Izvorni znanstveni članak
Cotton textiles modified with citric acid as efficient antibacterial agent for prevention of nosocomial infections
Sandra Bischof Vukušić
orcid.org/0000-0003-0385-8267
; University of Zagreb, Faculty of Textile Technology, Zagreb, Croatia
Sandra Flinčec Grgac
orcid.org/0000-0003-4878-1224
; University of Zagreb, Faculty of Textile Technology, Zagreb, Croatia
Ana Budimir
; Clinical Hospital Center, University of Zagreb, Medical School, Zagreb, Croatia
Smilja Kalenić
; Clinical Hospital Center, University of Zagreb, Medical School, Zagreb, Croatia
Sažetak
Aim To study the antimicrobial activity of citric acid (CA)
and sodium hypophosphite monohydrate (SHP) against
gram-positive and gram-negative bacteria, and to determine
the influence of conventional and microwave thermal
treatments, on the effectiveness of antimicrobial treatment
of cotton textiles.
Method Textile material was impregnated with CA and
SHP solution and thermally treated by either conventional
or microwave drying/curing treatment. Antibacterial effectiveness
was tested according to ISO 20743:2009 standard,
using absorption method. The surfaces were morphologically
observed by scanning electron microscopy, while
physical characteristics were determined by wrinkle recovery
angles method (DIN 53 891), tensile strength (DIN 53
837), and whiteness degree method (AATCC 110-2000).
Results Cotton fabric treated with CA and SHP showed
significant antibacterial activity against MRSA (6.38 log10
treated by conventional drying and 6.46 log10 treated by
microwave drying before washing, and 6.90 log10 and 7.86
log10, respectively, after 1 cycle of home domestic laundering
washing [HDLW]). Antibacterial activity was also
remarkable against S. aureus (4.25 log10 by conventional
drying, 4.58 log10 by microwave drying) and against P.
aeruginosa (1.93 log10 by conventional drying and 4.66
log10 by microwave drying). Antibacterial activity against P.
aeruginosa was higher in samples subjected to microwave
than in conventional drying. Antibacterial activity was reduced
after 10 HDLW cycles but the compound was still
effective. The surface of the untreated cotton polymer was
smooth, while minor erosion stripes appeared on the surfaces
treated with antimicrobial agent, and long and deep
stripes were found on the surface of the washed sample.
Conclusion CA can be used both for the disposable (nondurable)
materials (gowns, masks, and cuffs for blood pressure
measurement) and the materials that require durability
to laundering. The current protocols and initiatives in
infection control could be improved by the use of antimicrobial
agents applied on cotton carbohydrate polymer.
Ključne riječi
MRSA; antimicrobial finishing; cotton polymer; Citric Acid; SEM analyses
Hrčak ID:
78194
URI
Datum izdavanja:
15.2.2011.
Posjeta: 2.421 *