Antioxidant activity of phenolic components present in barks of Azadirachta indica, Terminalia arjuna, Acacia nilotica, and Eugenia jambolana Lam. trees

Sultana, Bushra; Anwar, Farooq; Przybylski, Roman

doi:10.1016/j.foodchem.2007.01.019

Cited by 435 publications

(316 citation statements)

References 37 publications

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“…Phenolic compound is one class of polar compounds that acting as antioxidants. The antioxidative activity of phenolic compounds play an important role in absorption and neutralization of free [15]. Antioxidant activity of salam leaves extracts are also performed by using the ABTS method.…”

Section: Dpph and Abts Assaymentioning

confidence: 99%

Antioxidant Activity of <i>Syzygium polyanthum</i> Extracts

et al. 2017

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Antioxidant activities of Syzygium polyanthum leaves extracts (methanol, ethyl acetate, dichloromethane and nhexane) were evaluated by using DPPH (2,2-diphenyl-2-picrylhydrazyl) and ABTS (2, ABSTRAK Aktivitas antioksidan ekstrak daun Syzygium polyanthum telah dievaluasi menggunakan metode DPPH (2,2-diphenyl-2-picrylhydrazyl) dan ABTS (2,2'-azinobis (3-ethylbenzothiazole-6-sulfonic acid). Ekstrak metanol menunjukkan aktivitas antioksidan yang paling besar dibandingkan ekstrak lain melalui uji DPPH dengan nilai IC

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Section: Dpph and Abts Assaymentioning

confidence: 99%

Antioxidant Activity of <i>Syzygium polyanthum</i> Extracts

et al. 2017

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“…Type and amount of phenolic compounds varied with plant, maturation, season, etc. (Sultana et al 2007). When calculated with reference to lead seed, the highest amount of phenolic compounds (2.2-2.3 g GA equivalent/ 100 g lead seed) were obtained (P<0.05) when hot water and water were used as extraction solvents.…”

Section: Effect Of Extraction Solvent On Yield Compositions and Antimentioning

confidence: 99%

Antioxidant activities of lead (Leucaena leucocephala) seed as affected by extraction solvent, prior dechlorophyllisation and drying methods

et al. 2012

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Extracts of brown lead (Leucaena leucocephala) seed prepared using different extraction solvents were determined for antioxidative activities using different assays. The highest yield (3.4-4.0%) was obtained when water was used as an extraction solvent, compared with all ethanolic extracts used (1.2-2.0 %) (P<0.05). Much lower chlorophyll content was found in the water extract. When hot water was used, the resulting extract contained lower total phenolic and mimosine contents (P<0.05). In general, 60-80 % ethanolic extracts had higher 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activities, ferric reducing antioxidant power (FRAP) and metal chelating activity than water extracts (P<0.05). When brown lead seed was dechlorophyllised prior to extraction, the water extract had slightly increased yield with lower chlorophyll content. Nevertheless, prior chlorophyll removal resulted in the increase in antioxidative activities but lower total phenolic and mimosine contents (P<0.05). Generally, phenolic compounds and mimosine were more released when water was used as the extraction solvent, while the lower amount of chlorophyll was extracted. Oven-drying exhibited the negative effect on antioxidative activities and mimosine content. The higher antioxidative activities with concomitant higher total phenolic and mimosine contents were found in water extract dried by freeze drying. Thus, extraction solvent, dechlorophyllisation and drying methods directly influenced the yield and antioxidative activity of lead seed extract.

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“…The highest level of scavenging activity was measured in the methanol extract (1.36 ±0.07 Mm TE/g DW) followed by the n-hexane fraction is about 1.01 ±0.04 Mm TE /g DW. Similarly, in another investigation by Sultana et al (2007), methanol extract was found to be the solvent extracting the most effi ciently antioxidants. Ethyl acetate and aqueous fractions have moderate activity (0.8 ±0.11 and 0.12 ±0.03 Mm ET/g DW, respectively).…”

Section: Abtsmentioning

confidence: 72%

Effect of extraction solvents on the biomolecules and antioxidant properties of Scorzonera undulata (Asteraceae): Application of factorial design optimization phenolic extraction

Athmouni

Belghith

Bellassouad

et al. 2015

Acta Sci Pol Technol Aliment

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Background. Phenolic compounds were extracted and isolated from S. undulata roots. Methods. Sample of roots from E. hirta was tested for phenolic compounds, and in vitro antioxidant activity by diphenyl-1-picrylhydrazyl (DPPH) assay, ABTS, FRAP and reducing power was measured using cyanoferrate method. Results. The methanolic fraction exhibited the highest total phenol content (6.12 ±0.11 mg AGE/g DW). On the other hand, the highest fl avonoids concentration was observed in ethyl acetate fraction (2.90 ±0.05 mg CE/g DW) in addition to anthocyanins (28.56 ±3.96 mg/l). Besides, the highest level of tannins content was measured in the polar aprotic solvent ethyl acetate extract (3.25 ±0.06 mg CE/g DW). The different extracts of S. undulata were evaluated for their radical scavenging activities by means of the DPPH assay. The strongest scavenging activity was observed in methanolic fraction scavenged radicals effectively with IC 50 values of 0.14 ±0.02 mg/ml. Similarly, the potassium ferricyanide reduction (FRAP) and ABTS•+ of methanol extract. On the other hand, the total reducing power of ethyl acetate extract was found higher than of other extracts. This paper presents the application of the design-of experiment method for optimizing the extraction of phenolic content using methanol solvent. The resulting regression model has shown that the effect of temperature is not statistically signifi cant (with >95% certainty), while that of agitation speed is. The two main effects are contributed by the solvent concentration and the maceration period. Conclusion. Our results clearly showed that the extraction of phenolic compounds and their antioxidant capacity is signifi cantly affected by solvent combinations. S. undulata presented the highest total phenolic content, total fl avonoids content and antioxidant capacity values. The resulting regression model has shown that the effect of temperature is not statistically signifi cant (with >95% certainty), while that of agitation speed is.

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Antioxidant activity of phenolic components present in barks of Azadirachta indica, Terminalia arjuna, Acacia nilotica, and Eugenia jambolana Lam. trees

Cited by 435 publications

References 37 publications

Antioxidant Activity of <i>Syzygium polyanthum</i> Extracts

Antioxidant Activity of <i>Syzygium polyanthum</i> Extracts

Antioxidant activities of lead (Leucaena leucocephala) seed as affected by extraction solvent, prior dechlorophyllisation and drying methods

Effect of extraction solvents on the biomolecules and antioxidant properties of Scorzonera undulata (Asteraceae): Application of factorial design optimization phenolic extraction

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