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Joseph Uknalis
Core Technologies
Biologist

Phone: (215) 233-6439
Fax:

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Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Coating with phenolic branched-chain fatty acid reduces Listeria innocua populations on apple fruit Reprint Icon - (Peer Reviewed Journal)
Ryu, V.N., Uknalis, J., Lew, H.N., Jin, Z.T., Fan, X. 2024. Coating with phenolic branched-chain fatty acid reduces Listeria innocua populations on apple fruit. International Journal of Food Microbiology. 419:110748. https://doi.org/10.1016/j.ijfoodmicro.2024.110748.
Attachment of Salmonella Typhimurium and survival on post-harvest produce and seed Reprint Icon - (Peer Reviewed Journal)
Olanya, O.M., Mukhopadhyay, S., Ukuku, D.O., Niemira, B.A., Uknalis, J. 2024. Attachment of Salmonella Typhimurium and survival on post-harvest produce and seed. Food Science and Technology Research. 30(4). https://doi.org/10.3136/fstr.FSTR-D-24-00032.
Bio-based phenolic branched-chain fatty acid emulsion achieved similar reductions of Listeria innocua population on apple fruit as chlorinated water Reprint Icon - (Peer Reviewed Journal)
Ryu, V.N., Chuesiang, P., Uknalis, J., Lew, H.N., Jin, Z.T., Fan, X. 2024. Bio-based phenolic branched-chain fatty acid emulsion achieved similar reductions of Listeria innocua population on apple fruit as chlorinated water. Food Control. 10. https://doi.org/10.1016/j.heliyon.2024.e24901.
Mechanism of synergistic photoinactivation utilizing curcumin and lauric arginate ethyl ester against Escherichia coli and Listeria innocua Reprint Icon - (Peer Reviewed Journal)
Ryu, V.N., Uknalis, J., Corradini, M.G., Chuesiang, P., McLandsborough, L., Lew, H.N., Jin, Z.T., Fan, X. 2023. Mechanism of synergistic photoinactivation utilizing curcumin and lauric arginate ethyl ester against Escherichia coli and Listeria innocua. Food Chemistry. 12(23). https://doi.org/10.3390/foods12234195.
Combination effect of papaya extract and high pressure processing on Salmonella inactivation on raw chicken breast meat and meat quality assessment Reprint Icon - (Peer Reviewed Journal)
Chen, Y., Hsu, H., Chai, H., Uknalis, J., Sheen, S. 2021. Combination effect of papaya extract and high pressure processing on Salmonella inactivation on raw chicken breast meat and meat quality assessment. Journal of Food Science. 133, Part B. https://doi.org/10.1016/j.foodcont.2021.108637.
Bacteriophages against Vibrio coralliilyticus and Vibrio tubiashii: Isolation, characterization and remediation of larval oyster mortalities Reprint Icon - (Peer Reviewed Journal)
Richards, G.P., Watson, M.A., Madison, D., Soffer, N., Needleman, D.S., Soroka, D.S., Uknalis, J., Baranzoni, G., Church, K.M., Poison, S.W., Elston, R., Langdon, C., Sulakvelictze, A. 2021. Bacteriophages against Vibrio coralliilyticus and Vibrio tubiashii: Isolation, characterization and remediation of larval oyster mortalities. Applied and Environmental Microbiology. 87. https://doi.org/10.1128/AEM.00008-21.
Pathogen reduction by predatory bacteria and survival of Bdellovibrio bacteriovorus and Escherichia coli on produce and buffer treated with low-dose gamma radiation Reprint Icon - (Peer Reviewed Journal)
Olanya, O.M., Niemira, B.A., Cassidy, J.M., Boyd, G., Uknalis, J. 2020. Pathogen reduction by predatory bacteria and survival of Bdellovibrio bacteriovorus and Escherichia coli on produce and buffer treated with low-dose gamma radiation. LWT - Food Science and Technology. 130:1-7. https://doi.org/10.1016/j.lwt.2020.109630..
