Efficiency on fungal inhibition of benzalkonium chloride and lemongrass essential oil on polyester fabric

Abstract

These days, people spend most of their time indoors as a result indoor air quality is a great concern. Mold growth in indoor environment may significantly contribute to unhealthy air quality and to deterioration of building materials. Upholstery fabrics are made of polyester fabrics, on which fungi can grow. Besides, fungi naturally grow in a high humidity condition, seem expected in dwellings and buildings with limit ventilation. This study applied Benzalkonium Chloride and lemongrass essential oil to inhibit the fungal growth on fabrics. Aspergillus niger, a prevalent airborne fungus, was tested on polyester fabrics including, TC fabric (65% polyester/35% cotton), and TK fabric (100% polyester), according to AATCC Test Method 20-2008, 30-2004 Section III, and 81-2006. The results indicated that BKC was more applicable than lemongrass essential oil regarding minimum inhibitory concentration and cost of fungicides. One percent and 5% BKC are suitable to inhibit the fungal growth on TC and TK fabrics, respectively. Effective duration of 1% BKC and 5% BKC are 18 and 30 days, respectively. Furthermore, both fabrics were not damaged by 1% BKC and 5% BKC when inspected under the microscope. In conclusion, BKC would be recommended for inhibiting fungal growth on polyester fabrics.