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Indian Journal of Biochemistry and Biophysics (IJBB) >
IJBB Vol.45 [2008] >
IJBB Vol.45(2) [April 2008] >
| Title: | Optimized culture conditions for bacteriocin production by Pediococcus acidilactici LAB 5 and its characterization |
| Authors: | Mandal, Vivekananda
Sen, Sukanta Kumar
Mandal, Narayan Chandra |
| Keywords: | Antibacterial
Bacteriocin
Cystibiotics
Pediococcus acidilactici |
| Issue Date: | Apr-2008 |
| Publisher: | CSIR |
| Abstract: | A strain of Pediococcus acidilactici LAB 5 was isolated from vacuum-packed fermented meat product, in order to
obtain a novel bacteriocin from food-grade organisms. Optimized culture conditions for bacteriocin production in different
media (viz., MRS, TGE, TGE + buffer, TGE + Tween 80, and TGE + Tween 80 + buffer) and at different temperatures and
pH conditions were reported. TGE + Tween 80 + buffer medium was found to be most effective for bacteriocin production
(about 2,400 AU/ ml) by this strain, when incubated at 37°C for 24 h. Bacteriocin, partially purified by adsorptiondesorption
method showed molecular mass of 10.3 kDa and produced prominent inhibition zone in activity gel. It showed
significant storage stability both at high as well as in low temperatures for up to 6 months and retained its activity in a
number of organic solvents, except in 2-mercaptoethanol. The treatment with amylase and lysozyme did not change its
activity, but it lost its activity on proteinase K treatment. Antibacterial efficacy of bacteriocin was proved against some food
spoilage and human pathogenic bacteria like Enterococcus, Leuconostoc, Listeria, Staphylococcus and Streptococcus. |
| Page(s): | 106-110 |
| ISSN: | 0301-1208 |
| Source: | IJBB Vol.45(2) [April 2008]
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