Seasonal variability of chemical composition and antioxidant activity of lipids (fatty acids and tocopherols) from the leaves of Pistacia lentiscus L.

Harrat, Mohamed; Gourine, Nadhir; Válega, Mónica; Silva, Artur M. S.; Yousfi, Mohamed

doi:10.1007/s11694-020-00441-0

Cited by 6 publications

(2 citation statements)

References 43 publications

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“…The presence of linolenic acid ( 8 ) characterized most of the bottom leaves in midsummer (February), autumn (April–June), and winter (August). This organic acid plays a vital role in various mechanisms, including plant defense in extreme conditions; subsequently, its accumulation indicates a seasonal effect or other ecological links. A more controlled behavior was observed for M. aquifolium , except for the top–bottom profiles represented by compounds 2 and 4 in winter and autumn.…”

Section: Results and Discussionmentioning

confidence: 99%

¹H HR-MAS NMR-Based Metabolomic Fingerprinting to Distinguish Morphological Similarities and Metabolic Profiles of Maytenus ilicifolia, a Brazilian Medicinal Plant

et al. 2021

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Maytenus ilicifolia or "Espinheira-Santa" is a renowned Brazilian medicinal plant usually used against intestinal and stomach ulcers. Other species with similar thorny leaves have raised great confusion in order to discern the authentic M. ilicifolia. Misidentifications can lead to product adulteration of authentic M. ilicifolia with other species, which can be found on the Brazilian market. The intake of misclassified herbal products potentially could be fatal, demanding faster reliable fingerprinting-based classification methods. In this study, the use of 1 H HR-MAS NMR metabolomics fingerprinting and principal component analysis (PCA) allowed an evaluation of the authenticity for both collected and commercial M. ilicifolia samples, from the content of the flavanol, (−)-epicatechin (2), by observing variations in metabolic patterns. Plant specimen types from cultivated and natural habitats were analyzed by considering seasonal and topological differences. The interand intraplant topological metabolic profiles were found to be affected by seasonal and/or ecological trends such as sunlight, shade, rain, and the presence of pathogens. Moreover, several commercial samples, labeled as M. ilicifolia, were evaluated, but most of these products were of an inadequate quality.T he use of medicinal plants is a foundation of folk medicine in several countries, including Brazil. Some plants offer therapeutic attributes due to the presence of various chemical compounds, and on proper use, they can treat several diseases. However, the intake of misclassified, false, or wrongly labeled unauthentic plants or their products may be fatal. Usually, false products can comprise foreign matter, toxic plant ingredients, or harmful chemical additives that can have adverse effects. 1−3 Brazil has several renowned medicinal plants from the Maytenus genus. This genus represents about 300 species, including Maytenus ilicifolia Mart. ex Reissek (Celastraceae) (synonyms: Celastrus pinifolius Larranãga; Maytenus angustior Briq.; Maytenus hassleri Briq.; Maytenus muelleri Schwacke; Maytenus off icinalis Mabb.; Maytenus pilcomayensis Briq.; and Maytenus aquifolium Mart.). This species is known popularly as "Espinheira-Santa", and it is distributed in different regions of Brazil. 4 According to the Brazilian Pharmacopeia, the leaves of this species have several marker constituents (e.g., flavonoids) and are largely consumed as an infusion (tea), as the raw material, or as extracts and capsules. 4,5 Also, M. ilicifolia and/or M. aquifolium have been cited in the "National List of Medicinal Plants of Interest to the Unified Health System (RENISUS)", and this list contains 71 medicinal plants of interest for therapeutic use by the Brazilian population. 6

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Section: Results and Discussionmentioning

confidence: 99%

¹H HR-MAS NMR-Based Metabolomic Fingerprinting to Distinguish Morphological Similarities and Metabolic Profiles of Maytenus ilicifolia, a Brazilian Medicinal Plant

et al. 2021

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“…Hexane/isopropanol was used for extraction in both procedures. However, the preparation of the lipid fraction to determine the antioxidant properties additionally included rotary evaporation to dryness and final reconstitution in 10 mL of ethanol [31]. Defatted solid residue, which remained after the lipid extraction, was used for further extraction of phenolic compounds.…”

