Karmen Godič Torkar (Avtor), Martina Oder (Avtor)

Povzetek

The influence of temperature, disinfectant and water softener for drinking water preparation on the bacterial growth of Legionella pneumophila was examined.The optimal temperature for bacterial growth was 36 °C. At the incubation temperature of 15 °C the multiplying of bacteria slowed down, as confirmed by the bacteriostatic effect of this temperature. The number of bacteria was after the first 24 h of incubation at 55 °C reduced by more than 6 log in comparison to the culture at 36 °C. After 10 minutes of exposure to the disinfectant dichloroisocyanuric acid, the number of bacteria in the culture decreased for 1.4 log CFU mL-1, followed by an intensive growth immediately after the disinfectant degradation. The number of bacteria was up to 72 hours incubation even higher than in the control sample without a disinfectant, and then the number in both samples equalled at approximately 7.3 log CFU mL-1. Sodium polyphosphate used as a water softener stimulated the bacterial growth. The largest difference in growth was observed after 72 h of incubation, which was 1.9 log CFU mL-1 higher in samples with sodium polyphosphate in comparison to those without the softener.

Ključne besede

Legionella pneumophila;growth curve;temperature;water softener;disinfectant;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL ZF - Zdravstvena fakulteta
UDK: 614.48:579.841
COBISS: 5590123 Povezava se bo odprla v novem oknu
ISSN: 1854-0678
Matična publikacija: Sanitarno inženirstvo
Št. ogledov: 589
Št. prenosov: 186
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Strani: str. 34-42
Letnik: ǂVol. ǂ12
Zvezek: ǂno. ǂ1
Čas izdaje: 2018
ID: 11305300