Air dispersed essential oils combined with standard sanitization procedures for environmental microbiota control in nosocomial hospitalization rooms

Gelmini, Fabrizio; Belotti, Luciano; Vecchi, Sara; Testa, Cristian; Beretta, Giangiacomo

doi:10.1016/j.ctim.2016.02.004

Cited by 14 publications

(6 citation statements)

References 14 publications

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“…Therefore, there has been growing attention to the discovery and investigation of safe, effective and natural antioxidant bioactive molecules because they can defend the human body from free radicals and delay the development of several chronic or acute illnesses [10]. The antimicrobial molecules found in aromatic and medicinal plants are of interest because multidrug resistant bacteria are now becoming a global community health alarm, particularly in terms of foodborne infections and nosocomial contaminations [11][12][13]. Several studies have reported antiseptic, anti-inflammatory, wound-healing, analgesic, antioxidant and free radical-scavenging activities [14] from aromatic and medicinal plants, herbs, spices and EOs and, in most cases, a direct food-related application has been verified [15].…”

Section: Introductionmentioning

confidence: 99%

Eucalyptus globulus Essential Oil as a Natural Food Preservative: Antioxidant, Antibacterial and Antifungal Properties In Vitro and in a Real Food Matrix (Orangina Fruit Juice)

et al. 2020

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The potential application of Eucalyptus globulus essential oil (EGEO) as a natural beverage preservative is described in this research. The chemical composition of EGEO was determined using gas chromatography analyses and revealed that the major constituent is 1,8-cineole (94.03% ± 0.23%). The in vitro antioxidant property of EGEO was assessed using different tests. Percentage inhibitions of EGEO were dose-dependent. In addition, EGEO had a better metal ion chelating effect with an IC50 value of 8.43 ± 0.03 mg/mL, compared to ascorbic acid (140.99 ± 3.13 mg/mL). The in vitro antimicrobial effect of EGEO was assessed against 17 food spoilage microorganisms. The diameter of the inhibitory zone (DIZ) ranged from 15 to 85 mm for Gram-positive bacteria and from 10 to 49 mm for yeast strains. Candida albicans, C.parapsilosis and Saccharomyces cerevisiae were the most sensitive fungal species to the EGEO vapor with DIZ varying from 59 to 85 mm. The anti-yeast effectiveness of EGEO alone and in association with heat processing was estimated in a real juice matrix (Orangina fruit juices) in a time-dependent manner. The combination of EGEO-heat treatment (70 °C for 2 min) at different concentrations (0.8 to 4 µL/mL) was effective at reducing S. cerevisiae growth in the fruit juice of Orangina, compared to juice preserved with synthetic preservatives. Current findings suggest EGEO as an effective and potent inhibitor of food spoilage fungi in a real Orangina juice, and might be a potential natural source of preservative for the food industry.

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Section: Introductionmentioning

confidence: 99%

Eucalyptus globulus Essential Oil as a Natural Food Preservative: Antioxidant, Antibacterial and Antifungal Properties In Vitro and in a Real Food Matrix (Orangina Fruit Juice)

et al. 2020

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“…Hydrogen peroxide vapor was identified in 18% of studies [ 70 , 72 , 77 , 85 , 86 , 99 , 111 , 117 , 122 , 125 , 129 , 130 , 141 , 142 , 193 , 194 , 195 , 196 , 197 , 198 , 199 , 200 , 201 , 202 , 203 , 204 , 205 , 206 , 207 , 208 , 209 , 210 , 211 ]. Other vaporized disinfection methods, which included chlorine dioxide, sodium hypochlorite, essential oils, formalin, QACs, glutaral, beta propiolactone, steam, acidic electrolytic water, ozone, and steam, were identified in 10% of studies [ 70 , 84 , 137 , 203 , 212 , 213 , 214 , 215 , 216 , 217 , 218 , 219 , 220 , 221 , 222 , 223 ].…”

Section: Resultsmentioning

confidence: 99%

“…Safety criteria ensure that the disinfectant does not have unintended side effects. We identified themes around disinfectants contributing to chemical or antimicrobial resistance (e.g., [ 44 , 62 , 69 , 110 , 158 ]) and toxicity or discomfort to healthcare workers and patients (see, e.g., [ 49 , 134 , 135 , 137 , 145 , 164 , 165 , 182 , 196 , 213 , 219 , 220 , 222 ]) as well as the compatibility of the disinfectant on surfaces and clothing (see, e.g., [ 61 , 69 , 83 , 85 , 139 , 145 , 172 , 189 , 220 ]).…”

