Research – Effect of Packaging and Temperature on Survival Kinetics of Campylobacter jejuni on Precooked Chicken Breast

Wiley Online Library imagesCAYZ5I84

The survival ability of Campylobacter jejuni in poultry has been a major public health risk because of the low infectious dose. The objective of this study was to investigate the effects of different packaging condition and temperature on the survival kinetics of C. jejuni ATCC 33291 on precooked chicken breast. Survival kinetics of C. jejuni were also compared with those of C. coli ATCC 43486. Inoculated chicken breasts with 5.0–6.0 log cfu/g were packed in three different ways (aerobic, semi-aerobic or vacuum), which were stored at 4, 10, 17, 24, 30 and 36C. Survival curves were fitted to Baranyi model to obtain the values of lag time and death rate of C. jejuni. During storage, the greatest reduction of C. jejuni (4.316 log cfu/g) was observed in aerobic packaged chicken breast at 24C, while the least reduction of C. jejuni (1.031 log cfu/g) was observed in vacuum-packaged chicken breast at 4C. Lag time was affected by packing method, temperature and strain. Similar survival behavior of C. coli to C. jejuni was observed only at 10C. At the temperatures above 24C, lag phase of C. jejuni was only observed in semi-aerobic or vacuum-packed chicken breasts, indicating that C. jejuni survived better than C. coli, for which no lag phase was observed. The results indicated that vacuum or semi-aerobic packaging on poultry product at 4C, which is the most popular method at retail markets, created the highest risk for C. jejuni survival.

USA – Reacall Tomato Salad Kits – Salmonella

Food Poisoning Journal

Taylor Farms is issuing a recall of some lots of tomatoes and salad kits that include them because they may be contaminated with Salmonella.

Taylor Farms of Tracy issued the voluntary recall Saturday night for Expo Fresh Roma tomatoes shipped to Costco locations in Los Angeles and Hawthorne in California, Tacoma and Lynwood in Washington, and Las Vegas in Nevada. Only tomatoes listed as packed on September 5 or September 6 are affected.

Australia – Another Cruise Ship – Norovirus

The West Australian Eurofins

Passengers aboard a cruise ship bound for Fremantle say more than 100 people were struck down by a particularly violent bout of gastroenteritis.

The Sea Princess, a 15-deck ship operated by Princess Cruises, left Fremantle for Singapore on August 18 and is due back on Saturday.

It missed several stops because of a mechanical issue but passengers have been compensated for the changes.

But the norovirus outbreak on the ship led one passenger to call it “the cruise from hell”.

 

Canada – CFIA Recalls – Salmonella- Chia Seeds – Flax Seeds – Spice

CFIA

Advantage Health Matters is recalling Organic Traditions brand Sprouted Chia & Flax Seed Powder from the marketplace due to possible Salmonella contamination. Consumers should not consume the recalled products described in the link above.

CFIA

Premier Ingredients is recalling Premier brand and Konrads.ca brand spice products from the marketplace due to possible Salmonella contamination. Consumers should not consume the recalled products described in the link above.

USA – Deadly E. coli Outbreak What’s the Source?

Food Poisoning Bulletin Entero

E.coli illnesses that have killed two children and left another hospitalized in serious condition have health authorities in the Pacific Northwest scrambling to find the source. At this point in the investigation, they believe two of the cases are linked but do not believe that there is a public health threat.

The two cases that are likely linked are Brad Sutton, 5, and his friend Serena Profitt, 4. Their families have been lifelong friends and spent the last two weekends of August together. During that time, the children swam in a pond fed by running irrigation water,shared a turkey sandwich at a restaurant and had exposure to a goat and other animals. All three are potential sources of the infection

 

UK – FSA – Inverawe Smokehouses recalls batches of its vacuum packed smoked trout due to concerns over its procedures in place to control Clostridium botulinum

FSA food_standards_agency_logo

The effectiveness of process controls that could potentially affect the safety of vacuum packed cold smoked trout produced by Inverawe Smokehouses, Taynuilt, Argyll, cannot be demonstrated satisfactorily. The issue relates to controlling factors to prevent the growth and toxin production of Clostridium botulinum. This may cause a serious form of food poisoning called botulism. Although no trace of Clostridium botulinum has been found in products tested, a recall from customers is being carried out as a precautionary measure.

The affected batches, with use by dates between 30 May 2014 and 1 September 2014, were sold through retailers. Mail order products are not affected. Although the potentially affected products will no longer be on sale, due to their date expiry, there is a possibility that consumers may still have this at home if they have frozen the product. The instructions for home freezing on the product labelling allow for storage of up to 3 months. Consumers are advised not to consume these products. Instead, the product should be returned to the store where it was purchased from or disposed of.

Research – How Easily Viruses Spread

The Independant Eurofins

A virus can spread around a whole building within two hours of coming into contact with just one surface, a new study has found.

A team at the University of Arizona, Tucson found that when a virus, for example the norovirus, contaminates a single doorknob or elevator button it spreads rapidly through entire office buildings, hotels or hospitals.

The team, led by microbiologist Charles Gerba, used bacteriophage MS-2 as a surrogate for the human norovirus because it is similar in shape, size and resistance to disinfectants