The whole question of food wastage is a scandal. You used to hear about "food mountains" a couple of years ago, although you don't now. The food mountains seemed to comprise produce that was mostly over supplied which the marketing boards could not get a high enough price for so the food was left to rot or go off - whilst millions starved around the world. It was deemed preferable to let the food stay in situ and take the financial loss than loading it onto aircraft and distributing it to those that needed it
There was also a very interesting thread on this forum, probably 1 1/2 years ago, on the subject of food waste, I think in NSW. It's not just bread, its the entire food supply chain and ethic that is completely wrong and needs to be looked at.