Category Archives: Food Microbiology Blog

Research – Recent Trends in Active Packaging Using Nanotechnology to Inhibit Oxidation and Microbiological Growth in Muscle Foods

MDPI

Muscle foods are highly perishable products that require the use of additives to inhibit lipid and protein oxidation and/or the growth of spoilage and pathogenic microorganisms. The reduction or replacement of additives used in the food industry is a current trend that requires the support of active-packaging technology to overcome novel challenges in muscle-food preservation. Several nano-sized active substances incorporated in the polymeric matrix of muscle-food packaging were discussed (nanocarriers and nanoparticles of essential oils, metal oxide, extracts, enzymes, bioactive peptides, surfactants, and bacteriophages). In addition, the extension of the shelf life and the inhibitory effects of oxidation and microbial growth obtained during storage were also extensively revised. The use of active packaging in muscle foods to inhibit oxidation and microbial growth is an alternative in the development of clean-label meat and meat products. Although the studies presented serve as a basis for future research, it is important to emphasize the importance of carrying out detailed studies of the possible migration of potentially toxic additives, incorporated in active packaging developed for muscle foods under different storage conditions.

Research – Fate of Planktonic and Biofilm-Derived Listeria monocytogenes on Unwaxed Apples during Air and Controlled Atmosphere Storage

MDPI

Abstract

Multiple recalls and outbreaks involving Listeria monocytogenes-contaminated apples have been linked to the post-harvest packing environment where this pathogen can persist in biofilms. Therefore, this study assessed L. monocytogenes survival on apples as affected by harvest year, apple cultivar, storage atmosphere, and growth conditions. Unwaxed Gala, Granny Smith, and Honeycrisp apples were dip-inoculated in an 8-strain L. monocytogenes cocktail of planktonic- or biofilm-grown cells (~6.5 log CFU/mL), dried, and then examined for numbers of L. monocytogenes during air or controlled atmosphere (CA) (1.5% O2, 1.5% CO2) storage at 2 °C. After 90 days, air or CA storage yielded similar L. monocytogenes survival (p > 0.05), regardless of harvest year. Populations gradually decreased with L. monocytogenes quantifiable in most samples after 7 months. Apple cultivar significantly impacted L. monocytogenes survival (p < 0.05) during both harvest years with greater reductions (p < 0.05) seen on Gala compared to Granny Smith and Honeycrisp. Biofilm-derived cells survived longer (p < 0.05) on L. monocytogenes-inoculated Gala and Honeycrisp apples compared to cells grown planktonically. These findings should aid in the development of improved L. monocytogenes intervention strategies for apple growers and packers.

USA – Ham sold at Costco recalled over Listeria contamination

Food Safety News

Sunnyvalley Smoked Meats Inc. is recalling Kirkland Signature Master Carve Half Ham, Natural Juices Boneless Smoked Half Ham sold at Costco stores because of potential Listeria contamination.

The recalled product was available for purchase Sept. 26-29, 2023.

The recalled product was sold at Costco stores in Northern California, the Bay Area and in western Nevada.

Recalled product:

#46655 Kirkland Signature Master Carve Half Ham, Natural Juices Boneless Smoked Half Ham

  • Use / Freeze by Jan 20, 24
  • Lot # 264 – 4 sticker.

In a letter sent to Costco members, those who purchased the items are asked to “not eat any remaining product marked with the above code date; return the item to your local Costco for a full refund.”

Sweden – Norovirus behind most outbreaks and illnesses in Sweden

Food Safety News

Food Borne Illness - Norovirus -CDC Photo

Norovirus caused the most outbreaks and illnesses in 2022, according to the Swedish Food Agency (Livsmedelsverket).

Overall, there were 337 reports of suspected or confirmed foodborne illnesses to the agency with 2,261 cases of illness. In 303 events, two or more people were infected from the same source. This is up from 251 outbreaks with 1,467 patients in 2021.

In 2022, the number of food poisonings returned to the level seen before the COVID-19 pandemic. The increase in outbreaks and illnesses began in late 2021, when several restrictions imposed during the pandemic were lifted.

The number of incidents peaked during the last six months of 2022. This was because of four large outbreaks with more than 100 patients during September and December.

USA – Marco’s Italian Restaurant linked to Hepatitis A scare

Food Poison Journal

The Maine Center for Disease Control and Prevention (Maine CDC) has identified a case of hepatitis A in a Lewiston food service worker. Hepatitis A is a contagious liver disease caused by the hepatitis A virus. It can spread through person-to-person contact or by consuming contaminated food or water.

