Phytochemistry, Bioactivity, and Ethnopharmacology of the Genus Lepechinia Willd. (Lamiaceae): A Review

Ramírez, Jorge; Gilardoni, Gianluca; Radice, Matteo; Morocho, Vladimir

doi:10.3390/plants13040481

Cited by 3 publications

References 68 publications

(239 reference statements)

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Comparative volatiles profiling of two marjoram products via GC-MS analysis in relation to the antioxidant and antibacterial effects

Abouelela,

Shawky,

Elgendy

et al. 2024

Sci Rep

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Marjoram (Origanum majorana L.), also known as “sweet marjoram” or “sweet oregano” is a Mediterranean herbaceous perennial herb cultivated in Egypt and widely consumed as an herbal supplement for treatment of several ailments. The main goal of this study was to assess volatiles’ variation in marjoram samples collected from two different widely consumed commercial products using two different extraction techniques viz. head space solid phase microextraction (HS-SPME) and petroleum ether using gas chromatography mass spectrometry (GC-MS) analysis and multivariate data analysis. A total of 20 major aroma compounds were identified in samples extracted with HS-SPME found enriched in monoterpene hydrocarbons and oxygenated compounds. The major volatiles included β-phellandrene (20.1 and 14.2%), γ-terpinene (13.4 and 11.7%), 2-bornene (12.3 and 11.5%), p-cymene (9.8 and 4.6%) terpenen-4-ol (16.4 and 7.5%), sabinene hydrate (16.02 and 8.8%) and terpineol (4.2 and 3.2%) in MR and MI, respectively. Compared with HS-SPME, 51 aroma compounds were identified in marjoram samples extracted with petroleum ether, found more enriched in aliphatic hydrocarbons (42.8 and 73.8%) in MR and MI, respectively. While a higher identification score was observed in the case of solvent extraction, SPME appeared to be more selective in the recovery of oxygenated terpenes to account more for marjoram aroma. Multivariate data analysis using principal component analysis (PCA) revealed distinct discrimination between volatile composition of both marjoram samples. The total phenolic and flavonoid contents in marjoram samples were at (111.9, 109.1 µg GA/mg) and (18.3, 19.5 µg rutin eq/mg) in MR and MI, respectively. Stronger antioxidant effects were observed in MR and MI samples with IC50 at 45.5 and 56.8 µg/mL respectively compared to IC50 6.57 µg/mL for Trolox as assayed using DPPH assay. Moderate anti-bacterial effect was observed in MR and MI samples and expressed as a zone of inhibition mostly against Bacillus subtilis (16.03 and 15.9 mm), B. cereus (12.9 and 13.7 mm), Enterococcus faecalis (14.03 and 13.97 mm), and Enterobacter cloacae (11.6 and 11.6 mm) respectively.

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Comparative volatiles profiling of two marjoram products via GC-MS analysis in relation to the antioxidant and antibacterial effects

Abouelela,

Shawky,

Elgendy

et al. 2024

Sci Rep

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Comparative volatiles profiling in Marjoram products essential oil as extracted using classical and headspace techniques and in relation to antioxidant and antibacterial effects

