Determination of Total Phenolic, Flavonoid Content and Antimicrobial Properties in Different Solvent Extracts of Viburnum opulus L. (Gilaburu) in Afyonkarahisar

This study determined the antimicrobial and antioxidant activities of chloroform, ethyl acetate, methanol, and water extracts of the Viburnum opulus (V. opulus) plant. V. opulus (Gilaburu) was collected from Ahırdağı northern slope, Kırka Town, Afyonkarahisar region, and its leaves, branches, and fruit parts were dried and powdered at room temperature. The total phenolic content was compared with the gallic acid standard, the total flavonoid content with the quercetin standard, and the iron chelating effect with the EDTA standard. All extracts were evaluated for antimicrobial activity against Escherichia coli, Staphyllococcus aureus, and Candida glabrata strains by the agar well diffusion method. Gilaburu is widely used in Turkey, especially in alternative medicine. It has been determined that the fruit part of the plant has better antimicrobial properties, and the amount of phenolic compounds increases in more polar solvents. In conclusion, the use of Gilaburu as a medicinal drug can be achieved with new research on bioactive substances, especially in fruit extract.

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Determination of Biological Activities of the Root Bark of Senna singueana

Asian Journal of Chemical Sciences ◽

10.9734/ajocs/2020/v7i419029 ◽

2020 ◽

pp. 25-34

Author(s):

Kidanemariam Teklay Hilawea ◽

Zelalem Yibralign Desta

Keyword(s):

Antibacterial Activity ◽

Biological Activities ◽

Total Flavonoid ◽

Diffusion Method ◽

Total Phenolic ◽

Phytochemical Analysis ◽

Root Bark ◽

Total Flavonoid Content ◽

Flavonoid Content

Aims: Senna singueana is a medicinal plant which is used for the treatment of different kinds of diseases and the plant was selected for the study because of its numerous uses. The main objective of this study was to determine the antioxidant and antibacterial activity of the extracts of the root barks of S. singueana. Methodology: The antibacterial activities of the extracts (determination of Minimal Inhibitory “MIC” and Minimal Bactericidal Concentration “MBC”) were determined by using agar well diffusion method. In addition to this the total flavonoid and total phenolic contents were determined by using aluminum chloride colorimetric complex assay and Folin-Ciocalteu method respectively. Results: Our results revealed that the total flavonoid content of the extracts is ranged from 30.39 mgQE/100 g to 240.83 mgQE/100 g. The extracts also showed good antioxidant activity and total phenolic content as well as weak to moderate antibacterial activity against some bacteria. Conclusions: The extracts of the root bark of Senna sinueana showed good total flavonoid content, DPPH radical scavenging activity and antibacterial activity. In addition to this, the extracts also showed the presence of some important compounds by phytochemical analysis.

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Phenolic Composition and Skin-related Properties of the Aerial Parts Extract of Different Hemerocallis Cultivars

Antioxidants ◽

10.3390/antiox9080690 ◽

2020 ◽

Vol 9 (8) ◽

pp. 690 ◽

Cited By ~ 1

Author(s):

Katarzyna Szewczyk ◽

Małgorzata Miazga-Karska ◽

Wioleta Pietrzak ◽

Łukasz Komsta ◽

Barbara Krzemińska ◽

...

Keyword(s):

Antimicrobial Properties ◽

Total Phenolic ◽

Phenolic Composition ◽

Flavonoid Content ◽

Eastern Asia ◽

High Concentration ◽

Health Value ◽

Aerial Parts ◽

Bioactive Agents

Hemerocallis plants are important vegetables with nutritional and health value, especially in eastern Asia, where they have been used as medicines to cure disease such as depression and inflammation for thousands of years. The present study concerns the determination of flavonoids and phenolic acids, as well as antioxidant, anti-collagenase, anti-elastase, anti-tyrosinase and antimicrobial properties of taxa cultivated in Poland. For chemical composition estimation, LC-ESI-MS/MS analysis and spectrophotometric assays were performed. The results show the presence of sixteen compounds in all analyzed species. Among the investigated cultivars, it was found that H. “Chicago Apache” and H. fulva var. kwanso have the highest total phenolic acid and flavonoid content. The most abundant compounds in all analyzed extracts were chlorogenic acid (209.8 to 1010.0 µg/g of DE) and quercetin-3-O-rutinoside (114.7 to 1049.7 µg/g of DE). The studied extracts exhibited moderate to high skin-related activities. These properties were correlated with a high concentration of polyphenols. The present study demonstrated that Hemerocallis cultivars contain significant amounts of phenolic compounds with good skin-related activities and could be interesting as novel sources of bioactive agents for the pharmaceutical, food and cosmetic industries.

