Total phenolic, flavonoid and tannin contents and antioxidant and antimicrobial activities of organic extracts of shoots of the plant Limonium delicatulum

Medini, Faten; Fellah, Hanen; Ksouri, Riadh; Abdelly, Chédly

doi:10.1016/j.jtusci.2014.01.003

Cited by 248 publications

(193 citation statements)

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“…They are considered as one of the most potent and therapeutically useful natural components because of the antioxidant, anticancer, antimicrobial, antiviral and anti-inflammatory activities [28]. Total phenolic contents of plants depend on species and different organs [23]. Comparing with previous results reported in some other Quercus species, total phenolic contents of all extracts in this study showed higher quantities.…”

Section: Discussionsupporting

confidence: 50%

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Antioxidant Capacity and Phenolic Contents of Three Quercus Species

Tuyen

Khang

et al. 2016

ILNS

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ABSTRACT. The antioxidant capability and phenolic contents of ethanol extracts (free phenolics) and ethyl acetate extracts (bound phenolics) of three Quercus species were estimated in this work. The antioxidant activities were examined by 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) free radical, reducing power and -carotene bleaching methods. HPLC was employed to detect major phenolic acids. The leaf extract of Q. salicina contained maximum total phenolics while the highest total flavonoid content was found in the leaf extract of Q. serrata. The antioxidant activities varied among three species. Bark extract of Q. salicina was the most potential and it was closed to levels of the standard antioxidative dibutyl hydroxytoluene (BHT). The bark extract of Q. serrata also showed promising antioxidant activities despite their eminence was negligibly lower than Q. salicina. Stronger antioxidant activities of free phenolics than those of the bound phenolics may be attributed to higher quantities of free phenolics in the barks of Quercus species, however total flavonoids may not contribute a critical role. By HPLC analysis, thirteen phenolic acids were detected in the leaf and bark extracts. Of them, Q. salicina showed maximum in number (ten compounds) and quantities of detected phenolic acids. Ellagic, chlorogenic and benzoic acids were dominant in Quercus species. Findings of this study revealed that leaves and barks of three Quercus species are rich source of antioxidants, and Q. salicina is the most promising and should be elaborated to exploit its pharmaceutical properties.

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Section: Discussionsupporting

confidence: 50%

“…The total phenolic contents of the extracts were determined using the Folin-Cicalteau method described by Medini et al [23]. Briefly, an amount of 0.125 mL of the extracts (free or bound) was mixed with 0.5 mL of distilled water and 0.125 mL of Folin-Cicalteau's reagent was added.…”

Section: Determination Of Total Phenolic Contentmentioning

confidence: 99%

Antioxidant Capacity and Phenolic Contents of Three Quercus Species

Tuyen

Khang

et al. 2016

ILNS

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“…75% acetone gave the highest TFC (414.60±7.60mg QE/1g DW) followed by 50% (364.82±38.47mg QE/1g DW) while the least TFC (37.22±5.91mg QE/1g DW) was observed in 75% chloroform. Our result agrees with the findings of Medini et al (2014) who report that total flavonoids in Limonium delicatulum flowers were best extracted using 80% acetone. Boulekbache-Makhlouf et al (2013) also report that flavonoids from Solanum melongena byproducts are best extracted using 70% acetone.…”

Section: Total Flavonoid Contentsupporting

confidence: 93%

Influence of Extraction Solvent on Antioxidant Properties of Guiera senegalensis J.F. Gmel (Combretaceae) Leaves

