Anyone know what these are?  I currently feed Wainwright adult trays to my young bitch and she is doing great on them (she doesnt do kibble) and I hav just noticed that these are in the food but havent a clue what it is or whether it is an issue? 

just my experience but I think it depends on the dog.
With 3 previous dogs we had, 2 had no problems but the third reacted by going hyper.......ever tried flying an 8 st Rott like a kite :-D .
We did LOTS of trial & error stuff and she reacted to any EC additives and colourings in food. similar effect to some kids and yellow colouring in drinks etc.
Chris

not had any adverse effects at all but looking at the website these are only in the puppy food as when I look at the box of it that I have it mentions nothing just tocopherals whatever they happen to be

This is a fairly good site just to give you straightforward, basic info:

http://www.best-dog-food-review.com/67901/70401.html

I tend to avoid EC permitted colours, BHAs and BHTs 'cause of health links, and prefer natural antioxidants/tocopherals ... I care about what goes into my dog's but I eat any old junk!! :-)  Anyway, site's a good starting point.

looks like it is only EC permitted antioxidents and no colours preservatives etc and looks like tocapherals are used so that has put my mind at rest to be honest as I am picky about what I feed but wont spend money out for the sake of it either.