Journal
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
Volume 82, Issue 2, Pages 689-695Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.02727-15
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Funding
- Spanish Government through MICIIN [AGL2009-08016/ALI, AGL2010-15529/ALI, AGL2013-48300-R/ALI]
- Junta de Andalucia [P11-AGR-7051]
- Ramon y Cajal postdoctoral research contract (Spanish Government)
- MICIIN
- CSIC
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The present work details the in vitro interactions between Lactobacillus pentosus and yeast strains isolated from table olive processing to form mixed biofilms. Among the different pairs assayed, the strongest biofilms were obtained from L. pentosus and Candida boidinii strain cocultures. However, biofilm formation was inhibited in the presence of D-(+)-mannose. In addition, biofilm formation by C. boidinii monoculture was stimulated in the absence of cell-cell contact with L. pentosus. Scanning electron microscopy revealed that a sort of sticky material formed by the yeasts contributed to substrate adherence. Hence, the data obtained in this work suggest that yeast-lactobacilli biofilms may be favored by the presence of a specific mate of yeast and L. pentosus, and that more than one mechanism might be implicated in the biofilm formation. This knowledge will help in the design of appropriate mixed starter cultures of L. pentosus-yeast species pairs that are able to improve the quality and safety of Spanish-style green table olive processing.
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