Effect of papaya extract and high-pressure processing on Salmonella population, color and texture of chicken breast - (Abstract Only)
Chen, Y., Chai, H., Uknalis, J., Hsu, H., Sheen, S. 2020. Effect of papaya extract and high-pressure processing on Salmonella population, color and texture of chicken breast. Meeting Abstract. Volume 1, Page 1., IFT Virtual Presentation, 7/13/2020
Nisin-based antimicrobial combination with cold plasma treatment inactivate Listeria monocytogenes on granny smith apples Reprint Icon - (Peer Reviewed Journal)
Ukuku, D.O., Niemira, B.A., Uknalis, J. 2019. Nisin-based antimicrobial combination with cold plasma treatment inactivate Listeria monocytogenes on granny smith apples. LWT - Food Science and Technology. 104:120-127. https://doi.org/10.1016/j.lwt.2018.12.049.
Inactivation of pathogenic bacteria on post-harvest produce by predatory bacteria and hurdle treatments - (Proceedings)
Olanya, O.M., Niemira, B.A., Ukuku, D.O., Mukhopadhyay, S., Uknalis, J. 2019. Inactivation of pathogenic bacteria on post-harvest produce by predatory bacteria and hurdle treatments. UJNR Food & Agricultural Panel Proceedings. UJNR, Page 29-30.
Bacteriophages against pathogenic vibrios in Delaware Bay oysters (Crassostrea virginica) during a period of high levels of pathogenic vibrio parahaemolyticus Reprint Icon - (Peer Reviewed Journal)
Richards, G.P., Chintapenta, L.K., Watson, M.A., Abbott, A.G., Ozbay, G., Uknalis, J., Oyelade, A., Parveen, S. 2019. Bacteriophages against pathogenic vibrios in Delaware Bay oysters (Crassostrea virginica) during a period of high levels of pathogenic vibrio parahaemolyticus. Food and Environmental Virology. https://doi.org/10.1007/s12560-019-09365-5.
Development of magnesium oxide-zeolite catalysts for isomerization of fatty acids Reprint Icon - (Peer Reviewed Journal)
Zhang, J., Uknalis, J., Moreau, R.A., Lew, H.N. 2019. Development of magnesium oxide-zeolite catalysts for isomerization of fatty acids. Catalysis Letters. 149:303-312. https://doi.org/10.1007/s10562-018-2601-3.
Thermal stability and degradation kinetics of vegetable-tanned collagen fiber with in-situ precipitated calcium carbonate - (Peer Reviewed Journal)
Liu, J., Brown, E.M., Uknalis, J., Liu, C., Luo, L., Tang, K. 2018. Thermal stability and degradation kinetics of vegetable-tanned collagen fiber with in-situ precipitated calcium carbonate. Journal of American Leather Chemists Association. 113(11):358-370.
The effect of previous life cycle stage on the growth kinetics, morphology and antimicrobial resistance of Salmonella Typhimurium DT104 in brain heart infusion and ground chicken extract Reprint Icon - (Peer Reviewed Journal)
Hawkins, J., Uknalis, J., Oscar, T.P., Schwartz, J., Vimini, B., Parveen, S. 2018. The effect of previous life cycle stage on the growth kinetics, morphology and antimicrobial resistance of Salmonella Typhimurium DT104 in brain heart infusion and ground chicken extract. bioRxiv. Available:https://doi.org/10.1101/326579. https://doi.org/10.1101/326579.
Surface characterization of cottonseed meal products by SEM, SEM-EDS, XRD and XPS analysis - (Peer Reviewed Journal)
He, Z., Cheng, H.N., Olanya, O.M., Uknalis, J., Zhang, X., Koplitz, B.D., He, J. 2018. Surface characterization of cottonseed meal products by SEM, SEM-EDS, XRD and XPS analysis. Journal of Materials Science Research. 7(1):28-40.
Effects of particle size on the morphology and water- and thermo-resistance of washed cottonseed meal-based wood adhesives Reprint Icon - (Peer Reviewed Journal)
He, Z., Cheng, H.N., Klasson, K.T., Olanya, O.M., Uknalis, J. 2017. Effects of particle size on the morphology and water- and thermo-resistance of washed cottonseed meal-based wood adhesives. Polymers. 9(12):675. https://doi.org/10.3390/polym9120675.
Sophorolipid biosurfactant against bacteria relevant to tooth caries and skin hygiene - (Abstract Only)
Antimicrobial and cold plasma treatments for inactivation of listeria monocytogenes on whole apple surface - (Abstract Only)
Ukuku, D.O., Niemira, B.A., Uknalis, J. 2017. Antimicrobial and cold plasma treatments for inactivation of listeria monocytogenes on whole apple surface. [Abstract].Annual Meeting of the Institute of Food Technologists.Las Vegas, NV., Volume 1, Page 1.