Baky,

Abouelela,

Shawky

et al. 2024

Preprint

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Recently, the growth of consumer demand for natural herbal products with both safety and efficacy has led to great advances in analytical tools to assess and assure their quality. Marjoram (Origanum majorana L.), also known as "sweet marjoram" or “sweet oregano” is a Mediterranean herbaceous perennial herb cultivated in Egypt. The main goal of this study was to assess volatiles’ variation in marjoram samples collected from two different commercial products using two different extraction techniques viz. HS-SPME and petroleum ether coupled with GC-MS analysis. A total of 20 major aroma compounds were identified in samples extracted with HS-SPME with abundance of monoterpene hydrocarbons and oxygenated compounds. The major volatiles included β-phellandrene (20.1 and 14.2%), γ-terpinene (13.4 and 11.7%), 2-bornene (12.3 and 11.5%), p-cymene (9.8% and 4.6%) terpenen-4-ol (16.4% and 7.5%), sabinene hydrate (16.02% and 8.8%) and terpineol (4.2 and 3.2%) in MR and MI, respectively. Compared with HS-SPME, 51 aroma compounds were identified in marjoram samples extracted with pet. ether, more enriched in aliphatic hydrocarbons (42.8 and 73.8%) in MR and MI, respectively. While higher identification score was observed in case of solvent extraction, SPME appeared to be more selective in recovery of oxygenated terpenes to more account for marjoram aroma. The total phenolic and flavonoid contents in marjoram samples were at (111.9, 109.1 µg GA/mg) and (18.3, 19.5 µg rutin eq/mg) in MR and MI, respectively. Stronger antioxidant effects were observed in MR and MI samples with IC50 at 45.5 and 56.8 µg/mL respectively compared to IC50 6.57 µg/mL for trolox as assayed using DPPH assay. Moderate anti-bacterial effect was observed in MR and MI samples and expressed as zone of inhibition mostly against Bacillus subtilis (16.03 & 15.9 mm), B. cereus (12.9 & 13.7mm), Enterococcus faecalis (14.03 & 13.97 mm), and Enterobacter cloacae (11.60 & 11.56 mm) respectively.

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Antioxidant Activity, Antiproliferative Activity, Antiviral Activity, NO Production Inhibition, and Chemical Composition of Essential Oils and Crude Extracts of Leaves, Flower Buds, and Stems of Tetradenia riparia

Sena,

Rodrigues,

Sakumoto

et al. 2024

Pharmaceuticals

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The chemical composition of extracts (CEs) and essential oils (EOs) from Tetradenia riparia leaves, flower buds, and stems was analyzed. Antiproliferative activity against tumor cell lines, NO production inhibition, and antioxidant and antiviral activities were assessed. The CEs contained flavonoids, phenolic acids, coumarins, and saturated fatty acids. The EOs included monoterpenes, oxygenated sesquiterpenes, and diterpenes. NO production inhibition ranged from 76 to 247 µg mL−1, and antiproliferative activity exhibited GI50 between 20 and >204 µg mL−1, with low cytotoxicity (SI: 1.08 to 4.75). Reactive oxygen species inhibition ranged from 45 to 82%. Antioxidant activity varied when determined by the 2,2-diphenyl-1-picrylhydrazyl radical scavenging assay (IC50: 0.51 to 8.47 mg mL−1) and ferric reducing antioxidant power (0.35 to 0.81 µM ferrous sulfate per mg). The reduction in β-carotene–linoleic acid co-oxidation varied between 76.13 and 102.25%. The total phenolic content of CEs and EOs was 10.70 to 111.68 µg gallic acid mg−1. Antiviral activity against herpes simplex virus type 1 (HSV-1) showed an EC50 between 9.64 and 24.55 µg mL−1 and an SI between 8.67 and 15.04. Leaf EOs exhibited an EC50 of 9.64 µg mL−1 and an SI of 15.04. Our study unveils the diverse chemical composition and multifaceted pharmacological properties of T. riparia, demonstrating its potential as a valuable source of bioactive compounds for therapeutic applications.

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Phytochemistry, Bioactivity, and Ethnopharmacology of the Genus Lepechinia Willd. (Lamiaceae): A Review

Cited by 3 publications

References 68 publications

Comparative volatiles profiling of two marjoram products via GC-MS analysis in relation to the antioxidant and antibacterial effects

Comparative volatiles profiling of two marjoram products via GC-MS analysis in relation to the antioxidant and antibacterial effects

Comparative volatiles profiling in Marjoram products essential oil as extracted using classical and headspace techniques and in relation to antioxidant and antibacterial effects

Antioxidant Activity, Antiproliferative Activity, Antiviral Activity, NO Production Inhibition, and Chemical Composition of Essential Oils and Crude Extracts of Leaves, Flower Buds, and Stems of Tetradenia riparia

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