Optimization of fermentation parameters for the production of concentrated starters from nonbitter Streptococcus lactis INIA 12
Streptococcus lactis INIA 12, a selected nonbitter strain, reached its maximum counts and its highest lactic acid production in a culture medium containing 125 g/L skim milk powder, fortified with 5 g/L yeast extract and digested with 10 ppm papain for 20 min at 65°C. Lactose added to the medium did not enhance growth rate or biomass production. A growth temperature of 32°C and the maintenance of pH at 6.80, with 10N NaOH as the neutralizer, were the optimum fermentation parameters in batch cultures. In ten 40‐L fermentations carried out at 32°C and pH 6.80, with a 5% inoculum, a 0.2 kg/cm2 nitrogen head space pressure and a stirring rate of 80 rpm, maximum counts of S. lactis (1010 CFU/mL) were reached after incubation for 6 hr at 32°C and pH 6.80. Copyright © 1988, Wiley Blackwell. All rights reserved
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1988
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dig-inia-es-10261-2910422023-02-17T12:32:12Z Optimization of fermentation parameters for the production of concentrated starters from nonbitter Streptococcus lactis INIA 12 Chavarri, F. J. De Paz, M. Núñez Gutiérrez, Manuel Streptococcus lactis INIA 12, a selected nonbitter strain, reached its maximum counts and its highest lactic acid production in a culture medium containing 125 g/L skim milk powder, fortified with 5 g/L yeast extract and digested with 10 ppm papain for 20 min at 65°C. Lactose added to the medium did not enhance growth rate or biomass production. A growth temperature of 32°C and the maintenance of pH at 6.80, with 10N NaOH as the neutralizer, were the optimum fermentation parameters in batch cultures. In ten 40‐L fermentations carried out at 32°C and pH 6.80, with a 5% inoculum, a 0.2 kg/cm2 nitrogen head space pressure and a stirring rate of 80 rpm, maximum counts of S. lactis (1010 CFU/mL) were reached after incubation for 6 hr at 32°C and pH 6.80. Copyright © 1988, Wiley Blackwell. All rights reserved 2023-02-17T12:32:12Z 2023-02-17T12:32:12Z 1988 artículo Journal of Food Science 53(6): 1854-1857 (1988) 0022-1147 http://hdl.handle.net/20.500.12792/5854 http://hdl.handle.net/10261/291042 10.1111/j.1365-2621.1988.tb07860.x 1750-3841 en none Wiley |
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Streptococcus lactis INIA 12, a selected nonbitter strain, reached its maximum counts and its highest lactic acid production in a culture medium containing 125 g/L skim milk powder, fortified with 5 g/L yeast extract and digested with 10 ppm papain for 20 min at 65°C. Lactose added to the medium did not enhance growth rate or biomass production. A growth temperature of 32°C and the maintenance of pH at 6.80, with 10N NaOH as the neutralizer, were the optimum fermentation parameters in batch cultures. In ten 40‐L fermentations carried out at 32°C and pH 6.80, with a 5% inoculum, a 0.2 kg/cm2 nitrogen head space pressure and a stirring rate of 80 rpm, maximum counts of S. lactis (1010 CFU/mL) were reached after incubation for 6 hr at 32°C and pH 6.80. Copyright © 1988, Wiley Blackwell. All rights reserved |
format |
artículo |
author |
Chavarri, F. J. De Paz, M. Núñez Gutiérrez, Manuel |
spellingShingle |
Chavarri, F. J. De Paz, M. Núñez Gutiérrez, Manuel Optimization of fermentation parameters for the production of concentrated starters from nonbitter Streptococcus lactis INIA 12 |
author_facet |
Chavarri, F. J. De Paz, M. Núñez Gutiérrez, Manuel |
author_sort |
Chavarri, F. J. |
title |
Optimization of fermentation parameters for the production of concentrated starters from nonbitter Streptococcus lactis INIA 12 |
title_short |
Optimization of fermentation parameters for the production of concentrated starters from nonbitter Streptococcus lactis INIA 12 |
title_full |
Optimization of fermentation parameters for the production of concentrated starters from nonbitter Streptococcus lactis INIA 12 |
title_fullStr |
Optimization of fermentation parameters for the production of concentrated starters from nonbitter Streptococcus lactis INIA 12 |
title_full_unstemmed |
Optimization of fermentation parameters for the production of concentrated starters from nonbitter Streptococcus lactis INIA 12 |
title_sort |
optimization of fermentation parameters for the production of concentrated starters from nonbitter streptococcus lactis inia 12 |
publisher |
Wiley |
publishDate |
1988 |
url |
http://hdl.handle.net/20.500.12792/5854 http://hdl.handle.net/10261/291042 |
work_keys_str_mv |
AT chavarrifj optimizationoffermentationparametersfortheproductionofconcentratedstartersfromnonbitterstreptococcuslactisinia12 AT depazm optimizationoffermentationparametersfortheproductionofconcentratedstartersfromnonbitterstreptococcuslactisinia12 AT nunezgutierrezmanuel optimizationoffermentationparametersfortheproductionofconcentratedstartersfromnonbitterstreptococcuslactisinia12 |
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1767603169662074880 |