As part of the collaboration, Boeing and GOL will jointly identify and select the most promising feedstocks and refining technologies.

Also, the companies will work together in the approval process for new fuel pathways to enable the fuel meets safety and performance standards.

The collaboration will help GOL’s plans to use lower-carbon jet fuel on 200 flights during the sporting event in Brazil in 2014 and to incorporate biofuel into 20% of its flights in the sporting event being held in Rio de Janeiro in 2016.

The collaboration also will benefit long-term development of the new aviation biofuel industry in Brazil.

GOL CEO Paulo Sergio Kakinoff said because of its continuous efforts to improve in technology that resulted in ever-lower fuel consumption, the Boeing Next Generation 737 is the only airplane that GOL flies.

"Boeing’s focus on fuel efficiency helps us all operate in a more sustainable fashion, and the expansion of our partnership with this new project will further advance the effort to expand biofuel use in Brazil. It also will serve as an example to the world of what is possible today and in years to come," added Kakinoff.

Recently, GOL, with an assistance from the Inter-American Development Bank, has conducted Brazil’s first commercial biofuel flight in a Boeing 737-800, which was fuelled in part by sustainable aviation biofuel made from waste cooking oil and blended by Petrobras.