How does fungi infection look on Brazilian nuts?

How does fungi infection look on Brazilian nuts? - Serious young male wearing casual shirt and respirator standing against gray wall and looking at camera

I have recently read that Brazilian nuts can be attacked by Aspergillus fungi producing mycotoxins, for example aflatoxins. Does anyone know or saw what infected nuts look like? There are a lot of white coats on nuts I use to buy - should I worry these can be infected?

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Quick Answer about "How does fungi infection look on Brazilian nuts?"

Mold would be fuzzy. That looks more like physical damage to the nut, but it's extremely difficult to see texture in a photo. Try cracking it with a nutcracker or some way other than cutting it, so you get a rough surface.

How do I know if my Brazil nuts have mold?

Changes in Color and Mold: It is rare for Brazil nuts to go moldy, but it does happen. You will know they have gone moldy if the surface has rotten black spots, fuzz, or green or white specs.

Do Brazil nuts have fungus?

Although there are beneficial nutritional properties, the prevailing mycobiota of Brazil nuts include fungi that are producers of aflatoxins, such as Aspergillus flavus, A. parasiticus and A. nomius.

What are the white spots on Brazil nuts?

What is this? Visual changes. If there are any specks of mold, white fuzz, or black spots on the surface of the nut, it's done for. If the skin is wrinkled and the nutmeat dried out, it's up to you if you want to eat or discard such nuts.

How do you remove mold from nuts?

Here is what researchers suggest:
  • Soaking in a 0.1 M solution of water and sodium carbonate for 24-72 hours (the gold standard)
  • A simple water rinse is effective at reducing a good amount of mold spores.




  • Brazil nuts being screened for fungal infections at Impresa Tauhumanu under UV light




    Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

    Images: Sharon Snider, Artem Podrez, RF._.studio, Artem Podrez