Black Coalish Thing In Orange

I recently found a piece of black substance in my Navel Orange. When I rubbed it against my finger, the blacked thing smeared on my finger like coal. It was less the 1 cm wide and kind of look like a jagged piece of gravel. Could anyone know what this could be?
Best Answer
If the substance was soft and smeared easily, as you describe, it was most likely mould - sometimes cells die in a part of the fruit, often through exterior damage, and these rapidly start to decompose. Left long enough, the whole fruit would have gone black. Harmless so long as you don't eat the section that's got black in it, and even if you consumed it, it's only a bit dodgy to eat for people who are mould sensitive.
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What is the black stuff in my orange?
Alternaria blotch on orange trees is also known as alternaria rot or black rot. It is caused by the pathogen Alternaria citri and is a non-toxic strain of fungus. Alternaria rot can be found on both lemons and oranges. The rot is softer on lemons but more pronounced on oranges, causing hard black spots on the peel.What is black stuff inside navel orange?
It's probably Alternaria alternata or Black Rot, a type of mold. The fungus penetrates the orange through cracks that develop after harvest or during growth if the tree suffered through drought, frost, or disease.Is it safe to eat oranges with black spots?
Answer: Fruit with dark-brown discoloration on the skin has been attacked by citrus rust mites. Citrus rust mites, too tiny to be seen with the naked eye, generally just damage the skin. Fruit will often ripen normally, perhaps smaller, with the pulp and juice still good to eat.Do oranges have little seeds?
Navel oranges, technically, are parthenocopic, which means they produce fruit without fertilisation, and that's why they are seedless. However, if the blossom is pollinated by a suitable donor, then seeds may form. These are usually, as you've discovered, vestigial seeds and may not even be fertile.Blood Orange - Charcoal Baby
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Answer 2
Sounds like some form of plant disease. I am not a gardener, so I can't tell you which one, but many plant diseases create tumors or change plant tissue in other unpleasant ways.
A few byproducts of plant diseases can be toxic to humans. I wouldn't eat the orange. It is unlikely that you will get any acute symptoms if you already did, but in the long term, it is best to avoid such contaminants.
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