what are these strands in my baked goods?

After my banana bread sits out for a few days I see web like strands when it’s broken apart. what is it??!

Niki Marcheggiani
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Tadors September 2, 2023
This looks like rope spoilage, and you should discard the banana bread.

Tadors September 2, 2023
I realize I’m replying more than 3 years later, so it’s very unlikely that you still have said bread to discard it.
Jennifer W. June 10, 2020
OK- This happens to me too! I live in Central Florida and after leaving any quick bread with fruit out unrefrigerated the bread will start to do this. Unfortunately I dont know they scientific explanation but I will tell you Im convinced its because its starting to break down and its usually accompanied by a slight off taste like its about to go moldy. When I refrigerate my breads this wont happen. I think the fruit is starting to ferment in my warm environment.
SillyBee June 27, 2020
This is my guess too. I think the stretchy strands develop as the liquids begin to separate from the flour. When it combines with the sugar, it gets that stretchy quality.
Arbutus August 25, 2022
In tropical countries, sweetened, muffin-like bread is considered stale enough to be discarded, if stretchable, thin transparent threads are seen when a piece is pulled apart. Experience may have shown it can cause illness. Whether it is used as a generic indicator of staleness, or the threads themselves harbor organisms, I do not know. The answer would be interesting to find.
Tadors September 2, 2023
It looks like rope spoilage which is caused by bacteria.
HalfPint June 4, 2020
Looks like fiber strands from the bananas.
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