MINNETONKA — A Minnesota food company is widening its recall of hard-cooked eggs because of a potential for listeria contamination.

Michael Foods, of Minnetonka, is recalling eggs in brine sold in 10- and 25-pound pails for institutional use in 34 states. The eggs carry six brand names: Columbia Valley Farms, GFS, Glenview Farms, Papetti’s, Silverbrook and Wholesome Farms.