United Airlines flew the commercial aviation flight on a microbially-derived biofuel using Solajet.

The Eco-skies Boeing 737-800 plane was fueled with 40% Solajet and 60% petroleum-derived jet fuel.

Solazyme also signed a letter of intent with United to provide about 20 million gallons per year of renewable jet fuel starting in 2014.

Solajet was manufactured via Solazyme’s fermentation process and renewable jet fuel processing technology from Honeywell’s UOP.

Solajet fully complies with the ASTM D7566 specification for Synthetic Paraffinic Kerosene from Hydroprocessed Esters and Fatty Acids, which specifies bio-based fuels intended to be blended with commercial jet fuel.