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Is PLA safe for food?

A bunch of clever people ran an experiment titled the Safety assessment of polylactide (PLA) for use as a food-contact polymer back in 1995 and published their results in Food and Chemical Toxicology.
They tested PLA under a variety of typical food storage conditions and measured what leached out into food-simulating solvents, such as Ethanol (what you find in liquor) and acetic acid (what you find in Vinegar). The storage conditions were varied with a bunch of short and long term storage conditions. They even heated the some samples to 60°C to simulate food serving conditions.
The study found that PLA is Generally Recognized As Safe (GRAS) when used in contact with food. Their summary concluded that PLA releases a small amount of lactic acid into foods. Lactic acid is a common food ingredient, that is even found in breast milk. They estimated that the amount of lactic acid people would consume from PLA to be about 700 times less than the lactic acid intake of breast-fed infants.

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