Exploring the metabolic heterogeneity of coagulase-negative staphylococci to improve the quality and safety of fermented meats: a review

Maria Sanchez Mainar, Despoina Angeliki Stavropoulou, Frederic Leroy

Onderzoeksoutput: Articlepeer review

105 Citaten (Scopus)

Samenvatting

The production of fermented meats, such as fermented sausage, relies on the metabolic activities of lactic acid bacteria and catalase-positive cocci, in particular the group of coagulase-negative staphylococci (CNS). Conventional
use of CNS as meat starter cultures usually leads to an appropriate cured colour development based on their nitrate reductase activity,whereas their catalase activity reduces oxidative damage. In addition, CNSmetabolismcontributes
to flavour, although the precise effects are difficult to estimate. There are reasons to believe that these basic technological features of CNS can be further enlarged by exploring their full metabolic potential. Nonnegligible
differences inmetabolism among and within different species of CNS indicate that a rational selection of strains may lead to the development of novel starter cultures with enhanced functionality. Firstly, the use of CNS strainswith a superior ability to use alternative energy sources, such as nucleosides or arginine,may improve culture competitiveness and survival. Secondly, cured colour generation could be optimised to lower the amounts of curing salts needed, either by selecting for efficient nitrate-reducing CNS strains or by exploring the potential alternative based on nitric oxide synthase activity. Thirdly, CNSwith specific aroma-producing abilities may help to accentuate specific flavours, whereby the selection of wild-type strains from artisan-type
fermented sausages seems attractive in the framework of innovation-through-tradition. Finally, bacteriocin-producing CNS strains may offer solutions for bioprotection towards meat pathogens such as Clostridium botulinum
and Staphylococcus aureus. Overall, making use of the metabolic inter- and intraspecies heterogeneity of CNS is promising for the elaboration of healthier, tastier, and safer fermented meats. Yet, the proposed strategies are
sometimes still overly theoretical and speculative, requiring further proof-of-principle.
Originele taal-2English
Pagina's (van-tot)24-37
TijdschriftInternational Journal of Food Microbiology
Volume247
Vroegere onlinedatum2017
DOI's
StatusPublished - 17 apr 2017

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