As far as I know, you body just needs sugar / electrolytes while on the bike. Orange juice with salt added is most likely as good as the world's most expensive energy bar.
The only reason you'd need any of those vitamins / proteins while on the bike is if your nutrition is crap the rest of the day anyway.

Now if you plan on biking for like 10 hours without stops, then maybe you can bring some bars along for convenience to act as meal replacement.