scholarly journals Essential Oil Profile, Phenolic Content and Antioxidant Activity of Geranium kikianum

2017 ◽  
Vol 12 (2) ◽  
pp. 1934578X1701200 ◽  
Author(s):  
Sanja Ćavar Zeljković ◽  
Kit Tan ◽  
Sonja Siljak-Yakovlev ◽  
Milka Maksimović
Keyword(s):  
Antioxidant Activity ◽  
Essential Oil ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Volatile Oil ◽  
Total Phenolic ◽  
Residual Water ◽  
Oil Composition ◽  
Phytochemical Investigation ◽  
Dpph Method

This work presents the first phytochemical investigation of Geranium kikianum Kit Tan & G. Vold (Geraniaceae), a species endemic to the southern Peloponnese, Greece. The essential oil from aerial parts of the plant was isolated by hydrodistillation and its chemical composition characterized by GC-MS. A total of 26 compounds were identified, constituting 98.3% of the oil composition. Oxygenated sesquiterpenes were the main group of constituents (75.4%). The major component of the oil was the sesquiterpene ketone germacrone (45.6%). Eleven alcohols represented the most diverse chemical class in the volatile oil (36.3%), and phytol was the most abundant acyclic diterpene alcohol (11.4%). The volatile compounds and residual water remaining after hydrodistillation were screened for their radical-scavenging activity by the DPPH method. IC 50 values ranged from 0.2±0.03 mg/mL for the undiluted decoction to 69.7±0.5 mg/mL for the essential oil. The significant antioxidant activity of the residual water, comparable with that of the widespread synthetic antioxidant BHT (0.2±0.01 mg/mL), and almost tenfold higher than thymol (1.90 ± 0.04 mg/mL), correlates with a high content of total phenolic compounds (100.2±1.7 mg GAE/g), and flavonoids (11.9±1.2 mg GAE/g).

scholarly journals Total Phenolic Content and Antioxidative Properties of Commercial Tinctures Obtained from Some Lamiaceae Plants

2012 ◽  
Vol 7 (12) ◽  
pp. 1934578X1200701 ◽  
Author(s):  
Adam Kowalczyk ◽  
Izabela Biskup ◽  
Izabela Fecka
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Mentha Piperita ◽  
Trolox Equivalent Antioxidant Capacity ◽  
Total Phenolic ◽  
Abts Assay ◽  
Dpph Method

The antioxidant level of commercial tinctures from three Lamiaceae plants, Salvia officinalis, Mentha piperita, and Melissa officinalis, have been determined by the Folin-Ciocalteu method, the 2.2-diphenyl-2-picrylhydracyl hydrate (DPPH) radical scavenging technique and ABTS assay. Total phenolic content was expressed as GAE (gallic acid equivalent) and ranged from 0.24 to 3.99 mg/mL. Antioxidant activity in the ABTS assay, calculated as TEAC (Trolox equivalent antioxidant capacity), ranged from 23.5 to 35.6 μmol Trolox/mL, while in the DPPH method, the EC50 value ranged from 0.04 to 0.07 mL/assay. Radical scavenging activity was correlated with total phenolic content. Correlations between ABTS and F-C methods, DPPH and F-C methods and ABTS and DPPH methods were calculated. The obtained results can be useful as additional information about the antioxidant activity of galenical preparations.

Essential Oil and Hydrosol Extract Chemical Composition, Phytochemicals of Algerian Rhus pentaphylla Desf. and its Antioxidant Activity

2020 ◽  
Vol 16 (5) ◽  
pp. 627-638
Author(s):  
Nassima Benmansour ◽  
Asma Allal ◽  
Chaouki Selles ◽  
Boufeldja Tabti ◽  
Alain Muselli
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Chemical Compositions ◽  
Antioxidant Power ◽  
Promising Source

