Antimicrobial and antioxidant activities of Mexican oregano essential oils (Lippia graveolens H. B. K.) with different composition when microencapsulated inβ-cyclodextrin: Lippia encapsulated essential oil
Abstract
AIMS: To study how the antimicrobial and antioxidant activities of Lippia graveolens essential oils with different composition are affected after the microencapsulation process with beta-cyclodextrin (beta CD). METHODS AND RESULTS: Three Mexican oregano essential oils (EOs) with different carvacrol/thymol/p-cymene ratios (38 : 3 : 32, 23 : 2 : 42, 7 : 19 : 35) were used in this study. Microencapsulation was carried out by spray-drying. Antimicrobial activities were measured as MBC (minimal bactericidal concentration) using 0.05%/0.10%/0.20% (w/v) dilutions of EOs against Escherichia coli ATCC 11229, Pseudomonas aeruginosa ATCC 9027 and Staphylococcus aureus ATCC 6538. Antioxidant activities were determined by the 2,2'-diphenyl-1-picrylhydrazil (DPPH) method. EOs showed antimicrobial and antioxidant activity, but microencapsulation preserved the antimicrobial activity in all cases and increased the antioxidant activity from four- to eightfold. CONCLUSIONS: Although the Lippia essential oils were from the same species, their composition affects the biological activities before and after the microencapsulation process, as well as encapsulation efficiency. Our study supports the fact that microencapsulation of EOs in beta-cyclodextrin preserves the antimicrobial activity, improves the antioxidant activity and acts as a protection for EOs main compounds. SIGNIFICANCE AND IMPACT OF THE STUDY: Microencapsulation affects positively EOs main compounds, improves antioxidant activity and retains antimicrobial activity, enhancing the quality of the oils.
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Microencapsulation increased the anti-radical activity of Lippia graveolens oils from fourfold to eightfold.
“The authors concluded that microencapsulation increased the anti-radical activity from fourfold to eightgold [69].”
From Antioxidant and Anti-Inflammatory Activities of Essential Oils: A Short Review (2010) · cites this paper as [69]
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Antioxidant and Anti-Inflammatory Activities of Essential Oils: A Short Review
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“Diverse oils obtained from Origanum vulgare L. subsp. glandulosum (Desf.) collected at different locations of Tunisia showed different but always good abilities for scavenging DPPH radicals.”
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- Authors
- Arana-Sánchez, A., Estarrón-Espinosa, M., Obledo-Vázquez, E. N., Padilla-Camberos, E., Silva-Vázquez, R., & Lugo-Cervantes, E.
- Affiliations
- Instituto Tecnológico y de Estudios Superiores de Occidente (MX)
- ORCID
- Arana-Sánchez, A.
- Venue
- Letters in Applied Microbiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2010-03-17
- Volume
- 50
- Issue
- 6
- Pages
- 585-590
- ISSN
- 0266-8254 (ISSN-L)
- 1472-765X
- OpenAlex
- W1539367483
- Cited by
- 142
- References
- 24
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 10 · 2023: 11 · 2022: 15 · 2021: 9 · 2020: 15 · 2019: 11 · 2018: 8 · 2017: 13 · 2016: 8 · 2015: 12 · 2014: 9 · 2013: 4 · 2012: 2
- FWCI
- 6.37
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Letters in Applied Microbiology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Secretaría de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentación
- Topics
- Life Sciences › Agricultural and Biological Sciences › Food Science › Essential Oils and Antimicrobial Activity
- Life Sciences › Agricultural and Biological Sciences › Food Science › Microencapsulation and Drying Processes
- Life Sciences › Agricultural and Biological Sciences › Food Science › Proteins in Food Systems
- Keywords
- Lippia graveolens, oregano essential oil, β-cyclodextrin, microencapsulation, spray drying, antimicrobial activity, antioxidant activity, carvacrol, thymol, p-cymene, essential oil composition, encapsulation efficiency, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus
- MeSH terms
- Anti-Bacterial Agents, Antioxidants, Bacteria, Drug Compounding, Oils, Volatile, Plant Oils, Lippia, beta-Cyclodextrins
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