European demand for natural antioxidants for shelf life extension has boomed in recent years, and revenues for natural varieties are set to outstrip those from synthetic equivalents on the back of consumer demand for natural ingredients, the market researcher said. It predicts the European market for shelf life extension food additives to more than double from 2011 levels by 2018, from $103.6m (about €79m) to $246.1m (€188m).