If you’ve noticed a black, powdery substance on onions—specially across the dry outer layers or near the roots—it’s maximum in all likelihood a innocent mold referred to as Aspergillus niger. This commonplace fungus flourishes in heat, humid storage conditions and is known to appear on onions, garlic, and even some fruits.
Is it dangerous?
Typically, Aspergillus niger isn't always harmful when determined at the dry outer skin of onions. It does no longer generally penetrate the internal edible layers. But, individuals with mildew allergies or compromised immune systems need to avoid coping with or eating moldy produce.
How does it appear?
Bad ventilation, excessive moisture, or storing onions in plastic baggage can lure humidity and create the correct surroundings for mould growth. onions with damaged skins are extra inclined.
What must you do?
Check out carefully – If the mold is handiest on the dry outer layers and the internal flesh is company and smooth, you could safely peel away the affected layers and use the onion.
Discard if tender or stinky – If the onion feels delicate, smells sour, or suggests mold interior, it’s nice to throw it out.
Wash palms and surfaces – After handling moldy onions, wash your fingers and smooth any surfaces they touched.
Prevention tips:
Save onions in a cool, dry, and properly-ventilated place. Avoid sealing them in plastic baggage or storing them inside the fridge for long durations.
In summary, the black powder is usually mold and no longer inherently risky, but proper inspection and hygiene are key.
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