLoS Biol. 4. 2006
- Contributions of Listeria monocytogenes σB and PrfA to expression of virulence and stress response genes during extra- and intracellular growth. Microbiol. 152:1827-1838. 2006
- Development of molecular typing methods for Bacillus spp. and Paenibacillus spp. isolated from fluid milk products. Journal of Food Science. 71. 2006
- Exposure to salt and organic acids increases the ability of Listeria monocytogenes to invade Caco-2 cells but decreases its ability to survive gastric stress. Applied Environmental Microbiology. 72:5384-5395. 2006
- How the bacterial pathogen Listeria monocytogenes mediates the switch from environmental Dr. Jekyll to pathogenic Mr. Hyde. Infect. Immun. 74:2505-2512. 2006
- New York State Cottage Cheese Shelf-life Characteristics: A sixteen-year perspective. Food Protection Trends. 26:158-164. 2006
- Sigma B contributes to Listeria monocytogenes gastrointestinal infection but not to systemic spread in the guinea pig infection model. Infect. Immun. 74:876-886. 2006
- SigmaB activation under environmental and energy stress conditions in Listeria monocytogenes. Applied Environmental Microbiology. 72:5197-5203. 2006
- Vibrio parahaemolyticus growth under low iron conditions and survival under high magnesium conditions. Journal of Food Protection. 69:1040-1045. 2006
- Alternative sigma factor sigmaB is not essential for listeria monocytogenes surface attachment. Journal of Food Protection. 68:311-317. 2005
- Alternative sigma factor sigmaB is not essential for Listeria monocytogenes surface attachment. Journal of Food Protection. 68:311-317. 2005
- Alternative sigma factors and their roles in bacterial virulence. MMBR. 69:527-543. 2005
- DNA sequence-based subtyping and evolutionary analysis of selected Salmonella enterica serotypes. Journal of Clinical Microbiology. 43:3688-3698. 2005
- Effects of acid stress on Vibrio parahaemolyticus survival and cytotoxicity. Journal of Food Protection. 67:1328-1334. 2005
- Molecular subtyping and characterization of bovine and human Streptococcus agalactiae isolates. Journal of Clinical Microbiology. 43:1177-1186. 2005
- Origin of the 60-day minimum holding period requirement for US cheeses made from sub- or unpasteurized milk. Food Protect. Trends. 25:767-770. 2005
- Ribotyping of Streptococcus uberis from a dairy's environment, bovine feces and milk. Vet. Microbiol. 109:257-265. 2005
- Serotype distributions and antimicrobial resistances of Streptococcus agalactiae isolates from bovine and human hosts. Journal of Clinical Microbiology. 43:5899-5906. 2005
- Shelf-lives of pasteurized fluid milk products in NY State: A ten-year study. Food Protection Trends. 25:102-113. 2005
- SigmaB contributes to Listeria monocytogenes invasion by controlling expression of inlA and inlB. Microbiol. 151:3215-3222. 2005
- The Listeria monocytogenes prfAP2 promoter is regulated by sigma B in a growth phase dependent manner. FEMS Microbiol. Lett. 245:329-336. 2005
- Characterization of pasteurized fluid milk shelf-life attributes. Journal of Food Science. 69:M207-M214. 2004
- Characterization of pasteurized fluid milk shelf life attributes. Journal of Food Science. 69. 2004
- Comparative genomic analysis of the sigB operon. Current Opinion in Microbiology. 48:39-46. 2004
- Detection of viable Mycobacterium avium subsp. paratuberculosis using luciferase reporter systems. Foodborne Pathogens and Disease. 1:258-266. 2004
- Epidemiology, pathogenesis, and prevention of foodborne Vibrio parahaemolyticus infections. Foodborne Pathogens and Disease. 1:74-88. 2004
- Listeria monocytogenes from foods and humans form distinct but overlapping populations. Applied Environmental Microbiology. 70:5833-5841. 2004
- Listeria monocytogenes sigmaB contributes to invasion of human intestinal epithelial cells. Infect Immun. 72:7374-7378. 2004
- Mastitis-causing streptococci are important contributors to bacterial counts in raw bulk tank milk. Journal of Food Protection. 67:2644-2650. 2004
- Molecular subtyping and tracking of Listeria monocytogenes in Latin-style fresh-cheese processing plants. Journal of Dairy Science. 87:2803-2812. 2004
- Quantifying the induction of sigma B-dependent gene expression under acid and osmotic stress. Microbiolgy. 150:3843-3855. 2004
- RsbT and RsbV contribute to σB-dependent survival under environmental, energy and intracellular stress conditions in Listeria monocytogenes. Applied Environmental Microbiology. 70:5349-5356. 2004
