Influence of the phosphorus and nitrogen source on nisin production in Lactococcus lactis subsp. lactis batch fermentations using a complex medium

1993 ◽  
Vol 40 (1) ◽  
pp. 17-22 ◽  
Author(s):  
Luc De Vuyst ◽  
Erick J. Vandamme
Keyword(s):  
Nitrogen Source ◽  
Lactococcus Lactis ◽  
Complex Medium ◽  
Nisin Production ◽  
Lactococcus Lactis Subsp

Dynamic mathematical models to describe the growth and nisin production by Lactococcus lactis subsp. lactis CECT 539 in both batch and re-alkalized fed-batch cultures

2007 ◽  
Vol 82 (2) ◽  
pp. 103-113 ◽  
Author(s):  
Nelson P. Guerra ◽  
Ana Torrado Agrasar ◽  
Cristina López Macías ◽  
Paula Fajardo Bernárdez ◽  
Lorenzo Pastrana Castro
Keyword(s):  
Mathematical Models ◽  
Lactococcus Lactis ◽  
Fed Batch ◽  
Nisin Production ◽  
Batch Cultures ◽  
Lactococcus Lactis Subsp

Enhancement of Nisin Production by Lactococcus lactis subsp. lactis

2016 ◽  
Vol 8 (3) ◽  
pp. 170-175 ◽  
Author(s):  
Dominic Dussault ◽  
Khanh Dang Vu ◽  
Monique Lacroix
Keyword(s):  
Lactococcus Lactis ◽  
Nisin Production ◽  
Lactococcus Lactis Subsp

Enhanced nisin production by increasing genes involved in nisin Z biosynthesis in Lactococcus lactis subsp. lactis A164

2005 ◽  
Vol 27 (3) ◽  
pp. 155-160 ◽  
Author(s):  
Chan-Ick Cheigh ◽  
Hoon Park ◽  
Hak-Jong Choi ◽  
Yu-Ryang Pyun
Keyword(s):  
Lactococcus Lactis ◽  
Nisin Production ◽  
Lactococcus Lactis Subsp ◽  
Nisin Z

scholarly journals Utilization of UF-Permeate for Production of β-galactosidase by Lactic Acid Bacteria

2011 ◽  
Vol 60 (2) ◽  
pp. 139-144 ◽  
Author(s):  
H.A. MURAD ◽  
R.I. REFAEA ◽  
E.M. ALY
Keyword(s):  
Nitrogen Source ◽  
Lactococcus Lactis ◽  
Lactobacillus Reuteri ◽  
Incubation Temperature ◽  
Ammonium Phosphate ◽  
Lactobacillus Bulgaricus ◽  
Lactococcus Lactis Subsp ◽  
Lactose Concentration ◽  
Initial Ph ◽  
Beta Galactosidase

Four lactobacilli strains (Lactobacillus bulgaricus, Lactobacillus acidophilus, Lactobacilus casei and Lactobacillus reuteri) were grown in MRS broth and three lactococci strains (Streptococcus thermophilus, Lactococcus lactis subsp. Lactis and Lactococcus lactis subsp. lactis biovar. diacetilactis) were grown in M17 broth. L. reuteri and S. thermophilus were chosen on the basis of the best mean beta-galactosidase activity of 10.44 and 10.01 U/ml respectively, for further studies on permeate-based medium. The maximum production of beta-galactosidase by L. reuteri was achieved at lactose concentration of 6%, initial pH 5.0-7.5, ammonium phosphate as nitrogen source at a concentration of 0.66 g N/L and incubation temperature at 30 degrees C/24 hrs to give 6.31 U/ml. While in case of S. thermophilus, maximum beta-galactosidase production was achieved at 10% lactose concentration of permeate medium, supplemented with phosphate buffer ratio of 0.5:0.5 (KH2PO4:K2HPO4, g/L), at initial pH 6.0-6.5, ammonium phosphate (0.66g N/L) as nitrogen source and incubation temperature 35 degrees C for 24 hrs to give 7.85 U/ml.

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