L. Polynômes-rij-orthonormés-de, T. , and O. , ! sont le résultat du produit tensoriel des polynômes Pi et Qj. Ainsi, Rij(T,02) = Pi(T) ® '1(02) d'où

+. Uo, 0266 ? O2 -1,1394) + a2o(O,0625 ? 72 -3 ? T + 34,75) + Uo2(O,00093 ? O~ -0,096 ? O2 + 1,0943) + a, p.366, 1394.

S. Atkinston, F. Mavituna, . Cy, D. Picque, and G. Corrieu, Bioteehn%gy Handbook The nature press Effect of initial oxygen concentration on diacetyl and acetoin production by Laetoeoeeus, Biochemica/ Engineering, vol.59, pp.1893-1897, 1983.

N. Sassit, C. Boquien, D. Picque, and G. Corrieu, Effect of tempe rature on diacetyl and acetoin production by Laetoeoeeus /aetis subsp /aetis biovar diaeety/aetis CNRZ 483, 1994.

R. Harvey and E. Collins, Citrate transport system of Streptoeoeeus diaeety/aetis, J Bec- terio, vol.83, pp.1005-1006, 1962.

R. Harvey and E. Collins, Roles of citrate and acetoin in the metabolism of Streptoeoeeus diaeety/aetis, J Baeterio, vol.86, pp.1301-1307, 1963.

J. Hugenholtz and M. Starrenburg, Diacetyl production by different strains of Laetococeus /aetis subsp laetis var diaeety/aetis and Leueonostoe spp, pp.17-22, 1992.

T. Kaneko, M. Takahashi, and H. Suzuki, Acetoin fermentation by citrate-positive Laetococcus /aetis subsp /aetis 3022 grown aerobically in the presence of hemin or Cu2+, App, vol.56, pp.2644-2649, 1990.

A. Kobilinsky, Tactiques en analyse de variance et en régression, Rev Modu, vol.1, pp.25-58, 1988.

J. Lebreton and C. Millier, Courbes de réponse croissantes avec point d'inflexion. /n : Modè/es dynamiques déterministes en biologie, pp.162-164, 1982.

D. Lee and E. Collins, Influences of Temperature on Growth of Streptococcus cremoris and Streptococcus lactis, Journal of Dairy Science, vol.59, issue.3, pp.405-409, 1975.
DOI : 10.3168/jds.S0022-0302(76)84220-8

Y. Noël, C. Durier, N. Lehembre, and A. Kobilinsky, ??tude multifactorielle de la coagulation mixte du lait analys??e par visco??lasticim??trie, Le Lait, vol.71, issue.1, pp.15-39, 1991.
DOI : 10.1051/lait:199112

H. Oberman, A. Piatkiewicz, and Z. Libudzisz, Production of diacetyl and acetoin by lactic acid bacteria, Food / Nahrung, vol.37, issue.7-8, pp.615-623, 1982.
DOI : 10.1002/food.19820260706

H. Ochi, M. Takahashi, T. Kaneko, H. Suzuki, and H. Tanaka, Diacetyl production by coimmobilized citrate-positive Laetoeoeeus /aetis subsp /aetis 3022 and homogenized bovine liver in alginate fibers with double gel layers, pp.505-510, 1991.

C. Petit, F. Vilchez, and R. Marczak, Formation and stabilization of diacetyl and acetoin concentration in fully grown cultures of Streptococcus /aetis subsp diacety/aetis, pp.53-56, 1989.

P. Schmitt, C. Couvreur, J. Cavin, H. Prévost, and C. Divies, Citrate utilisation by free and immobilized Streptoeoeeus /aetis subsp diaeety/aetis in continuous culture, App/ Mierobief Bioteehno, vol.29, pp.430-436, 1988.

H. Spinnler and G. Corrieu, Automatic method to quantify starter activity based on pH measurement, Journal of Dairy Research, vol.33, issue.05, pp.755-764, 1989.
DOI : 10.1051/lait:198811

J. Stadhouders, Dairy starter cultures, pp.329-337, 1974.

H. Takahashi, H. Ochi, T. Kaneko, H. Suzuki, and H. Tanaka, Diacetyl production by immobilized citrate-positive Laetococcus, 1990.
DOI : 10.1007/bf01030754