Category Archives: Aflatoxin B1

RASFF Alert – Aflatoxins – Pistachios – Maize – Peanuts – Dried Figs – Marsala Spice Mix

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Presence of aflatoxins above legal limits in shelled pistachios from United States via Romania in Italy

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Aflatoxin B1 in maize from France in the Netherlands

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Aflatoxins above the permited limit in peanuts from China in Spain

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Aflatoxins in dried figs from Turkey in Germany

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Presence of aflatoxins above legal limits in shelled pistachios from United States via Turkey in Italy

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Aflatoxins in pistachios from the United States, via Türkiye in Italy

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Level of aflatoxins exceeding limits in dried figs from Turkey in France

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Exceedance of maximum limits of aflatoxins in masala spice mix from Pakistan in France

Research – Inhibition of Aflatoxin Production by Citrinin and Non-Enzymatic Formation of a Novel Citrinin-Kojic Acid Adduct

MDPI

Abstract

Screening for microorganisms that inhibit aflatoxin production from environments showed that Penicillium citrinum inhibited aflatoxin production by Aspergillus parasiticus. The inhibitory substance in the culture medium of P. citrinum was confirmed to be citrinin (CTN). RT-PCR analyses showed that CTN did not inhibit expressions of aflatoxin biosynthetic genes (aflRpksL1, and fas-1) of A. parasiticus, whereas feeding experiments using A. parasiticus showed that CTN inhibited the in vivo conversion of dihydrosterigmatocystin to AFB2·AFG2. These results suggest that CTN inhibits a certain post-transcriptional step in aflatoxin biosynthesis. CTN in the culture medium of A. parasiticus was found to be decreased or lost with time, suggesting that a certain metabolite produced by A. parasiticus is the cause of the CTN decrease; we then purified, characterized, and then analyzed the substance. Physico-chemical analyses confirmed that the metabolite causing a decrease in CTN fluorescence was kojic acid (KA) and the resulting product was identified as a novel substance: (1R,3S,4R)-3,4-dihydro-6,8-dihydroxy-1-(3-hydroxy-6-(hydroxymethyl)-4-oxo-4H-pyran-2-yl)-3,4,5-trimethyl-1H-isochromene-7-carboxylic acid, which was named “CTN-KA adduct”. Our examination of the metabolites’ toxicities revealed that unlike CTN, the CTN-KA adduct did not inhibit aflatoxin production by A. parasiticus. These results indicate that CTN’s toxicity was alleviated with KA by converting CTN to the CTN-KA adduct.

Research – Emerging Method to Protect Food Crops from Carcinogenic Aflatoxins

Food Safety.Com

Researchers from the U.S. Department of Agriculture’s Agricultural Research Service (USDA’s ARS) are using a bioplastic coating to naturally shield seeds from Aspergillus, a type of fungi that produces aflatoxin. Exposure to aflatoxins is a food safety issue due to the compound’s carcinogenic and other harmful effects.

In the U.S., Southern agriculture is most affected by aflatoxins, as hot, dry conditions promote Aspergillus growth and aflatoxin production. Recent science has shown, however, that the Midwestern Corn Belt may be increasingly affected in the near future due to climate change. Corn is highly susceptible to aflatoxin contamination, as are seeds, nuts, feed, stored grain, and other important crops.

The new method for mitigating aflatoxin contamination of crops involves coating seeds with a protective, innocuous strain of Aspergillus, delivered via a mixture of biodegradable, corn starch-based bioplastic and biochar. The competitive Aspergillus strain found in the coating prevents aflatoxin-producing Aspergillus from infecting the seed, and other components of the mixture create a physical barrier that prevents contamination.  

Research – Evaluation of the dietary exposure of the Catalan population to mycotoxins of the genus Fusarium

ACSA

Within the framework of total diet studies, the Catalan Food Safety Agency (ACSA) publishes a second study on the evaluation of mycotoxins: “Evaluation of the dietary exposure of the Catalan population to mycotoxins of the genus Fusarium”.

In 2014, a first study was published in which the presence of the main mycotoxins in food intended for human consumption in the Catalan market was determined, and the intake of food linked to this contamination to estimate the food exposure of the population residing in Catalonia, and evaluate the risk to health (ACSA, 2014). Considering the results obtained, the ACSA considered it necessary to carry out this second, more specific study on mycotoxins, evaluating those that were found most frequently in the foods of the Catalan market, the mycotoxins of the genus Fusarium, and also taking into account the most exposed population groups.

