The province of Entre Ríos, in Argentina, has been characterized by citrus production for decades and more recently, by blueberry production. A high percentage (15-25 %) of Argentinian orange production, very similar to the exportable one, has been derived to industry due to the difficulty to commercialize in more profitable trades, in the last five years. In addition, the increasing volume of blueberries not suitable to export, with limited presence in the domestic market and few industrialization possibilities, has caused negative social, economical and environmental impacts.Argentinian vinegar industry produces vinegars from alcohol, white and red wine and apple. However, the bibliography does not provide enough information about this product made from citrus or blueberries. Very few studies report on blueberry vinegars but nothing about vinegars produced from orange were found. Since both fruits possess high sugars content (8-15%), the possibility of making vinegar from alcoholic orange and blueberry substrates was evaluated. Furthermore, as these fruits are rich in bioactive compounds, new products with functional characteristics could be developed. Submerged acetification assays were performed using both oranges and blueberries alcoholic substrates. A previously isolated and identifiedAcetobacter strain (Biotecnología y Microbiología laboratory, Facultad de