United Natural Foods today [Tuesday] announced it has signed a letter of intent to acquire Blooming Prairie Cooperative, the largest volume distributor of natural foods in the Midwest region of the US. Blooming Prairie, headquartered in Iowa City, IA and in business since 1974, had approximately US$130m in sales for the latest twelve months. Terms of the acquisition were not disclosed. Consummation of the acquisition is contingent, among other things, upon execution of an asset purchase agreement and approval by the members of Blooming Prairie.