PARIS, Jan 13 (Reuters) - France's second largest sugar and ethanol maker Cristal Union has appointed Xavier Astolfi as its new chief executive officer, succeeding Alain Commissaire who has been at the helm of the group since its creation in 2000, the company said on Thursday.

Astolfi, 51, has been deputy CEO of Cristal Union since 2012. He will be replaced in turn by Stanislas Bouchard, the head of Cristal Union's commercial branch Cristalco, a post which Bouchard will keep, Cristal Union said in a statement.

Vanina Paolaggi, a former lawyer specialised in mergers and acquisitions, was appointed secretary general to replace Jean-François Javoy. (Reporting by Sybille de La Hamaide Editing by Mark Potter)