Background: Rhus pentaphylla Desf. (Anacardiaceae) widely grown in Algeria, is an underutilized plant and remains poorly studied. To investigate for the first time, the chemical composition profile of essential oil and hydrosol extract; besides Total Phenolic (TPC), Flavonoid (TFC) and Condensed Tannins Contents (CTC) of fruits, leaves and roots, the fatty acid composition was assessed. The radical scavenging activity of R. pentaphylla extracts was then evaluated. Methods: Essential oil and hydrosol extract were isolated respectively by hydrodistillation and liquidliquid- extraction from the aerial parts of R. pentaphylla. The antioxidant activity was evaluated using 2,2-Diphenyl-1-Picrylhydrazyl (DPPH) radical and ferric reducing antioxidant power (FRAP). Chemical compositions of various extracts were investigated using Gas Chromatography (GC) and GC-Mass Spectrometry (GC-MS). Results: The results of GC and GC-MS analysis revealed 83 components in essential oil and 75 components in hydrosol extract representing respectively 96.9% and 92.5% of the total extract composition. The main constituents were hexadecanoic acid (31.5%) followed by spathulenol (14.9%) in the oil while the higher amount present in the hydrosol extract was of spathulenol (14.2%). Otherwise, 13 and 18 fatty acids were identified in roots and fruits respectively. The highest levels of TPC and CTC were found in roots extracts while the highest quantity of TFC has been recorded in the leaves extract. Besides, hydrosol extract was able to scavenge DPPH and FRAP free radicals more efficiently than essential oil. Conclusion: R. pentaphylla contains bioactive substances that could be used as a new promising source of antioxidant compounds in different applications.

scholarly journals Free radical scavenging activity, total phenolic and flavonoid contents of mulberry (Morus spp. L., Moraceae) extracts

2012 ◽  
Vol 66 (4) ◽  
pp. 547-552 ◽  
Author(s):  
Marija Radojkovic ◽  
Zoran Zekovic ◽  
Senka Vidovic ◽  
Drago Kocar ◽  
Pavle Maskovic
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Phenolic Components ◽  
Dpph Method ◽  
Morus Spp ◽  
Phenolic And Flavonoid

Mulberry (Morus spp. L., Moraceae) fruits, leaves, bark and branch have been used in traditional medicine as diuretic, hypoglycemic and hypotensive. The mechanism of their effects is correlated with the content of active components. Objective of this work was to evaluate and compare antioxidant properties of different extracts of two Morus species growing in Serbia: Morus alba L. (white mulberry) and Morus nigra L. (black mulberry). Potential antioxidant activity, content of antioxidant compounds (phenolics and flavonoids) and radical scavenging capacity, tested by DPPH method, were evaluated. The phenolic and flavonoid composition of different Morus extracts was determined by the HPLC method. The extracts prepared from fruits, leaves and roots of M. alba and M. nigra exhibited different characteristics. The highest extraction yield was achieved by M. alba leaves extraction (23.40%). M. nigra roots extract shown the highest total phenolics (186.30 mg CAE/g), while highest total flavonoids content (67.37 mg RE/g) was determined for M. nigra leaves extracts. In addition, black mulberry leaves extracts with the highest antioxidant activity had the highest phenolic acids contents. The dominant phenolic components in the samples were rutin and chlorogenic acid. All investigated mulberry dry extracts shown high content of phenolic compounds and significant antioxidant activity. This work contributes to knowledge of the antioxidant properties of Morus species. The obtained results may be useful in the evaluation of new dietary supplements and food products.

