Content of Phenolic Compounds in Various Sea Buckthorn Parts

Abstract All parts of the sea buckthorn (Hippophae rhamnoides L.) plant are considered to contain large amounts of compounds that are believed to have beneficial health effects. Till now, different parts of sea buckthorn plant have been used for the treatment of diseases in traditional medicine in various countries. Nevertheless, sea buckthorn parts would be a good raw material not only for medicinal properties but also for food products with functional properties; therefore, the aim of the research was to determine the concentration of different phenolic compounds and antioxidant activity in various sea buckthorn parts. The study was conducted on parts of female and male sea buckthorn bushes. Phenolic compounds (total phenols, total flavonoids and condensed tannins) and antioxidative activity (ferric reducing antioxidant power (FRAP) free radical scavenging activity (using 2.2-diphenyl-1-picrylhydrazyl, DPPH)) in ethanolic extracts of leaves, shoots, flowers, and berries were determined using various spectrophotometric methods. The study showed that concentration of phenolic compounds differed among parts of sea buckthorn plant and among gender. Leaves of female plants proved to be the most valuable, as they contained the highest total phenol concentration (165.76 mg/g) and antioxidant activity (220.97 mg/g for FRAP and 43.76 mg/g for DPPH), while lowest values were found in young shoots of male plants (84.94 mg/g, 94.24 mg/g and 24.63 mg/g, respectively). The significant differences in chemical composition and biological activity of sea buckthorn leaves, shoots, berries, and buds indicate a need for detailed studies of their extracts, specific fractions and compounds during a whole vegetative season.

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Comparative Evaluation of Argania spinosa and Olea europaea Leaf Phenolic Compounds and their Antioxidant Activity

Botanica ◽

10.2478/botlit-2020-0007 ◽

2020 ◽

Vol 26 (1) ◽

pp. 76-87

Author(s):

Aziza Lfitat ◽

Hind Zejli ◽

Abdelkamel Bousselham ◽

Yassine El Atki ◽

Badiaa Lyoussi ◽

...

Keyword(s):

Antioxidant Activity ◽

Phenolic Compounds ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Total Phenolic ◽

Olive Leaves ◽

Antioxidant Power ◽

Ferric Reducing Antioxidant Power ◽

Total Flavonoids Content

AbstractWe conducted this study to determine and compare the content of phenolic compounds and flavonoids in the argan and olive leaves as well as their antioxidant capacity in aqueous, methanolic, and ethyl acetate extracted fractions. In vitro antioxidant activity was evaluated in comparison with synthetic antioxidants by assessing DPPH• radical scavenging capacity, ferric reducing antioxidant power, scavenging ability by inhibiting the β-carotene/linoleic acid emulsion oxidation, and by the ABTS radical scavenging activity assay. Total phenolic content in argan samples ranged from 221.69 ± 2.07 to 1.32 ± 0.01 mg GAE/g DW and in olive samples from 144.61 ± 0.82 to 1.21 ± 0.02 mg GAE/g DW. Total flavonoids content in argan samples varied from 267.37 ± 1.12 to 25.48 ± 0.02 mg QE/g DW, while in olives from 96.06 ± 0.78 to 10.63 ± 0.05 mg QE/g DW. In vitro antioxidant studies strongly confirmed the antioxidant potency of argan and olive leaves and their richness in secondary metabolites that are effective in free radicals scavenging and metal chelating capacities, indicating their antioxidant power.

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Bioactive Compounds of Selected Fruit Juices

Natural Product Communications ◽

10.1177/1934578x0900400505 ◽

2009 ◽

Vol 4 (5) ◽

pp. 1934578X0900400 ◽

Cited By ~ 1

Author(s):

Aneta Wojdyłto ◽

Jan Oszmiański

Keyword(s):

Antioxidant Activity ◽

Phenolic Compounds ◽

Fruit Juice ◽

Biological Activities ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Sea Buckthorn ◽

Quercetin Derivatives ◽

Reducing Ability ◽

Wide Range

Fruits are one of the most important sources of phenolic compounds in our diet. Many of these compounds exhibit a wide range of biological activities, especially antioxidant activity. The objective of this study was to determine the composition and antioxidant activity of phenolic compounds found in fruit juice obtained from buckthorn, flowering quince, rowanberry and hawthorn. Hydroxycinnamic acids (neochlorogenic and chlorogenic acid) and procyanidins were the main phenolics in rowanberry juice. The highest level of flavonols (quercetin derivatives) was found in sea buckthorn. All juices showed strong free-radical scavenging activity against ABTS•+ radicals and ferric reducing ability measured by the FRAP method. The strongest antioxidant activity was found in rowanberry juice, but the lowest was measured in hawthorn and sea buckthorn juices.

