By Paul Speed There are foods we all traditionally wash before eating, like the humble spud, but do you bother to rinse, say, an apple? Research says you should – and if that comes as a surprise, wait until you find out what else you need to start scrubbing. Loose vegetables and fruits can be touched frequently in supermarkets, so taking steps to thoroughly clean produce can help keep germs at bay. And the team at online healthy food retailer MuscleFood.com have revealed supermarket buys which must be washed thoroughly before eating to prevent harmful germs, toxins and pesticides. Fruit and ve…