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Survey of Chinese Cowpea Cultivars for Phenolic Compounds and Antioxidant Activity

Current Topics in Nutraceutical Research ◽

10.37290/ctnr2641-452x.17:337-348 ◽

2018 ◽

Vol 17 (4) ◽

pp. 337-348

Author(s):

Bai Zhouya ◽

Huang Xiaojun ◽

Meng Jinxia ◽

Kan Lijiao ◽

Nie Shaoping

Keyword(s):

Phenolic Compounds ◽

Phenolic Content ◽

Antioxidant Activities ◽

Jiangxi Province ◽

Total Phenolic ◽

Total Flavonoid Content ◽

Flavonoid Content ◽

Comprehensive Investigation ◽

Cowpea Cultivars ◽

P Distribution

Distribution of phenolic compounds and antioxidant activities was surveyed in 24 varieties of Chinese cowpea from 4 provinces. Identity of phytochemicals were determined by UPLC-ESIQTOF-MS/MS and quantified by HPLC-ESI-QqQ-MS/MS. Seven phenolic acids, 16 flavonoids and 9 other compounds were identified and several of these were quantified. Quercetin-3-glucoside and kaempferol-glucoside were the major phenolic compounds. In addition, our study indicated that OJYDH cultivar from Jiangxi province had the highest total phenolic content, total flavonoid content and stronger antioxidant activities than other cowpea cultivars. This study made a comprehensive investigation on antioxidants from cowpea and provided the useful data to support its function.

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Determination of antioxidant activity and phenolic compounds for basic standardization of Turkish propolis

Applied Biological Chemistry ◽

10.1186/s13765-021-00608-3 ◽

2021 ◽

Vol 64 (1) ◽

Author(s):

Aslı Özkök ◽

Merve Keskin ◽

Aslı Elif Tanuğur Samancı ◽

Elif Yorulmaz Önder ◽

Çiğdem Takma

Keyword(s):

Antioxidant Capacity ◽

Caffeic Acid ◽

Caffeic Acid Phenethyl Ester ◽

Total Phenolic ◽

Scaling Analysis ◽

Flavonoid Content ◽

Multidimensional Scaling Analysis ◽

Flavonoid Quercetin ◽

Phenolic And Flavonoid

AbstractThis study aimed to determine the standard amount of antioxidant content and compounds of the propolis for the standardization of propolis. For this purpose, the total flavonoids, total phenolic, CUPRAC antioxidant capacity content and the diversity of phenolic and flavonoid components of these propolis samples were found by HPLC determined at the 23 propolis samples which were collected different regions of Turkey. Beside that, the similarities and differences of these 23 provinces to each other according to their antioxidant capacities were investigated by multidimensional scaling analysis. The total flavonoid content in the propolis samples were determined between 21.28 and 152.56 mg CE/g. The total phenolic content in the propolis samples was found between 34.53 mg and 259.4 mg GAE/g. CUPRAC antioxidant capacity of the propolis samples and antioxidant range was found from 95.35 to 710.43 mg TE/g. Also, 4 flavonoid [Quercetin (min.1.12–max.4.14 mg/g), Galangin (min.0.72–max.40.79 mg/g), Apigenin (min.1.07–max.17.35 mg/g), Pinocembrin (min.1.32–max.39.92 mg/g] and 6 phenolic acid [Caffeic acid (min.1.20–max.7.6 mg/g), p-Coumaric acid (min.1.26–max.4.47 mg/g), trans-Ferulic acid (min.1.28–max.4.92 mg/g), Protocatechuic acid (1.78 mg/g), trans-Cinnamic acid (min.1.05–max.3.83 mg/g), Caffeic Acid Phenethyl Ester (CAPE) (min.1.41–max.30.15 mg/g)] components were detected as mg/g, in different ratios in propolis samples collected from different regions. The feature of this study, so far, is to have the maximum number of samples representing the Turkish propolis, and so is thought to help to national and international propolis standard workings.

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Establishing Relationship between Vitamins, Total Phenolic and Total Flavonoid Content and Antioxidant Activities in Various Honey Types

Molecules ◽

10.3390/molecules26154399 ◽

2021 ◽

Vol 26 (15) ◽

pp. 4399

Author(s):

Norhasnida Zawawi ◽

Pei Juin Chong ◽

Nurul Nadhirah Mohd Tom ◽

Nurkhairina Solehah Saiful Anuar ◽

Salma Malihah Mohammad ◽

...

