scholarly journals Antioxidant Activity and Isolation of Luteoline fromCentaurea behenL. Grown in Iran

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Akbar Esmaeili ◽  
Zahra Mousavi ◽  
Maryam Shokrollahi ◽  
Ali Shafaghat
Keyword(s):  
Antioxidant Activity ◽  
High Performance ◽  
Biological Activities ◽  
Uv Spectroscopy ◽  
Multiple Bond ◽  
New Drugs ◽  
Terrestrial Plants ◽  
Total Extract ◽  
Aerial Parts ◽  
Soxhlet Apparatus

Flavonoids are secondary metabolites providing Ultraviolet-visible (UV) spectroscopy protection and color in almost all terrestrial plants and fruits. They have a fused ring system consisting of an aromatic ring and a benzopyran ring with a phenyl substituent. As their biological activities have an impact on human health, they serve as target molecules in the development of new drugs. The objective of this research was to study the antioxidant activity and chemical analysis of the luteoline fromCentaurea behenL. (Compositae family). The aerial parts of powdered and driedC. behenwere extracted with methanol (MeOH) in a Soxhlet apparatus over a period of 2 days. The concentrated total extract was extracted with petroleum ether, diethylether, and methanol. From the methanol extract of the aerial parts ofC. behen, the flavonoid derivative (luteoline) was identified. The aerial parts’ extract demonstrated effective antioxidant activity measured in terms of half-maximal inhibitory concentration (IC50). The product extract has been isolated by UV, column chromatography (CC), and preparative high-performance liquid chromatography (HPLC). The structures involved were elucidated by1H and13C nuclear magnetic resonance (NMR) and heteronuclear multiple-bond correlation (HMBC) spectra. The compound identified had not been reported in previous studies ofC. behenL.

scholarly journals Comparison of Antioxidant Activity and Main Active Compounds Among Different Parts of Alpinia officinarum Hance Using High-Performance Thin Layer Chromatography-Bioautography

2019 ◽  
Vol 102 (3) ◽  
pp. 726-733 ◽  
Author(s):  
Wan-Xin Zhang ◽  
In-Cheng Chao ◽  
De-jun Hu ◽  
Farid Shakerian ◽  
Liya Ge ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Quality Control ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Aerial Parts ◽  
Alpinia Officinarum ◽  
Layer Chromatography ◽  
Different Parts ◽  
Tof Ms

Abstract Background: Alpinia officinarum Hance (ginger family) is an important Chinese medicine, especially in Southern China. Objective: A simple and effective high-performance thin-layer chromatography coupled with 2, 2-diphenyl-1-picrylhydrazyl bioautography (HPTLC-DPPH) and electrospray ionization quadrupole time-of-flight tandem mass spectrometry (ESI-Q-TOF-MS/MS) method was developed for the bioactivity-based quality control of A. officinarum. Methods: The HPTLC-DPPH and ESI-Q-TOF-MS/MS were applied for the analysis of different parts of A. officinarum after using methanol extraction for 23 batches of taproot, four batches of aerial, and three batches of fibril parts. Results: The systematic evaluation showed that similar components in taproot and aerial parts make the major antioxidant activity. However, based on our evaluation, the antioxidant ability of the aerial parts is lower than the taproot parts. There is also a significant difference (P < 0.05) between taproot and fibril parts of the root. The chemical structures of compounds with the antioxidant capacity were tentatively identified as 5R-hydroxy-7-(4-hydroxy-3-methoxyphenyl)-1-phenyl-3-heptanone (band 1), kaempferide (band 2), and galangin (band 3) based on ESI-Q-TOF-MS/MS analytical results and further confirmed by standards. Conclusions: This identification indicated that two flavonoid compounds and one diarylheptanoid compound possessed high potentials to be used as the antioxidant biomarkers for the quality control of A. officinarum. Highlights: The comparison of different parts could be considered as guidelines for the usage of A. officinarum.

scholarly journals Phytochemical Investigation of Aerial Parts of Iraqi Cardaria draba

2020 ◽  
Vol 29 (2) ◽  
pp. 27-36
Author(s):  
Alaa M. Abd ◽  
Enas J. Kadhim
Keyword(s):  
High Performance Liquid Chromatography ◽  
Phenolic Acid ◽  
High Performance ◽  
Chemical Constituents ◽  
Aqueous Methanol ◽  
Plant Materials ◽  
Aerial Parts ◽  
Phytochemical Investigation ◽  
Soxhlet Apparatus ◽  
Layer Chromatography

