Etikett: listeria

Ny software kan forudse listeria i oste

Med støtte fra mejeriindustrien er forskere fra DTU Fødevareinstituttet nu tæt på at kunne udstyre mejerierne med software, der kan beregne risikoen for vækst af listeria i flere typer af oste, skriver mejeri.dk.

Det igangværende forskningsprojekt har navnet Dairy-Predict, og når det afsluttes i 2019, bliver et af resultaterne en ny software, som mejerierne kan bruge til at beregne kombinationen af produktegenskaber i oste, som forhindrer vækst af listeria. Mejerierne får altså et redskab, der kan bidrage til høj fødevaresikkerhed for flere typer af oste.

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Listeria in cheese; recalls by Sargento, Meijer, others

Routine, random testing by Tennessee food inspectors found Listeria monocytogenes in colby cheese and has triggered recalls of a variety of Sargento, Meijer and Amish Classics cheese products.

No illnesses had been reported to Tennessee officials or Michigan-based grocery chain Meijer, according to a state alert and a recall notice posted Thursday and Friday, respectively. However, it can take up to 70 days for symptoms of Listeria infection to develop following exposure to the bacteria.

“Listeria monocytogenes is unlike many other germs because it can grow in a cold environment,” according to the Tennessee alert. “Although healthy individuals may suffer only short-term symptoms such as high fever, severe headache, stiffness, nausea, abdominal pain and diarrhea, infection can cause miscarriages and stillbirths among pregnant women and may be fatal for individuals with weakened immune systems.”

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Müller Wiseman Dairies Recalls Cream

Müller Wiseman Dairies is recalling a batch of its 300ml pasteurised Double Cream as a precautionary measure due to low levels of Listeria monocytogenes having been detected in the product.

Listeria monocytogenes is a bacterium that can cause food poisoning, particularly among key vulnerable groups including pregnant women, unborn and newborn babies, those over 60 years old, and anyone with reduced immunity.

The affected batch constitutes 532 pots which have been distributed around Scotland and the North of England into convenience retailers and directly to consumers via doorstep delivery.

Scientist uses electric fields to kill listeria in milk

Tel Aviv University’s Dr Alexander Goldberg found that long term listeris monocytogenes proliferation control in milk by IDPEF (intermittently pulsed electric fields) has implications for food security in low income countries.

Pulsed electric fields delivered for just a fraction of a second destroy cells by damaging the cell membrane and kills bacteria as opposed to refrigeration, which merely slows the metabolism of bacteria.

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