The central composite design was developed to search for an optimal medium for the growth of Lactobacillus rhamnosus OXY. The effect of various media components, such as carbon sources, simple and complex nitrogen sources, mineral agents, and growth factors (vitamins B, amino acids) was examined. The first-order model based on Plackett-Burman design showed that glucose, sodium pyruvate, meat extract and mineral salts significantly influenced the growth of the examined bacteria. The second-order polynomial regression confirmed that maximum biomass production could be achieved by the combination of glucose (12.38 g/l), sodium pyruvate (3.15 g/l), meat extract (4.08 g/l), potassium phosphate (1.46 g/l), sodium acetate (3.65 g/l) and ammonium citrate (1.46 g/l).The validation of the predicted model carried out in bioreactor conditions confirmed the usefulness of the new medium for the culture of L. rhamnosus OXY in large scale. The optimal medium makes the culture of the probiotic bacterium L. rhamnosus OXY more cost effective.
Amrane, A., Prigent, Y. (1998) Influence of yeast extract concentration on batch cultures of Lactobacillus helveticus: growth and production coupling. World J. Microbiol. Biotechnol. 14 , 529–534.
Prigent Y. , 'Influence of yeast extract concentration on batch cultures of Lactobacillus helveticus: growth and production coupling ' (1998 ) 14 World J. Microbiol. Biotechnol. : 529 -534.
Bajpaj-Dikshit, J., Suresh, A. K., Venkatesh, K. V. (2003) An optimal model for representing the kinetics of growth and product formation by Lactobacillus rhamnosus on multiple substrates. J. Biosci. Bioengin. 96 , 5, 481–486.
Venkatesh K. V. , 'An optimal model for representing the kinetics of growth and product formation by Lactobacillus rhamnosus on multiple substrates ' (2003 ) 96 J. Biosci. Bioengin. : 5 -.
Berry, A. R., Franco, C. M. M., Zhang, W., Middelberg, A. P. J. (1999) Growth and lactic acid production in batch culture of Lactobacillus rhamnosus in a defined medium. Biotechnol. Lett. 21 , 163–167.
Middelberg A. P. J. , 'Growth and lactic acid production in batch culture of Lactobacillus rhamnosus in a defined medium ' (1999 ) 21 Biotechnol. Lett. : 163 -167.
Chen, X., Li, Y., Du, G., Chen, J. (2005) Application of response surface methodology in medium optimization for spore production of Coniothyrium minitans in solid-state fermentation. World J. Microbiol. Biotechnol. 21 , 593–599.
Chen J. , 'Application of response surface methodology in medium optimization for spore production of Coniothyrium minitans in solid-state fermentation ' (2005 ) 21 World J. Microbiol. Biotechnol. : 593 -599.
de Man, J. C., Rogosa, M., Sharpe, M. E. (1960) A medium for the cultivation of Lactobacilli . J. Appl. Microbiol. 23 , 130–135.
Sharpe M. E. , 'A medium for the cultivation of Lactobacilli ' (1960 ) 23 J. Appl. Microbiol. : 130 -135.
Elibol, M. (2004) Optimization of medium composition for actinorhodin production by Streptomyces coelicolor A3(2) with response surface methodology. Process Biochem. 39 , 1057–1062.
Elibol M. , 'Optimization of medium composition for actinorhodin production by Streptomyces coelicolor A3(2) with response surface methodology ' (2004 ) 39 Process Biochem. : 1057 -1062.
Fung, W. Y., Woo, Y. P., Liong, M. T. (2008) Optimization of growth of Lactobacillus acidophilus FTCC 0291 and evaluation of growth characteristics in soy whey medium: a response surface methodology approach. J. Agric. Food Chem. 56 , 7910–7918.
Liong M. T. , 'Optimization of growth of Lactobacillus acidophilus FTCC 0291 and evaluation of growth characteristics in soy whey medium: a response surface methodology approach ' (2008 ) 56 J. Agric. Food Chem. : 7910 -7918.
Ghanem, N. B., Yusef, H. H., Mahrouse, H. K. (2000) Production of Aspergillus terreus xylanase in solid state cultures: application of the Plackett-Burman experimental design to evaluate nutritional requirements. Biores. Technol. 73 , 113–121.
Mahrouse H. K. , 'Production of Aspergillus terreus xylanase in solid state cultures: application of the Plackett-Burman experimental design to evaluate nutritional requirements ' (2000 ) 73 Biores. Technol. : 113 -121.
Guyot, J. P., Calderon, M., Guyot, J. M. (2003) Effect of pH control on lactic acid fermentation of starch by Lactobacillus manihotivorans LMG18010T. J. Appl. Microbiol. Biotechnol. 105 , 637–647.
