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... Contamination of fresh produce with the foodborne pathogens Salmonella enterica, Listeria monocytogenes, and Escherichia coli O157:H7 continues to be problematic, resulting in outbreaks of foodborne illness and costly corporate recalls. Various individual concentrations of citric or lactic acids (0.35 to 0.61%) or isopropyl citrate (0.16 to 0.54%) combined with two generally recognized as safe sur ...
... This study focused on advancing a rapid turbidimetric bioassay to screen antimicrobials using specific cocktails of targeted foodborne bacterial pathogens. Specifically, to show the relevance of this rapid screening tool, the antimicrobial potential of generally recognized as safe calcium diacetate (DAX) and blends with cranberry (NC) and oregano (OX) natural extracts was evaluated. Furthermore, t ...
... Lactobacillus helveticus, an obligatory hetero-fermentative LAB, is Generally Recognized as Safe (GRAS) and is gaining popularity for application in dairy products. Lactic acid bacteria (LAB) play a remarkable role in inhibiting the growth of pathogenic bacteria in food products, without disturbing the sensory attributes of the food. In this study, the screening of the antimicrobial potential of L ...
... Bacteriophages have attracted great attention for application in food biopreservation. Lytic bacteriophages specific for human pathogenic bacteria can be isolated from natural sources such as animal feces or industrial wastes where the target bacteria inhabit. Lytic bacteriophages have been tested in different food systems for inactivation of main food-borne pathogens including Listeria monocytoge ...
... The main objective was to assess the effectiveness of preharvest application of chitosan (CH) and tea tree essential oil (TT) in butterhead lettuce in controlling native microflora growth and counteract exogenous Escherichia coli O157:H7 contamination. TT and CH were applied to lettuce plants at 14, 10, 7, 3 and 0 days before harvest. CH showed significant reductions at harvest on mesophilic (−2.0 ...
... Two naturally occurring, generally recognized as safe compounds, namely, caprylic acid (CA) (1%) and b -resorcylic acid (BR) (1%), and their combination, applied at 23 and 60°C were evaluated for their antimicrobial effects against Escherichia coli O157:H7 on cattle hides in the presence and absence of bovine feces. Fresh cleaned cattle hides were cut into pieces (5 cm2), air dried, and inoculated ...
... Enterohemorrhagic Escherichia coli (EHEC) have been responsible for several outbreaks of hemolytic–uremic syndrome (HUS) worldwide. HUS is the most common cause of acute renal failure in children and results in fatalities as high as 50% in the elderly. Currently, neither a specific treatment nor a vaccine is available for EHEC. Lactococcus lactis is a generally regarded as safe “GRAS” bacterium th ...
... Direct-fed microbials (DFM) have been employed in ruminant production for over 30 yr. Originally, DFM were used primarily in young ruminants to accelerate establishment of the intestinal microflora involved in feed digestion and to promote gut health. Further advancements led to more sophisticated mixtures of DFM that are targeted at improving fiber digestion and preventing ruminal acidosis in mat ...
... Inactivation of Listeria monocytogenes, Salmonella enteritidis and Escherichia coli O157:H7 and shelf life extension of fresh-cut pears using malic acid (MA) and quality stabilizing compounds (N-acetyl-L-cysteine, glutathione and calcium lactate; CGLW) were investigated. Trays of treated fresh-cut pears were wrap sealed with a thick polypropylene film (64 μm) semipermeable to water vapor, O₂ and C ...
... The potential for natural antimicrobial compounds extracted from true cinnamon (Cinnamomum zeylanicum Nees ) to use as a food additive to extend the shelf life of fresh-cut apples was investigated. Several different extracts were prepared using cinnamon bark and powder to evaluate their antimicrobial activity on two marker microorganisms, Escherichia coli O157:H7 and Listeria innocua. An ethanolic ...