 The aim of this study was to study chemical constituents of aerial parts of Cardaria draba since no phytochemical investigation had been studied before in Iraq. Aerial parts of Cardaria draba were defatted by maceration in hexane for 72 h. The defatted plant materials were extracted using Soxhlet apparatus, the aqueous Methanol 90% as a solvent extraction for 18 h, and fractionated with petroleum ether- chloroform (CHCl3)- ethylacetate- and n-butanol respectivly. The ethyl acetate, n-butanol, and n-butanol after hydrolysis fractions were investigated by high performance liquid chromatography (HPLC) and thin-layer chromatography (TLC) for its phenolic acid and flavonoid contents. Flavonoids and phenolic acid derivative were isolated from the ethylacetate of leaf fraction and n-butanol after hydrolysis fraction of the aerial parts and identified by TLC, FTIR and HPLC. A various chromatographic and spectroscopic results shown the presence of luteolin, chlorogenic acid, caffeic acid, and resorcinol in aerial parts of C. draba.                                                                                                                              

scholarly journals HPLC - DAD Analysis of Lycorine in Amaryllidaceae Species

2010 ◽  
Vol 5 (6) ◽  
pp. 1934578X1000500
Author(s):  
Gulen Irem Kaya ◽  
Derya Cicek ◽  
Buket Sarıkaya ◽  
Mustafa Ali Onur ◽  
Nehir Unver Somer
Keyword(s):  
High Performance ◽  
Biological Activities ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Array Detector ◽  
Simple Method ◽  
Aerial Parts ◽  
Liquid Chromatographic Method ◽  
Low Mass ◽  
Liquid Chromatographic

Lycorine, the most frequent alkaloid found in Amaryllidaceae plants, has been proven to have various biological activities. Therefore, it is important to quantify this compound in Amaryllidacaeae species. In this study, a reversed-phase high performance liquid chromatographic method has been used and validated for the determination of lycorine in Amaryllidaceae plants. A simple method for the extraction of lycorine in low-mass plant samples was employed utilizing columns pre-packed with diatomaceous earth (Extrelut®). This method was applied to the aerial parts and bulbs of Sternbergia sicula Tineo ex Guss., S. lutea (L.) Ker-Gawl. ex Sprengel and Pancratium maritimum L. (Amaryllidaceae) collected during two different vegetation periods. The chromatographic separation was performed using an isocratic system with a mobile phase of trifluoroacetic acid-water-acetonitrile (0.01:90:10) applied at a flow rate 1 mL min−1 using diode array detector. Validation procedures showed that the method was specific, accurate and precise. The amount of lycorine in S. sicula samples ranged between 0.10-0.53%, whereas in those of S. lutea and P. maritimum, the range was 0.19-0.40% and 0.05-0.14%, respectively.

scholarly journals PHYTOCHEMICAL CONSTITUENTS AND ANTIOXIDANT EFFECT OF SOLANUM ROSTRATUM SPECIES FROM ALGERIA T

2018 ◽  
Vol 11 (6) ◽  
pp. 219
Author(s):  
Tebboub Omar ◽  
Labib Noman ◽  
Bouhroume Mohamed ◽  
Feyza Oke Altuntas ◽  
Ibrahim Demirtas
Keyword(s):  
Antioxidant Activity ◽  
Structure Elucidation ◽  
High Performance ◽  
Radical Scavenging ◽  
Chloroform Extract ◽  
Antioxidant Effect ◽  
Flavonoid Glycosides ◽  
Aerial Parts ◽  
Solanum Rostratum ◽  
Radical Scavenging Ability

Objective: The aim of this study was to isolate the constituents and evaluate the antioxidant activity of Solanum rostratum Dunal (Solanaceae) from Algeria. Methods: In this study, phytochemical analyses of the chloroform, ethyl acetate, and n-butanol extracts obtained from the aerial parts of S. rostratum were performed by column chromatography, thin-layer chromatography, and high-performance liquid chromatography techniques. The antioxidant activity was performed by 2,2-diphenyl-1-picrylhydrazyl scavenging assay method.Results: The identification and structure elucidation of the isolated compounds were compared with their nuclear magnetic resonance spectra and the literature led to identify one monoterpene glycoside (linalyl-β-glucopyranoside) (1) and three flavonoid glycosides: Apigenin-7-O-glucoside (2), astragalin (3) and (isorhamnetin-3-O-glucoside (4).Conclusion: This is the first report on the isolation and structure elucidation of compound (1) (linalyl-β-glucopyranoside) and compound (2) (apigenin-7-O-glucoside) from this species. In addition, antioxidant effect of the chloroform extract from S. rostratum was evaluated. The chloroform extract exhibited the remarkable radical scavenging ability (IC50=0066±0.001 mg/mL).

scholarly journals Cannabidiol Content and In Vitro Biological Activities of Commercial Cannabidiol Oils and Hemp Seed Oils

