Evaluation of seasonal antioxidant activity and total phenolic compounds in stems and leaves of some almond (Prunus amygdalus L.) varieties

Sivaci, Aysel; Duman, Sevcan

doi:10.1186/0717-6287-47-9

Cited by 25 publications

(13 citation statements)

References 21 publications

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“…Likewise, this study indicated that the AOC detected in the Diospyros LEs analyzed, not only varied among species but also among individual trees within a single season. A possible explanation for this behavior could be related to previous findings reporting that phenolic-like AOC in plants can be affected by several factors aside from domestication and genotype, such as growth stage, leaf position, and time of harvesting [41,42,43]. Nevertheless, the results derived from this study suggest that along with D. kaki leaf infusions, leaves of Mesoamerican Diospyros species can be considered as additional sources of antioxidant-rich properties.…”

Section: Discussionsupporting

confidence: 50%

Seasonal Changes in the Metabolic Profiles and Biological Activity in Leaves of Diospyros digyna and D. rekoi “Zapote” Trees

Ramírez-Briones¹,

Rodríguez-Macías²,

Salcedo-Pérez³

et al. 2019

Plants

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Leaves of semi-domesticated Diospyros digyna and wild D. rekoi trees, sampled seasonally in Mexico in 2014, were analyzed. Metabolic fingerprints revealed higher metabolite diversity in D. rekoi leaves. The TLC bands characteristic of glycosylated flavonoids, predominant in this species, matched the detection of quercetin and quercetin 3-O-glucuronides by liquid chromatography (UPLC-MS) of spring leaf extracts (LEs). Further gas chromatography (GC-MS) analysis revealed abundant fatty acids, organic acids, and secondary metabolites including trigonelline, p-coumaric, and ferulic and nicotinic acids. Phenolic-like compounds prevailed in D. digyna LEs, while unidentified triterpenoids and dihydroxylated coumarins were detected by UPLC-MS and GC-MS. A paucity of leaf metabolites in leaves of this species, compared to D. rekoi, was evident. Higher antioxidant capacity (AOC) was detected in D. digyna LEs. The AOC was season-independent in D. digyna but not in D. rekoi. The AOC in both species was concentrated in distinct TLC single bands, although seasonal variation in band intensity was observed among trees sampled. The AOC in D. digyna LEs could be ascribed to the coumarin esculetin. The LEs moderately inhibited phytopathogenic bacteria but not fungi. Leaf chemistry differences in these Mesoamerican Diospyros species substantiated previous variability reported in tree physiology and fruit physical chemistry, postulated to result from domestication and seasonality.

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Section: Discussionsupporting

confidence: 50%

Seasonal Changes in the Metabolic Profiles and Biological Activity in Leaves of Diospyros digyna and D. rekoi “Zapote” Trees

Ramírez-Briones¹,

Rodríguez-Macías²,

Salcedo-Pérez³

et al. 2019

Plants

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“…The highest concentrations ( p < 0.05) were found in ALGE and SULGE followed by SLGE and WLGE ( Figure 1 ). These data agree with those reported by Iqbal and Bhanger [ 30 ], Brahmi et al [ 31 ], and Sivaci and Duman [ 32 ], who evaluated the seasonal effect of phenolic content of moringa, olive, and almond leaves extracts, respectively. In the three studies, they found that autumn extracts presented the highest phenolic concentrations, in comparison with the samples of the other seasons.…”

Section: Resultssupporting

confidence: 92%

Seasonal Effect on the Biological Activities of Litsea glaucescens Kunth Extracts

López-Romero

González‐Ríos

Peña-Ramos

et al. 2018

Evidence-Based Complementary and Alternative Medicine

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This study shows the seasonal effect on the antioxidant, antiproliferative, and antimicrobial activities of L. glaucescens Kunth (LG) leaves extracts. Their antioxidant activity was evaluated through the DPPH, FRAP, and ORAC assays. Their phenolic content (PC) was determined by means of the Folin-Ciocalteu method, and the main phenolic compounds were identified through a HPLC-DAD analysis. Antiproliferative activity was determined by MTT assay against HeLa, LS 180, M12.C3.F6, and ARPE cell lines. Antimicrobial potential was evaluated against Staphylococcus aureus and Escherichia coli using a microdilution method. All the LG extracts presented high antioxidant activity and PC, with quercitrin and epicatechin being the most abundant. Antioxidant activity and PC were affected by the season; particularly autumn (ALGE) and summer (SULGE) extracts exhibited the highest values (p < 0.05). All extracts presented moderate antiproliferative activity against the cell lines evaluated, HeLa being the most susceptible of them. However, ALGE and SULGE were the most active too. About antimicrobial activity, SULGE (MIC90 < 800 μg/mL; MIC50 < 400 μg/mL), and SLGE (MIC50 < 1000 μg/mL) showed a moderate inhibitory effect against S. aureus. These findings provide new information about the seasonal effect on the PC and biological properties of LG extracts. Clearly, antioxidant activity was the most important with respect to the other two.

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“…It was found that total phenolics content in leaves and stems of almond varieties changed according to season and plant organ [ 16 ]. In the variants with CCC treatment of buckwheat plants at phase I (formation of buds) it was visible tendency of increasing content of total phenolics in the leaves on 9% compared to the control, Figure 1 .…”

Section: Resultsmentioning

confidence: 99%

Effect of chlorocholine chlorid on phenolic acids accumulation and polyphenols formation of buckwheat plants

Sytar

Borankulova

Hemmerich³

et al. 2014

Biol Res

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BackgroundEffect of chlorocholine chloride (CCC) on phenolic acids composition and polyphenols accumulation in various anatomical parts (stems, leaves and inflorescences) of common buckwheat (Fagopyrum esculentum Moench) in the early stages of vegetation period were surveyed.ResultsTreatment of buckwheat seeds with 2% of CCC has been increased content of total phenolics in the stems, leaves and inflorescences. On analyzing the different parts of buckwheat plants, 9 different phenolic acids – vanilic acid, ferulic acid, trans-ferulic acid, chlorogenic acid, salycilic acid, cinamic acid, p-coumaric acid, p-anisic acid, methoxycinamic acid and catechins were identified. The levels of identified phenolic acids varied not only significantly among the plant organs but also between early stages of vegetation period. Same changes as in contents of chlorogenic acid, ferulic acid, trans-ferulic acid were found for content of salycilic acid. The content of these phenolic acids has been significant increased under effect of 2% CCC treatment at the phase I (formation of buds) in the stems and at the phase II (beginning of flowering) in the leaves and then inflorescences respectively. The content of catechins as potential buckwheat antioxidants has been increased at the early stages of vegetation period after treatment with 2% CCC.ConclusionsThe obtained results suggest that influence of CCC on the phenolics composition can be a result of various mechanisms of CCC uptake, transforming and/or its translocation in the buckwheat seedlings.

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Evaluation of seasonal antioxidant activity and total phenolic compounds in stems and leaves of some almond (Prunus amygdalus L.) varieties

Cited by 25 publications

References 21 publications

Seasonal Changes in the Metabolic Profiles and Biological Activity in Leaves of Diospyros digyna and D. rekoi “Zapote” Trees

Seasonal Changes in the Metabolic Profiles and Biological Activity in Leaves of Diospyros digyna and D. rekoi “Zapote” Trees

Seasonal Effect on the Biological Activities of Litsea glaucescens Kunth Extracts

Effect of chlorocholine chlorid on phenolic acids accumulation and polyphenols formation of buckwheat plants

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