(CNBC) - Constellation Brands, the owner of Corona and Svedka Vodka, has made an approach to acquire Jack Daniel's owner Brown-Forman, people with knowledge of the matter said.

Brown-Forman said it was not interested in selling, but informed the board of Constellation Brands' interest, said the people, who asked not to be named discussing private information.

Terms of any potential offer could not be learned, but Brown-Forman's market cap is hovering around $22 billion. There are no ongoing talks, one of the people said. But Constellation remains interested in a potential merger.