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Growth of Listeria monocytogenes in partially cooked chicken nuggets as effected by storage temperature

A study conducted by scientists from the Agricultural University of Athens, the University of Patras in Greece and North Carolina State University and published in Foods 2021, 10(3), 533 studied the growth of Listeria monocytogenes in chicken nuggets. Battered poultry products, such as chicken nuggets may be wrongly regarded as ready-to-eat. Commercially prepared chicken breast nuggets were inoculated with L. monocytogenes and stored at different isothermal conditions (4, 8, 12, and 16 °C). The study found that uncooked, frozen, commercially prepared chicken nuggets could potentially promote Listeria growth over the course of their shelf life.  L. monocytogenes may grow in battered chicken nuggets to levels potentially hazardous even under well-controlled refrigerated storage conditions. @ https://www.mdpi.com/2304-8158/10/3/533

 

Growth of Listeria monocytogenes in Partially Cooked Battered Chicken Nuggets as a Function of Storage Temperature

Battered poultry products may be wrongly regarded and treated by consumers as ready-to-eat and, as such, be implicated in foodborne disease outbreaks. This study aimed at the quantitative description of the growth behavior of Listeria monocytogenes in fresh, partially cooked (non-ready-to-eat) battered chicken nuggets as function of temperature. Commercially prepared chicken breast nuggets were inoculated with L. monocytogenes and stored at different isothermal conditions (4, 8, 12, and 16 °C). The pathogen’s growth behavior was characterized via a two-step predictive modelling approach: estimation of growth kinetic parameters using a primary model, and description of the effect of temperature on the estimated maximum specific growth rate (μmax) using a secondary model. Model evaluation was undertaken using independent growth data under both constant and dynamic temperature conditions. According to the findings of this study, L. monocytogenes may proliferate in battered chicken nuggets in the course of their shelf life to levels potentially hazardous for susceptible population groups, even under well-controlled refrigerated storage conditions. Model evaluation demonstrated a satisfactory performance, where the estimated bias factor (Bf) was 0.92 and 1.08 under constant and dynamic temperature conditions, respectively, while the accuracy factor (Af) value was 1.08, in both cases. The collected data should be useful in model development and quantitative microbiological risk assessment in battered poultry products.

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Update on Listeria monocytogenes in Hispanic-style fresh and soft cheeses

The FDA announced on 3/9/2021 that it received confirmation that the cheeses were also distributed in Rhode Island. The states with confirmed distribution now include AL, CT, FL, GA, IA, IL, IN, KS, KY, MA, MD, MI, MN, MO, MS, NC, NJ, NY, NE, OH, PA, RI, SC, TN, VA, and WI. Recalled brands by cheese type include: Queso Fresco: El Abuelito, Rio Grande, Rio Lindo; Quesillo: El Abuelito, El Viejito, El Paisano, El Sabrosito, La Cima, Quesos Finos, San Carlos, Ideal Brands; Requeson: El Abuelito, El Viejito. Some of the cheeses were sold in bulk quantities and could have been repackaged by retailers. There have been a total of 11 Illnesses, 10 hospitalizations, and 1 death. States with Cases: CT (1), MD (4), NY (4), and VA (2). @ https://www.fda.gov/food/outbreaks-foodborne-illness/outbreak-investigation-listeria-monocytogenes-hispanic-style-fresh-and-soft-cheeses-february-2021?utm_medium=email&utm_source=govdelivery

Do not eat, sell, or serve recalled Queso Fresco, Quesillo (Oaxaca, string cheese) or Requeson (ricotta) cheeses.

Mediterranean Food recalls “Alqosh Sesame Oil” due to Salmonella

The FDA announced that Mediterranean Food Inc.(Warren, MI) recalled 2Lb plastic jars of “Alqosh Sesame Oil” because they can be contaminated with Salmonella.  The recalled, “Sesame Oil” were distributed in Michigan retail stores and distributors through their company’s staff. The product was distributed in the period from 11/06/2020 to 12/10/2020. The product comes in a 2Lb, clear plastic jar marked with lot # 16082020 on the jar’s side and with a Production date of 08/16/2020 stamped on the side. No illnesses have been reported to date in connection with this problem. The potential for contamination was noted after routine testing by the Michigan Department of Agriculture and Rural Development (MDARD) at one of the retailers that sold the product to which revealed Salmonella’s presence in some of the 2 Lb plastic jars of “Sesame Oil.” Production of the product has been suspended while the FDA and the company continue investigating the source of the problem. @ https://www.fda.gov/safety/recalls-market-withdrawals-safety-alerts/mediterranean-food-inc-recalls-alqosh-sesame-oil-because-possible-health-risk?utm_medium=email&utm_source=govdelivery

Mediterranean Food Inc. of Warren, MI, is recalling its 2Lb plastic jar of “Alqosh Sesame Oil” because they have the potential to be contaminated with Salmonella, an organism which can cause serious and sometimes fatal infections in young children, frail or elderly people, and others with weakened i