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Antioxidant activity and polyphenol composition of Pistacia terebinthus fruit from Tessala (Western Algeria)

The North African Journal of Food and Nutrition Research - July-December 2021 ◽

10.51745/najfnr.5.11.30-34 ◽

2021 ◽

Vol 5 (11) ◽

pp. 30-34

Author(s):

Nazim Bellifa ◽

Abdelhak Ismail Benhaddou ◽

Houssem Eddine Ferkous ◽

Mohammed Adil Selka ◽

Houari Toumi ◽

...

Keyword(s):

Antioxidant Activity ◽

Antioxidant Activities ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Total Phenolic ◽

Antioxidant Power ◽

Scavenging Effect ◽

Coffee Substitute ◽

Ferric Reducing Antioxidant Power ◽

Pistacia Terebinthus

Background: Consumption of traditional herbal beverages has been generally increased in the last decades, Terebinth coffee, known as ‘‘menengic coffee’’ in Turkish, is one of the most consumed herbal coffees in Turkey, turpentine tree is one of the components of the Mediterranean bush, particularly in Algeria, known as Betoum el Kiffan is largely used as food and in traditional medicine. Aims: In this study, Total phenol, flavonoid content, and antioxidant activity of three extracts of Pistacia trebinthus fruit growing in Algeria was measured using radical scavenging activity tests and metal-related tests including, ferric-reducing antioxidant power (FRAP). The chemical composition profile of the fruits and the coffee brands was identified by thin-layer chromatography, the effects of roasting method of this fruit was rivaled also. Materials and Methods: The total phenolic content of the extracts was determined using the Folin-Ciocalteu method. All extracts of the terebinth fruits and coffee brands displayed a high DPPH scavenging effect. Results: The results of the ferric-reducing antioxidant power show that the reduction capacity is proportional to the increase in the concentration of the samples. All the extracts of the plant exhibit antioxidant activities lower than those of the reference product besides the infusion extract of the P. terebinthus roasted coffee, which is the most active with an optical density of 1.68 nm at a concentration of 400 μg/mL. The chromatography results show that the various extracts of Pistacia terebinthus fruit carry a large number of polyphenols, in particular the carboxylic acids phenols. Conclusions: The plant can be considered as a coffee substitute and opens up promising avenues for the food and pharmaceutical industry in Algeria. Keywords: Antioxidant, Pistacia terebinthus, Coffee, FRAP, polyphenol.

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Influence of Packaging Material on Polyphenol Content and Antioxidant Activity in Some Commercial Beers

Processes ◽

10.3390/pr9040620 ◽

2021 ◽

Vol 9 (4) ◽

pp. 620

Author(s):

Mihaela Mirela Bratu ◽

Semaghiul Birghila ◽

Antoanela Popescu ◽

Bogdan-Stefan Negreanu-Pirjol ◽

Marius Radu ◽

...

Keyword(s):

Antioxidant Activity ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Polyphenol Content ◽

Total Polyphenol ◽

Antioxidant Power ◽

Phenolic Contents ◽

Significant Difference ◽

Ferric Reducing Antioxidant Power ◽

Lager Beer

Using two methods (ferric reducing antioxidant power and radical scavenging activity), the total polyphenol content (Folin–Ciocalteu reagent) and polyphenol patterns (HPLC) in 10 commercial lager beer brands produced in Romania was determined. Samples bottled in glass, plastic and aluminium packages were analysed for each brand when available. Results have indicated considerable variations in the total and individual phenolic contents as well as antioxidant activity across beer brands. Gallic and feulic acids were the dominant phenolic compounds identified samples. The statistical analysis indicates a significant difference between the levels of antioxidant activity detected using DPPH and FRAP, for all three types of material considered. The statistical test ANOVA indicates that the polyphenol concentration is similar across all types of material.

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Antioxidant Activities of Ethanol Extracts from Zanthoxylum avicennae

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.472.801 ◽

2014 ◽

Vol 472 ◽

pp. 801-804

Author(s):

Xi Feng Li ◽

Nan Nan Zheng ◽

Lu Tang ◽

Wei Xiao Zhang ◽

You Xu Wang ◽

...

