Comparative analytical and antioxidant activity studies on a series of<i>Fagus sylvatica</i>L. leaves extracts

Pîrvu, Lucia; Grigore, Ana-Maria; Bubueanu, Corina; Drăghici, Elena

doi:10.1556/jpc.26.2013.3.6

Cited by 18 publications

(11 citation statements)

References 9 publications

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“…Previous studies reported increased flavonol contents in response to increased irradiance levels [49][50][51]. Similar results were obtained in Aloysia gratissima [52], Moringa oleifera [53], Fagus sylvatica [54], and Ginkgo biloba [55]. Moreover, a positive correlation between phenolic compound content and light availability has also been previously reported [51].…”

Section: Discussionsupporting

confidence: 83%

Influence of Harvesting Time on Phenolic and Mineral Profiles and Their Association with the Antioxidant and Cytotoxic Effects of Atractylodes japonica Koidz

et al. 2021

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Plant phytochemical accumulation is influenced by various external factors that change with the seasons (e.g., harvesting time). Atractylodes japonica, an important medicinal plant rich in bioactive compounds, is used to treat several human diseases. We analyzed the influence of harvesting time on phenolic compound concentration and antioxidant activity of A. japonica roots. We investigated the correlation between phenolic compound and minerals contents and antioxidant activity in different harvests. Total phenolic and flavonoid contents varied significantly with the harvesting time. Liquid chromatography–mass spectrometry/mass spectrometry (LC–MS/MS) analysis revealed significant changes in the concentration of various phenolics between harvests. The content of different types of phenolics were significantly higher in the samples collected in October. Among them, chlorogenic acids (133,833.30 µg/g dry weight of root extract) were the most dominant phytochemical compounds detected. Samples harvested in October had higher concentrations of flavonoids, including rutin, orientin, vitexin, and apigenin. Roots harvested in October had a significantly higher (p < 0.05) antioxidant activity than that of those harvested later. Root mineral concentrations also varied with the harvest time. The analysis revealed that macro elements such as Ca ad Mg contents were significantly increased with delaying harvesting time, whereas a different trend was observed for the microelements including Fe, Cu, Al, and As contents in the October harvest. We also found a significant relationship between antioxidant activity and phenolic compound content. The most abundant minerals (Ca, Mg, Mn, Fe, and Al) correlated positively with the antioxidant activity indicating that these elements and compounds may be associated with the A. japonica antioxidant potential. Furthermore, A. japonica root extracts inhibited NIH/3T3 cellular proliferation in a season- and dose-dependent manner. Hence, harvesting time influenced the antioxidant properties and phenolic compound accumulation of A. japonica roots. These results indicate that the harvesting time is essential for obtaining the specific phytochemicals.

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Section: Discussionsupporting

confidence: 83%

Influence of Harvesting Time on Phenolic and Mineral Profiles and Their Association with the Antioxidant and Cytotoxic Effects of Atractylodes japonica Koidz

et al. 2021

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“…The total amounts of flavan-3-ols and flavonoids reached maximum values in July and August respectively. With temperate-zone tree species, similiar seasonal tendecies were found for the leaves of European beech (Fagus sylvatica L.) showing increasing total phenol levels from early spring to late summer with maximum values in September (Pirvu et al, 2013). According to the literature, the tendecy of the seasonal changes in the total phenol content of plant leaves can also depend on species, site conditions (altitude, solar irradiation), the position of the leaves and variety (Zhang et al, 2010;Vagiri et al, 2015).…”

Section: Resultsmentioning

confidence: 98%

Antioxidant properties and detailed polyphenol profiling of European hornbeam (Carpinus betulus L.) leaves by multiple antioxidant capacity assays and high-performance liquid chromatography/multistage electrospray mass spectrometry

