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(11)

EP 0 414 766 A1

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(43) Date of publication: 06.03.1991 Bulletin 1991/10 (21) Application number: 89905729.0 (22) Date of filing: 11.05.1989

(51) International Patent Classification (IPC):  C12M 3/ 00( . ) C12N 5/ 04( . ) C12N 5/ 02( . ) (86) International application number: PCT/GB1989/000510 (87) International publication number: WO 1989/010958 (16.11.1989 Gazette 1989/27)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 14.05.1988 GB 19880011478 (71) Applicant: AGRICULTURAL AND FOOD RESEARCH COUNCIL Reading Berkshire RG2 9AT (GB)

(72) Inventors: WILSON, Peter, David, George Institute of Food Norwich NR4 7UA (GB) HILTON, Martin, Geoffrey Institute of Food Norwich NR4 7UA (GB) STEER, David, Charles 55 Sycamore Avenue Norfolk NR18 0HF (GB) WASPE, Christopher, Royal Institute of Food Colney Lane Norwich NR4 7UA (GB) ROBINS, Richard, John Institute of Food Research Norwich NR4 7UA (GB) RHODES, Michael, John, Charles Institute of Norwich NR4 7UA (GB) (74) Representative: Bassett, Richard Simon, et al  ERIC POTTER & CLARKSON St. Mary's Court St. Mary's Gate Nottingham NG1 1LE Nottingham NG1 1LE (GB)