The United States Food and Drug Administration (FDA) has approved the use of glycerol ester of gum rosin to adjust the density of citrus oils used in manufacturing beverages.

The FDA, said a memorandum released by the World Trade Organisation (WTO) has also ordered that the additive's concentration may not exceed 100 ppm (parts per million). It will be a substitute for glycerol ester of wood rosin, which is already authorised in the USA for this use.

This decision followed a petition filed by T&R Chemicals, Inc. The WTO has given other member governments until April 28 to complain about the decision.