Designing an ideal alcohol-based hand sanitizer: in vitro antibacterial responses of ethanol and isopropyl alcohol solutions to changing composition
Abstract This study aimed to achieve an in vitro quantification of the effects of composition and formulation factors on the killing rates of alcohol-based hand sanitizers. The killing rates of 85% ethyl alcohol (ET) and isopropyl alcohol (IPA) were studied under different conditions such as pH, ele...
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2021
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oai:doaj.org-article:a045d41f187740208439a680cdc11d092021-11-28T12:15:12ZDesigning an ideal alcohol-based hand sanitizer: in vitro antibacterial responses of ethanol and isopropyl alcohol solutions to changing composition10.1186/s41120-021-00038-x2364-9534https://doaj.org/article/a045d41f187740208439a680cdc11d092021-11-01T00:00:00Zhttps://doi.org/10.1186/s41120-021-00038-xhttps://doaj.org/toc/2364-9534Abstract This study aimed to achieve an in vitro quantification of the effects of composition and formulation factors on the killing rates of alcohol-based hand sanitizers. The killing rates of 85% ethyl alcohol (ET) and isopropyl alcohol (IPA) were studied under different conditions such as pH, electrolyte concentration, or inclusion of herbal extracts (cucumber, carrot, and aloe vera), a quaternary ammonium compound, or thickener over different time intervals. Changes in the activities were retested after 3 months as an indication of stability. From two-way ANOVA, both the time of exposure and the sanitizer type affected the activity against Staphylococcus aureus (P = 0.001 for both alcohols), whereas for Escherichia coli, time of exposure was significant (P = 0.027), while sanitizer type was less significant (P = 0.063). Extreme pHs, the presence of ions, and the inclusion of additives such as benzalkonium chloride (BAC), plant extracts, or carbomer impacted the 3-month activity of the samples differently. Important differences existing in the activities of ET and IPA, as a function of formulation factors or use conditions have been quantified using in vitro methods. Formulations should best be tailored for particular purposes and the all-purpose hand sanitizer may not exist. Graphic AbstractIfeanyi T. NzekweOnyedika I. AgwukaMoses U. OkezieDaniel O. FasheunPetra O. NnamaniChukwuma O. AgubataSpringerOpenarticleAlcoholSanitizerDisinfectionStabilityAdditivesTherapeutics. PharmacologyRM1-950Pharmacy and materia medicaRS1-441ENAAPS Open, Vol 7, Iss 1, Pp 1-11 (2021) |
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Alcohol Sanitizer Disinfection Stability Additives Therapeutics. Pharmacology RM1-950 Pharmacy and materia medica RS1-441 |
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Alcohol Sanitizer Disinfection Stability Additives Therapeutics. Pharmacology RM1-950 Pharmacy and materia medica RS1-441 Ifeanyi T. Nzekwe Onyedika I. Agwuka Moses U. Okezie Daniel O. Fasheun Petra O. Nnamani Chukwuma O. Agubata Designing an ideal alcohol-based hand sanitizer: in vitro antibacterial responses of ethanol and isopropyl alcohol solutions to changing composition |
description |
Abstract This study aimed to achieve an in vitro quantification of the effects of composition and formulation factors on the killing rates of alcohol-based hand sanitizers. The killing rates of 85% ethyl alcohol (ET) and isopropyl alcohol (IPA) were studied under different conditions such as pH, electrolyte concentration, or inclusion of herbal extracts (cucumber, carrot, and aloe vera), a quaternary ammonium compound, or thickener over different time intervals. Changes in the activities were retested after 3 months as an indication of stability. From two-way ANOVA, both the time of exposure and the sanitizer type affected the activity against Staphylococcus aureus (P = 0.001 for both alcohols), whereas for Escherichia coli, time of exposure was significant (P = 0.027), while sanitizer type was less significant (P = 0.063). Extreme pHs, the presence of ions, and the inclusion of additives such as benzalkonium chloride (BAC), plant extracts, or carbomer impacted the 3-month activity of the samples differently. Important differences existing in the activities of ET and IPA, as a function of formulation factors or use conditions have been quantified using in vitro methods. Formulations should best be tailored for particular purposes and the all-purpose hand sanitizer may not exist. Graphic Abstract |
format |
article |
author |
Ifeanyi T. Nzekwe Onyedika I. Agwuka Moses U. Okezie Daniel O. Fasheun Petra O. Nnamani Chukwuma O. Agubata |
author_facet |
Ifeanyi T. Nzekwe Onyedika I. Agwuka Moses U. Okezie Daniel O. Fasheun Petra O. Nnamani Chukwuma O. Agubata |
author_sort |
Ifeanyi T. Nzekwe |
title |
Designing an ideal alcohol-based hand sanitizer: in vitro antibacterial responses of ethanol and isopropyl alcohol solutions to changing composition |
title_short |
Designing an ideal alcohol-based hand sanitizer: in vitro antibacterial responses of ethanol and isopropyl alcohol solutions to changing composition |
title_full |
Designing an ideal alcohol-based hand sanitizer: in vitro antibacterial responses of ethanol and isopropyl alcohol solutions to changing composition |
title_fullStr |
Designing an ideal alcohol-based hand sanitizer: in vitro antibacterial responses of ethanol and isopropyl alcohol solutions to changing composition |
title_full_unstemmed |
Designing an ideal alcohol-based hand sanitizer: in vitro antibacterial responses of ethanol and isopropyl alcohol solutions to changing composition |
title_sort |
designing an ideal alcohol-based hand sanitizer: in vitro antibacterial responses of ethanol and isopropyl alcohol solutions to changing composition |
publisher |
SpringerOpen |
publishDate |
2021 |
url |
https://doaj.org/article/a045d41f187740208439a680cdc11d09 |
work_keys_str_mv |
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