Business Green: UK-based biofuel specialist D1 Oils has announced that it has delivered its first batch of jatropha oil, amid early signs that the energy crop could prove more cost effective and deliver deeper cuts in carbon emissions than conventional biofuels. The company also announced that it is on track to deliver 1,000 tonnes of jatropha oil by the end of the year through its joint venture with energy giant BP and expects to expand its plantation operations from 257,370 hectares to 300,000 …