期刊
PROBIOTICS AND ANTIMICROBIAL PROTEINS
卷 9, 期 4, 页码 466-472出版社
SPRINGER
DOI: 10.1007/s12602-017-9292-8
关键词
Pediococcus pentosaceus; Lactic acid bacteria; Bacteriocin; Pediocin; Sucrose; Inulin
资金
- Brazilian CAPES [A003_ 2013, 2609/2013, 88881.062223/2014-01]
Sucrose and inulin, when combined with glucose, behaved as stimulating agents of bacteriocin production by Pediococcus pentosaceus ATCC 43200. When such microbial strain was grown in glucose-based Man, Rogosa, and Sharpe (MRS) medium, without any additional supplement, it showed higher maximum cell concentration (2.68 +/- 1.10 g/L) and longer generation time (2.17 +/- 0.02 h), but lower specific growth rate (0.32 +/- 0.01 h(-1)) than in the same medium supplemented with 1.0% of both ingredients (2.53 +/- 1.10 g/L, 1.60 +/- 0.05 h and 0.43 +/- 0.02 h(-1), respectively). Glucose replacement by sucrose or inulin almost completely suppressed growth, hence confirming that it is the preferred carbon source for this strain. Qualitatively, similar results were observed for lactate production, which was 59.8% higher in glucose- based medium. Enterococcus and Listeria strains were sensitive to bacteriocin, whose antimicrobial effect after 8 h increased from 120.25 +/- 0.35 to 144.00 +/- 1.41 or 171.00 +/- 1.41 AU/mL when sucrose or inulin was added to the glucose-basedMRS medium. Sucrose and inulin were also able to speed up P. pentosaceus growth in the exponential phase.
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