Inactivation of Escherichia coli O157:H7 and Salmonella Typhimurium in edible bird's nest by low-energy X-ray irradiation

This study evaluated the efficacy of low-energy X-ray with cut-off energy of 150 KeV to inactivate two of the most prevalent foodborne pathogens in dry edible bird's nest (EBN). The X-ray irradiation at 350 and 400 Gy decreased E. coli O157:H7 and S. Typhimurium from 6.35 ± 0.56 and 5.84 ± 0.67 log CFU/g, respectively, to undetectable level. The low-energy X-ray irradiation yielded the tR1 value of 37.6 ± 6.9 and the D10 value of 83.3 ± 7.0 Gy for E. coli O157:H7 and S. Typhimurium, respectively, which indicates that S. Typhimurium exhibited more resistant to low-energy X-ray irradiation than E. coli O157:H7. Based on dose distribution in 10 sacked pieces of EBN, two-sided irradiation can assure the uniformity of processing. As for the quality of processed EBN, while the irradiation increased the yellowness of EBN (p 
Source: Food Control - Category: Food Science Source Type: research

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This study provides scientific data to better understand the risks of potential VBNC foodborne pathogens during fresh produce washing.
Source: Food Control - Category: Food Science Source Type: research
Publication date: Available online 23 January 2020Source: Process BiochemistryAuthor(s): Prakashkumar Nallasamy, Thenmozhi Ramalingam, Nooruddin Thajuddin, Rajasree Shanmuganathan, Arivalagan Pugazhendhi, Suganthy NatarajanAbstractStarch is a natural, renewable biopolymer widely used in pharmaceutical industry for the controlled release of drugs and hormones. Triphala Churna (TC) a tridoshic rasayana, rich in polyphenols and vitamin C possess balancing and rejuvenating effect on three constitutional elements that govern the human life. To enhance the solubility and efficiency of the ayurvedic drug TC, attempts were made to...
Source: Process Biochemistry - Category: Biochemistry Source Type: research
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Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
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Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Review Source Type: research
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Source: EurekAlert! - Infectious and Emerging Diseases - Category: Infectious Diseases Source Type: news
The objective of this study was to study the inactivation kinetics of Escherichia coli O157:H7 and Salmonella Typhimurium under microwave pasteurization at temperatures between 80 and 90 °C, i.e., at conditions that are employed in conventional pasteurization. Inoculated juices were treated at different power levels (600 W, 720 W) and treatment times (5s, 10s, 15s, 20s, 25s). Time-temperature profiles were obtained by fiber-optic sensors in contact with the samples allowing continuous data collection. The log-logistic and Arrhenius equations were used to account for the influence of the temperature histo...
Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
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Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
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Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
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Source: Tropical Animal Health and Production - Category: Veterinary Research Source Type: research
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Source: Materials Chemistry and Physics - Category: Materials Science Source Type: research
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