Mechanisms for pseudoalteromonas piscicida-induced killing of vibrios and other bacterial pathogens - (Peer Reviewed Journal)
Richards, G.P., Watson, M.A., Needleman, D.S., Uknalis, J., Boyd, E., Fay, J.P. 2017. Mechanisms for pseudoalteromonas piscicida-induced killing of vibrios and other bacterial pathogens. Applied and Environmental Microbiology. doi: 10.1128/AEM.00175-17.
Characterization of growth inhibition of oral bacteria by sophorolipid using a microplate-format assay - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Uknalis, J. 2017. Characterization of growth inhibition of oral bacteria by sophorolipid using a microplate-format assay. Journal of Microbiological Methods. 136:21-29. doi: 10.1016/j.mimet.2017.02.012.
In-package inhibition of E.coli 0157:H7 on bulk romaine lettuce using cold plasma - (Peer Reviewed Journal)
Min, S.C., Roh, S., Niemira, B.A., Boyd, G., Sites, J.E., Uknalis, J., Fan, X. 2017. In-package inhibition of E.coli 0157:H7 on bulk romaine lettuce using cold plasma. Food Microbiology. 65:1-6.
Inactivation of Salmonella spp. and Listeria spp. by palmitic, stearic and oleic acid sophorolipids and thiamine dilauryl sulfate - (Peer Reviewed Journal)
Zhang, X., Ashby, R.D., Solaiman, D., Uknalis, J., Fan, X. 2016. Inactivation of Salmonella spp. and Listeria spp. by palmitic, stearic and oleic acid sophorolipids and thiamine dilauryl sulfate. Frontiers in Microbiology. doi: 10.3389/fmicb.2016.02076.
Inactivation of Escherichia coli 0157:H7 and aerobic microorganisms in Romaine lettuce packaged in a commercial polyethylene terephthalate container using atmospheric cold plasma - (Peer Reviewed Journal)
Min, S., Roh, S., Boyd, G., Sites, J.E., Uknalis, J., Fan, X., Niemira, B.A. 2017. Inactivation of Escherichia coli 0157:H7 and aerobic microorganisms in Romaine lettuce packaged in a commercial polyethylene terephthalate container using atmospheric cold plasma. Journal of Food Protection. 80(1):35-43.
In-package inactivation of human pathogenic bacteria and viruses on leafy greens using atmospheric cold plasma as a terminal processing step - (Abstract Only)
Niemira, B.A., Min, S., Roh, S., Boyd, G., Sites, J.E., Uknalis, J. 2016. In-package inactivation of human pathogenic bacteria and viruses on leafy greens using atmospheric cold plasma as a terminal processing step. Meeting Abstract. Volume 1: Page 1, 1st International Workshop on Plasma Agriculture; May 15,2016; Camden, NJ.
Purification and host specificity of predatory halobacteriovorax isolated from seawater - (Peer Reviewed Journal)
Richards, G.P., Fay, J.P., Uknalis, J., Olanya, O.M., Watson, M.A. 2016. Purification and host specificity of predatory halobacteriovorax isolated from seawater. Applied and Environmental Microbiology. 82(3):922-927.
Improving agar electrospinnability with choline-based deep eutectic solvents - (Peer Reviewed Journal)
Sousa, A.M., Souza, H.K., Uknalis, J., Liu, S.C., Goncalves, M.P., Liu, L.S. 2015. Improving agar electrospinnability with choline-based deep eutectic solvents. International Journal of Biological Macromolecules. 80:139-148. DOI: 10.1016/j.ijbiomac.2015.06.034.
Inactivation of Salmonella spp. in ground chicken using High Pressure Processing - (Peer Reviewed Journal)
Sheen, S., Cassidy, J.M., Scullen, O.J., Uknalis, J., Sommers, C.H. 2015. Inactivation of Salmonella spp. in ground chicken using High Pressure Processing. Food Control. 57:41-47.
Electrospinning of agar/PVA aqueous solutions and its relation with rheological properties Reprint Icon - (Peer Reviewed Journal)
Sousa, A., Souza, H., Uknalis, J., Liu, S., Goncalves, M., Liu, L.S. 2015. Electrospinning of agar/PVA aqueous solutions and its relation with rheological properties. Carbohydrate Polymers. 115:348-355. DOI: 10.1016/j.carbpol.2014.08.074.