Keyword(s):

Antioxidant Activity ◽

Antioxidant Activities ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Scavenging Activity ◽

Frap Assay ◽

Antioxidant Power ◽

Ferric Reducing Antioxidant Power ◽

Ethanol Extracts ◽

Dpph Radical Scavenging

The Zanthoxylum avicennae 95% EtoH extracts after concentration were dissolved in H2O and extracted with EtoAc and n-BuOH Successively. The n-BuOH layer was added to Diaion HP-20 macroporous resin column, then the resin was washed by distilled water to get rid of impurity, then washed by 20%, 40% and 60% methanol individually, and obtained M20, M40and M60respectively. And antioxidant activity was assessed using three methods: DPPH radical-scavenging activity, ABTS+radical-scavenging activity, ferric reducing antioxidant power (FRAP) assay. The results indicate that TEAC value of M40were higher than other part extracted from Zanthoxylum avicennae 95% EtoH extracts during three methods .The results of the experiments also can find M40is the strongest antioxidant activity part in Zanthoxylum avicennae 95% EtoH extracts and provide reference for further isolating the part M40.

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Influence of Packaging Material on Polyphenol Content and Antioxidant Activity in Some Commercial Beers

10.26434/chemrxiv.12245549 ◽

2020 ◽

Author(s):

Mihaela Mirela Bratu ◽

Semaghiul Birghila ◽

Antoanela Popescu ◽

Bogdan Stefan Negreanu- Pirjol ◽

Marius Radu

Keyword(s):

Antioxidant Activity ◽

Plastic Material ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Packaging Material ◽

Polyphenol Content ◽

Antioxidant Power ◽

Phenolic Contents ◽

Dpph Method ◽

Ferric Reducing Antioxidant Power

<div><div><div><div><p>Using two methods (ferric reducing antioxidant power and radical scavenging activity), the total polyphenol content (Folin–Ciocalteu reagent) and polyphenol patterns (HPLC) in 10 commercial lager beer brands produced in Romania was determined. Samples bottled in glass, plastic and aluminium packages were analysed for each brand when available. Results have indicated considerable variations in the total and individual phenolic contents as well as antioxidant activity across beer brands. A statistical analysis was performed to assess the influence of packaging type on the antioxidant activity and phenolic content of the beers. Statistical differences were found between the DPPH and FRAP methods in glass, aluminium and plastic material. Moreover, the antioxidant activity based on the DPPH method is influenced by the type of packaging material, while in the case of FRAP method, no statistical difference was reported. Furthermore, the same analysis has shown that the polyphenol concentration is invariant to the type of material.</p></div></div></div></div>

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Phenolic Profile and Antioxidant Activity of Propolis Extracts From Poland

Natural Product Communications ◽

10.1177/1934578x19849777 ◽

2019 ◽

Vol 14 (5) ◽

pp. 1934578X1984977 ◽

Cited By ~ 3

Author(s):

Magdalena Woźniak ◽

Lucyna Mrówczyńska ◽

Agnieszka Waśkiewicz ◽

Tomasz Rogoziński ◽

Izabela Ratajczak

Keyword(s):

Antioxidant Activity ◽

Phenolic Compounds ◽

Radical Scavenging Activity ◽

Antioxidant Properties ◽

Radical Scavenging ◽

Reducing Power ◽

Ethanolic Extract ◽

Natural Material ◽

Antioxidant Power ◽

Antioxidant Agents

Propolis is a natural material collected by honeybees, containing bioactive compounds that exhibit biological activity. The aim of this study was to assess the chemical composition of Polish propolis extracted with two different concentrations of ethanol, namely 70% and 96%, and to evaluate their antioxidant activity depending on extraction conditions. Samples of Polish propolis were extracted with 70% and 96% ethanol in order to obtain the ethanolic propolis extracts EEP70 and EEP96, respectively. Concentrations of 10 flavonoids and 6 phenolic acids were determined using the UPLC-PDA-TQD system. The antioxidant properties were determined based on the DPPH· free radical scavenging activity, Fe3+ reducing power assay, and ferrous ions (Fe2+) chelating activity assays. Moreover, the effects of the propolis extracts on human red blood cell morphology , the selective permeability of their membrane, as well as on free radicals-induced hemolysis were also assessed. Qualitative and quantitative analyses of both propolis extracts indicated that 70% ethanolic extract contained higher amounts of phenolic compounds than 96% ethanolic extract. The levels of antioxidant activity indicated that both Polish propolis extracts exhibited a high and comparable antioxidant power. The concentration of ethanol used for extraction had no effect on the antioxidant potential of propolis. The presented results indicate that the extracts of Polish propolis are rich in phenolic compounds and are very effective as antioxidant agents. Therefore, they may be applied as a constituent of products used in phytotherapy regardless of the concentration of ethanol used in propolis extraction.