- Short communication: Growth characteristics of Streptococcus uberis in milk. Journal of Dairy Science. 87:813-815. 2004
- SigmaB-dependent gene expression and induction in Listeria monocytogenes during osmotic and acid stress conditions simulating the intestinal environment. Microbiol. 150:3843-3855. 2004
- A PCR assay for specific detection of Vibrio parahaemolyticus serotype O3:K6 from shellfish. Journal of Food Science. 68:1459-1466. 2003
- Genetic diversity and spoilage potentials among Pseudomonas spp. isolated from fluid milk products and dairy processing plants. Applied and Environmental Microbiology. 69:130-138. 2003
- Listeria monocytogenes sigma B regulates stress response and virulence functions. Journal of Bacteriology. 185:5722-5734. 2003
- Role of Listeria monocytogenes sigma(B) in survival of lethal acidic conditions and in the acquired acid tolerance response. Applied and Environmental Microbiology. 69:2692-2698. 2003
- Role of σB in regulating the compatible solute uptake systems of Listeria monocytogenes: Osmotic induction of opuC is σB dependent. Applied and Environmental Microbiology. 69:2015-2022. 2003
- Sigma(B)-dependent expression patterns of compatible solute transporter genes opuCA and lmo1421 and the conjugated bile salt hydrolase gene bsh in Listeria monocytogenes. Microbiology. 149:3247-3256. 2003
- Comparative phenotypic, molecular and virulence characterization of Vibrio parahaemolyticus O3:K6 isolates. Applied and Environmental Microbiology. 68:2901-2909. 2002
- Sensory threshold of light-oxidized flavor defects in milk. Journal of Food Science. 67:2770-2773. 2002
- Sigma B contributes to PrfA-mediated virulence in Listeria monocytogenes. Infect. Immun.. 70:3948-3952. 2002
- Vitamin A degradation and light-oxidized flavor defects in milk. Journal of Dairy Science. 85:351-354. 2002
- Acceptance of 2% ultra-pasteurized milk by consumers, 6 to 11 years old. Journal of Dairy Science. 84:951-954. 2001
- Characterization and pathogenic potential of Listeria monocytogenes isolates from the smoked fish industry. Applied and Environmental Microbiology. 67:646-653. 2001
- Comparative genetic characterization of Listeria monocytogenes isolates from human and animal listeriosis cases. Microbiol. 147:1095-1104. 2001
- Fluid dairy product quality and safety: looking to the future. Journal of Dairy Science. 84:1-11. 2001
- Fluid milk vitamin fortification compliance in New York State. Journal of Dairy Science. 84:2813-2820. 2001
- Identification & characterization of elevated microbial counts in bulk tank raw milk. Journal of Dairy Science. 84:292-298. 2001
- Microbiological and chemical quality of raw milk in NYS. Journal of Dairy Science. 81:1743-1748. 2001
- Molecular Studies on the Ecology of Listeria monocytogenes in the Smoked Fish Processing Industry. Applied and Environmental Microbiology. 67:198-205. 2001
- Molecular studies on the ecology of Listeria monocytogenes in the smoked fish processing industry. Applied and Environmental Microbiology. 67:198-205. 2001
- Quantitative descriptive analysis and principal component analysis for sensory characterization of ultrapasteurized milk. Journal of Dairy Science. 84:12-20. 2001
- Role of B in heat, ethanol, acid and oxidative stress resistance and during carbon starvation in Listeria monocytogenes. Applied and Environmental Microbiology. 67:4454-4457. 2001
- Application of the BAX for screening/genus Listeria polymerase chain reaction system for monitoring Listeria species in cold-smoked fish and in the smoked fish processing environment. Journal of Food Protection. 63:343-346. 2000
- Characterization of chocolate milk spoilage patterns. Journal of Food Protection. 63:516-521. 2000
- Effects of somatic cell count on quality and shelf-life of pasteurized fluid milk. Journal of Dairy Science. 83:264-274. 2000
- Molecular and phenotypic characterization of Pseudomonas spp. isolated from milk. Applied and Environmental Microbiology. 66:2085-2095. 2000
- Phylogeny and functional conservation of {sigma}E in endospore-forming bacteria. Microbiol.. 146:1593-1603. 2000
- Trouble-shooting sources and causes of high bacteria counts in raw milk. Dairy, Food and Environmental Sanitation. 20:606-611. 2000
- Characterization of rpoS alleles in Escherichia coli O157:H7 and in other E. coli serotypes. Journal of Applied Microbiology. 86:295-301. 1999
- Development of a PCR assay for detection of spore-forming bacteria. J. Rapid Meth. Auto. Microbiol. 7:251-262. 1999
