Llama sausage is still produced following artisanal procedures, with the autochthonous microbiota being mainly responsible for the fermentation process. In this work, the taxonomical identification and technological-safety criteria of coagulase-negative staphylococci (CNS) isolated from two different productions of llama sausages (P: pilot and A: artisanal) were investigated. () and were the species most frequently found in P production, followed by and a wider species variability was observed in A factory being and as the main identified species. The technological characterization of 28 CNS strains showed their ability to hydrolyze gelatin and tributyrin together with a relevant nitrate reductase activity. Phenotypic and genotypic approaches were conducted to investigate the main safety traits. Llama's CNS strains exhibited weak decarboxylase and hemolytic activity and low biofilm production; additionally, no enterotoxin genes were detected. Correlation analysis between phenotypic and genotypic data showed low values for the biofilm parameters, while high correlation was observed for oxacillin, ampicillin, tetracycline and aminoglycosides resistance and their genetic determinants. Data obtained may contribute to broaden knowledge about the autochthonous strains of this poorly studied fermented product, thus helping to select an appropriate combination of potential starter cultures to improve llama sausage safety and quality.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7284484 | PMC |
| http://dx.doi.org/10.3390/microorganisms8050629 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Bacterial isolates and drug susceptibility patterns in infected lesions of cutaneous leishmaniasis patients at ALERT hospital, Addis Ababa, Ethiopia.
BMC Infect Dis
January 2025
Department of Medical Laboratory Sciences, College of Health Sciences, Addis Ababa University, Addis Ababa, P.O. Box 9086, Addis Ababa, Ethiopia.
Bacterial infections commonly complicate cutaneous leishmaniasis (CL), worsening the disease and delaying healing. Despite this, there is a gap in research concerning the characteristics of pathogenic microorganisms associated in CL patients. This study aims to identify bacterial isolates and drug susceptibility patterns in CL patients.
View Article and Find Full Text PDF[Investigation of sasX, ACME and Various Virulence Factors in Coagulase Negative Staphylococcal Strains Identified as Bloodstream Infection Agents and Contamination].
Mikrobiyol Bul
October 2024
Pamukkale University Faculty of Medicine, Department of Medical Microbiology, Denizli, Türkiye.
The aim of this study was to investigate the frequency of sasX, arginine catabolic mobile element (ACME) genes, biofilm formation and some biofilm related virulence factor genes in causative and contaminant coagulase negative staphylococci (CNS) strains isolated from blood cultures. Of the 150 CNS strains included in the study, 50 were grouped as infectious agents and 100 as contaminants. Biofilm formation of the strains was investigated by microplate method and the presence of sasX, ACME, mecA and biofilm associated virulence factor genes icaA, icaD, aap, bhp and IS256 were investigated by inhouse polymerase chain reaction method.
View Article and Find Full Text PDFDeciphering pathogenicity and virulence of the first isolate from diabetic foot osteomyelitis.
Front Cell Infect Microbiol
January 2025
VBIC, INSERM U1047, University of Montpellier, Montpellier, France.
Introduction: This study identifies as a new coagulase-negative staphylococcal species isolated from diabetic foot osteomyelitis (DFOM) and provides an in-depth analysis of its pathogenic and virulence profile, as well as demonstrating its potential to cause infection.
Methods: The NSD001 strain was examined for its planktonic growth, biofilm production, and phagocytosis rates in murine macrophages compared to NSA739. Additionally, persistence and replication within human osteoblasts were investigated, while the zebrafish embryo model was employed to assess virulence.
Bacteriological Profile and Antibiogram of Blood Stream Infection in a Tertiary Teaching Hospital of Bangladesh.
Mymensingh Med J
January 2025
Professor Dr Khandaker Abu Talha, Professor, Department of Neurosurgery, Sylhet Women's Medical College (SWMC), Sylhet, Bangladesh; E-mail:
Blood stream infection (BSI) is of the most devastating infection of any hospital which has a high mortality. Staphylococcus aureus, coagulase-negative staphylococci (CONS) and enterococcus species are commonest isolated bacteria. This was a cross-sectional descriptive study conducted at the Sylhet Women's Medical College Hospital from October 2022 to March 2023.
View Article and Find Full Text PDFSince the era of the widespread introduction of antibiotics into the human sphere of activity, the problem of antimicrobial resistance has become an urgent and very important topic around the world. Recently, coagulasonegative staphylococci (CoNS), which are representatives of opportunistic microorganisms of the microbiome of the skin and mucous membranes of healthy people, have made a certain contribution to its progression. For a long time, they did not pose a threat to patients, but in recent decades among microorganisms they have been seeded in more than two-thirds of patients with postoperative mediastinitis, catheter-associated infections, as well as from wounds of the neck vessels and the inguinal region separated by pacemaker beds.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!