Kankara¹,

Go²

2017

Nig J Bas App Sci

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Guiera senegalensis is widely used in West Africa for traditional medicine. In Northern Nigeria, it is used for general well-being by women during postpartum recovery period. In this study, we report the effect of extraction solvents viz acetone, chloroform, ethanol, methanol (each at 50% and 75% concentrations) and water on the phenolic antioxidant and antioxidant activity of it's leaves. Total Phenolic Content (TPC) and Total Flavonoid Content (TFC) assays were used to determine the phenolic antioxidants. Antioxidant activity was evaluated by measuring scavenging effect on 2,2 ꞌ -diphenyl-1-picrylhydrazyl (DPPH) radical, Ferric Reducing Antioxidant Power (FRAP) and Total Antioxidant Capacity (TAC) using phosphomolybdate assay. Results shows that extraction solvents significantly (P<0.05) affect phenolic antioxidants extraction and antioxidant properties. Highest TPC value (109.20±3.99mg GAE/100g DW) was obtained in 75% ethanol. 75% acetone showed the highest TFC value (414.60±7.60mg QE/100g DW). Highest DPPH radical scavenging activity (95.82±0.63%) was observed in water solvent. 50% chloroform showed the best FRAP value (282.73±29.80mg AAE/100g DW). While 75% methanol showed the highest TAC value (102.44±3.44mg AAE/1g DW). Based on its highest TFC value as well as its insignificant differences with other solvents that showed higher values for TPC, FRAP and TAC, 75% acetone appeared to be the solvent for extracting phenolic antioxidants. Correlations study indicates highly significant positive (p< 0.001) linear correlations between phenolic antioxidants and antioxidant activities. The highest correlation (r 2 = 0.845) was observed between TFC and TAC followed by TFC and DPPH (r 2 = 0.733). Another significant correlation (r 2 = 0.659) was also observed between TFC and FRAP. Further studies aimed at isolating and identifying specific compounds responsible for antioxidant activity in G. senegalensis are recommended.

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“…Several previous studies reported that the antioxidant property of plants and their phenolic contents are highly correlation [1,10,32,33]. This study indicated a highly significant correlation between phenolic contents and antioxidant activities in extracts of Castanopis species (Table 5).…”

supporting

confidence: 63%

Phenolic Compounds and Antioxidant Activity of Castanopsis phuthoensis and Castanopsis grandicicatricata

Tuyen

Khang

Minh

et al. 2016

ILNS

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Abstract:In this study, total phenolic and flavonoid contents, antioxidant capacity, and phenolic compositions of Castanopsis phuthoensis and Castanopsis grandicicatricata (Fagaceae family) were investigated. It was found that bark extracts were rich of phenolic contents, whereas leaf extracts were abundant of flavonoids. The total phenolics varied from 11.20 to 35.47 mg gallic acid equivalent g -1 dry weight (DW), and the total flavonoids were from 2.24 to 12.55 mg rutin equivalent g -1 DW. The results of antioxidant activity evaluation showed that the DPPH (1,1-diphenyl-2-picryl-hydrazyl) radical scavenging activity of the free phenolic extracts were higher than the bound phenolic extracts. Regarding the reducing power and β-carotene bleaching assays, the free phenolic extracts showed remarkably strong antioxidant capacity that were similar to the levels of the standard BHT (dibutyl hydroxytoluene) did. It could be concluded that free phenolic extracts were more effective in antioxidant activities than bound phenolic extracts. Highly significant correlations were observed between phenolic contents and antioxidant activities (0.813 for DPPH and 0.841 for reducing power). By HPLC analysis, seven phenolic acids were detected including gallic, p-hydroxybenzoic, vanillic, sinapic, p-coumaric, ellagic acids, and vanillin. Of which, gallic, ellagic, and sinapic acids were the most abundant compounds in the two species. The results suggest C. phuthoensis and C. grandicicatricata contain rich sources of natural antioxidants and phenolic compounds which are probably considered in pharmaceutical use.

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Total phenolic, flavonoid and tannin contents and antioxidant and antimicrobial activities of organic extracts of shoots of the plant Limonium delicatulum

Cited by 248 publications

References 24 publications

Antioxidant Capacity and Phenolic Contents of Three <i>Quercus</i> Species

Antioxidant Capacity and Phenolic Contents of Three <i>Quercus</i> Species

Influence of Extraction Solvent on Antioxidant Properties of Guiera senegalensis J.F. Gmel (Combretaceae) Leaves

Phenolic Compounds and Antioxidant Activity of <i>Castanopsis</i> <i>phuthoensis</i> and <i>Castanopsis</i> g<i>randicicatricata</i>

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