Keyword(s):

Antioxidant Capacity ◽

Phenolic Acids ◽

Antioxidant Activities ◽

Natural Antioxidants ◽

Total Phenolic ◽

Flavonoid Content ◽

Extrinsic Factors ◽

Biochemical Compounds ◽

Phenolic And Flavonoid

Honey is a well-known natural sweetener and is rich in natural antioxidants that prevent the occurrence of oxidative stress, which is responsible for many human diseases. Some of the biochemical compounds in honey that contribute to this property are vitamins and phenolic compounds such as phenolic acids and flavonoids. However, the extent to which these molecules contribute towards the antioxidant capacity in vitro is inconsistently reported, especially with the different analytical methods used, as well as other extrinsic factors that influence these molecules’ availability. Therefore, by reviewing recently published works correlating the vitamin, total phenolic, and flavonoid content in honey with its antioxidant activities in vitro, this paper will establish a relationship between these parameters. Based on the literature, vitamins do not contribute to honey’s antioxidant capacity; however, the content of phenolic acids and flavonoids has an impact on honey’s antioxidant activity.

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Phytochemical screening and in vitro antibacterial, antifungal, antioxidant and antitumor activities of the red propolis Alagoas

Brazilian Journal of Biology ◽

10.1590/1519-6984.182959 ◽

2019 ◽

Vol 79 (3) ◽

pp. 452-459 ◽

Cited By ~ 15

Author(s):

F. R. G. Silva ◽

T. M. S. Matias ◽

L. I. O. Souza ◽

T. J. Matos-Rocha ◽

S. A. Fonseca ◽

...

Keyword(s):

Antimicrobial Activity ◽

Antioxidant Activity ◽

Phenolic Compounds ◽

Gallic Acid ◽

Bioactive Metabolites ◽

Diffusion Method ◽

Total Phenolic ◽

Phytochemical Screening ◽

Dpph Method

Abstract The study aimed to evaluate the antimicrobial activity, antioxidant, toxicity and phytochemical screening of the Red Propolis Alagoas. Antimicrobial activity was evaluated by disk diffusion method. Determination of antioxidant activity was performed using the DPPH assay (1.1-diphenyl-2-picrylhydrazyl), FTC (ferric thiocyanate) and determination of phenolic compounds by Follin method. Toxicity was performed by the method of Artemia salina and cytotoxicity by MTT method. The phytochemical screening for the detection of allelochemicals was performed. The ethanol extract of propolis of Alagoas showed significant results for antimicrobial activity, and inhibitory activity for Staphylococcus aureus and Candida krusei. The antioxidant activity of the FTC method was 80% to 108.3% hydrogen peroxide kidnapping, the DPPH method showed an EC50 3.97 mg/mL, the content of total phenolic compounds was determined by calibration curve gallic acid, resulting from 0.0005 mg/100 g of gallic acid equivalent. The extract was non-toxic by A. salina method. The propolis extract showed high activity with a higher percentage than 75% inhibition of tumor cells OVCAR-8, SF-295 and HCT116. Chemical constituents were observed as flavonones, xanthones, flavonols, and Chalcones Auronas, Catechins and leucoanthocyanidins. It is concluded that the extract can be tested is considered a potential source of bioactive metabolites.

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ANTIOXIDANT PROFILE AND PHYTOCHEMICAL CONTENT OF DIFFERENT PARTS OF SUPER RED DRAGON FRUIT (HYLOCEREUS COSTARICENSIS) COLLECTED FROM WEST JAVA-INDONESIA

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2017.v10i12.21571 ◽

2017 ◽

Vol 10 (12) ◽

pp. 290 ◽

Cited By ~ 2

Author(s):

Irda Fidrianny ◽

Nadia Ilham ◽

Rika Hartati

Keyword(s):

Antioxidant Activities ◽

Antioxidant Properties ◽

Total Phenolic ◽

Flavonoid Content ◽

Phytochemical Content ◽

Dragon Fruit ◽

Dpph Method ◽

Dpph Scavenging Activity ◽

Dpph Scavenging ◽

Different Parts

Objectives: The goals of this research were to observe antioxidant properties from different parts of super red dragon fruit (Hylocereus costaricensis) using two antioxidant testing methods which were 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2’-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS).Methods: Antioxidant activities were determined using DPPH and ABTS assays, total phenolic content (TPC) using Folin–Ciocalteu reagent, flavonoid content by Chang’s method.Results: Inhibitory concentration 50% (IC50) of DPPH scavenging activity of all of the extracts in the range of 2.69 μg/ml was −94.17 μg/ml. The ethyl acetate peel extract of super red dragon fruit expressed the highest TPC (4.56 g GAE/100 g) and the highest total flavonoid content (12.63 g QE/100 g). TPC in flesh extract of super red dragon fruit had a negative and significant correlation with their IC50 of ABTS. The IC50 of DPPH and IC50 of ABTS of flesh extract of super red dragon fruit showed positive and significant correlation.Conclusion: All different parts extracts of super red dragon fruit (except n-hexane flesh extract) were categorized as a very strong antioxidant by DPPH method. Phenolic compounds in flesh extract of super red dragon fruit were the major contributor in antioxidant activities by ABTS method. DPPH and ABTS showed linear results in antioxidant activities of super red dragon fruit flesh extract.

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