Section: Resultsmentioning

confidence: 99%

Evidence Map and Systematic Review of Disinfection Efficacy on Environmental Surfaces in Healthcare Facilities

Christenson¹,

Cronk

Atkinson³

et al. 2021

IJERPH

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Healthcare-associated infections (HAIs) contribute to patient morbidity and mortality with an estimated 1.7 million infections and 99,000 deaths costing USD $28–34 billion annually in the United States alone. There is little understanding as to if current environmental surface disinfection practices reduce pathogen load, and subsequently HAIs, in critical care settings. This evidence map includes a systematic review on the efficacy of disinfecting environmental surfaces in healthcare facilities. We screened 17,064 abstracts, 635 full texts, and included 181 articles for data extraction and study quality assessment. We reviewed ten disinfectant types and compared disinfectants with respect to study design, outcome organism, and fourteen indictors of study quality. We found important areas for improvement and gaps in the research related to study design, implementation, and analysis. Implementation of disinfection, a determinant of disinfection outcomes, was not measured in most studies and few studies assessed fungi or viruses. Assessing and comparing disinfection efficacy was impeded by study heterogeneity; however, we catalogued the outcomes and results for each disinfection type. We concluded that guidelines for disinfectant use are primarily based on laboratory data rather than a systematic review of in situ disinfection efficacy. It is critically important for practitioners and researchers to consider system-level efficacy and not just the efficacy of the disinfectant.

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“…Reductions in both bacterial and fungal contamination were observed between rooms cleaned using standard sanitisation alone or in combination with a mixture of essential oils containing Lavender, Cajeput, Siberian Fir, Myrtle and Geranium bourbon EOs dispersed using commercially available ultrasound vaporisers in a residential health care house [26]. The potential reduction of bacterial and fungal contamination in unventilated lab spaces and unventilated real cultural heritage assets when tea tree and thyme EOs are cold diffused over 24 h has recently been evaluated.…”

Section: Introductionmentioning

confidence: 99%

Control of Airborne Microorganisms by Essential Oils Released by VaxiPod

Mirskaya

Agranovski

2021

Atmosphere

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Currently, due to the global pandemic caused by severe acute respiratory syndrome coronavirus SARS-CoV-2, new procedures and devices for effective disinfection of indoor air are of obvious interest. Various studies demonstrated quite broad ranges of the efficiency of essential oils in the control of biological aerosols. This project reports the results of investigation of the antimicrobial activity of essential oils natural for Australia (tea tree oil, eucalyptus oil and lemon myrtle) distributed by newly developed VaxiPod device for various scenarios, including bacterial, viral and fungal inactivation on various surfaces and in aerosol form. It was found that the device was capable of operating continuously over 24-h periods, providing sufficient aerosol concentration to efficiently inactivate microorganisms both on the surface and in airborne form. Twenty-four to forty-eight hours were required to achieve inactivation above 90% of most of the tested microbes on solid surfaces (stainless steel discs and agar plates), whilst similar efficiency of inactivation on fibrous filter surface as well as in aerosol form was achieved over 30–60 min of the process run. The results look very promising for further development of bioaerosol inactivating procedures and technologies for air quality control applications.

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Air dispersed essential oils combined with standard sanitization procedures for environmental microbiota control in nosocomial hospitalization rooms

Cited by 14 publications

References 14 publications

Eucalyptus globulus Essential Oil as a Natural Food Preservative: Antioxidant, Antibacterial and Antifungal Properties In Vitro and in a Real Food Matrix (Orangina Fruit Juice)

Eucalyptus globulus Essential Oil as a Natural Food Preservative: Antioxidant, Antibacterial and Antifungal Properties In Vitro and in a Real Food Matrix (Orangina Fruit Juice)

Evidence Map and Systematic Review of Disinfection Efficacy on Environmental Surfaces in Healthcare Facilities

Control of Airborne Microorganisms by Essential Oils Released by VaxiPod

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