This document by The Delaware Department of Natural Resources and Environmental Control identifies Reduce, Reuse and Recycle as the path to reducing pollution from Food Processing.
This simple document makes one think of what goes in in the process and is worth a quick read. Reducing inputs of course reduces product cost and waste and in my opinion is the preferred approach. Recycling and Reusing are reactive measures and have associated with them the waste of energy and water resulting from repeat processing.
I am able to email you this document if you require please email me here with 3Rs in the subject line.