Serialization to yaml


I m serializing an object so that I can send it by email easily.
However my serailized object sometimes have a lot of quotes in it
like :

  commentable_type: BlogPage
  updated_at: 2008-07-14 19:55:03
  title: “”
  rating_total: “-3”
  id: “2”
  commentable_id: “24”
  rating_avg: “-3.00”
  rating_count: “-3”
  user_id: “8”

How can I possibly remove these quotes.

Thanks in advance,