Composition and Antioxidant Activity of the Volatile Oil of Bamboo Leaves from Different Provenances

2011 ◽  
Vol 108 ◽  
pp. 320-325
Author(s):  
Hai Bing Liao ◽  
Chong Jiu Hu ◽  
Ke Yuan
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Volatile Oil ◽  
Relative Content ◽  
Gas Chromatography Mass Spectrometry ◽  
Chemical Components ◽  
Total Phenolic ◽  
Bamboo Leaves

The volatile oil of the four different bamboo leaves fromPhyllostachys violascenscv.notata,Sinobambusa tootsik(sieb.) Makino,Sasa subglabraMcClure andPleioblastus kongosanensisf.aureostriaus was obtained by steam distillation; their chemical components were separated and identified by gas chromatography-mass spectrometry (GC-MS). The relative percentage content of the components from the volatile oil was determined by area normalization method. The DPPH free radical scavenging activity (IC50) of the volatile oil was tested by the use of Trolox as a control. The experimental results show that there are 15 kinds of compounds which all simultaneity contained in the volatile oil of four different provenances of bamboo leaves. In four different provenances of volatile oil of bamboo leaves, the relative content of eugenol was obviously higher than other components, were 38.47%, 48.73%, 35.85% and 18.40% respectively. The relative content of the total phenolic were 51.96%, 51.78%, 40.06%, 22.81% respectively. The four different bamboo leaves volatile oil all have the ability of scavenging DPPH free radical and the IC50are 1.16 mg/ml, 1.44 mg/ml, 1.57 mg/ml, 1.71 mg/ml, respectively. The antioxidant activity of the essential oil has a positive correlation with the essential oil's concentration. The result of the experiments can provide reference for further research on the chemical components of different bamboo leaves volatile oil as well as for the exploration and utilization of it.

scholarly journals Chemo-typing of Three Egyptian Rosemary Oil for Their Chemical Composition and Anti-oxidant Activity

2020 ◽  
pp. 9-14
Author(s):  
Menna I. Elshorbagy ◽  
Marwa Elsbaey ◽  
Hany N. Baraka ◽  
Mohamed Farid Lahloub
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Radical Scavenging Activity ◽  
Standard Procedure ◽  
Radical Scavenging ◽  
Volatile Oil ◽  
Fused Silica ◽  
Dpph Assay

Aims: To study the chemical composition of volatile oil samples from different place in Egypt (Mansoura, Gamsa and Assuit) and study their antioxidant activity determined by DPPH assay. Study Design: Hydro distillation of volatile oil samples and their GC/MS analysis and determination of their antioxidant activity by DPPH assay. Place and Duration of Study: Department of Pharmacognosy, Faculty of pharmacy, Mansoura university, Egypt, between June 2015 and November 2017.   Methodology: The essential oil was isolated by hydro-distillation for 5 h using a Clevenger-type all-glass apparatus according to the standard procedure of the European pharmacopeia and volatile oils analysis was performed by GC and GC-MS. GC analysis was carried out using Focus-DSQ-ӀI GC/MS instrument (Thermo Scientific, MA, USA) equipped with TR-5 fused silica column (30 m × 0.25 mm, film thickness 0.25 µm). Results: The yield of the essential oils of three rosemary plants growing in Mansoura (RM), Gamsa (RG) and Assiut (RA) were 0.20% v/w, 0.32% v/w and 0.24% v/w, respectively. Their chemical composition was analyzed by GC/MS, RM and RG were found to be α-pinene dominated chemotypes, 32.4% and 29.6%, respectively, meanwhile RA was camphor dominated chemotype (17.2%). Furthermore, their antioxidant activity was determined by DPPH assay. Their IC50 values of essential oils of RM, RG and RA were 8.66 ± 0.7, 8.18 ± 0.5 and 9.74 ± 0.2, respectively. Conclusion: The GC/MS spectral data revealed the considerable difference between the chemical composition of essential oil constituents of RM, RG and RA which lead to different chemotypes. The present results also demonstrate that REO obtained from different areas in Egypt exhibited free radical scavenging activity determined by DPPH assay due to the synergistic effect between their constituents.

scholarly journals ANTIOXIDANT ACTIVITY (PHENOL AND FLAVONOID CONTENT ) OF THREE DIFFERENT CULTIVARS OF PIPER BETLE L. (PIPERACEAE)