- Effects of fat content on the sensory properties, color, melting and hardness of ice cream. Journal of Dairy Science. 82:32-38. 1999
- Effects of fat replacers on the sensory properties, color, melting, and hardness of ice cream. Journal of Dairy Science. 82:2094-2100. 1999
- Molecular investigation of a listeriosis outbreak in goats caused by an unusual strain of Listeria monocytogenes. JAVMA. 215:369-371. 1999
- Bacterial tracking in a dairy production system using phenotypic and ribotyping methods. Journal of Food Protection. 10:1336-1340. 1998
- Evaluation of ATP-Bioluminescence hygiene monitoring for trouble-shooting fluid milk shelf-life problems. Journal of Dairy Science. 81:817-820. 1998
- General stress transcription factor sigmaB and its role in acid tolerance and virulence of Listeria monocytogenes. Journal of Bacteriology. 180:3650-3656. 1998
- Light-oxidized flavor development in chocolate milk. Journal of Food Science. 63:930-934. 1998
- Microbiological and chemical quality of raw milk in New York State. Journal of Dairy Science. 81:1743-1748. 1998
- Persistence of Escherichia coli O157:H7 in dairy fermentation systems. Journal of Food Protection. 61:1602-1608. 1998
- Quality and stability of 2% fat ultrapasteurized fluid milk products. Dairy Food Environ. Sanit.. 18:78-82. 1998
- Pathogenic microorganisms of concern to the dairy industry. Dairy Food Environ. Sanit. 17:714-717. 1997
- Genetic and transcriptional organization of the region encoding the subunit of Bacillus subtilis RNA polymerase. Journal of Biological Chemistry. 270:20329-20336. 1995
- World nutrition -- the great breadfruit source. Ecology of Food and Nutrition. 33:131-134. 1994
- Western Kenya: the potential for goat milk production. World Animal Review. 62:31-40. 1987
- Protein conversion efficiencies of four test diets based on milk, two milk and tea treatments, and casein. Journal of Dairy Science. 69:979-982. 1986
- Inhibition of milk lipolysis by lambda carageenan. Journal of Dairy Science. 65:24-27. 1982
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article
- It's a shared responsibility 2011
- PI counts don’t help us predict shelf life. Hoard’s Dairyman. June 10, 2009. p. 409 2009
- Listeria monocytogenes re-emerges as a dairy industry pathogen.. Cheese Market News. :4-6. 2008
- Lessons from the spinach patch: the recent E. coli O157:H7 outbreak. Cheese Market News. :4. 2006
- Enterobacter sakazakii: an emerging human pathogen. Cheese Market News. :4-38. 2005
- Making fluid milk taste better longer 2005
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chapter
- Food safety as a bridge between the food system and human health in Sub-Saharan Africa. The African Food System and Its Interactions with Human Health and Nutrition. 161-181. 2010
- Environmental reservoir and transmission into the mammalian host. Listeria monocytogenes Pathogenesis and Host Response. 111-137. 2007
- Genetics and physiology of pathogenicity in food-borne bacterial pathogens. Food Biotechnology, 2nd edition. 1293-1327. 2006
- Spoilage microorganisms in milk and dairy products. Food Spoilage Microorganisms. 171-193. 2006
- Microbiology of market milks. Dairy Microbiology, 3rd Ed.. 2002
- Microbiology of market milks. Dairy Microbiology. 91-122. 2002
- Raw milk microbiology and fluid milk products. Applied Dairy Microbiology. 59-76. 2001
- Clostridium tyrobutyricum. Encyclopedia of Food Microbiology. 451-458. 1999
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conference paper
- Milk quality from cow to cup. NorthEast Dairy Producers Association. 51-62. 2008
- Not just for stress response: sigma B and virulence in Listeria moncytogenes. . Society for General Microbiology. 5. 2008
- Laboratory techniques to assure farm-to-table milk quality and safety. Proceedings of the III Panamerican Congress on Mastitis Control and Milk Quality. 2006
- Control of Listeria monocytogenes in sheep farming and in dairy processing. Proc. 9th Great Lakes Dairy Sheep Symposium. 4-9. 2003
- Streptococci and bulk milk bacteria counts. Natl Mastitis Council Ann Meeting Proc. 128-134. 2001
- Streptococci and bulk milk bacteria counts. National Mastitis Council Ann Meeting Proc. 128-134. 2001
- Laboratory surveillance and molecular subtyping for Listeria monocytogenes from human, animal and food sources. Food Microbiology and Food Safety into the next millenium. 111-114. 1999
