UV-C Irradiation of Rolled Fillets of Ham Inoculated with Yersinia enterocolitica and Brochothrix thermosphacta

End Products of Glucose Fermentation by Brochothrix thermosphacta.

Anaerobically, Brochothrix thermosphacta fermented glucose primarily to l-lactate, acetate, formate, and ethanol. The ratio of these end products varied with growth conditions. Both the presence of acetate and formate and a pH below about 6 increased l-lactate production from glucose. Small amounts of butane-2,3-diol were also produced when the pH of the culture was low (</=5.5) or when acetate...

Yersinia enterocolitica.

Characteristics of the disease Infectious dose is 10–100 organisms Incubation period is 1⁄2–4 (usually 1–3) days; up to a week for S. dysenteriae 1 Illness: diarrhea with fever and nausea; sometimes toxemia, vomiting, cramps, and tenesmus; dysentery—blood and mucus in stools; may cause hemolytic uremic syndrome; most severe in infants; mild and asymptomatic infections occur Duration: 4–7 days; ...

Fecal excretion of Yersinia enterocolitica in mice and rats inoculated intragastrically.

Reduction of Brochothrix thermosphacta on beef surfaces following immobilization of nisin in calcium alginate gels.

Lean and adipose beef carcass tissues inoculated with Brochothrix thermosphacta (BT) (approx. 4.50 log10 cfu cm-2) were left untreated (U) or treated with 100 micrograms ml-1 nisin (N), calcium alginate (A) or 100 micrograms ml-1 nisin immobilized in a calcium alginate gel (AN). Tissue samples were refrigerated after treatments and bacterial populations and nisin activity were determined at 0, ...

Growth of Brochothrix thermosphacta in ground beef following treatments with nisin in calcium alginate gels

Sterilized, lean and adipose beef carcass tissues were inoculated with Brochothrix thermosphacta, left untreated (U), or treated with 100 μg/ml nisin (N), calcium alginate (A), or 100 μg/ml nisin immobilized in a calcium alginate gel (AN). Treated tissues were aseptically processed into ground beef and populations of B. thermosphacta and nisin activity were determined during refrigerated storag...