(19)

(11)

EP 0 231 333 A1

(12)

(43) Date of publication: 12.08.1987 Bulletin 1987/33 (21) Application number: 86904966.0 (22) Date of filing: 24.07.1986

(51) International Patent Classification (IPC):  C12M 1/ 00( . ) C12M 1/ 12( . ) (86) International application number: PCT/SE1986/000342 (87) International publication number: WO 1987/000548 (29.01.1987 Gazette 1987/03)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 25.07.1985 LU 19850086023 (71) Applicant: ALFA-LAVAL FOOD ENGINEERING AB S-221 00 Lund (SE)	(72) Inventors: LEFEBVRE, Paul, Henri B-1970 Wezembeek (BE) COLINET, Edouard B-1640 Rhode St. Génese (BE) LEFEBVRE, Henri, J., L. B-1970 Wezembeek (BE)