The beef is of very high quality and nothing at all is done to it. You do know that you can order an uncooked patty from the Manager. Go ahead and do that and send it to any food lab you like.
Also, can you please provide the sources and links as to where you are getting your Mcdonalds Beef Patty info from? I bet you have ZERO.
As for the French Fries, They are just oil and Potatoes and a special Vinegar added during the Blanching process. I make an EXACT clone of them via J. Kenji Alt`s Food Lab. Look it up if you`d like to learn more.
http://aht.seriouseats.com/archives/2010/05/the-burger-lab-how-to-make-perfect-mcdonalds-style-french-fries.html
their website is a little confusing:
"
100% Angus Beef Patty:100% Angus beef.
Prepared with Grill Seasoning (salt, black pepper) and Angus Burger Seasoning: Salt, sugar, onion powder, natural (botanical source) and artificial flavors,
maltodextrin, natural beef flavor [beef broth, yeast extract, maltodextrin, salt, lactic acid, natural flavor (plant source), beef fat, citric acid], spice, dextrose, autolyzed
yeast extract, garlic powder, dried beef extract, sunflower oil, caramel color, worcestershire sauce powder [distilled vinegar, molasses, corn syrup, salt, caramel color,
garlic powder, sugar, spices, tamarind, natural flavor (fruit source)], spice extractives, annatto and turmeric (color), calcium silicate and soybean oil added to prevent
caking.
100% Beef Patty:100% pure USDA inspected beef; no fillers, no extenders. Prepared with grill seasoning (salt, black pepper)."