The possibilities of using the reverse osmosis process for the production of low alcohol content wine without having to add water are described. Two reverse osmosis systems were employed. The first was equipped with ethanol-permeable membranes and the second with selective ethanol-retention membranes. The permeate-exchange unit ensures the water and ethanol balance of the system. The product intended for manufacture by the proposed technique remains `wine9 by its composition and organoleptic quality.
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Bui et al. (1986) studied this question.