Culinary Decoctions: Spectrophotometric Determination of Various Polyphenols Coupled with their Antioxidant Activities

Babili, Fatiha El; Babili, Mohammed E.L.; Souchard, Jean‐Pierre; Chatelain, C

doi:10.2174/2210290601304010015

Cited by 9 publications

(6 citation statements)

References 22 publications

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“…IC50for thyme methanol extract reported by (Albayrak et al, 2013). Our results show higher IC50 for thyme water extract as compared to IC50value for thyme water extract reported by (Babili et al, 2013).The present results show that antioxidant activity of 100 % methanol extract of thyme is higher than 100 % chloroform extract of thyme which correlates with results reported by (Hossain et al, 2013b). The present results show that ethanol has higher IC50 than methanol which is comparable to the results reported by (Roby et al, 2013).…”

Section: Dpph Radical Scavenging Activitysupporting

confidence: 89%

Variation in antioxidant attributes, individual phenolic acids composition and biological activities of Thymus Vulgaris: effects of extraction solvents

Mehmood¹,

Shafique²,

Tabassam³

et al. 2015

Int. J. Biosci.

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The present study was designed to analyze the different solvents effects on variation of different bioactive compounds and biological activities. The antioxidant activity of the thyme extracts was assessed by the determinations of total phenolic contents (TPC), total flavonoid contents (TFC), DPPH radical scavenging capacity and ferric reducing antioxidant power (FRAP); while qualitative and quantitative analysis of the individual phenolic acids was done by HPLC. Antimicrobial activity of extracts was evaluated by Disc diffusion method. The total extract yield from thyme using different solvents ranged from 9.6 -26.44 % (g/ 100g).Maximum extract yield was obtained with 100 % methanol while least with distill water. The values of TPC, TFC, DPPH radical scavenging activity (IC50) and FRAP (EC50) for thyme extracts ranged from 148.05 to 232.02 GAE mg/g of dry weight (DW), 25.17 to 162.20 CE mg/g DW, 0.97 to 4.15 mg/mL and 1248.05 to 2629.74 mg/mL, respectively. As per HPLC analysis, gallic acid and ρ-Coumaric acid with contribution 11.21 -98.76 mg/kg and 70.60 -578.59 mg/kg of extract, respectively, were detected to be the main phenolic acids in different extracts among others. Total amount of individual phenolic acids in different extracts varied over 36.05 to 719.77 mg/kg of extract. Highest amount of total phenolic acids was found with 80% methanol extract while the least with 100% methanol. Strongest antibacterial activity was shown by 80% ethanol extract. As far as extraction efficacy is concerned, methanol and ethanol were found to be most effective solvents among others towards extraction of antioxidants and phenolics from thyme.

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Section: Dpph Radical Scavenging Activitysupporting

confidence: 89%

Variation in antioxidant attributes, individual phenolic acids composition and biological activities of Thymus Vulgaris: effects of extraction solvents

Mehmood¹,

Shafique²,

Tabassam³

et al. 2015

Int. J. Biosci.

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“…The aqueous extract of Algerian lemon verbena leaves had a lower antiradical activity (IC 50 = 27.4 mg/mL) than that of the hydroalcoholic extract (IC 50 = 23.52 mg/mL) [ 44 ]. A decoction of verbena ( Verbena officinalis L.) had an IC 50 = 15.76 mg/mL [ 48 ]. Likewise, the lemon verbena of the Boussalem region was characterized by a notable activity for ABTS (IC 50 = 4.54 µg/mL) and a reducing power (IC 50 = 10.37 µg/mL).…”

Section: Resultsmentioning

confidence: 99%

Chemometric Profiling and Bioactivity of Verbena (Aloysia citrodora) Methanolic Extract from Four Localities in Tunisia

Tammar

Salem

Wannes

et al. 2021

Foods

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This research aimed to study the chemical composition of Aloysia citrodora methanolic extract and its biological activities as an antioxidant, and its antibacterial, antifungal and anti-inflammatory activities based on four bioclimatic collection stages. The contents of total phenols, total flavonoids and total tannins were determined. Nine phenolic compounds were identified by LC-DAD–ESI-MS/MS. The major compound was acteoside, a phenylpropanoid which represented about 80% of the methanolic fraction in the various regions. The antioxidant activities of different locations were measured by different analytical assays, such as DPPH, ABTS and iron reducing power. The results showed that phenolic compounds and antioxidant activities varied with climatic and environmental factors. Moreover, there was a significant dependency between regions and biological activities. The use of a principal component analysis showed that there was a close relationship among phenylpropanoids, phenolic compounds and the studied biological activities.

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“…The normal cell processes produce free radicals as a by-product, and antioxidants serve to neutralize them. Polyphenolic and flavonoid compounds, which are found in many fruits, vegetables, and tea, are believed to be among the main substances responsible for antioxidant activity 1,2 . This work is focused on estimation of polyphenolic and flavonoid content in fennel (Foeniculum vulgare) seeds, which are traditionally used for medicinal purposes and food flavoring 3 .…”

Section: Introductionmentioning

confidence: 99%

Extraction of Fennel (Foeniculum vulgare) Seeds: Process Optimization and Antioxidant Capacity of the Extracts

Angelov

Boyadzhieva

2016

Chem.Biochem.Eng.Q.

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This paper presents the study on the extraction of bioactive substances from fennel seeds. The impact of the main process variables (solvent composition, liquid-to-solid ratio, temperature, contact time) on the concentration of the target substances (polyphenols and flavonoids) in the extracts is studied resulting in the selection of a set of operating parameters, at which their content is maximized. Extracts with higher concentration of target compounds demonstrate higher antioxidant capacity, which confirms the contribution of these substances to better antioxidant performance. The performance of two types of solvents is compared: water and ethanol-water mixtures, showing that water extraction produces more concentrated extracts with higher antioxidant capacity. The extraction kinetics is simulated using Peleg's equation, and a good fit to experimental data is observed. Data for initial extraction rate and equilibrium concentrations is obtained. Based on the combination of experimental and simulation results, an equation is proposed for determination of antioxidant capacity of water extracts of fennel seeds when the phenolic concentration is known, and vice versa -calculation of concentration of polyphenolic compounds in extracts with known antioxidant capacity.

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Culinary Decoctions: Spectrophotometric Determination of Various Polyphenols Coupled with their Antioxidant Activities

Cited by 9 publications

References 22 publications

Variation in antioxidant attributes, individual phenolic acids composition and biological activities of Thymus Vulgaris: effects of extraction solvents

Variation in antioxidant attributes, individual phenolic acids composition and biological activities of Thymus Vulgaris: effects of extraction solvents

Chemometric Profiling and Bioactivity of Verbena (Aloysia citrodora) Methanolic Extract from Four Localities in Tunisia

Extraction of Fennel (Foeniculum vulgare) Seeds: Process Optimization and Antioxidant Capacity of the Extracts

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