Beverage brewing unit particularly for machines for preparing beverages from capsules, comprising: - a casing; - a capsule enclosing assembly comprising a first enclosing part connected to the casing and a second enclosing part, moveable relative to the first enclosing part along a longitudinal direction of axis, preferably in a translatory movement, between a capsule insertion position in which the two enclosing parts are at distance from each other with a passage formed in between and a capsule enclosing position in which the capsule is enclosed between the first and second enclosing parts (2,3); and - a capsule insertion assembly comprising a pair of jaws (33, 34) arranged for guiding the capsule towards the intermediate insertion position and holding it in said position; said jaws comprising a pair of support surfaces for holding the capsule against gravity, the jaws (33, 34) being moveable between a capsule holding position in which the support surfaces are close to one another a distance sufficient to hold the capsule in said position and a capsule release position in which the support surfaces of the jaws are spread apart a distance sufficient to no longer hold the capsule, the jaws (33, 34) being driven from the capsule release position to the capsule holding position by first actuation means (47, 48, 49, 50) and from the capsule holding position to the capsule release position by second actuation means (52, 53, 54), the first and second actuation means (47,48, 49; 52, 53, 54) being arranged at longitudinal distance one another along the direction of longitudinal axis for the relative movement of the two enclosing parts (2, 3) in such a manner that the first actuation means (47, 48, 49, 50) acts on the jaws when the second enclosing part moves relatively away from the first enclosing part and the two enclosing parts are sufficiently distant one another to allow the capsule to be removed from the capsule enclosing assembly (2, 3) through the passage after brewing; the second actuation means (52, 53, 54) acting on the jaws when the second enclosing part moves relatively towards the first enclosing part and the enclosing parts are sufficiently close one another to enable the capsule to be properly maintained or hold by at least one of the enclosing parts (2, 3) before being enclosed by the enclosing parts, characterized in that the first enclosing part and second enclosing part form together at least part of a centrifugal brewing unit in which the capsule is driven in rotation for exerting forces of centrifugation inside the capsule resulting in beverage to be extracted from the capsule. - a casing; - a capsule enclosing assembly comprising a first enclosing part connected to the casing and a second enclosing part, moveable relative to the first enclosing part along a longitudinal direction of axis, preferably in a translatory movement, between a capsule insertion position in which the two enclosing parts are at distance from each other with a passage formed in between and a capsule enclosing position in which the capsule is enclosed between the first and second enclosing parts (2,3); and - a capsule insertion assembly comprising a pair of jaws (33, 34) arranged for guiding the capsule towards the intermediate insertion position and holding it in said position; said jaws comprising a pair of support surfaces for holding the capsule against gravity, the jaws (33, 34) being moveable between a capsule holding position in which the support surfaces are close to one another a distance sufficient to hold the capsule in said position and a capsule release position in which the support surfaces of the jaws are spread apart a distance sufficient to no longer hold the capsule, the jaws (33, 34) being driven from the capsule release position to the capsule holding position by first actuation means (47, 48, 49, 50) and from the capsule holding position to the capsule release position by second actuation means (52, 53, 54), the first and second actuation means (47,48, 49; 52, 53, 54) being arranged at longitudinal distance one another along the direction of longitudinal axis for the relative movement of the two enclosing parts (2, 3) in such a manner that the first actuation means (47, 48, 49, 50) acts on the jaws when the second enclosing part moves relatively away from the first enclosing part and the two enclosing parts are sufficiently distant one another to allow the capsule to be removed from the capsule enclosing assembly (2, 3) through the passage after brewing; the second actuation means (52, 53, 54) acting on the jaws when the second enclosing part moves relatively towards the first enclosing part and the enclosing parts are sufficiently close one another to enable the capsule to be properly maintained or hold by at least one of the enclosing parts (2, 3) before being enclosed by the enclosing parts, characterized in that the first enclosing part and second enclosing part form together at least part of a centrifugal brewing unit in which the capsule is driven in rotation for exerting forces of centrifugation inside the capsule resulting in beverage to be extracted from the capsule.