Antimicrobial activity of Elytropappus rhinocerotis (Asteraceae) against micro-organisms associated with foot odour and skin ailments

Hulley, I.M.; Vuuren, Sandy van; Sadgrove, Nicholas J.; Wyk, B.‐E. Van

doi:10.1016/j.jep.2018.09.014

Cited by 17 publications

(6 citation statements)

References 18 publications

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“…Alternatively, aromatic extracts that include fixed components, such as flavonoids or alkaloids, generally produce synergistic antimicrobial effects [ 11 , 12 , 13 ]. In cases of antimicrobial synergy between fixed and essential oil components, the same antimicrobial potency cannot be produced using only the hydrodistilled oils.…”

Section: Introductionmentioning

confidence: 99%

Fundamental Chemistry of Essential Oils and Volatile Organic Compounds, Methods of Analysis and Authentication

Sadgrove

Padilla-González

Phumthum

2022

Plants

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The current text provides a comprehensive introduction to essential oils, their biosynthesis, naming, analysis, and chemistry. Importantly, this text quickly brings the reader up to a level of competence in the authentication of essential oils and their components. It gives detailed descriptions of enantiomers and other forms of stereoisomers relevant to the study of natural volatiles and essential oils. The text also describes GC-MS work and provides tips on rapid calculation of arithmetic indices, how to interpret suggested names from the NIST mass spectral library, and what additional efforts are required to validate essential oils and defeat sophisticated adulteration tactics. In brief, essential oils are mixtures of volatile organic compounds that were driven out of the raw plant material in distillation, condensed into an oil that is strongly aroma emitting, and collected in a vessel as the top layer (uncommonly bottom layer) of two phase separated liquids: oil and water. Essential oils commonly include components derived from two biosynthetic groups, being terpenes (monoterpenes, sesquiterpenes and their derivatives) and phenylpropanoids (aromatic ring with a propene tail). The current text provides details of how terpenes and phenylpropanoids are further categorised according to their parent skeleton, then recognised by the character of oxidation, which may be from oxygen, nitrogen, or sulphur, or the presence/absence of a double bond. The essential oil’s science niche is an epicentre of individuals from diverse backgrounds, such as aromatherapy, pharmacy, synthetic and analytical chemistry, or the hobbyist. To make the science more accessible to the curious student or researcher, it was necessary to write this fundamentals-level introduction to the chemistry of essential oils (i.e., organic chemistry in the context of essential oils), which is herein presented as a comprehensive and accessible overview. Lastly, the current review constitutes the only resource that highlights common errors and explains in simplistic detail how to correctly interpret GC-MS data then accurately present the respective chemical information to the wider scientific audience. Therefore, detailed study of the contents herein will equip the individual with prerequisite knowledge necessary to effectively analyse an essential oil and make qualified judgement on its authenticity.

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Section: Introductionmentioning

confidence: 99%

Fundamental Chemistry of Essential Oils and Volatile Organic Compounds, Methods of Analysis and Authentication

Sadgrove

Padilla-González

Phumthum

2022

Plants

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“…C.A.Sm. Antimicrobial and antioxidant [ 125 ] 10 Elytropappus rhinecerotis Antimicrobial [ 126 ] 11 Eucomis autumnalis (Mill.) Chitt Antibacterial and antioxidant [ 73 ] 12 Euphorbia ingens E.Mey.…”

Section: Resultsmentioning

confidence: 99%

Plants Used for the Traditional Management of Cancer in the Eastern Cape Province of South Africa: A Review of Ethnobotanical Surveys, Ethnopharmacological Studies and Active Phytochemicals

Sagbo

Otang-Mbeng

2021

Molecules

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Cancer occurrence is rapidly increasing all over the world, including in developing countries. The current trend in cancer management requires the use of herbal remedies since the majority of anticancer drugs are known to be costly, with unwanted side effects. In the Eastern Cape province, the use of medicinal plants for cancer management has been climbing steadily over the past two decades due to their cultural belief, low cost, efficacy, and safety claims. With the aim of identifying some potential anticancer plants for probable drug development, this study was undertaken to review plants reported by ethnobotanical surveys in the Eastern Cape province of South Africa for the traditional management of cancer. Information regarding plants used for cancer management in the Eastern Cape province was obtained from multidisciplinary databases and ethnobotanical books. About 24 plant species belonging to twenty families have been reported to be used for the traditional management of cancer in the Eastern Cape province. Among the anticancer plant species, only 16 species have been explored scientifically for their anticancer activities. This review authenticated the use of anticancer plant species in the Eastern Cape province and, therefore, identified several promising unexplored species for further scientific evaluation.

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“…For example, medical practitioners will discourage self-treatment for potentially dangerous infections, such as staph or septic wounds, but they will accept use of essential oils to prevent spreading the infection, or to support antibiotic treatment. Some dermatological problems that will benefit from the antimicrobial effects of essential oils include acne [36], hair loss pathologies where overgrowth of Propionibacterium and Malassezia promote microinflammation [37,38], foot odours [39], athletes foot [40], and protection of skin grazes, cuts, or non-infected wounds.…”

Section: Antimicrobial Effects Of Essential Oilsmentioning

confidence: 99%

Purely Australian Essential Oils Past and Present: Chemical Diversity, Authenticity, Bioactivity, and Commercial Value

Sadgrove

2022

Diversity

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In this comprehensive commentary, Australian essential oils and their components are listed and discussed in the context of their value to industry and aesthetics. The historic and cultural significance of endemic essential oils is explained. Several promising candidates are identified that have commercial potential and will enter the marketplace in the not-too-distant future. This text elaborates on the current progress in research, and explains the up-to-date view of ‘bioactive,’ with reference to insect repellence, antimicrobial activity, anti-inflammatory activity, and potential toxicity. The concept of chemotypes and chemophenetics is explained in detail to justify why chemically variable species in Australia require standardisation practices to ensure reproducibility of their derived natural products: standardisation practice includes cultivar development and authentication protocols. Thereafter, some of the more significant essential oils are defined and some background information provided. This review concludes with a comprehensive table of aromatic species that were studied by Joseph Brophy over the last 30 years, thereby providing the most comprehensive overview available, on the chemistry of Australian essential oil yielding species.

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Antimicrobial activity of Elytropappus rhinocerotis (Asteraceae) against micro-organisms associated with foot odour and skin ailments

Cited by 17 publications

References 18 publications

Fundamental Chemistry of Essential Oils and Volatile Organic Compounds, Methods of Analysis and Authentication

Fundamental Chemistry of Essential Oils and Volatile Organic Compounds, Methods of Analysis and Authentication

Plants Used for the Traditional Management of Cancer in the Eastern Cape Province of South Africa: A Review of Ethnobotanical Surveys, Ethnopharmacological Studies and Active Phytochemicals

Purely Australian Essential Oils Past and Present: Chemical Diversity, Authenticity, Bioactivity, and Commercial Value

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