Variation in essential oil composition of Leonotis leonurus, an important medicinal plant in South Africa

Nsuala, Baudry; Kamatou, Guy; Sandasi, Maxleene; Enslin, Gill; Viljoen, Alvaro

doi:10.1016/j.bse.2016.11.009

Cited by 24 publications

(11 citation statements)

References 15 publications

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“…It is used to find groupings and clusters of interrelated samples to establish a relationship between samples and variables. OPLS-DA is a supervised algorithm and is commonly used to analyze chemical variations between inner and outer groups and identify potential markers [ 13 ].…”

Section: Methodsmentioning

confidence: 99%

“…There are no reports of their qualifications. A chemometric method with principal component analysis (PCA) and orthogonal projections to latent structures discriminant analysis (OPLS-DA) was used to find out the chemical markers [ 13 ]. The results can provide valuable information for the LP resource explorations as high-quality resources.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Two Parts of Lithocarpus polystachyus Rehd. from Different Chinese Areas by Multicomponent Content Determination and Pattern Recognition

Wei

Tuo²,

Zhang

et al. 2020

Journal of Analytical Methods in Chemistry

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The purpose of this work is to establish a new method using high-performance liquid chromatography-diode array detection (HPLC-DAD) with chemometrics analysis to determine the content of catechin, isoquercetin, astragalin, phloridzin, trilobatin, and phloretin for one flavanol and five flavonoids, filter out the key compounds, and evaluate the quality of 26 batches of tender leaves and flower spikes of Lithocarpus polystachyus Rehd. (LP) from ten areas in China. The result showed that the HPLC-DAD method had excellent performance for accurate quantification analysis. S3 (tender leaf from Lushan, Sichuan) had the highest contents for six measured chemicals with trilobatin content of up to 27.82% in dry weight. S22 (flower spike from Liangping, Chongqing) had the highest content of phloridzin (up to 7.28%). All samples were divided into three types based on spatial distribution using principal component analysis. The result showed that the tender leaves and flower spikes from the same areas had many similar properties, and there were significant differences between the samples from different regions. Furthermore, phloridzin and trilobatin were identified as chemical markers for quality evaluation of two parts with different tender leaves and flower spikes of LP from geographical areas by orthogonal partial least squares discrimination analysis. These results will be helpful to establish an effective and comprehensive evaluation system of the development and utilization of LP resources.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Two Parts of Lithocarpus polystachyus Rehd. from Different Chinese Areas by Multicomponent Content Determination and Pattern Recognition

Wei

Tuo²,

Zhang

et al. 2020

Journal of Analytical Methods in Chemistry

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“…However, there is no published report on the evaluation of either the morphological characteristics or yield among landraces or cultivated populations of M. chinensis. Phytochemical characterization is also regarded as an effective method for evaluating germplasm material of medicinal plants (Nsuala et al, 2017). The herbage of M. chinensis contains polysaccharides, polyphenols, and flavonoids (Lin et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of morphological and phytochemical characteristics of Mesona chinensis populations in southern China

et al. 2020

Plant Production Science

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Mesona chinensis Benth. is a herbal plant with both edible and medicinal values. Thirty-four populations of M. chinensis in southern China were examined to quantify their morphological and phytochemical characteristics. The results showed that the populations differed significantly (p < 0.01) in each of the morphological and phytochemical characteristics. The morphological characteristics showed wide variation among populations, with CV values ranging from 15.76% to 54.18%. The herbage yield was mainly positively correlated with a number of stem traits. The cluster analysis showed that the populations belong to two major groups. Both total phenolic (TPh) contents and total flavonoid (TF) contents respectively ranged from 5.49 to 18.44 and 5.06 to 11.47 mg.g −1 among populations. Antioxidant activity, evaluated by means of ABTS (2, 2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid) and DPPH (1,1-diphenyl-2-picrylhydrazyl) assays, ranged from 63.91 to 223.41 and 30.35 to 137.84 mmol Trolox equivalents.g −1 , respectively, among populations. Significant positive correlations were found between antioxidant activity and TF contents, TPh contents, and total polysaccharide (TP) contents. Most of the 34 populations were rich in polysaccharides, while GD-6, GD-12, GD-3, GD-8, JX-6, and FJ-1 had the highest TP content in turn. Based on comprehensive grey correlation analysis, GD-1, GD-2, GD-8, FJ-6, FJ-3, FJ-2, JX-6, GD-7, JX-3, and JX-2 were the best performers for production and quality of M. chinensis in southern China.

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“…Br., endemic to South Africa, is commonly reported in TM to treat numerous ailments including eczema, headaches, hypertension, and chest infections [10,11]. The leaves (when smoked) have been described to elicit similar effects to Cannabis, including mild psychoactive symptoms, as well as the capacity to alleviate anxiety and induce calming effects [10,12].…”

Section: Introductionmentioning

confidence: 99%

The identification of a cannabinoid-like compound (adrenoyl-EA), in the flowers of a South African medicinal plant (Leonotis leonurus)

Hunter

Stander

Koßmann

et al. 2020

Preprint

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Objective Current global trends on natural therapeutics suggest an increasing market interest toward the use and discovery of new plant-derived therapeutic compounds, often referred to as traditional medicine (TM). The Cannabis industry is currently one such focal area receiving attention, owing to the occurrence of phytocannabinoids (pCBs) which have shown promise in health-promotion and disease prevention. However, the occurrence of pCBs in other plant species are often overlooked and rarely studied. Leonotis leonurus (L.) R. Br. is endemic to South Africa with a rich history of use in TM practices amongst indigenous people and, has been recorded to induce mild psychoactive effects akin to Cannabis. While the leaves have been well-reported to contain therapeutic phytochemicals, little information exists on the flowers. Consequently, as part of a larger research venture, we targeted the flowers of L. leonurus for the identification of potential pCB or pCB-like compounds.Results Flower extracts were separated and analyzed using high performance thin layer chromatography (HPTLC). A single pCB candidate was isolated from HPTLC plates and, using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS), identified as 7,10,13,16-Docosatetraenoylethanolamine (adrenoyl-EA). Adrenoyl-EA is a known bioactive pCB-like compound reported to occur in only one other plant species, Tropaeolum tuberosum.

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Variation in essential oil composition of Leonotis leonurus, an important medicinal plant in South Africa

Cited by 24 publications

References 15 publications

Evaluation of Two Parts of Lithocarpus polystachyus Rehd. from Different Chinese Areas by Multicomponent Content Determination and Pattern Recognition

Evaluation of Two Parts of Lithocarpus polystachyus Rehd. from Different Chinese Areas by Multicomponent Content Determination and Pattern Recognition

Evaluation of morphological and phytochemical characteristics of Mesona chinensis populations in southern China

The identification of a cannabinoid-like compound (adrenoyl-EA), in the flowers of a South African medicinal plant (Leonotis leonurus)

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