- Automated ribotyping for assuring quality and safety of raw and processed milk. Proceedings of the Panamerican Congress on Mastitis Control and Raw Milk Quality. 391-394. 1998
- Food safety issues facing the dairy industry. Proceedings of the 1998 Cornell Nutrition Conference for Feed Manufacturers. 75-84. 1998
- Milk quality improvement program: the New York State experience. Proceedings of the Panamerican Congress on Mastitis Control and Raw Milk Quality. 301-304. 1998
- Raw milk bacteria tests and elevated bacteria counts on the farm: a review. Proceedings of the Panamerican Congress on Mastitis Control and Raw Milk Quality. 232-235. 1998
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conference poster
-
document part
- Bacterial populations in complementary foods and drinking water in households with children 10-15 months old in Pemba Island, Tanzania. 2009
- Bacterial populations in complementary foods and drinking water in households with children 10-15 months old in Pemba Island, Tanzania.. 873. 2008
- Contributions of multiple transcriptional regulators to Listeria monocytogenes virulence and virulence-associated phenotypes. 2008
- Effects of growth phases, temperature and stress exposure on foodborne pathogen virulence: The Listeria monocytogenes example.. 17. 2008
- Interactions between Sigma B and Sigma L appear to contribute to Listeria monocytogenes antimicrobial resistance.. 24. 2008
- Transcriptomic and phenotypic analyses suggest differences in sigma B contributions to stress response and virulence in Listeria monocytogenes strains representing lineages I, II, IIIA, and IIIB. 2008
- Breaking the 21 to 28 Day Shelf-Life Barrier on Refrigerated HTST Pasteurized Milk. 184-185. 2007
- National Needs Graduate Fellowships in Food Science at Cornell University 2007
- Protein conversion efficiencies of four test diets based on milk, two milk and tea treatments, and casein. 78. 1985
- Consumer evaluation of goat and cow milk products in western Kenya. 93. 1983
- Introduction and consumer acceptance of goat milk products in western Kenya. 518. 1982
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report
- Freezer storage: quality for now and later 2008
- Scientific criteria for ensuring safe dairy products: a report from the National Academy of Sciences. 31-32. 2004
- Genetically modified organisms: an overview. 24. 2001
- Safety of bio-engineered foods and animals. 29. 1999
- Coliform bacteria in fermented dairy products. 4. 1996
- Pathogenic microorganisms of concern to the dairy industry. 5. 1995
- Cupboard storage: quality for now and later 1990
- Refrigerator storage: quality for now and later 1990
- Consumer acceptance of goat milk products in western Kenya. 1-57. 1984
- Microscopic Evaluation of Milk - Bacteria 2009
- Microscopic Evaluation of Milk - Somatic Cells 2009
- Cornell University Food Science Department position statement on raw milk sales and consumption 2008
- Dairy Starter Cultures - Taxonomy 2008
- Dairy Starter Cultures General Characteristics 2008
- Dangers of Consuming Raw Milk 2008
- Evaluation of Shelf-life of Fluid Milk 2008
- Flavor and Odor Defects in Milk 2008
- General Dairy Bacteriology 2008
- Keeping School Milk Tasting Good 2008
- Listeria monocytogenes in the Dairy Environment 2008
- MQIP - Voluntary Shelf-Life Program 2008
- Milk Quality Improvement Program - MQIP 2008
- Preliminary Incubation Count for Raw Milk 2008
- Sanitation in Soft-Serve Frozen Dessert 2008
- Sources of Bacteria in Raw Milk - Bacteria Tests 2008
- Sources of Bacteria in Raw Milk - Review 2008
- Vitamin Fortification of Fluid Milk 2008
- Alkaline Phosphatase Test for Milk Pasteurization 2007
- Importance of Raw Milk Quality on Dairy Products 2007
- Light-Induced Defects in Milk 2007
- Light-Induced Defects in Milk - Threshold Exposure 2007
- Pasteurized versus Ultra Pasteurized Milk 2007
- Recommendations for Improved Milk Shelf Life 2004
featured in archived article
- CU food scientists keep watch over New York dairy foods
- Cornell food scientists awarded $1.67 million to improve fresh food safety
- Cornell program identifies New York State's top milk for 2005
- Cornell testers choose Crowley Foods of Albany for best milk in New York
- Professors brief Congressional staffers about food safety before key vote
Teaching
teaching activities
- FDSC-5000: Master of Professional Studies (Agriculture) Project - Spring 2013
- FDSC-8900: Master's Level Thesis Research - Spring 2013
- FDSC-9900: Doctoral-Level Thesis Research - Spring 2013
