Comment Re:What does this do, chemically? (Score 1) 475
It's nothing to do with the safety of the inks. Sometimes, I think people ink entire oranges to make them orange enough. No. It was determined that, if more than a certain number of people squeeze a given grapefruit, the ink smudges, leaving the label unreadable. This is worse than nothing no matter how you slice it -- especially now that large oranges are the same size as small grapefruit.
Using water-soluable ink on citrus fruit that is then left directly under sprinklers also creates problems...