Biomass derived chemicals although recent technology is the future in terms of; sustainability, renewability, strong competition and if it is given half the attention fossil-based ones receive, it will prove more rewarding for the future.
I've attached a link http://books.google.co.uk/books?id=MZyl15Cz3PAC&pg=PR9&dq=valorisation+of+biomass-derived+chemicals&hl=en&sa=X&ei=bN3mULzOFKLV0QWZpYHQDw&ved=0CEsQ6AEwAw#v=onepage&q=valorisation%20of%20biomass-derived%20chemicals&f=false. if you can access sciencedirect journals, that could also come in handy.