Nisin-producing Lactococcus spp. from mayonnaise-based products and their raw materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F10%3A00024158" target="_blank" >RIV/60461373:22330/10:00024158 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Nisin-producing Lactococcus spp. from mayonnaise-based products and their raw materials

Popis výsledku v původním jazyce

Three bacteriocins were purified from lactic acid bacteria isolated from mayonnaise-based finished products and the raw materials used in the production of the finished products. All three bacteriocin-producing strains (EN3a, EN14a, and EN15b) were identified by sequencing of the 16S rDNA as Lactococcus lactis. The RP-HPLC fractions showed strong antimicrobial activity against Listeria monocytogenes. Mass spectrometry analysis of active fractions showed that all strains produced nisin A (3,353.7 Da). These results were confirmed by amplification of nisin structural gene by PCR, by lack of activity against a nisin-producing strain, and by total loss of activity after reaction of purified bacteriocins with glutathione. The strains Lactococcus lactis EN3a, EN14a, and EN15b are the first nisin-producing strains isolated from mayonnaise-based commercial products and from the raw materials used in their production. The ability of these strains to produce nisin could be useful to improve food

Název v anglickém jazyce

Nisin-producing Lactococcus spp. from mayonnaise-based products and their raw materials

Popis výsledku anglicky

Three bacteriocins were purified from lactic acid bacteria isolated from mayonnaise-based finished products and the raw materials used in the production of the finished products. All three bacteriocin-producing strains (EN3a, EN14a, and EN15b) were identified by sequencing of the 16S rDNA as Lactococcus lactis. The RP-HPLC fractions showed strong antimicrobial activity against Listeria monocytogenes. Mass spectrometry analysis of active fractions showed that all strains produced nisin A (3,353.7 Da). These results were confirmed by amplification of nisin structural gene by PCR, by lack of activity against a nisin-producing strain, and by total loss of activity after reaction of purified bacteriocins with glutathione. The strains Lactococcus lactis EN3a, EN14a, and EN15b are the first nisin-producing strains isolated from mayonnaise-based commercial products and from the raw materials used in their production. The ability of these strains to produce nisin could be useful to improve food

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GM - Potravinářství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Food Research and Technology

ISSN

1438-2377

e-ISSN

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Svazek periodika

231

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000276658600016

EID výsledku v databázi Scopus

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