Hofmann

Nebehaj

Albert

2016

Industrial Crops and Products

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a b s t r a c tAccording to recent studies, the antioxidant and anticancer related properties of European hornbeam (Carpinus betulus L.) leaf extracts are remarkable, making it a possible raw material for medicine, requiring the identification of major active compounds and the assessment of the antioxidant properties of the extracts. In the present work the high-performance liquid chromatographic/multistage mass spectrometric characterization of the antioxidant polyphenolic compounds as well as the evaluation of the seasonal changes in the major antioxidant capacity and related parameters (DPPH, ABTS, FRAP, total phenol content, total flavonoid content and total flavan-3-ol content) have been carried out for the leaves of European hornbeam for the first time. The extracts exhibited the highest antioxidant capacity in August, basing on the FRAP (106.24 ± 3.10 mg AAE/g dw.) and DPPH (IC 50 : 4.63 ± 0.88 g/ml) assays and in May, based on the ABTS (329.78 ± 23.89 mg TE/g dw.) method. From the August extract a total of 171 compounds, including phenolic acids, flavonoid glycosides, tannins, catechins and procyanidins have been characterized and identified. According to the HPLC-PDA peak areas, the most abundant polyphenolic compounds in the August extracts were chlorogenic acid, ellagic acid, ellagitannins, myricetin-, luteolin-, quercetin-and apigenin glycosides. Further research is needed for the elucidation of the compounds which are primarily responsible for the antioxidant properties.

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“…Of polyphenols, phenolic acids such as p-hydroxibenzoic, syringic, gallic, abscisic, and cinnamic acid and flavonoids such as quercetin, kaempferol, chrysin, taxifolin, and (epi)catechin derivates were previously revealed [22,23]. More recent (HP)TLC studies on a series of ethanol extracts have revealed a dynamic of the beech leaves polyphenols content along the vegetation time; it was revealed that if spring leaves are dominated of one major kaempferol diglycoside aside only traces of chlorogenic acid and apigenin derivates, summer leaves abound in chlorogenic acid and apigenin derivates next to small quantities of quercetin and catechin derivates; in contrast, autumn leaves indicated that chlorogenic acid isomers decline versus apigenin, quercetin, and catechin derivates augmentation [24]. In the present work, System A setting study ( Figure 6A1, T2 tracks) on (70%) ethanol extract of beech leaves harvested in September time indicated the following polyphenols profile: at least eight blue fl.…”

Section: Journal Of Planar Chromatography 27 (2014)mentioning

confidence: 99%

Comparative studies on analytical, antioxidant, and antimicrobial activities of a series of vegetal extracts prepared from eight plant species growing in Romania

Pîrvu¹,

Hlevca²,

Nicu³

et al. 2014

Journal of Planar Chromatography – Modern TLC

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SummaryGiven the large applicability in both pharmaceutical and cosmetic field, this work was aimed at analytical (high-performance thin-layer chromatography [HPTLC] method), antioxidant (2,2-diphenyl-1-picrylhydrazyl [DPPH] method), and antimicrobial (diffusion method on Staphylococcus aureus ATCC 6538, Escherichia coli ATCC 8739, and Candida albicans ATCC 10231) studies on a series of whole vegetal extracts and corresponding aqueous, ethyl acetate and chloroform fractions (selective extracts) prepared from eight plant species growing in Romania. Briefly, it was revealed moderate to certain activity against S. aureus ATCC 6538 and E. coli ATCC 8739 in the case of greater burdock leaves (Arctium lappa), beech leaves (Fagus sylvatica) and great willowherb aerial part (Epilobium hirsutum) whole extracts. Purple loosestrife aerial part (Lythrum salicaria) and sea-buckthorn leaves (Hippophae rhamnoides) whole extracts showed only weak activity against these bacteria, while tarragon aerial part (Artemisia dracunculoides), chokeberries leaves

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Comparative analytical and antioxidant activity studies on a series ofFagus sylvaticaL. leaves extracts

Cited by 18 publications

References 9 publications

Influence of Harvesting Time on Phenolic and Mineral Profiles and Their Association with the Antioxidant and Cytotoxic Effects of Atractylodes japonica Koidz

Influence of Harvesting Time on Phenolic and Mineral Profiles and Their Association with the Antioxidant and Cytotoxic Effects of Atractylodes japonica Koidz

Antioxidant properties and detailed polyphenol profiling of European hornbeam (Carpinus betulus L.) leaves by multiple antioxidant capacity assays and high-performance liquid chromatography/multistage electrospray mass spectrometry

Comparative studies on analytical, antioxidant, and antimicrobial activities of a series of vegetal extracts prepared from eight plant species growing in Romania

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