Coffee next in line as biofuel source

Coffee grounds can provide a cheap and abundant source of biodiesel, particularly in coffee-producing nations, say researchers.

Coffee grounds

Scientists at the US-based University of Nevada, Reno, used an inexpensive process to extract oil from the leftovers of making espressos, cappuccinos and other coffee preparations from a multinational coffeehouse chain.

This oil was then converted into biodiesel, which could be used to fuel cars and trucks.

Guardian