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Hepatitis A virus inactivation in phosphate buffered saline, apple juice and coconut water by 254 nm and 279 nm ultraviolet light systems.
Food Microbiol
August 2025
Department of Food Science, University of Tennessee, Knoxville, TN, 37996, USA. Electronic address:
Novel ultraviolet light emitting diodes (UV-C LED at 279 nm) are being investigated for broad-spectrum antimicrobial activity in addition to traditional mercury-lamp 254 nm UV-C systems. The goals of this study were to determine the doses required for hepatitis A virus (a resilient foodborne virus) inactivation in phosphate buffered saline (PBS, pH = 7.2), apple juice (AJ, pH = 4), and coconut water (CW, pH = 5), when treated with traditional 254 nm UV-C compared to 279 nm UV-C LED.
View Article and Find Full Text PDFCharacterization of quorum quenching enzyme AiiA and its potential role in strawberry preservation.
Food Res Int
April 2025
Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu 610039, China. Electronic address:
Microbial spoilage in nutrient-rich strawberries has led to significant food waste and economic loss in the food industry. The quorum-quenching enzyme AiiA is believed to disrupt communication between cells by inactivating AHLs-based quorum sensing signals. Chitosan, a biopolymer derived from chitin, is widely used as a coating film to inhibit bacterial growth and prolong food shelf life.
View Article and Find Full Text PDFTrained immunity using probiotics and inactivated pathogens enhances resistance to Salmonella enterica serovar Typhimurium infection by activating the cGAS-STING signal pathway in mice and chickens.
J Adv Res
March 2025
MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu 210095, PR China.
Introduction: Concerns about antibiotic resistance have prompted interest in alternative strategies for enhancing disease resistance, particularly in livestock and poultry production.
Objectives: This study explored the role of trained immunity in enhancing resistance to Salmonella enterica serovar Typhimurium (S. Typhimurium) infection in mice and chickens.
Hortensin 4, main type 1 ribosome inactivating protein from red mountain spinach seeds: Structural characterization and biological action.
Int J Biol Macromol
March 2025
Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100 Caserta, Italy. Electronic address:
Here, we report the primary structure of hortensin 4, main type 1 ribosome inactivating protein (RIP) isolated from Atriplex hortensis seeds. The complete sequencing was achieved by a combination of mass spectrometry coupled with Edman degradation. The amino acid sequence of hortensin 4 matches with that of Atriplex patens type 1 RIP, deduced from the cDNA sequence (AC: ABJ90432.
View Article and Find Full Text PDFEffect of heating rate on thermal inactivation kinetics of Escherichia coli O157:H7 in ground beef.
Int J Food Microbiol
March 2025
U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Lane, Wyndmoor, PA 19038, USA.
The objective of this study was to investigate the effect of heating rate on thermal inactivation kinetics of microorganisms in food, testing the survival of Escherichia coli O157:H7 in ground beef during isothermal and dynamic heating. A 4-strain cocktail of E. coli O157:H7 was inoculated to irradiation-sterilized ground beef (10 % fat) and then subjected to isothermal heating (55-63 °C) and dynamic heating (20-63 °C).
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