Beverage preparation apparatus adapted for preparing beverages by means of supply of a pressurized fluid by a fluid supply source so that flows through a single portion of edible substance precursor of a beverage, whereby said apparatus comprises: - a portion collection disposition arranged downstream of a fluid injection disposition provided stationary, and upstream of a beverage discharge disposition, and adapted for collection of said single portion in an open position, and for beverage discharge into said beverage discharge disposition in a closed position, - a first support structure provided stationary, presenting a first region, for example the posterior region or the base region, adapted for connection to said fluid supply source, and a second region, for example the frontal region, adapted for supporting said portion collection disposition; - a closing disposition comprising a closing element presenting an elongated form with a free edge and provided such that can be swivelled around a reference swivel axis, between an open position in which releases passage for introduction of said single portion into said portion collection disposition, and a closed position in which provides closing of said portion collection disposition in a liquid-tight manner, characterized in that said closing element is provided so that said respective free edge is oriented backwards and that can be moved around a reference swivel axis disposed in a frontal region and below the top region of said first support structure, so that said closing disposition can be opened by a corresponding swivelling movement of said closing element from a substantially horizontal direction and oriented backwards, corresponding to the closed position, to a substantially vertical direction and oriented upwards in a frontal region of said first support structure, corresponding to the open position, and can be closed by means of a reverse movement, and in that said first support structure presents an envelope casing, whereby said closing element is configured so that, in the closed position, results adjacent to the top region of said envelope casing or at least partially embedded therein. - a portion collection disposition arranged downstream of a fluid injection disposition provided stationary, and upstream of a beverage discharge disposition, and adapted for collection of said single portion in an open position, and for beverage discharge into said beverage discharge disposition in a closed position, - a first support structure provided stationary, presenting a first region, for example the posterior region or the base region, adapted for connection to said fluid supply source, and a second region, for example the frontal region, adapted for supporting said portion collection disposition; - a closing disposition comprising a closing element presenting an elongated form with a free edge and provided such that can be swivelled around a reference swivel axis, between an open position in which releases passage for introduction of said single portion into said portion collection disposition, and a closed position in which provides closing of said portion collection disposition in a liquid-tight manner, characterized