- TOX-8900: Master's Thesis and Research - Spring 2013
- TOX-9900: Doctoral Thesis and Research - Spring 2013
- FDSC-5000: Master of Professional Studies (Agriculture) Project - Fall 2012
- FDSC-6960: Graduate Internship in Food Science - Fall 2012
- FDSC-8900: Master's Level Thesis Research - Fall 2012
- FDSC-9900: Doctoral-Level Thesis Research - Fall 2012
- TOX-8900: Master's Thesis and Research - Fall 2012
- TOX-9900: Doctoral Thesis and Research - Fall 2012
- FDSC-5000: Master of Professional Studies (Agriculture) Project - Spring 2012
- FDSC-8900: Master's Level Thesis Research - Spring 2012
- FDSC-9900: Doctoral-Level Thesis Research - Spring 2012
- TOX-8900: Master's Thesis and Research - Spring 2012
- TOX-9900: Doctoral Thesis and Research - Spring 2012
- FDSC-5000: Master of Professional Studies (Agriculture) Project - Fall 2011
- FDSC-6960: Graduate Internship in Food Science - Fall 2011
- FDSC-8900: Masters-Level Thesis Research - Fall 2011
- FDSC-9900: Doctoral-Level Thesis Research - Fall 2011
- TOX-8900: Master's Thesis and Research - Fall 2011
- TOX-9900: Doctoral Thesis and Research - Fall 2011
Service
outreach overview
- The dairy foods extension team specializes in delivering research driven, science-based educational programs for all sectors of the NYS and Northeastern dairy foods industry, from farm to consumer. The Milk Quality Improvement Program, which is funded by NYS dairy farmer check-off dollars, works in collaboration with the NYS Department of Agriculture and Markets to provide a multi-pronged, non-regulatory, educational approach for improving dairy product quality. Cornell food scientists sample and evaluate the microbiological, sensory, and chemical characteristics of fluid milk products manufactured in processing plants throughout New York State and provide timely and direct feedback, including plant visits for targeted trouble-shooting, to enable product quality improvement by visiting each plant in NYS twice a year. Impact and success are measured by monitoring the numbers of plants participating in our program as well as changes in the measured quality of the products that are sampled. Cornell also coordinates programs for dairy industry professionals through the New York State Cheese Manufacturers’ Association, the New York State Association for Food Protection, the American Dairy Science Association, and the International Association for Food Protection. Impact and success are monitored by tracking numbers of attendees over the years as well as by surveying program participants.
service to the profession
- American Society for Microbiology Presidential Nominating Committee Committee Member 2008 -
- New York State Dairy Industry Task Force Member 2007 -
- New York State Interagency Task Force on Food Safety and Security Member 2003 -
- Institute of Food Technologists (IFT) annual awards program Chairperson 2003 -
- International Dairy Foods Association Paratuberculosis Task Force Committee Member 2000 -
- American Dairy Science Association annual awards program Juror 2000 -
- New York State Dairy Exhibits, Inc. of the NYS Fair Board of Directors 2000 -
- New York State Cheese Manufacturers’ Association Board Member 1998 -
- New York State Association for Food Protection Board of Directors 1997 -
- Milk Quality Improvement Program Director 1997 -
- Epsilon Sigma Phi National Honorary Extension Fraternity
- American Society for Microbiology annual award committee Chairperson 2008 - 2011
- National University of Ireland, DSc evaluation Examiner 2008
- Program review team, Food Science Department, King Saud University, Riyadh, Saudi Arabia Reviewer 2008
reviewer or editor for
Background
education and training
- Ph.D. in, University of California, Davis 1994
- M.S. in, University of Wisconsin-Madison 1983
- B.S. in, Cornell University 1980
awards and honors
- Emmett R. Gauhn Memorial Award, 2012
- GMA Food Safety Award, 2010
- Faculty Fellow, 2009
- Branch Lecturer, 2009
- Fellow, 2008
- Fellow, 2007
- William V. Hickey Award, 2006
- DeLaval dairy Extension Award, 2006
- David K. Bandler Cheese Industry Award
- Research Award in Dairy Foods Processing
Other
college
- CALS
research keyword
- alternative sigma factors
- bacterial RNA polymerase
- bacterial pathogenesis
- dairy microbiology
- food processing microbiology
- food safety
- foodborne pathogens
- product shelf life extension
- regulation of bacterial transcription
name prefix
- Professor