Application of tung oil to improve adhesion strength and water resistance of cottonseed meal and protein adhesives on maple veneer - (Peer Reviewed Journal)
He, Z., Chapital, D.C., Cheng, H.N., Klasson, K.T., Olanya, O.M., Uknalis, J. 2014. Application of tung oil to improve adhesion strength and water resistance of cottonseed meal and protein adhesives on maple veneer. Industrial Crops and Products. 61:398-402.
Pelletized biochar as a carrier for AM fungi in the on-farm system of inoculum production in compost and vermiculite mixtures Reprint Icon - (Peer Reviewed Journal)
Douds, D.D., Lee, J., Uknalis, J., Boateng, A.A., Ziegler-Ulsh, C. 2014. Pelletized biochar as a carrier for AM fungi in the on-farm system of inoculum production in compost and vermiculite mixtures. Compost Science and Utilization. 22(4):253-262.
Seasonal levels of the Vibrio predator Bacteriovorax in Atlantic, Pacific and Gulf Coast Seawater - (Peer Reviewed Journal)
Richards, G.P., Watson, M.A., Boyd, F., Burkhardt Iii, W., Lau, R., Uknalis, J., Fay, J.P. 2013. Seasonal levels of the Vibrio predator Bacteriovorax in Atlantic, Pacific and Gulf Coast Seawater. International Journal of Microbiology. doi:10.1155/2013/375371.
Development of an alternative low salt bovine hide preservation using PEG and crude glycerol, part II: mechanical properties of leather products - (Peer Reviewed Journal)
Ramos, M., Muir, Z.E., Uknalis, J., Trusello, J. 2015. Development of an alternative low salt bovine hide preservation using PEG and crude glycerol, part II: mechanical properties of leather products. Journal of American Leather Chemists Association. 110(5):125-129.
High-throughput antibody microarray for bacteria and toxins - (Abstract Only)
A high-throughput antibody-based microarray typing platform - (Peer Reviewed Journal)
Gehring, A.G., Barnett, C., Chu, T., Debroy, C., D'Souza, D., Eaker, S., Fratamico, P.M., Gillespie, B., Hedge, N., Jones, K., Lin, J., Oliver, S., Paoli, G., Perera, A., Uknalis, J. 2013. A high-throughput antibody-based microarray typing platform. Sensors. DOI: 10.3390/s130505737.
Effects of sugar addition in luria bertania (LB) media on Escherichia coli 0157:H7 - (Peer Reviewed Journal)
Medina, M.B., Uknalis, J., Tu, S. 2011. Effects of sugar addition in luria bertania (LB) media on Escherichia coli 0157:H7. Journal of Food Safety. 31(3):386-394.
Production of Shiga-like toxins by Escherichia coli O157:H7: Effects of other bacteria and analogues of quorum sensing molecules - (Peer Reviewed Journal)
Tu, S., Uknalis, J., Paoli, G., He, Y., Gehring, A.G. 2009. Production of Shiga-like toxins by Escherichia coli O157:H7: Effects of other bacteria and analogues of quorum sensing molecules. Journal of Rapid Methods and Automation in Microbiology.17(4):420-437.
Pathogen detection in produce using applications of immunomagnetic beads and biosensors - (Book / Chapter)
Tu, S., Uknalis, J., Gehring, A.G., Irwin, P.L. 2009. Pathogen detection in produce using applications of immunomagnetic beads and biosensors. In: Fan, X., Niemira, B.A.. Microbial Safety of Fresh Produce. Wiley-Blackwell: IFT Press. p. 331-348.
Application of horse-radish peroxidase linked chemiluminescence to determine the production mechanism of Shiga-like toxins by E. coli O157:H7 - (Proceedings)
Tu, S., Uknalis, J., Gehring, A.G., He, Y. 2007. Application of horse-radish peroxidase linked chemiluminescence to determine the production mechanism of Shiga-like toxins by E. coli O157:H7. Proceedings of SPIE.#6761
Application of horse-radish peroxidase linked chemiluminescence to determine the production mechanism of Shiga-like toxins by E. coli O157:H7 - (Proceedings)
Tu, S., Uknalis, J., Gehring, A.G., He, Y. 2007. Application of horse-radish peroxidase linked chemiluminescence to determine the production mechanism of Shiga-like toxins by E. coli O157:H7. Proceedings of SPIE.6761:67610C-1-67610C-9.
