RichD wrote:
> Sometimes you find a fruit, with skin intact, but a discolored
> bruise is visble, beneath the skin. (apples, pears) I always
> slice that off, but is there any health hazard ingesting it?

Perfectly safe, slightly differrent taste and texture.

> Also, if the interior is sealed, skin unbroken, how does the
> discoloration occur, if there's no oxygen exposure?

Put your arm on a table. Now pick up a hammer with the
other hand and hit your arm. The skin probably will not
break but the area underneath will bruise. Same thing.
Remember that apple cells carry oxygen, as do most
living cells.

pavane