**5. Future development**

Most reports are aimed to the obtaining of biofuels of first-generation. However, these methodologies of synthesis are directed to the obtaining of fuels of second and third generation to promote sustainable chemistry and the use of renewable raw materials that not compete with foods.

The coupling of biotechnological processes with these new technologies would allow the improvement of existing processes, reducing time and increasing the production.

The development of additives that improve the properties of biodiesel would allow an improvement in cold flow properties for biodiesel from oils as palm, which can be obtained with these technologies.

Efforts must concentrate on developing these technologies at pilot and industrial levels, with continuous processes, low energy consumption, economic and insurance.