2018 ◽  
Vol 8 (5-s) ◽  
pp. 143-148
Author(s):  
SAPARA SEKHAR HARINI ◽  
Pagadala R Sougandhi ◽  
DR SHOBHA RANI TENKAYALA ◽  
Kamalamma Ramalingam Gopinath
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Piper Betle ◽  
Drug Preparation ◽  
Phenol Content ◽  
Flavonoid Content ◽  
Antioxidant Power ◽  
Dpph Method

In the present study, an attempt has been made for the estimation of total phenol and flavonoid content and their radical scavenging properties using Piper betle (L.) leaves. In that, Cultivars i.e., Nov Bangla (NB), Sirugamani-1 (SGM-1) and Halisar Sanchi (HS) were selected for this study. The total phenolic content was ranged from 95.04 to 127.33 mg/100g equivalent to gallic acid and flavonoids were ranged from 51.72 to 61.08 mg/ 100g equivalent to standards of Catechin.  In vitro antioxidant activity was estimated using 1,1-diphenyl-2-picryl hydrazyl (DPPH), free radical scavenging activity, improved ABTS radical cation decolorization assay and ferric reducing antioxidant power (FRAP) assay. Among all the cultivars, The highest Phenol content (93.79%) was observed  for Sirugamani-1 by DPPH method  and highest Phenol content (96.12% & 6791.86 (µg/g) was obtained  for Halisar Sanchi by ABTS assay and FRAP activity  respectively. The study revealed that the leaves of Piper betle (L.) has higher amount of antioxidant activity and it could be used for any novel drug preparation.

Evaluation of antioxidant and Anthelmintic activity of methanolic flower extract of Nyctanthes arbor-tristis

2018 ◽  
Vol 9 (1) ◽  
pp. 78
Author(s):  
Vijaya Jyothi M ◽  
Bhargav E ◽  
Pavan Kumar K ◽  
Praneeth Gowd K ◽  
Ram Pavan S
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Iridoid Glycosides ◽  
Radical Scavenging ◽  
Anthelmintic Activity ◽  
Total Phenolic ◽  
Standard Drug ◽  
Flower Extract ◽  
Reducing Ability ◽  
Total Flavonoids Content

Nyctanthes arbour-tristis is a shrub belongs to the family Oleaceae. The flowers of this plant are fragrant since the presence of flavonol glycosides. It has also been reported for the presence of β-sitosterol, iridoid glycosides, tannins etc., and known to have immunostimulant, hepatoprotective, antiviral and antifungal activities. In the present study an attempt is made to identify antioxidant capacity and anthelminthic potential of methanolic flower extract of Nyctanthes arbour-tristis. Antioxidant activity was evaluated by total phenolic content assay, total flavonoids content assay, free radical scavenging activity and reducing ability methods. Anthelmintic activity was evaluated on Perithima posthuma using Piperazine citrate as standard drug. The results obtained for the above activities reveals that Nyctanthes arbour-tristis shows considerable antioxidant activity for all the methods and anthelminthic potential at 300 mg/ml. Keywords: arbour-tristis; antioxidant activity; anthelminthic activity; Perithima posthuma; Piperazine citrate.

scholarly journals Antioxidant Activity in Rheum emodi Wall (Himalayan Rhubarb)

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2555
Author(s):  
Sang Koo Park ◽  
Yoon Kyung Lee
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ethyl Acetate Fraction ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Polyphenol Content ◽  
Abts Assay ◽  
Ic50 Values

