The idea of 2021 Lisbon-Portugal 31st International Conference on “Food, Biological and Environmental Sciences” (FBES-21) scheduled on Dec. 13-15, 2021 Lisbon (Portugal) is for the researchers, scientists, scholars, engineers and parctitioners from all around the world to present and share ongoing research activities. This conference provides opportunities for the delegates to exchange new ideas and application experiences face to face, to establish business or research relations and to find global partners for future collaboration.