Automatic Post Moderation / Filtering

I have found a ton of information on content filtering, and management of specific rolls.
What I am looking for though is a plugin that will delete a post if it contains mature content.

To elaborate: My site pulls content from other websites, primarily landscape images, or articles on travel. These posts are automatically generated and posted. They are so frequent that I couldn’t possibly manually approve/disapprove each individual post. Also, it is meant to be an automated process. (set it up and walk away).

The issue is that occasionally, maybe once every few days a post gets published with inappropriate or “mature” content.

Posts are automatically published and pushed to facebook / twitter etc… you can imagine the panic involved with a mature post and the flags it would set off.

Is there a plugin that would be able to filter these automatic posts? Something that would search the title or content for a keyword and auto-delete it?

Thanks in advance!