The individual worked during their infectious period at Marco’s Italian Restaurant, 12 Mollison Way in Lewiston on the following dates: September 11, 13, 15–16, 18, 20-22, 25, and 27-28, 2023. Anyone who purchased and/or ate food or drink from this restaurant during these days could be at risk for hepatitis A infection. An infected person can spread the virus to others from about two weeks before symptom onset until one week after symptoms begin.

Belgium – “Pennywafels” from the Jumbo brand – Salmonella

AFSCA

Recall of Jumbo
Product: “Pennywafels” from the Jumbo brand
Nature of the problem: possible presence of Salmonella.

In agreement with the FASFC, Jumbo is withdrawing the product “Pennywafels” from the Jumbo brand – with DDM 01-06-2024 – and recalling it from consumers due to the possible presence of Salmonella.

Jumbo asks its customers not to consume this product and to return it to the point of sale where it was purchased, where they will be refunded.

Product description Product

name: Jumbo Pennywafels
Brand: Jumbo
EAN on the label: 8718452584406
Expiry date (Best before): 01-06-2024
Batch numbers: 3261 / 3264 and 3268
Sale period: from 19-09-2023 as of 04-10-2023
Nature of packaging: plastic packaging
Weight: 150 g

The product was sold via Jumbo subsidiaries in Belgium.

For more information , customers can contact customer service at 0800 – 98998 or Jumbo.com. Our apologies for any inconvenience caused.

Netherlands – Helwa Penny waffles – Salmonella

NVWA

Safety warning Helwa Penny waffles (alert)

Various supermarkets warn against Helwa Penny Waffles. The bacterium Salmonella may be present in Helwa Penny Waffles. Eating it can pose a health risk, especially in pregnant women, young children, the elderly and people with a weakened immune system. Do not eat the product.
See the NVWA website . This contains links to the safety warnings of the relevant supermarkets.

Which product is it?

Vomar

  • Helwa Penny Waffles
  • Production code:  3261/3262/3263
  • Barcode: 8710476806069
  • Best before (THT): 01-06-2024

Nettorama

  • Helwa Penny waffles 150 grams
  • Production code: 3262
  • Best before (THT): 01-06-2024

Hoogvliet

  • Helwa Penny Waffles 
  • Production code: 3261
  • Barcode: 8712200945761
  • Best before (THT): 01-06-2024

Coop

  • Helwa Penny waffles 150 grams
  • Production code: 3263
  • Barcode: 8710476806069
  • Best before (THT): 01-06-2024

Yours sincerely

The Dutch Food and Consumer Product Safety Authority

Australia – Voyager Estate Sparkling Red Grape Juice and Voyager Estate Sparkling White Grape Juice – Secondary Fermentation

FSANZ

Update published: 6/10/2023

Product information

Voyager Estate is conducting a recall of Voyager Estate Sparkling Red Grape Juice 300ml and Voyager Estate Sparkling White Grape Juice 300ml. The product has been available for sale at Voyager Estate in WA and online nationally.

Date markings

Best Before: Oct 2024

Sparkling Grape Juice
​Problem

The recall is due to unintended fermentation in bottle causing over pressurising and failure of the cap seal.

Food safety hazard

Food products containing excess carbonation may cause illness/injury if consumed.

Country of origin

Australia

What to do​

Consumers should not drink or open this product and should dispose of it safely. Please contact Voyager Estate for safe disposal instructions and to arrange for reimbursement.

For further information please contact:
Voyager Estate
08 9757 6354

Canada – Fresh Start Foods brand Cantaloupe recalled due to Salmonella

CFIA

Cantaloupe
Issue
Food – Microbial Contamination – Salmonella
What to do

Do not use, sell, serve or distribute the affected product.

Audience
Retail
Distribution
Alberta
British Columbia

Fresh Start Foods brand Cantaloupe recalled due to Salmonella.

Canada – Kandy brand Cantaloupe recalled due to Salmonella

CFIA

Product
Cantaloupe
Issue
Food – Microbial Contamination – Salmonella
What to do

Do not use, sell, serve or distribute the affected product.

Audience
Hotels, restaurants and institutions
Distribution
British Columbia
Manitoba
Ontario
Saskatchewan

Kandy brand Cantaloupe recalled due to Salmonella.