Challenges to Levulinic Acid and Humins Valuation in the Sugarcane Bagasse Biorefinery Concept. - Lopes, Emília Savioli; Leal Silva, Jean Felipe; Rivera, Elmer Ccopa; Gomes, Alana Petrina; Lopes, Melina Savioli; Maciel Filho, Rubens; Tovar, Laura Plazas (BioEnergy Research, 2020)