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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Autores principales: Ifeanyi T. Nzekwe, Onyedika I. Agwuka, Moses U. Okezie, Daniel O. Fasheun, Petra O. Nnamani, Chukwuma O. Agubata
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Lenguaje:EN
Publicado: SpringerOpen 2021
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Acceso en línea:https://doaj.org/article/a045d41f187740208439a680cdc11d09
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spelling 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)
institution DOAJ
collection DOAJ
language EN
topic Alcohol
Sanitizer
Disinfection
Stability
Additives
Therapeutics. Pharmacology
RM1-950
Pharmacy and materia medica
RS1-441
spellingShingle 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
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