The present study shows that the mycotoxins detected with greater frequency were DON and ENNB followed, with a much lower frequency, by mycotoxin T-2 and mycotoxins FB1 and DON-3G. The rest of mycotoxins analyzed (3-ADON, 15-ADON, NIV, FUS-X, zearalenone, HT-2, FB2 and FB3) will always present levels below the detection limit.

All the age groups evaluated have an exposure to DON and ENNB lower than the respective safety values. The average exposure of the adult population and children in Catalonia to the mycotoxin DON presents values ​​between 7.5% and 10.1% of the safety value. The average exposure of the population to ENNB presents values ​​​​that are two orders of magnitude lower than the extrapolated safety values.

Total diet studies make it possible to better understand the reality linked to the main chemical pollutants that reach the Catalan market, and in this way specific decisions can be made to correct possible risk situations for the health of consumers.

RASFF Alert – Animal Feed – Aflatoxin – Corn Gluten

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Aflatoxin B1 in corn gluten from Austria in Germany and Switzerland

Research – Alltech: Testing of corn and forage in Europe indicates moderate to high mycotoxin risk for dairy cows.

Feed Navigator

In all regions of Europe, grass and corn silage samples contained levels of mycotoxins that would be deemed higher risk for use in dairy production, finds the Alltech 2022 European Harvest Analysis.

Research – From Aflatoxin to Zearalenone: Mycotoxins You Should Know – Deoxynivalenol (DON)

Agfax

Mycotoxins are substances produced by fungi that infect grain crops like maize and small grains and cause ear and kernel rots. Exposure to mycotoxins can lead to chronic or acute toxicity in humans and animals. In addition, mycotoxins can lead to market losses, discounts, rejection of grain lots at elevators, and a reduction in livestock efficiency and productivity.

The most economically important mycotoxins include aflatoxins (AF), deoxynivalenol (DON, also known as vomitoxin), fumonisins (FUM), zearalenone (ZEA), ochratoxin A (OTA), T2, HT-2, ergot alkaloids, and patulin (PAT). The fungal species that produce mycotoxins have worldwide distribution; therefore, mycotoxin contamination occurs everywhere grain crops are grown. Accordingly, mycotoxins have been detected in feed, silage, food, and beverages derived from cereal grains and animal products exposed to contaminated feed.

RAFF Alerts – Aflatoxin – Groundnuts – Pistachios Grains – Dried Figs from Turkey – Peanuts – Sweet Almonds – Halva with Pistachios – Almond Powder – Hazelnuts

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Aflatoxin in Argentine groundnuts in the Netherlands

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presence of aflatoxin B1 and total aflatoxins in pistachio grains from Italy in Germany

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Presence of aflatoxins above legal limits in hazelnuts from Georgia in Germany and Italy

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Aflatoxins in dried figs from Turkey in Germany

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Aflatoxins in dried figs from Turkey in Sweden

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Aflatoxins in dried figs from Turkey in Sweden

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aflatoxin in dried figs from Turkey in Italy

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Aflatoxins in halva with pistachios from Turkey in Denmark, France and Germany

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Aflatoxins in peanuts from Turkey in Portugal

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Presence of aflatoxin (B1 and sum) higher than the legal limits in sweet almonds from the United States in Italy

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Aflatoxins in halva with pistachios from Turkey in Denmark, France and Germany

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aflatoxin in dried figs from Turkey in Italy

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aflatoxins in almond powder from Italy with raw material from Spain

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Presence of aflatoxins above legal limits in hazelnuts from Georgia in Germany and Italy

 

Israel – Notice to consumers about the withdrawal from the shelves of the product “Hot Paprika” – Aflatoxin

GovIL

SM Castel Food Industries Ltd. informs the consumer public that due to an inspection by the food service at the Ministry of Health, higher than permitted levels of aflatoxins (mold toxins) were found in the product “Hot Paprika”

RASFF Alerts – Aflatoxin – Pistachios – Groundnuts – Hazelnuts

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Aflatoxins in pistachios from USA via Turkey in Belgium and Romania

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Aflatoxin in USA groundnuts in the Netherlands

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Aflatoxins in hazelnuts from Azerbaijan in Germany and Italy

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Exceeding the maximum level of aflatoxin B1 and the sum of aflatoxins B1+B2+G1+G2 and the high level of ochratoxin A in pistachios from Iran via Spain in Poland

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Aflatoxin in Groundnuts from Argentina in the Netherlands