Antistaphylococcal potential and application of autochthonous enterococci and lactobacilli in pilot cheese production
Acta Alimentaria(2018)
摘要
This study was undertaken to prepare tailor-made starter culture (TMSC) for Karst ewe’s cheese production. Therefore, basic technological characteristics (growth ability in milk, acid production, and proteolytic activity) and antistaphylococcal potential were assessed for autochthonous enterococci and lactobacilli. Beside good growth in milk with numbers as high as 8 log CFU ml–1, certain enterococci and lactobacilli also reduced pH below 5.0 and showed proteolytic activity. In antistaphylococcal testing, only pure strains of enterococci and lactobacilli were moderately antagonistic, but not in coagulated milks and coagulated milk extracts. Enterococci and lactobacilli with most relevant technological/antistaphylococcal properties were combined and tested as TMSC. In control (C) cheese-making, milk was inoculated with TMSC, while staphylococci (SC) cheese-making included contamination with staphylococci. In C trials, high logarithmic counts per g of cheese for enterococci (8.07–8.80) and lactobacilli (7.4...
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关键词
tailor-made starter culture,enterococci,staphylococci,cheese,RAPD,lactobacilli
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