Medicines ◽  
2020 ◽  
Vol 7 (9) ◽  
pp. 57
Author(s):  
Masashi Kitamura ◽  
Yuka Kiba ◽  
Ryuichiro Suzuki ◽  
Natsumi Tomida ◽  
Akemi Uwaya ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
High Performance ◽  
Seed Oil ◽  
Cannabis Sativa ◽  
Biological Activities ◽  
Radical Scavenging ◽  
Seed Oils ◽  
Hemp Seed ◽  
Industrial Hemp

Background: Hemp (Cannabis sativa L.) seed contains high contents of various nutrients, including fatty acids and proteins. Cannabidiol (CBD) is a non-psychoactive compound that can be extracted from C. sativa and used for treating epilepsy and pain. Industrial hemp products, including CBD and hemp seed oils, have become increasingly popular. Some products are marketed without a clear distinction between CBD and hemp seed oils. Herein, the CBD content and biological activities of commercial CBD and hemp seed oils were examined. Methods: CBD content was measured by high-performance liquid chromatography. For in vitro antioxidant activity determination, 2,2-diphenyl-1-picrylhydrazyl and 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) radical-scavenging assays were performed. Results: The CBD concentrations in the two CBD oil samples were 18.9 ± 0.5 and 9.2 ± 0.4 mg/mL. Of the seven hemp seed oil samples, six samples contained CBD in concentrations ranging from 2.0 ± 0.1 to 20.5 ± 0.5 µg/mL, but it was not detected in one sample. Antioxidant activity was observed in both CBD oil samples. Conclusions: The results indicate that (1) CBD content varied by hemp seed oil sample and that (2) antioxidant activity could be a useful landmark for discriminating CBD oils from hemp seed oils.

Flavonoids in the Treatment of Alzheimer’s and Other Neurodegenerative Diseases

2018 ◽  
Vol 25 (27) ◽  
pp. 3228-3246 ◽  
Author(s):  
Cristina Airoldi ◽  
Barbara La Ferla ◽  
Giuseppe D`Orazio ◽  
Carlotta Ciaramelli ◽  
Alessandro Palmioli
Keyword(s):  
Neurodegenerative Diseases ◽  
Biological Activities ◽  
Chemical Properties ◽  
New Drugs ◽  
Terrestrial Plants ◽  
Positive Effects ◽  
Brain Functions ◽  
Age Related ◽  
Physico Chemical ◽  
Almost All

Flavonoids are phytochemicals present in almost all terrestrial plants and, as a consequence, in plant-based foods, and thus consumed by humans through diet. Recent evidences suggest that several flavonoids have positive effects against dementia and Alzheimer’s disease, reversing age-related declines in neurocognitive performances. In this review, we provide a general classification of natural and synthetic flavonoids, a description of their physico-chemical properties, in particular their redox properties and stability, and an extensive overview about their biological activities and structure-activity relationship in the field of neurodegenerative diseases. In addition, a section will be dedicated to the synthetic strategies for the preparation of bioactive derivatives. This information will be essential for the design and development of new drugs that can improve brain functions.

scholarly journals Antioxidant and Anti-cholinesterase Activity of Globularia meridionalis Extracts and Isolated Constituents

2012 ◽  
Vol 7 (8) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Rosa Tundis ◽  
Marco Bonesi ◽  
Federica Menichini ◽  
Monica R. Loizzo ◽  
Filomena Conforti ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Cholinesterase Activity ◽  
Hexane Fraction ◽  
Inhibition Assay ◽  
Total Extract ◽  
Methanol Fraction ◽  
Aerial Parts ◽  
Enzymes Inhibition ◽  
Β Carotene

The antioxidant and anti-cholinesterase properties of Globularia meridional (Podp.) O. Schwarz (Globulariaceae) were investigated. G. meridionalis aerial parts and roots were extracted with methanol, and the total extract successively partitioned with n-hexane. The methanol fraction of the roots showed the highest antioxidant activity with IC50 values of 8.0 and 2.1 μg/mL in the DPPH and β-carotene bleaching tests, respectively. From this fraction, three flavonoids, namely pectolinarigenin 7- O-β-glucoside, apigenin 7- O-β-glucoside and luteolin, and two phenylethanoids, namely acteoside and isoacteoside, were isolated. Potential anti-cholinesterase effects were assessed through the acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzymes inhibition assay. The n-hexane fraction of the roots exhibited the highest activity against both AChE and BChE with IC50 values of 65.5 and 70.4 μg/mL, respectively.

scholarly journals Phenolic Isomers from Plantago Catharinea Leaves: Isolation, Identification, Quantification and in Vitro Antioxidant Activity

2017 ◽  
Vol 12 (3) ◽  
pp. 1934578X1701200
Author(s):  
Leonardo Mendes De Souza Mesquita ◽  
Claudia Quintino Da Rocha ◽  
Luiz Henrique Lima Affonso ◽  
Antonietta Cerulli ◽  
Sonia Piacente ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
High Performance ◽  
Chemical Structure ◽  
Biological Activities ◽  
Bioactive Molecules ◽  
Good Source ◽  
Rare Sugar ◽  
Polyphenolic Acids ◽  
In Vitro Antioxidant Activity