FIBEROPTIC BIOSENSOR EMPLOYING ALEXA-FLUOR CONJUGATED ANTIBODY FOR DETECTION OF ESCHERICHIA COLI O157:H7 AND SHIGA-LIKE TOXINS - (Proceedings)
Tu, S., Geng, T., Uknalis, J., Bhunia, A.K. 2006. Fiberoptic biosensor employing alexa-fluor conjugated antibody for detection of escherichia coli o157:h7 and shiga-like toxins. Proceedings of SPIE. 6:(6381:638106-1).
PIEZOELECTRIC EXCITED MILLIMETER-SIZED CANTILEVER (PEMC) SENSOR DETECTS ESCHERICHIA COLI 0157:H7 IN TWO-HOUR INCUBATED SAMPLES AT 4 CFU PER GRAM OF BEEF - (Peer Reviewed Journal)
Campbell, G.A., Uknalis, J., Tu, S., Mutharasan, R. 2006. Piezoelectric excited millimeter-sized cantilever (pemc) sensor detects escherichia coli 0157:h7 in two-hour incubated samples at 4 cfu per gram of beef. Biosensors and Bioelectronics. 22(2007)1296-1302
FIBER-OPTIC BIOSENSOR EMPLOYING ALEXA-FLUOR CONJUGATED ANTIBODY FOR DETECTION OF ESCHERICHIA COLI 0157:H7 FROM GROUND BEEF IN FOUR HOURS - (Peer Reviewed Journal)
Geng, T., Uknalis, J., Tu, S., Bhunia, A. 2006. Fiber-optic biosensor employing alexa-fluor conjugated antibody for detection of escherichia coli 0157:h7 from ground beef in four hours. Sensors. 6:796-807
LUMINESCENT METHODS TO DETECT VIABLE AND TOTAL TARGETED ESCHERICHIA COLI 0157:H7 SPIKED IN GROUND BEEF - (Peer Reviewed Journal)
Tu, S., Uknalis, J., Yamashoji, S., Gehring, A.G., Irwin, P.L. 2005. Luminescent methods to detect viable and total targeted escherichia coli 0157:h7 spiked in ground beef. Journal of Rapid Methods and Automation in Microbiology. 2005. 13. pp. 57-70.
OPTICAL METHODS FOR DETECTING ESCHERICHIA COLI 0157:H7 SPIKED ON CANTALOUPES - (Proceedings)
Tu, S., Uknalis, J., Gehring, A.G. 2004. Optical methods for detecting escherichia coli 0157:h7 spiked on cantaloupes. Proceedings of SPIE. 5587. pp. 183-189.
DYNAMIC FACTORS CONTROLLING THE PATHOGEN CAPTURE BY IMMUNO MAGNETIC BEADS - (Abstract Only)
Tu, S., Uknalis, J., Gore, M., Irwin, P.L. 2004. Dynamic factors controlling the pathogen capture by immuno magnetic beads. American Chemical Society National Meeting.
OPTICAL METHODS FOR DETECTING E. COLI 0157:H7 SPIKED ON CANTALOUPES - (Abstract Only)
Tu, S., Uknalis, J., Gehring, A.G. 2004. Optical methods for detecting e. coli 0157:h7 spiked on cantaloupes. International Society for Optical Engineering. Paper No. 6-183.
FACTORS AFFECTING THE BACTERIAL CAPTURE EFFICIENCY OF IMMUNO BEADS: A COMPARISON BETWEEN BEADS WITH DIFFERENT SIZE AND DENSITY - (Peer Reviewed Journal)
TU, S., UKNALIS, J., GORE, M., IRWIN, P.L., FEDER, I.E. FACTORS AFFECTING THE BACTERIAL CAPTURE EFFICIENCY OF IMMUNO BEADS: A COMPARISON BETWEEN BEADS WITH DIFFERENT SIZE AND DENSITY. JOURNAL OF RAPID METHODS AND AUTOMATION IN MICROBIOLOGY 11: 35-46. 2003.
THE CAPTURE OF ESCHERICHIA COLI 0157:H7 FOR LIGHT ADDRESSABLE POTENTIOMETRIC SENSOR (LAPS) USING TWO DIFFERENT TYPES OF MAGNETIC BEADS - (Peer Reviewed Journal)