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  • 标题:Artisanal Coalho cheeses as source of beneficial Lactobacillus plantarum and Lactobacillus rhamnosus strains
  • 本地全文:下载
  • 作者:Karina Maria Olbrich dos Santos ; Antônio Diogo Silva Vieira ; Flávia Carolina Alonso Buriti
  • 期刊名称:Dairy Science & Technology
  • 印刷版ISSN:1958-5586
  • 电子版ISSN:1958-5594
  • 出版年度:2015
  • 卷号:95
  • 期号:2
  • 页码:209-230
  • DOI:10.1007/s13594-014-0201-6
  • 语种:English
  • 出版社:EDP Sciences
  • 摘要:

    Based on screening for potential beneficial lactic acid bacteria from Coalho cheese produced in the North-East region of Brazil, eight strains belonging to Lactobacillus rhamnosus and Lactobacillus plantarum were selected. All investigated strains presented low levels of hydrophobicity. Different levels of coaggregation were observed for tested Lb. rhamnosus and Lb. plantarum with Listeria monocytogenes . All strains were able to grow in presence of 0.5% of the sodium salts of taurocholic acid (TC), taurodeoxycholic acid (TDC), and glycocholic acid (GC) and showed the ability to deconjugate only TC, TDC, and GC. Investigated Lb. rhamnosus and Lb. plantarum strains showed good survival when exposed to the conditions simulating the GIT conditions. Lb. rhamnosus and Lb. plantarum strains were tested for presence of virulence, antibiotic resistance, and biogenic amine production genes. In addition, minimum inhibititory concentration (MIC) of selected antibiotics was determined. Production of antimicrobial peptides (bacteriocins) was investigated. However, only Lb. rhamnosus EM253 produced bacteriocin at level 800 arbitrary unit (AU) mL−1 against L. monocytogenes 211. The bacteriocin remained stable at pH from 2.0 to 10.0 and after exposure at 100 °C for 120 min and in presence of surfactants and salts. Studied Lb. rhamnosus and Lb. plantarum strains showed good potential to be applied as a functional coculture/s with beneficial properties in the production of Coalho cheese.

    Keywords Lactobacillus plantarum Lactobacillus rhamnosus Probiotics Bacteriocin Dairy products Virulence
  • 关键词:Lactobacillus plantarum ; Lactobacillus rhamnosus ;Probiotics ;Bacteriocin ;Dairy products ;Virulence
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