General Question

nebule's avatar

What is the powdery residue on grapes that I buy from the supermarket?

Asked by nebule (16436points) April 25th, 2009

is it pesticide?

and does washing them in water really get it off…cause they still seems bit…powdery…

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12 Answers

casheroo's avatar

Hmm. I don’t think it’s pesticide. I asked my husband, he thinks it occurs naturally.

nebule's avatar

hmmm interesting,,,

asmonet's avatar

I would think it’s wax, like on apples.

asmonet's avatar

Quick googling, says mildew.

nebule's avatar

can’t be healthy though surely…if it is indeed a wax of some form…and if so…what is it for??

nebule's avatar

oooooh yuk :-p

asmonet's avatar

But I think the mildew is from when they’re on the vine, I’m really more convinced it’s some sort of wax.

Even so, no worse than mushrooms.

nebule's avatar

found it!.(my initial search didn’t produce any definitive findings!) thanks all x

asmonet's avatar

Ha! I’m Queen of Guessin’! :)

juniper's avatar

Rinse to remove? Fruit is porous. I don’t get the whole rinsing logic….can someone explain this to me?

Jack79's avatar

I have not seen it, but my dad grows grapes, so it can be one of two things:

1) sulphur, which is basically a fertiliser and would make them taste bad if you don’t wash it. Just a rinse will be enough though.

2) part of the skin of the grape (I don’t think it’s really mildew, but it may be). It’s more like an extra layer by the grape itself trying to protect its skin. Again, just rinse and you’ll survive.

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