In this study we isolated two polyphenolic acids of m/z 639, called catharinol A and catharinol B, from Plantago catharinea L. (Plantaginaceae) leaves. Although presenting very similar structures, catharinol A showed higher antioxidant activity when compared with gallic acid and quercetin standards. These compounds are position isomers and present in their chemical structure the rare sugar D-allose. Molecules with similar constitution are known to have important biological activities such as antitumor and immunosuppressive. These compounds were isolated by high-performance liquid chromatography (HPLC) and characterized by mass spectrometry (FIA-ESI-IT-MS/MS) and nuclear magnetic resonance (NMR). This work is the first study on the chemical composition of P. catharinea and encourages the production of Plantago species as a good source of bioactive molecules.

scholarly journals Free and Conjugated Phenolic Profiles and Antioxidant Activity in Quinoa Seeds and Their Relationship with Genotype and Environment

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1046
Author(s):  
Fabiana Antognoni ◽  
Giulia Potente ◽  
Stefania Biondi ◽  
Roberto Mandrioli ◽  
Lorenzo Marincich ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Environmental Conditions ◽  
High Performance ◽  
Biological Activities ◽  
Chenopodium Quinoa ◽  
Northern Italy ◽  
Temperate Climate ◽  
Total Phenolic ◽  
Array Detector

The nutraceutical interest in quinoa (Chenopodium quinoa Willd.) seeds is associated with the presence of macronutrients, micronutrients, minerals, vitamins, and polyphenols. In particular, polyphenols contribute to the health-promoting effects of this food crop, and their levels are influenced by environmental conditions. Production of quinoa is recently being explored in temperate climate areas, including Italy. The aim of this research was to assess the profile of bioactive compounds in seeds of two quinoa varieties, Regalona-Baer and Titicaca, grown in northern Italy, compared to that of seeds of those varieties grown in Chile and Denmark, respectively. High-performance liquid chromatography-diode array detector (HPLC-DAD) analysis of phenolic acid and flavonoid profiles, both in their free and soluble conjugated forms, showed that the main differences between Regalona grown in Chile and Italy were for the free vanillic acid and daidzein contents, while the two Titicaca samples mainly differed in quercetin derivative levels. The total phenolic index was comparable in Titicaca and Regalona, and only a slight decrease in this parameter was found in seeds of the two varieties grown in Italy. The in vitro antioxidant activity of seed extracts, evaluated by means of three different assays, indicated that it correlated with flavonol (quercetin derivative) levels. In conclusion, the results indicate that, although environmental conditions alter the polyphenolic profile and biological activities, it is possible to grow good-quality quinoa in northern Italy.

scholarly journals Chemical Constituents of Eremostachys macrophylla Montbr. & Auch. Aerial Parts

2020 ◽  
Vol 26 (2) ◽  
pp. 203-208
Author(s):  
Parina Asgharian ◽  
Abbas Delazar ◽  
Solmaz Asnaashari
Keyword(s):  
High Performance ◽  
Chemical Constituents ◽  
Folk Medicine ◽  
Reversed Phase ◽  
Spectroscopic Technique ◽  
Phytochemical Analysis ◽  
Aerial Parts ◽  
Soxhlet Apparatus ◽  
Snake Bites ◽  
Pure Compounds

Background: Eremostachys macrophylla Montbr. & Auch. is one of the wild growing species of herbs found in East Azerbaijan province of Iran. These species are used in folk medicine for the healing of wound, treatment of snake bites, rheumatism and joint pains. The primary aim of this study was to obtain natural pure compounds and this was done by subjecting the aerial parts of Eremostachys macrophylla Montbr. & Auch. to phytochemical analysis. Methods: The air-dried and crushed aerial parts were respectively extracted with n-hexane, dichloromethane (DCM) and methanol (MeOH) solvents using a soxhlet apparatus. The 10%, 20% and 40% of MeOH in water Sep-Pak fractions of the MeOH extract were subjected to a preparative reversed- phase high performance liquid chromatography (RP-HPLC). Also, the isolated pure compounds were identified by one-dimensional nuclear magnetic resonance (1D-NMR) spectroscopic technique. Results: The results obtained in this study showed the presence of seven pure components; (1) Lamalbide, (2) Sesamoside, (3) Phlomiol, (4) Verbascoside, (5) Luteolin-7-O- glucoside, (6) Apigenin-7-O- rutinoside and (7) Kaempferol-3-O- glucoside with iridoid, phenylethanoid and flavonoid structures. Conclusion: The results from the study demonstrated that the aerial parts of E. macrophylla could be a good source of iridoids, phenylethanoids and flavonoids.

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