Research

This study evaluated the efficacy of antimycotics (sorbate, propionate and benzoate) to control the growth of L. monocytogenes in uncured turkey and cured bologna. The addition of 0.1% combined antimycotic agents effectively delayed or prevented growth of L. monocytogenes in cured processed meat.

The research determined that surface treatment using monocaprylin with acetic acid was effective in reducing Listeria monocytogenes on frankfurters. As an ingredient added to the product, monocaprylin was only moderately effective.

This research evaluated the extent to which levulinate, a 5-carbon organic acid, inhibited growth of Listeria monocytogenes in ready-to-eat meat products as compared to, and in combination with, lactate and diacetate.

This study evaluated the survival of Listeria monocytogenes in brine solutions containing chlorine dioxide.

This study determined the microbial risk associated with condensation and identify controllable risk factors associated with its formation. The risk factors of condensation in processing environments where both fresh and ready-to-eat products are produced was examined.

This project identified the minimum level of sodium nitrite required to suppress growth of L. monocytogenes in ready-to-eat meat and poultry products manufactured with lactate and diacetate.

This study identified food dyes that were able to show contamination on the deli slicer. Research evaluated the reduction of contamination using current cleaning and sanitizing methods. Best practice and employee training materials were also developed.

This project assessed if levulinic acid, as a topical treatment, was effective against pathogenic bacteria. It evaluated whether topical application imparts residual protection against pathogen growth. This research was a follow up to previous research on the anti-listerial action of levulinate.

The study identified ingredients to suppress growth of Listeria monocytogenes in ready-to-eat (RTE), deli-style, meat and poultry products that meet “natural” or organic requirements defined by USDA.

This research used animal models to develop dose response information for human listeriosis risk assessment modeling. It gathered information on the low dose region of the dose response curve and attempt to identify mechanisms by which L. monocytogenes causes illness and death.