Aims: In this study, a capillary polymerase chain reaction (cPCR) was applied for Salmonella detection from poultry meat.
Methods And Results: Salmonella detection limits of the optimized cPCR were determined with DNA templates from the samples of tetrathionate broth (TTB), Rappaport Vassiliadis broth (RVB) and selenite cystine broth (SCB) artificially contaminated with 10-fold dilutions of 6 x 10(8) CFU ml(-1) of pure Salmonella enterica ssp. enterica serovar Enteritidis 64K stock culture. Detection limits of cPCR from TTB, RVB and SCB were found as 6, 6 x 10(1) and 6 x 10(4) CFU ml(-1), respectively. In addition, detection limits of bacteriology were also determined as 6 CFU ml(-1) with TTB and SCB, and 6 x 10(1) CFU ml(-1) with RVB. A total of 200 samples, consisting of 100 chicken and 100 turkey meat samples, were tested with optimized cPCR and bacteriology. Eight and six per cent of the chicken meat samples were found to harbour Salmonella by cPCR and standard bacteriology, respectively. Of six Salmonella isolates, four belonged to serogroup D, two to serogroup B.
Conclusions: The TTB cultures of both artificially and naturally contaminated samples were found to be superior to those of RVB and SCB cultures in their cPCR results. This cPCR, utilizing template from 18-h TTB primary enrichment broth culture, takes approximately 40 min in the successful detection of Salmonella from poultry meat.
Significance And Impact Of The Study: This study shows that cPCR from TTB enrichment culture of poultry meat would enable rapid detection of Salmonella in laboratories with low sample throughput and limited budget.
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http://dx.doi.org/10.1111/j.1472-765X.2006.02033.x | DOI Listing |
Hospital wastewater (HWW) is a major pollutant that presents significant risks to both environmental and human health. In this study, we developed a novel, inexpensive and highly antibacterial magnetic nanocomposite composed of FeO nanoparticles synthesised from spent pickling liquors, coated with chitosan and then integrated with polyhexamethylene guanidine hydrochloride (FeO@CS@PHMG) using sodium tripolyphosphate (TPP) as a crosslinking agent. The obtained results revealed that the synthesised nanocomposite exhibited high antibacterial activity against and .
View Article and Find Full Text PDFHeliyon
January 2025
Yadav Measurements Private Limited, Udaipur, 313003, Rajasthan, India.
Intensification of shrimp farming practices has increased the number and severity of disease outbreaks globally. As a result, diseases have become a significant barrier to profitable and sustainable shrimp production. Shrimp farming practices are reviving in India after its downfall in the late 90s.
View Article and Find Full Text PDFJ Sci Food Agric
January 2025
Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education and Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region and Key Laboratory of Microbiology, College of Heilongjiang Province and School of Life Sciences, Heilongjiang University, Harbin, China.
Background: Jersey milk, known for its high protein content, is an excellent base for yogurt production. Given that Jersey milk is derived from Jersey cows, this study was to isolate probiotics from Jersey cow feces and investigate their potential as alternative starter cultures for fermenting Jersey milk. Our goal was to develop new starter cultures specifically suited for Jersey yogurt production, while also contributing to the diversity of fermentation agents available for dairy products.
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January 2025
Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu, China.
Salmonella is a common foodborne zoonotic pathogen that poses a great threat to human health and breeding industry. The rapid detection of Salmonella is necessary for early prevention and control. In this study, a subtractive inhibition assay (SIA) based on surface plasmon resonance (SPR) for the rapid detection of Salmonella was developed.
View Article and Find Full Text PDFFood Chem
January 2025
School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China.
A chromogenic system utilizing a novel bacteriophage-integrated nanozyme was established for Proteus penneri detection. Initially, a novel bacteriophage PpZDSS02 was isolated and identified, demonstrating exceptional biological properties and harboring genes that exhibit specific recognition ability. Afterwards, a PpZDSS02-integrated Cu-MOF nanozyme (Cu-MOF@PpZDSS02) with peroxidase-mimicking activity was prepared, catalyzing 3, 3', 5, 5'-tetramethylbenzidine (TMB) chromogenic reaction.
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