title: Use ofRhodomyrtus tomentosaethanolic leaf extract for the bio-control ofListeria monocytogenespost-cooking contamination in cooked chicken meat.
abstract: Controlling foodborne pathogen in ready-to-eat food is important in food safety. The present study accessed the potential use ofRhodomyrtus tomentosaethanolic leaf extract as a bio-control agent againstListeria monocytogenesin cooked chicken meat model system. The antilisterial activity of the plant extract was better under microwave condition and enhanced as storage temperature increased from 4 to 37 °C. The extract could reduceL. monocytogenesnumbers at low (104CFU/g) and high (106CFU/g) inoculum levels in cooked chicken by both rinse and injection application methods. A 5 min rinse in 8% w/vR. tomentosaextract reduced the bacterial number by ≥2-log before storage and ≥3-log after storage at 4 °C for 5 days. Injection with 0.4% w/wR. tomentosaextract resulted in approximately 2-log reduction in the cell numbers both before and after storage at 4 °C for 5 days. Five minutes rinse in the extract bath demonstrated better sensory preferences which were not significantly different from the control. Addition of black pepper powder to the extract rinsed samples improved odour but not appearance, colour, and texture preferences.Rhodomyrtus tomentosaextract was significantly effective for the bio-control ofL. monocytogenescontaminations in cooked chicken meat model. The extract was observed as a potent bio-additive agent to control contaminations fromL. monocytogenesand ensure safety in ready-to-eat meat.
authors.affiliation: Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90112 Thailand ; Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90112 Thailand.
authors.forename: Grace Fiyinfoluwa
authors.initials: GF
authors.lastname: Odedina
authors.affiliation: Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, 90112 Thailand.
authors.forename: Kitiya
authors.initials: K
authors.lastname: Vongkamjan
authors.affiliation: Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90112 Thailand ; Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90112 Thailand.
authors.forename: Supayang Piyawan
authors.initials: SP
authors.lastname: Voravuthikunchai
keywords: Bio-control; Listeria monocytogenes; Ready-to-eat; Rhodomyrtus tomentosa; Thermal stability