P. Zhao

Publications71
h-index23
Citations1,873
Highly Influential Citations86
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Inactivation of Salmonella and Escherichia coli O157:H7 on lettuce and poultry skin by combinations of levulinic acid and sodium dodecyl sulfate.
Four organic acids (lactic acid, acetic acid, caprylic acid, and levulinic acid) and sodium dodecyl sulfate (SDS) were evaluated individually or in combination for their ability to inactivate… Expand
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Development of a model for evaluation of microbial cross-contamination in the kitchen.
Foods can become contaminated with pathogenic microorganisms from hands, the cutting board, and knives during preparation in the kitchen. A laboratory model was developed to determine occurrence of… Expand
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Occurrence of Salmonella enterica serotype typhimurium DT104A in retail ground beef.
Surveillance data of cattle and human isolates of Salmonella enterica serovar Typhimurium DT104 indicate that this pathogen emerged worldwide in the 1980s, particularly in cattle. Studies were… Expand
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Multisymplectic geometry and multisymplectic Preissmann scheme for the KdV equation
The multisymplectic structure of the KdV equation is presented directly from the variational principle. From the numerical view point, we give a multisymplectic twelve-points scheme which is… Expand
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Glutathione conjugates in the vacuole are degraded by gamma-glutamyl transpeptidase GGT3 in Arabidopsis.
gamma-Glutamyl transpeptidase (GGT) is the enzyme responsible for breaking the gamma-glutamyl bond between Glu and Cys in glutathione (GSH). We are using this gene family to study GSH degradation in… Expand
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Caffeoyl arbutin and related compounds from the buds of Vaccinium dunalianum.
Dunalianosides A-I (1-9), esters of arbutin and related phenolic glucosides, were isolated from the buds of Vaccinium dunalianum Wight (Ericaceae) together with 20 known compounds, and their… Expand
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Regulation of lithospermic acid B and shikonin production in Lithospermum erythrorhizon cell suspension cultures.
Cell suspension cultures of Lithospermum erythrorhizon produced a large amount of lithospermic acid B, a caffeic acid tetramer, as well as shikonin derivatives (each ca. 10% of dry wt.) when cultured… Expand
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Control of Listeria monocytogenes in a Biofilm by Competitive-Exclusion Microorganisms
ABSTRACT Biofilms from drains in food processing facilities with a recent history of no detectable Listeria monocytogenes in floor drains were cultured for microorganisms producing antilisterial… Expand
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Inactivation of Escherichia coli O157:H7 and Salmonella typhimurium DT 104 on alfalfa seeds by levulinic acid and sodium dodecyl sulfate.
Studies were conducted to determine the best concentration and exposure time for treatment of alfalfa seeds with levulinic acid plus sodium dodecyl sulfate (SDS) to inactivate Escherichia coli… Expand
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Chlorine inactivation of Escherichia coli O157:H7 in water.
Six human isolates of Escherichia coli O157:H7 and E. coli (ATCC 11229) were used to determine the concentrations of free chlorine and exposure times required for inactivation. Free chlorine… Expand
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