Using natural products as antioxidant agents has been beneficial to replace synthetic products. Efforts have been made to profile the antioxidant capacities of natural resources, such as medicinal plants. The polyphenol content of Himalayan rhubarb, Rheum emodi wall, was measured and the antioxidant activity was determined using DPPH and ABTS+ assay, and the oxidative stress was assessed using SOD enzymatic assay. Five different solvent fractions, n-hexane, n-butanol, ethyl acetate, dichloromethane, and water, were used for screening the antioxidant capacity in effort to determine the optimum extraction solvent. The total phenolic contents for R. emodi fractions ranged from 27.76 to 209.21 mg of gallic acid equivalents (GAE)/g of dry weight. DPPH and ABTS+ assay results are presented into IC50 values, ranged from 21.52 to 2448.79 μg/mL and 90.25 to 1718.05 μg/mL, respectively. The ethyl acetate fraction had the highest antioxidant activity among other fractions. Also, n-butanol and water fractions showed significantly lower IC50 values than the positive control in DPPH radical scavenging activity. The IC50 values of SOD assay of fractions ranged from 2.31 to 64.78 μg/mL. A similar result was observed with ethyl acetate fraction showing the highest SOD radical scavenging activity. The study suggests that the ethyl acetate fraction of R. emodi possess the strongest antioxidant activity, thus the most efficient in extracting antioxidant contents. Moreover, a highly significant correlation was shown between total polyphenol content and antioxidant activity screening assays. The compounds related to the antioxidant activity of R. emodi were identified to myricitrin, myricetin 3-galloyl rhamnoside, and myricetin, which have not been reported in studies about R. emodi before.

scholarly journals New insights of phenolic compounds from optimized fruit extract of Ficus auriculata

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Shahinuzzaman ◽  
Parul Akhtar ◽  
N. Amin ◽  
Yunus Ahmed ◽  
Farah Hannan Anuar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Total Phenolic ◽  
Fruit Extract ◽  
Optimum Extraction

AbstractIn this study, the extraction conditions extracted maximize amounts of phenolic and bioactive compounds from the fruit extract of Ficus auriculata by using optimized response surface methodology. The antioxidant capacity was evaluated through the assay of radical scavenging ability on DPPH and ABTS as well as reducing power assays on total phenolic content (TPC). For the extraction purpose, the ultrasonic assisted extraction technique was employed. A second-order polynomial model satisfactorily fitted to the experimental findings concerning antioxidant activity (R2 = 0.968, P < 0.0001) and total phenolic content (R2 = 0.961, P < 0.0001), indicating a significant correlation between the experimental and expected value. The highest DPPH radical scavenging activity was achieved 85.20 ± 0.96% at the optimum extraction parameters of 52.5% ethanol (v/v), 40.0 °C temperature, and 22 min extraction time. Alternatively, the highest yield of total phenolic content was found 31.65 ± 0.94 mg GAE/g DF at the optimum extraction conditions. From the LC–ESI–MS profiling of the optimized extract, 18 bioactive compounds were tentatively identified, which may regulate the antioxidant activity of fruits of F. auriculata.

scholarly journals Antioxidant and Anticancer Activities of Wampee (Clausena lansium(Lour.) Skeels) Peel

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
K. Nagendra Prasad ◽  
Jing Hao ◽  
Chun Yi ◽  
Dandan Zhang ◽  
Shengxiang Qiu ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Total Phenolic ◽  
Liver Carcinoma ◽  
Scavenging Activity ◽  
Anticancer Activities

Antioxidant activities of wampee peel extracts using five different solvents (ethanol, hexane, ethyl acetate, butanol and water) were determined by using in-vitro antioxidant models including total antioxidant capability, 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging activity, reducing power, and superoxide scavenging activity. Ethyl acetate fraction (EAF) exhibited the highest antioxidant activity compared to other fractions, even higher than synthetic antioxidant butylated hydroxyl toluene (BHT). In addition, the EAF exhibited strong anticancer activities against human gastric carcinoma (SGC-7901), human hepatocellular liver carcinoma (HepG-2) and human lung adenocarcinoma (A-549) cancer cell lines, higher than cisplatin, a conventional anticancer drug. The total phenolic content of wampee fraction was positively correlated with the antioxidant activity. This is the first report on the antioxidant and anticancer activities of the wampee peel extract. Thus, wampee peel can be used potentially as a readily accessible source of natural antioxidants and a possible pharmaceutical supplement.

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