(19)

(11)

EP 0 535 039 A1

(12)

(43) Date of publication: 07.04.1993 Bulletin 1993/14 (21) Application number: 91910934.0 (22) Date of filing: 12.06.1991

(51) International Patent Classification (IPC):  A23C 9/ 12( . ) A23C 19/ 11( . ) C07K 7/ 08( . ) C07K 14/ 315( . ) C12C 11/ 00( . ) C12N 1/ 06( . ) C12N 15/ 09( . ) C12P 7/ 06( . ) C12R 1/ 01( . ) A23C 9/ 13( . ) A23C 19/ 14( . ) C07K 14/ 195( . ) C07K 14/ 41( . ) C12H 1/ 14( . ) C12N 1/ 21( . ) C12N 15/ 31( . ) C12P 21/ 02( . ) (86) International application number: PCT/EP1991/001109 (87) International publication number: WO 1991/019802 (26.12.1991 Gazette 1991/29)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 18.06.1990 GB 19900013577 26.10.1990 GB 19900023380 (71) Applicant: NORWEGIAN DAIRIES ASSOCIATION N-1340 Oslo 1 (NO)	(72) Inventors: HOLO, Helge N-1430 As (NO) NES, Ingolf, F. N-1430 As (NO) (74) Representative: Holmes, Michael John  Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway London, WC2B 6UZ, London, WC2B 6UZ, (GB)