Guyot J. M. , 'Effect of pH control on lactic acid fermentation of starch by Lactobacillus manihotivorans LMG18010T ' (2003 ) 105 J. Appl. Microbiol. Biotechnol. : 637 -647.
Hanrahan, G., Lu, K. (2006) Application of factorial designs and Response Surface Methodology in modern experimental design and optimization. Crit. Rev. Anal. Chem. 36 , 141–151.
Lu K. , 'Application of factorial designs and Response Surface Methodology in modern experimental design and optimization ' (2006 ) 36 Crit. Rev. Anal. Chem. : 141 -151.
Heriban, V., Sturdik, E., Zalibera, L., Matus, P. (1993) Process and metabolic characteristics of Bacillus coagulans as lactic acid producer. Lett. Appl. Microbiol. 16 , 243–246.
Matus P. , 'Process and metabolic characteristics of Bacillus coagulans as lactic acid producer ' (1993 ) 16 Lett. Appl. Microbiol. : 243 -246.
Hujanen, M., Linko, Y. Y. (1996) Effect of temperature and various nitrogen sources on L(+) lactic acid production by Lactobacillus casei . Appl. Microbiol. Biotechnol. 45 , 307–313.
Linko Y. Y. , 'Effect of temperature and various nitrogen sources on L(+) lactic acid production by Lactobacillus casei ' (1996 ) 45 Appl. Microbiol. Biotechnol. : 307 -313.
Liew, S. L., Ariff, A. B., Raha, A. R., Ho, Y. W. (2005) Optimization of medium composition for the production of a probiotic microorganism, Lactobacillus rhamnosus , using response surface methodology. Int. J. Food Microbiol. 102 , 137–142.
Ho Y. W. , 'Optimization of medium composition for the production of a probiotic microorganism, Lactobacillus rhamnosus, using response surface methodology ' (2005 ) 102 Int. J. Food Microbiol. : 137 -142.
Manteagudo, J. M., Rincon, J., Rodriguez, L., Faertes, J., Moya, A. (1995) Determination of the best nutrient medium for production of L lactic acid from beet molasses a statistical approach. Acta Biotechnol. 13 , 103–110.
Moya A. , 'Determination of the best nutrient medium for production of L lactic acid from beet molasses a statistical approach ' (1995 ) 13 Acta Biotechnol. : 103 -110.
Mataragas, M., Drosinos, E. H., Tsakalidou, E., Metaxopoulos, J. (2004) Influence of nutrients on growth and bacteriocin production by Leuconostoc mesenteroides L124 and Lactobacillus curvatus L442. Antonie van Leeuwenhoek 85 , 191–198.
Metaxopoulos J. , 'Influence of nutrients on growth and bacteriocin production by Leuconostoc mesenteroides L124 and Lactobacillus curvatus L442 ' (2004 ) 85 Antonie van Leeuwenhoek : 191 -198.
Myers, R. H., Montgomery, D. C. (1995) Response Surface Methodology. Process and Product Optimization Using Designed Experiments . John Wiley&Sons, Inc., NY, USA.
Montgomery D. C. , '', in Response Surface Methodology. Process and Product Optimization Using Designed Experiments , (1995 ) -.
Peters, V. J., Snell, E. E. (1954) Peptides and bacterial growth. J. Bacteriol. 67 , 69–76.
Snell E. E. , 'Peptides and bacterial growth ' (1954 ) 67 J. Bacteriol. : 69 -76.
Rogosa, M., Franklin, J. G., Perry, K. D. (1961) Correlation of vitamin requirements with cultural and biochemical characters of Lactobacillus subsp. Appl. Microbiol. Biotechnol. 24 , 473–482.
Perry K. D. , 'Correlation of vitamin requirements with cultural and biochemical characters of Lactobacillus subsp ' (1961 ) 24 Appl. Microbiol. Biotechnol. : 473 -482.
Tamime, A. Y., Marshall, V. M. E., Robinson, R. K. (1995) Microbiological and technical aspects of milks fermented by Bifidobacteria . J. Dairy Res. 62 , 151–187.
Robinson R. K. , 'Microbiological and technical aspects of milks fermented by Bifidobacteria ' (1995 ) 62 J. Dairy Res. : 151 -187.
Youssef, C. B., Goma, G., Olmos-Dichara, A. (2005) Kinetic modeling of Lactobacillus casei ssp. rhamnosus growth and lactic acid production in batch cultures under various medium conditions. Biotechnol. Lett. 27 , 1785–1789.
Olmos-Dichara A. , 'Kinetic modeling of Lactobacillus casei ssp. rhamnosus growth and lactic acid production in batch cultures under various medium conditions ' (2005 ) 27 Biotechnol. Lett. : 1785 -1789.