When buying grapes, white stains on the skin of grapes are normal. And can be caused by many things. However, we can tell the difference between naturally occurring white stains and those caused by chemicals.

Natural white stain appearance

The white coating found on the grape skin is called bloom. A natural protective layer that grapes produce. Bloom is made up of a type of yeast that coats the grape skin, protecting it from friction. And microbial infection, allowing the grapes to stay fresh longer.

Naturally occurring white stains.

Appearance: Fine white powder, like talcum powder, easy to spread and easy to come off when touched.
Origin: Caused by natural yeast on the grape skin, acting as a shield to protect the grapes from germs and moisture.
Hazard: Not harmful to health, can be eaten.
How to remove: It is not necessary to remove, ยูฟ่าเบท but if you want to wash it, you can easily wash it off with plain water.

Chemical white stain characteristics

If you notice white stains on the grape skin that are rough, not smooth, stuck together and cannot be wiped off. It may be the stains of chemicals used in agriculture, such as pesticides, which are coated on the grape skin. Therefore, before eating, you should wash the grapes thoroughly with water several times to reduce the amount of chemical residue and for good hygiene.