The Brazilian food retail company "Zamb," which operates "Burger King" and "Popeyes" restaurants in the country, announced on Wednesday that it is in talks with "Starbucks" to operate its brand in the largest economy in Latin America. Zamb, supported by Mubadala, the government investor in Abu Dhabi, added in a securities report that no proposals have been submitted so far. This news comes as Zamb announced in a separate statement that Mubadala, its main shareholder, has acquired a controlling stake in the company. Local media initially reported the discussions with "Starbucks" on Tuesday.