Only way you can sterilize wort would be to autoclave it. Sanitizing is is more than enough for a batch of homebrew. Hell, even in bigger breweries, we just ran 85+C water off the boiler through already cleaned (with caustic) lines, valves, etc. The same method is used through a cleaned CIP spray ball to sanitize fermenters. Would be a hell of a lot of work running something like starsan into a 150BBL fermenter.
For lab work though (checking yeast cultures, etc.), media gets claved.