Your browser doesn't support javascript.
loading
Stability of antimicrobial activity of peracetic acid solutions used in the final disinfection process
COSTA, Solange Alves da Silva; PAULA, Olívia Ferreira Pereira de; SILVA, Célia Regina Gonçalves e; LEÃO, Mariella Vieira Pereira; SANTOS, Silvana Soléo Ferreira dos.
  • COSTA, Solange Alves da Silva; Universidade de Taubaté. Department of Dentistry. Taubaté. BR
  • PAULA, Olívia Ferreira Pereira de; Universidade de Taubaté. Department of Dentistry. Taubaté. BR
  • SILVA, Célia Regina Gonçalves e; Universidade de Taubaté. Department of Dentistry. Taubaté. BR
  • LEÃO, Mariella Vieira Pereira; Universidade de Taubaté. Department of Dentistry. Taubaté. BR
  • SANTOS, Silvana Soléo Ferreira dos; Universidade de Taubaté. Department of Dentistry. Taubaté. BR
Braz. oral res. (Online) ; 29(1): 1-6, 2015. tab
Article in English | LILACS | ID: lil-777251
Responsible library: BR1.1
ABSTRACT
The instruments and materials used in health establishments are frequently exposed to microorganism contamination, and chemical products are used before sterilization to reduce occupational infection. We evaluated the antimicrobial effectiveness, physical stability, and corrosiveness of two commercial formulations of peracetic acid on experimentally contaminated specimens. Stainless steel specimens were contaminated with Staphylococcus aureus, Escherichia coli, Candida albicans, blood, and saliva and then immersed in a ready peracetic acid solution 2% Sekusept Aktiv (SA) or 0.25% Proxitane Alpha (PA), for different times. Then, washes of these instruments were plated in culture medium and colony-forming units counted. This procedure was repeated six times per day over 24 non-consecutive days. The corrosion capacity was assessed with the mass loss test, and the concentration of peracetic acid and pH of the solutions were measured with indicator tapes. Both SA and PA significantly eliminated microorganisms; however, the SA solution was stable for only 4 days, whereas PA remained stable throughout the experiment. The concentration of peracetic acid in the SA solutions decreased over time until the chemical was undetectable, although the pH remained at 5. The PA solution had a concentration of 500-400 mg/L and a pH of 2-3. Neither formulation induced corrosion and both reduced the number of microorganisms (p = 0.0001). However, the differences observed in the performance of each product highlight the necessity of establishing a protocol for optimizing the use of each one.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Peracetic Acid / Stainless Steel / Disinfection / Disinfectants Type of study: Evaluation studies Limits: Humans Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2015 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade de Taubaté/BR

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Index: LILACS (Americas) Main subject: Peracetic Acid / Stainless Steel / Disinfection / Disinfectants Type of study: Evaluation studies Limits: Humans Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2015 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade de Taubaté/BR