ST. LOUIS — Todd Bastean, former president of Bunge North America, has been named president and chief executive officer of the Saint Louis Science Center. He succeeds Barbara Boyle, who had been serving as interim president and c.e.o. for the past year. Ms. Boyle will return to her role as chief operating officer and chief financial officer.

In his new role Mr. Bastean will lead the Science Center’s more than 200 employees and 300 volunteers working to fulfill the Science Center’s mission: “To ignite and sustain lifelong science and technology learning.”

Mr. Bastean started his career at Bunge in 1994 and became c.f.o. of Bunge North America in 2010. Before assuming that role he served as vice-president and general manager of the operating company’s milling and biofuels business units and as vice-president and chief administrative officer of its grain and milling business units. He also held positions in strategic planning and auditing. Prior to joining Bunge, he worked for KPMG Peat Marwick.

He retired from Bunge earlier this year.

 “Todd was chosen to lead the Science Center for his extensive executive experience and his commitment to one of St. Louis’ most prized institutions,” said Donna Wilkinson, president of the Science Center Board of Trustees and search committee chairman. “His background in agriculture tech and focus on STEM — areas in which the Science Center leads the science and technology museum industry — will be of great benefit to the region.”