I was looking into the Google Plus Author tag benefits for SEO and marketing, but the problem is that my company writes on some 10 different topics. I don't want someone searching for tacos being pointed to an account that talks about tacos, fish tanks, and corvettes (as an example)

Do i just need to suck it up and create different email addresses and Google + accounts for each or is there some other way?

Im sure im not the only webmaster with this issue?