Is there any way I can extract create databse DDL from the server. I have around 48 databases on the server.

I tried ddlgen but it generate complete schema for the database along with create database and I heard it also not good for dump and load as it club the entries.

To generate DDL for all databases:
ddlgen -Ulogin -Ppassword -Sserverort -TDB -N% - this does complete reverse engg of the databse, users, grants etc.

any other option please suggest.

I do not have dbartisan or any such tool.