We can similarly generate a turtle text from the store. Serialize is the function. You pass it the document (as a NamedNode) we are talking about, and it will just select the triples from that document to be output.
-console.log($rdf.serialize(doc, store, aclDoc.uri, 'text/turtle'));
+console.log($rdf.serialize(doc, store, doc.uri, 'text/turtle'));
If you omit the document parameter to serialize, or pass null, then you will get all the triples in the store. This may, if you have used a Fetcher, possibly metadata which the fetcher has stored about the HTTP requests it made in fetching your documents. Which might be interesting... but not what you were expecting.