Coca-cola and egg for propagation?

In you tube there are many videos showing propagation of cuttings of various plants using coca-cola, egg and aloe-vera. how accurate are these? any truth in them? D o we have any authentic thread for propagation of cuttings?

No replies:-( But i went ahead and air-layered Mango.Lemon, and Mulberry and out of these, Mulberry seems to be succesful.