Logo

Screening for pathogenic microorganisms in food

The Tentamus Agriparadigma Laboratory in Syracuse is further developing rapid screening methods for the search of pathogens such as Salmonella spp., Listeria spp. and monocytogenes

5613656967 ba090816d8 cTransmission to humans may occur through the ingestion of contaminated food. (Image source: NIAID/Flickr)

According to the 2017 Annual Report on the Rapid Alert System on Food and Feed (RASFF), Salmonella is the most important pathogen in the list of European food and feed alerts. It is an extremely widespread enterobacteriaceae, which is responsible for both human and animal gastrointestinal infections. Its treatment is complex as there are more than 2,600 existing Salmonella serovariants (Salmonella Typhimurium, Enteritidis, Infantis, etc.). Transmission to humans may occur through the ingestion of contaminated food.

However, European alerts are not just about Salmonella. The European Food Safety Authority (EFSA) has issued a number of publications on infectious outbreaks of Listeria monocytogenes, which have caused many listeriosis events in different European countries since 2015. Listeria monocytogenes is a bacterium that is widely present in the environment and causes foodborne infection through ingestion of contaminated food.

To perform the screening of these pathogens, the laboratory has developed and accredited official methods, such as:

-UNI EN ISO 11290-1:2017

-UNI EN ISO 11290-2:2017

-UNI EN ISO 6579-1:2020

-Rapid methods such as AFNOR BRD 07/11-12/05 and AFNOR BRD 07/04-09/98

Official methods UNI EN ISO 11290-1:2017, UNI EN ISO 11290-2:2017 and UNI EN ISO 6579-1:2020 require the use of nutrient-rich pre-enrichment media. High levels of nutrients, especially for qualitative methods based on absence/presence screening, facilitate the development of the above-mentioned pathogens, allowing them to be identified in all foods where they are present – but at low levels of contamination.

In well-defined time and temperature conditions, the parallel use of at least two chromogenic media allows the first screening to be carried out to determine any possible negative results of the analysis. If the results are not negative, these methods involve numerous confirmation tests to validate the presence of pathogens, such as sugar fermentation, Gram-Hucker staining, microscopic morphological analysis, catalase, oxidase and haemolytic activity verification.

Through the use of highly selective media and specific initial supplements in the pre-enrichment phase, the AFNOR BRD 07/11-12/05 and AFNOR BRD 07/04-09/98 rapid methods allow a clear chromogenic identification of the pathogenic microorganisms.

-Results can be reported in just 48 hours if they are negative.

-The association with confirmation tests, such as agglutination and sugar fermentation, also allows to complete screening tests in 3-4 working days in case these are positive for - Listeria spp., monocytogenes and Salmonella spp.

The laboratory has carried out all performance checks for the above methods in accordance with ISO19036: 2020.


LATEST NEWS IN Poultry

3 million households in Zimbabawe to receive poultry chicks

3 million households in Zimbabawe to rec…

The revamped Presidential Rural Poultry Scheme in Zimbabwe will see as many as 3 million households receiving 10 indigenous poultry chicks each, as part of a targeted empowerment programme

Optimal ventilation vitally important in broiler farms

Optimal ventilation vitally important in…

Broiler farms need to prioritise maintenance of ventilation systems to ensure healthy and productive livestock as well as avoid unexpected costs, according to experts at one of the leading ventilation...

INDICAL BIOSCIENCE partners with Evonik for innovation in monitoring poultry health

INDICAL BIOSCIENCE partners with Evonik …

INDICAL BIOSCIENCE, part of the Vimian Group, announced a partnership with Evonik to develop and expand precision monitoring solutions in poultry through the ScreenFloX service

European Trade Commission approves imports of Moroccan poultry

European Trade Commission approves impor…

Through an amendment legislation, the European Trade Commission has placed Morocco on the list of countries authorised to export poultry products to EU member countries 

Namibia mulls developing poultry sector standards

Namibia mulls developing poultry sector …

Namibia is planning to develop poultry industry standards to boost growth in the sector, an official said

South Africa trade alliance demands removal of taxes on chicken

South Africa trade alliance demands remo…

The South African Informal Traders Alliance (SAITA) has asked the government to do away with tariff taxes and VAT on chicken products

Prev Next

OTHER RELATED ARTICLES - Poultry

Ecobiol can ameliorate the negative impact of broilers’ enteric pathogen challenge

Ecobiol can ameliorate the negative impa…

Evonik carried out research to investigate the effect of B. amyloliquefaciens CECT 5940 (Ecobiol) to ameliorate the negative impact of necrotic enteritis challenge caused by Clostridium perfringens

Maximising phytase performance

Maximising phytase performance

Calcium plays a significant role in phosphorus (P) utilisation, which is important for broiler production performance. Therefore, optimising available calcium levels, relative to phosphorus, can contribute to better diet results....

Highly committed to caring for the environment: Celplast

Highly committed to caring for the envir…

Founded in Vigonza, near Padua, in 1981 as a small workshop for the production of packaging, Celplast has been known for its strong innovative spirit and is recognised as one...

Poultry demands fuel CBH's rise in revenues

Poultry demands fuel CBH's rise in reven…

Agricultural group Country Bird Holdings (CBH) has reported a rise in revenue of nine per cent to R3bn (US$343.8mn) for the year, up from R2.8bn (US$320.9mn) in 2011, in its...

Fact.MR launches report on animal feed probiotics market

Fact.MR launches report on animal feed p…

Flourishing livestock and animal industry has catalysed demand for animal feed probiotics

Big bonuses from cycle hatching

Big bonuses from cycle hatching

Existing chicken incubators, especially low cost and older models, use the same egg tray through the 18 day Setting Phase, as well as through the final three days...

South Africa trade alliance demands removal of taxes on chicken

South Africa trade alliance demands remo…

The South African Informal Traders Alliance (SAITA) has asked the government to do away with tariff taxes and VAT on chicken products

Nutriad presents new poultry gut health research data

Nutriad presents new poultry gut health …

Multinational feed additives producer Nutriad continues to strengthen its position as an innovator and leader in research on natural digestive performance additives

South African poultry company expands into East Africa

South African poultry company expands in…

South Africa-based RCL Foods has announced that it will buy 33.5 per cent stake in Ugandan poultry producer, Hudani Manji Holdings Limited (HMH)

Fuming about pests

Fuming about pests

African Farming spoke with Octavius Hunt, UK -based manufacturer of smoke generators that provide effective solutions for pest and disease management

Nutreco to invest in Ghanaian poultry

Nutreco to invest in Ghanaian poultry

Global animal nutrition and feed company, Nutreco, has shown interest in investing in Ghana’s poultry industry

Ghana’s poultry industry to benefit from USDA help

Ghana’s poultry industry to benefit from…

The US Department of Agriculture (USDA) has teamed up with other organisations to implement a poultry development project in Ghana

Prev Next

Template Design © Joomla Templates | GavickPro. All rights reserved.