Seasonal variation of antioxidant activity and phenolic content of Pseudevernia furfuracea, Evernia prunastri and Ramalina farinacea from Morocco

Aoussar, Noura; Rhallabi, Naima; Mhand, Rajaa Aït; Manzali, R.; Bouksaim, Mohamed; Douira, Allal; Mellouki, Fouad

doi:10.1016/j.jssas.2018.03.004

Cited by 33 publications

(30 citation statements)

References 31 publications

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“…Benzoic acid content BR cultivar was higher in the present study that that (0.077–0.508 mg/100 g) reported by Mishra et al [ 39 ]. Seasonal variation, soil conditions, cultivar type, agricultural practice and storage conditions have significant effects on the bioactive profiles of natural resources [ 43 , 44 , 45 , 46 ]. These factors play a vital role in analyzing the concentrations of bioactive compounds in different studies.…”

Section: Resultsmentioning

confidence: 99%

Unraveling the Bioactive Profile, Antioxidant and DNA Damage Protection Potential of Rye (Secale cereale) Flour

et al. 2021

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Six different solvents were used as extraction medium (water, methanol, ethanol, acidified methanol, benzene and acetone) to check their phenolics extraction efficacy from flour of two rye cultivars. Rye extracts with different solvents were further analyzed for the estimation of phytochemicals and antioxidant properties. Different tests (TPC, TAC, DPPH, FRAP, ABTS, RPA and CTC) were performed to check the antioxidant properties and tannin contents in extracts. A bioactive profile of a rye cultivar indicated the presence of total phenolic compounds (0.08–2.62 mg GAE/g), total antioxidant capacity (0.9–6.8 mg AAE/g) and condensed tannin content (4.24–9.28 mg CE/100 g). HPLC was done to check phenolics in rye extract with the best solvent (water), which indicated the presence of Catechol (91.1–120.4 mg/100 g), resorcinol (52–70.3 mg/100 g), vanillin (1.3–5.5 mg/100 g), ferulic acid (1.4–1.5 mg/100 g), quercetin (4.6–4.67 mg/100 g) and benzoic acid (5.3 mg/100 g) in rye extracts. The presence of DNA damage protection potential in rye extracts indicates its medicinal importance. Rye flour could be utilized in the preparation of antioxidant-rich health-benefiting food products.

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Section: Resultsmentioning

confidence: 99%

Unraveling the Bioactive Profile, Antioxidant and DNA Damage Protection Potential of Rye (Secale cereale) Flour

et al. 2021

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“…Our plant materials were collected in the time when TPC is highest according to many published studies. 47 Our antifungal activity findings are relatively high. All extracts had antifungal activities, when ethanolic extracts were most active, and that of C. joppensis is the highest.…”

Section: Resultsmentioning

confidence: 71%

Total Phenolic Content, Antioxidant Capacity and Antifungal Activity of Extracts of Carthamus tenuis and Cephalaria joppensis

Azab¹

2018

ECB

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Three different extracts (aqueous, ethanolic and ethyl acetate) of Carthamus tenuis and Cephalaria jopprnsis were prepared and tested for total phenolic content (TPC), antioxidant capacity and antifungal activity. Results for C. tenuis are meaningfully different of known findings. As for C. joppensis, the medicinal and biological properties of this plant were never published before. For each plant, TPC was highest in aqueous extracts and these had highest antioxidant capacity. Ethanolic extracts of both plants had strongest activity against Rhizopus stolonifer (black mold).

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“…According to the study of Aoussar et al . ( 41 ), the highest phenolic content of Pseudevernia furfuracea , Evernia prunastri and Ramalina farinacea grown in Morocco was determined during late winter and spring when temperatures were lower and precipitation rates higher. Numerous studies have also confirmed that the phenolic content can be strongly influenced by climatic conditions, harvesting location, time and phenological plant stage ( 42 , 43 ).…”

Section: Resultsmentioning

confidence: 90%

The Mastic Tree (Pistacia lentiscus L.) Leaves as Source of BACs: Effect of Growing Location, Phenological Stage and Extraction Solvent on Phenolic Content

Dragović

Dragović–Uzelac

Pedišić

et al. 2020

Food Technol. Biotechnol.

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Research background. Mastic tree (Pistacia lentiscus L.) of the Anacardiaceae family is an evergreen shrub from Mediterranean countries where it is used in traditional medicine. Analysis of P. lentiscus leaf, stem, fruit and root extracts showed high concentrations of principal groups of secondary metabolites (flavonoids, phenolic acids and tannins), suggesting the plant possesses great biological potential. Therefore, the aim of this research is to evaluate the impact of environmental parameters and the extraction solvent type on the concentration of phenols in mastic tree leaf extracts grown at four different locations along the Adriatic coast (Barbariga, Lun, Hvar and Vela Luka) during three phenological stages (early flowering, early fruiting and late fruiting). Experimental approach. Since mastic tree plant has phenolic compounds with different structures and chemical properties, ethanolic and methanolic leaf extracts were analysed using high-performance liquid chromatography (HPLC) coupled with UV/Vis PDA detector. Phenolic compounds were identified by comparing the retention times and spectral data with those of standards at 280 and 340 nm. Results and conclusions. In all samples, phenolic acids and flavonol glycosides were quantified, while catechin was quantified only in methanolic extracts. The 5-O-galloylquinic acid was determined as a predominant phenolic compound in all samples followed by monogalloyl glucose, 3,5-di-O-galloylquinic acid, 3,4,5-tri-O-galloylquinic acid and gallic acid, respectively. Myricetin-3-O-rhamnoside was found to be the predominant flavonol glycoside followed by myricetin-3-O-glucoside, myricetin-3-O-glucuronide, quercetin-3-O-rhamnoside and derivative of flavonol glycoside. The mass concentration of these compounds significantly varied during different phenological stages, at different growing locations and used extraction solvents. The highest phenolic mass concentration was determined in the samples harvested at Hvar growing location and extracted in 80 % methanol. The highest total phenolic acid mass concentration was obtained in the samples harvested during the flowering phenological stage and the highest total flavonoid mass concentration in the samples harvested during the early fruiting stage. Novelty and scientific contribution. The obtained data provide a better understanding of the P. lentiscus species phenolic concentration, which can lead to further investigations regarding the valorisation of mastic tree leaves as pharmaceutical products or as food products with added value.

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Seasonal variation of antioxidant activity and phenolic content of Pseudevernia furfuracea, Evernia prunastri and Ramalina farinacea from Morocco

Cited by 33 publications

References 31 publications

Unraveling the Bioactive Profile, Antioxidant and DNA Damage Protection Potential of Rye (Secale cereale) Flour

Unraveling the Bioactive Profile, Antioxidant and DNA Damage Protection Potential of Rye (Secale cereale) Flour

Total Phenolic Content, Antioxidant Capacity and Antifungal Activity of Extracts of Carthamus tenuis and Cephalaria joppensis

The Mastic Tree (Pistacia lentiscus L.) Leaves as Source of BACs: Effect of Growing Location, Phenological Stage and Extraction Solvent on Phenolic Content

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