Efficacy of a sanitizer and disinfectants to inactivate Encephalitozoon intestinalis spores.
The order Microsporidia contains a number of ubiquitous pathogens that can infect various animals, including humans. Enterocytozoon bieneusi and Encephalitozoon intestinalis have been associated with gastrointestinal illness in humans. The effect of four disinfectants--ammonium hydroxide, hydrogen peroxide, and two commercial disinfectants containing peroxyacetic acid (Tsunami) and N-alkyl dimethyl benzyl ammonium chloride (Timsen)--on E. intestinalis spores was examined using exposure times of 1, 5, and 15 min. Spore viability was determined in vitro with RK-13 cells. Hydrogen peroxide was most efficient at inactivating microsporidial spores at all tested concentrations and treatment times, whereas ammonium hydroxide was effective only at the highest concentration at all exposure times. Tsunami (40 microg/ml) and Timsen (200 and 400 ppm) could inactivate spores when incubated for 5 and 15 min.
Ortega
Ynes R
YR
Center for Food Safety, Department of Food Science and Technology, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223, USA. ortega@uga.edu
Torres
Maria P
MP
Van Exel
Siara
S
Moss
Lauren
L
Cama
Vitaliano
V
D064753:Ammonium Hydroxide; D015169:Colony Count, Microbial; D004202:Disinfectants / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D016819:Encephalitozoon / Q000502:physiology*; D005506:Food Contamination / Q000032:analysis / Q000517:prevention & control*; D005516:Food Microbiology; D006861:Hydrogen Peroxide / Q000494:pharmacology; D006878:Hydroxides / Q000494:pharmacology; D010463:Peracetic Acid / Q000494:pharmacology; D013172:Spores, Fungal / Q000254:growth & development*; D013997:Time Factors
D004202:Disinfectants; D006878:Hydroxides; D064753:Ammonium Hydroxide; D006861:Hydrogen Peroxide; D010463:Peracetic Acid