GAIN Working Paper n°16 Michael Obanubi, Augustine Okoruwa, Saul Morris, Stella Nordhagen, Eric Djimeu Wouabe, Teale Yalch BUSINESS OPPORTUNITIES TO REDUCE POST- HARVEST LOSS OF NUTRITIOUS FOODS MODELLING THE RETURN ON INVESTMENT FOR FIELD-READY TECHNOLOGIES IN NIGERIA GAIN Working Paper n°16 January, 2021