Board Thread:Fourth Databook/@comment-3279282-20141105164529/@comment-945885-20141215031447

In the third databook Q&A, Kishimoto basically said that the powers granted to the Jinchuriki are permanent, FYI. I forget the exact words, but regarding Gaara still using sand, "the sand powers don't go away, even after extraction."

I think it's safe to assume that, at least after hosting the beasts for many years, their powers become part of the Jinchuriki's essence. Of course, Gaara is really the only example of a Jinchuriki surviving extraction.