If fruit such as cut pineapple, starts to bubble, which I think would mean it is starting to ferment, would there be any health benefits or risks to this?

As fruit ripens the nutrient content actually improves so there is a point of full ripening where fruit can be enjoyed in its optimal nutrition; however, as the process of decay happens, the fruit ferments and unhealthy bacteria are formed, which ...

from The World's Healthiest Foods http://ift.tt/1AV8Sgh