Abstract:
The development of new biomaterials with improved properties is becoming increasingly
important in a wide range of applications. However, some of the most sought-after
properties are anti-microbial properties, which can help prevent unwanted wound
infections, especially in the face of growing antibiotic resistance of bacteria. The aim
of the study was to study the effect of antimicrobial biomaterials based on calcium
alginate, as a polymer system of local prolonged delivery of quaternary ammonium
compounds, on reference and clinical strains of microorganisms. Samples of
antimicrobial biomaterials contained decamethoxin (0.03-0.07 wt%), and polymers
(polyvinyl alcohol and calcium alginate). Reference and clinical strains of Staphylococcus
aureus, Escherichia coli, Acinetobacter baumannii, Klebsiella pneumoniae,
Pseudomonas aeruginosa were used for the study. The sensitivity of strains of
microorganisms was determined by the disk-diffusion method according to the generally
accepted method. The result of antimicrobial activity was assessed after 24 hours. The
mean (M), the mean error of the mean (± m), and the criterion for the significance of
differences (p) were calculated. The presence of differences between the research
data was assessed by the Student's t-criterion. The results were considered reliable at
p<0.05. High antimicrobial properties of the studied samples of antimicrobial
biomaterials based on calcium alginate and decamethoxin have been established. It
was revealed that the samples of polymeric biomaterials have a higher activity against
gram-positive microorganisms compared to gram-negative strains. The composition
is not inferior to the antimicrobial effect of a solution of decamethoxin and chlorhexidine
in relation to all strains of microorganisms.
