Essential oils of Portuguese flavouring plants: potential as green biocides in cultural heritage

Arantes, Sílvia; Piçarra, Andreia; Caldeira, Ana Teresa; Candeias, António; Martins, M. Rosário

doi:10.1140/epjp/s13360-021-02018-2

Cited by 14 publications

(13 citation statements)

References 88 publications

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“…and Leptolyngbya cebennensis. C. nepeta indeed also demonstrated very effective results in other works [35], conversely to this case, especially against the microorganisms from Surface a, where it did not show the same efficacy.…”

Section: Discussionsupporting

confidence: 52%

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Evaluation of the Cleaning Effect of Natural-Based Biocides: Application on Different Phototropic Biofilms Colonizing the Same Granite Wall

et al. 2023

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Natural derivatives, such as essential oils, are presented as an alternative to classical biocides to the treatment of biocolonization. Thus, in this work, the cleaning and biocidal potential of some natural derivatives towards two natural biofilms’ growth on the same granite wall, with different microbial composition, was evaluated. For this purpose, three essential oils (EOs) (from Origanum vulgare, Thymus vulgaris and Calamintha nepeta) and their main active principles (APs) (carvacrol, thymol and R-(+)-pulegone, respectively) were embedded in a hydrogel matrix, with different combinations of EOs and APs, in order to evaluate the synergistic action of different actives. For comparative purposes, pure hydrogel and a mechanical method (brushing) were also used. Colorimetric measurements and chlorophyll a fluorescence analyses were performed to evaluate the cleaning action of the treatments on the biofilms. Overall, the EOs and APs present in the hydrogel proved to be reliable treatments to limit natural biocolonization, with O. vulgare being one of the most effective treatments in combination with other compounds, due to the majority presence of carvacrol. Moreover, the effect of the different treatments strictly depended on the biofilm in question, as well as its ability to adhere to the substrate.

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Section: Discussionsupporting

confidence: 52%

“…oregano, thyme and pennyroyal) from the Lamiaceae family. In particular, O. vulgare and T. vulgaris resulted to be the most studied and effective EOs towards several biodeteriogens of cultural heritage [13], and similar results were yielded for C. nepeta [34,35].…”

Section: Introductionsupporting

confidence: 52%

Evaluation of the Cleaning Effect of Natural-Based Biocides: Application on Different Phototropic Biofilms Colonizing the Same Granite Wall

et al. 2023

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“…There are few studies on the role of nanoencapsulated EOs for preventing the biodegradation of wood [ 33 , 34 ] and stone [ 2 , 35 ]. The effect of reducing bacterial or fungal biofilms on the surface of different materials by EOs has been successfully demonstrated in several studies [ 36 , 37 , 38 , 39 , 40 , 41 , 42 ].…”

Section: Resultsmentioning

confidence: 99%

Protection and Disinfection Activities of Oregano and Thyme Essential Oils Encapsulated in Poly(ε-caprolactone) Nanocapsules

et al. 2023

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The biocolonization of building materials by microorganisms is one of the main causes of their degradation. Fungi and bacteria products can have an undesirable impact on human health. The protection and disinfection of sandstone and wood materials are of great interest. In this study, we evaluated the protection and disinfection activity of oregano and thyme essential oils encapsulated in poly(ε-caprolactone) nanocapsules (Or-NCs, Th-NCs) against four types of environmental microorganisms: Pleurotus eryngii, Purpureocillium lilacinum (fungal strains), Pseudomonas vancouverensis, and Flavobacterium sp. (bacterial strains). The surfaces of sandstone and whitewood samples were inoculated with these microorganisms before or after applying Or-NCs and Th-NCs. The concentration-dependent effect of Or-NCs and Th-NCs on biofilm viability was determined by the MTT reduction assay. The results showed that Or-NCs and Th-NCs possess effective disinfection and anti-biofilm activity. Diffuse reflectivity measurements revealed no visible color changes of the materials after the application of the nanoencapsulated essential oils.

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“…Studies carried out with C. nepeta from southern Portugal reported that this EO had 1,8-cineole, isopulegol and isopulegone as major components[26]. Studies carried out with C. nepeta EOs from Alentejo (Portugal) have shown a peculiar chemical profile predominantly composed of isomenthone (35.8-51.3%), 1,8-cineole (21.1-21.4%) and trans-isopulegone (7.8-6.0%)[27,28,[107][108][109].…”

mentioning

confidence: 98%

Essential Oils High in 1,8-Cineole of Mediterranean Flavoring Plants: Health Benefits

Arantes¹,

Caldeira²,

Martins³

2022

Essential Oils - Advances in Extractions and Biological Applications

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Aromatic flavoring plants are important ingredients of the Mediterranean diet, one of the healthiest and most sustainable dietary forms, often associated with greater longevity as well as contributing to the reduction of some chronic pathologies with high mortality and morbidity. Their essential oils (EOs) are increasingly used as therapeutic agents and food supplements, due to their antioxidants, anti-inflammatory or anti-tumoral properties. The Health benefits of essential oils are closely related with their chemical constituents. The 1,8-cineole, a naturally cyclic oxygenated monoterpene, has been attributed several biological properties such as antioxidants, anti-inflammatory or antitumoral. Nevertheless, the EO properties are attributed not only to their main components but also to the synergistic effect of minor components. This review chapter focused on the chemical composition and antioxidant and anti-inflammatory potential of EOs of flavoring Lamiaceae plants, with high content in 1,8-cineole, including chemotypes of genera Lavandula, Calamintha, Rosmarinus, and Thymus, often used in the Mediterranean diet.

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Essential oils of Portuguese flavouring plants: potential as green biocides in cultural heritage

Cited by 14 publications

References 88 publications

Evaluation of the Cleaning Effect of Natural-Based Biocides: Application on Different Phototropic Biofilms Colonizing the Same Granite Wall

Evaluation of the Cleaning Effect of Natural-Based Biocides: Application on Different Phototropic Biofilms Colonizing the Same Granite Wall

Protection and Disinfection Activities of Oregano and Thyme Essential Oils Encapsulated in Poly(ε-caprolactone) Nanocapsules

Essential Oils High in 1,8-Cineole of Mediterranean Flavoring Plants: Health Benefits

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