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Comparison of phenolic profiles and antioxidant activity of three Ornithogalum L. species

Turkish Journal of Biochemistry ◽

10.1515/tjb-2018-0011 ◽

2018 ◽

Vol 44 (3) ◽

pp. 299-306

Author(s):

Gülin Renda ◽

Arzu Özel ◽

Emine Akyüz Turumtay ◽

Burak Barut ◽

Büşra Korkmaz ◽

...

Keyword(s):

Antioxidant Activity ◽

Phenolic Compounds ◽

Protocatechuic Acid ◽

Radical Scavenging ◽

Coumaric Acid ◽

Antioxidant Power ◽

Aerial Parts ◽

Phenolic Profiles ◽

Ferric Reducing Antioxidant Power ◽

First Time

Abstract Background Aboveground parts and bulbs of Ornithogalum species are consumed as food and used in traditional medicine in worldwide. Objective It is aimed to report the antioxidant capacity and phenolic compounds content of Ornithogalum sigmoideum, Ornithogalum orthophyllum and Ornithogalum oligophyllum for the first time. Materials and methods Antioxidant activity of the crude methanol extracts of the aerial parts and the bulbs of the species were determined with 1,1-diphenyl-2-picryl-hydrazyl, superoxide radical scavenging, ferrous ion-chelating effect, phosphomolybdenum-reducing antioxidant power and ferric-reducing antioxidant power assay. The ethylacetate, diethylether and water subextracts from leaf and flower were analyzed to quantify selected phenolic compounds by HPLC-UV. Results Among the six extracts, the methanol extract of the aerial parts of O. orthophyllum contained the highest amount of phenolic compounds (GAE, 11.0 mg/g extract). The aerial parts of O. orthophyllum showed higher DPPH and SOD activities than the other extracts with the SC50 values of 0.39±0.05 mg/mL and 0.44±0.08 mg/mL, respectively. Protocatechuic acid, p-hydroxybenzoic acid, vanillic acid and p-coumaric acid were the most abundant compounds at all the subextracts. Conclusion The antioxidant activity is found to be in accordance with the levels of phenolic content in the extracts.

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Evaluation of Antioxidant Extraction by Microwave Treatment from Japanese Indigo Plant

10.21203/rs.3.rs-204466/v1 ◽

2021 ◽

Author(s):

Akihiro Suzuki ◽

Yoshitoshi Nakamura ◽

Chikako Asada

Keyword(s):

Antioxidant Activity ◽

Phenolic Compounds ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Microwave Treatment ◽

Water Soluble ◽

Raw Material ◽

Treatment Conditions ◽

Water Soluble Extract ◽

Dpph Radical Scavenging

Abstract Tadeai (Awa-ai) is an indigo plant that is produced in large quantities in Tokushima prefecture, Japan. The leaves of Tadeai are used for dyeing (Ai-zome), but there is no use for the other parts, i.e. flowers, stems, leaves, and roots, most of which are discarded. In this study, we search for new ways to use Tadeai including parts other than the leaves and examined the antioxidant activity of water soluble extract from Tadeai. To extract antioxidants efficiently, processing was undertaken using a microwave irradiation device. The evaluation of Tadeai extract and its antioxidant activity was performed by measuring the amount of phenolic compounds by the Folin–Ciocalteu method and the DPPH radical scavenging activity test. Compared to the sample that was not subjected to microwave treatment, the amount of phenolic compounds was observed to be double, and the antioxidant activity eight times higher. The microwave treatment conditions that showed the best results are 200 ℃ and 1 min, and the evaluation indicated that the part that exhibits the best results is the root. Furthermore, the differences among Tadeai varieties were also examined. The best result was for the “Kojoko Akahana;” the root of the “Kojoko Akahana” exhibited the highest antioxidant effect. Its amount of phenolic compounds and EC50 value were 44.1 mg-catechin equiv./g-dry sample and 0.018 g/L, respectively. In this study, it was shown that the antioxidant activity of the parts other than the leaves is high, so it is expected that Tadeai waste will be effectively utilized as a raw material for producing antioxidants in the future.

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