Section: Preparation Of Pollen Extractsmentioning

confidence: 99%

Phytochemical Profile and Antioxidant Properties of Bee-Collected Artichoke (Cynara scolymus) Pollen

et al. 2021

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The current study intended to determine, for the first time, phenolic and fatty acid profile, antioxidant and certain nutritional properties of monofloral bee-collected artichoke (Cynara scolymus) pollen. Based on UHPLC-DAD MS-MS analysis the main phenolics in extractable fraction were different flavonol glycosides (in particular Isorhamnetin-3-O-glucoside, 49.2 mg/kg of dry weight) while ferulic acid was the predominant phenolic compound (39.4 mg/kg of dry weight) in the alkaline hydrolyzable fraction. Among fatty acids (FAs), results of GC-FID analysis revealed prevalence of unsaturated FAs with cis-5,8,11,14,17-eicosapentaenoic acid (EPA) and oleic acid as the main ones- 28.4% and 24.9%, respectively. Based on the FA composition, nutritional analysis proved that artichoke bee-collected pollen had balanced ω-6 and ω-3 FAs content. To determine the antioxidant properties of pollen, five different assays were applied. It was proved that bioactive compounds in artichoke pollen possessed significant ability to quench DPPH radical as well as ABTS radical cation. In addition, in vitro phosphomolybdenum assay confirmed that artichoke pollen is an excellent source of different antioxidants. Pollen extracts exhibited moderate ferric reducing power as well as low ferrous chelating ability. Some further antioxidant studies (preferably in vivo) should be performed to confirm the observed results.

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A comparative study of the total phenol and flavonoid contents and biological activities of different medicinal parts of Penthorum chinense Pursh

Liu

Zou

et al. 2021

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Seasonal variability of chemical composition and antioxidant activity of lipids (fatty acids and tocopherols) from the leaves of Pistacia lentiscus L.

Cited by 6 publications

References 43 publications

¹H HR-MAS NMR-Based Metabolomic Fingerprinting to Distinguish Morphological Similarities and Metabolic Profiles of Maytenus ilicifolia, a Brazilian Medicinal Plant

¹H HR-MAS NMR-Based Metabolomic Fingerprinting to Distinguish Morphological Similarities and Metabolic Profiles of Maytenus ilicifolia, a Brazilian Medicinal Plant

Phytochemical Profile and Antioxidant Properties of Bee-Collected Artichoke (Cynara scolymus) Pollen

A comparative study of the total phenol and flavonoid contents and biological activities of different medicinal parts of Penthorum chinense Pursh

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Seasonal variability of chemical composition and antioxidant activity of lipids (fatty acids and tocopherols) from the leaves of Pistacia lentiscus L.

Cited by 6 publications

References 43 publications

1H HR-MAS NMR-Based Metabolomic Fingerprinting to Distinguish Morphological Similarities and Metabolic Profiles of Maytenus ilicifolia, a Brazilian Medicinal Plant

1H HR-MAS NMR-Based Metabolomic Fingerprinting to Distinguish Morphological Similarities and Metabolic Profiles of Maytenus ilicifolia, a Brazilian Medicinal Plant

Phytochemical Profile and Antioxidant Properties of Bee-Collected Artichoke (Cynara scolymus) Pollen

A comparative study of the total phenol and flavonoid contents and biological activities of different medicinal parts of Penthorum chinense Pursh

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¹H HR-MAS NMR-Based Metabolomic Fingerprinting to Distinguish Morphological Similarities and Metabolic Profiles of Maytenus ilicifolia, a Brazilian Medicinal Plant

¹H HR-MAS NMR-Based Metabolomic Fingerprinting to Distinguish Morphological Similarities and Metabolic Profiles of Maytenus ilicifolia, a Brazilian Medicinal Plant