Iityuwa ze-quaternary ammonium (QAS) ziikhompawundi ze-cationic eziqulathe amaqela e-alkyl kubude be-chain ye-C8–C18, ezinyibilikayo emanzini kwaye zingasetyenziswa njengezibulali-ntsholongwane kwimizi-mveliso yelaphu.
Ii-QAS ziikhompawundi ze-ionic ezine-quaternary ammonium nitrogen, amaqela amane e-alkyl okanye e-aryl adibene nale nitrogen, kunye ne-anionic ion efana ne-chloride okanye i-bromide. Phakathi kwamaqela amane e-alkyl, elinye liqela elide le-alkyl chain eliqulethe ii-hydrocarbons ezingaphezu kwesibhozo kwaye likwasebenza njengeqela le-hydrophobic. Amaqela e-hydrophobic kwi-QAS adla ngokuchaphazela imisebenzi yawo yokulwa ne-antimicrobial (Tiller et al., 2001; Zhao and Sun, 2007). Ngokungabi na-hydrophobic enamandla, imisebenzi enamandla ye-antimicrobial i-QAS enayo (Zhao and Sun, 2008) (Umzobo 16.1 kunye neTheyibhile 16.1). Iikhompawundi ezininzi ze-QAS zinemisebenzi ye-surfactant. Ii-QAS zii-biocides ezisebenzayo xa zisetyenziswa kwizisombululo zamanzi kunye njengezibulali-ntsholongwane zolwelo. Xa ii-QAS zidibene ngeekhemikhali kwiindawo zefayibha imisebenzi yazo inokuphazamiseka kuxhomekeke kwindlela ezidibene ngayo kunye nezakhiwo zokugqibela ze-QAS kwiindawo. I-QAS efakwe ngokwasemzimbeni kwiifayibha inokubonelela ngemisebenzi yokulwa neentsholongwane ngokuyikhulula kancinci kancinci kwiindawo zefayibha ngexesha lokusetyenziswa, nto leyo enokubonelela ngemisebenzi ecetywayo yezinto.
Uxinzelelo lunokubangela ukuncipha kweebhaktheriya nge-6-log ngexesha lokudibana
| QAS | Umzuzu o-1 (I-E. coli(ppm) | imizuzu emi-5 (I-E. coli(ppm) | Umzuzu o-1 (S.aureus(ppm) | imizuzu emi-5 (S. aureus(ppm) |
| I-ALPC | 100 | 100 | 100 | 50 |
| I-AALPC | 100 | 100 | 100 | 50 |
| I-BADPB | 50 | 50 | 50 | 10 |
| I-NADPB | 50 | 10 | 50 | 10 |
Ixesha lokuthumela: Epreli-16-2021