Biological Activity Of Extracts Research Articles

Phytochemical Analysis and Evaluation of Antioxidant and Biological Activities of Extracts from Three Clauseneae Plants in Northern Thailand.

This study established the DNA barcoding sequences (matK and rbcL) of three plant species identified in the tribe Clauseneae, namely Clausena excavata, C. harmandiana and Murraya koenigii. The total phenolic and total flavonoid contents, together with the biological activities of the derived essential oils and methanol extracts, were also investigated. Herein, the success of obtaining sequences of these plant using two different barcode genes matK and rbcL were 62.5% and 100%, respectively. Both regions were discriminated by around 700 base pairs and these had resemblance with those of the Clausenae materials earlier deposited in Genbank at a 99–100% degree of identity. Additionally, the use of matK DNA sequences could positively confirm the identity as monophyletic. The highest total phenolic and total flavonoid content values (p < 0.05) were observed in the methanol extract of M. koenigii at 43.50 mg GAE/g extract and 66.13 mg QE/g extract, respectively. Furthermore, anethole was detected as the dominant compound in C. excavata (86.72%) and C. harmandiana (46.09%). Moreover, anethole (26.02%) and caryophyllene (21.15%) were identified as the major phytochemical compounds of M. koenigii. In terms of the biological properties, the M. koenigii methanol extract was found to display the greatest amount of antioxidant activity (DPPH; IC50 95.54 µg/mL, ABTS value 118.12 mg GAE/g extract, FRAP value 48.15 mg GAE/g extract), and also revealed the highest α-glucosidase and antihypertensive inhibitory activities with percent inhibition values of 84.55 and 84.95. Notably, no adverse effects on human peripheral blood mononuclear cells were observed with regard to all of the plant extracts. Furthermore, M. koenigii methanol extract exhibited promise against human lung cancer cells almost at 80% after 24 h and 90% over 48 h.

Biological Activities of Extracts from Leaf of Angelica gigas Nakai

Biological Activities of Extracts from Leaf of Angelica gigas Nakai

Toxic action of substances from male fern Dryopteris filix-mas (L.) Schott (1834) on free-living soil nematode Caenorhabditis elegans Maupas (1900)

The study of biological activity of extracts from roots and rhizomes of male fern Dryopteris filix-mas was carried out in experiments with soil nematode Caenorhabditis elegans. The toxicity of extracts of D. filix-mas roots and rhizomes obtained by different methods varied over a wide range. Crude extract of male fern roots and rhizomes in concentration range 62.5–250 µg/ml had a weak toxic action on C. elegans organism by inducing death of 26.0–43.3% nematodes. The toxicity of relatively high concentrations (500 and 250 µg/ml) of water-ethanolic extracts might be compared with such of crude extract in concentrations 62.5–250 µg/ml. Biological activity of filicinic acids ethers was found very high: concentrations of crude extract of D. filix-mas roots and rhizomes and concentrations of filicinic acids ethers with similar toxicity for C. elegans organism were 40-fold different. Substances isolated from D. filix-mas roots and rhizomes have nematicidal activity and may be used for development of drugs to treat helminthiasis of humans and animals.

Ocimum campechianum Mill. from Amazonian Ecuador: Chemical Composition and Biological Activities of Extracts and Their Main Constituents (Eugenol and Rosmarinic Acid)

The essential oil (EO), the methanolic (MeOH), and the 70% ethanolic (70% EtOH) extracts obtained from the aerial parts of Ocimum campechianum Mill. (Ecuador) were chemically characterized through gas-chromatography coupled to mass spectrometry detector (GC-MS), high-performance liquid chromatography coupled to diode array-mass spectrometry detectors (HPLC-DAD-MS) and studied for their in vitro biological activity. The radical scavenger activity, performed by spectrophotometric 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays, highlighted significant IC50 values for the EO, extracts and their main constituents (eugenol and rosmarinic acid). EO (and eugenol) showed noteworthy activity against Pseudomonas syringae pv. syringae and a moderate effect against clinical Candida strains, with possible synergism in association to fluconazole against the latter microorganisms. The extracts and pure molecules exhibited weak cytotoxic activity against the HaCat cell line and no mutagenicity against Salmonella typhimurium TA98 and TA100 strains, giving indication of safety. Instead, EO showed a weak activity against adenocarcinomic human alveolar basal epithelial cells (A549). The above-mentioned evidence leads us to suggest a potential use of the crude drug, extracts, and EO in cosmetic formulation and food supplements as antioxidant agents. In addition, EO may also have a possible application in plant protection and anti-Candida formulations.

Biological activities of extracts from Tongue fern (Pyrrosia lingua)

Biological activities of extracts from Tongue fern (<i>Pyrrosia lingua</i>)

Selective enrichment of ailanthone from leaves of ailanthus altissima by tandem reverse phase/molecularly imprinted solid phase extraction

The biological activity of extracts from Ailanthus altissima is mainly due to the presence of ailanthone, a compound belonging to the quassinoid class. Recently, attention has been paid to its strong cytostatic activity. However, the extraction of ailanthone is based on very long and demanding procedures, which keep the price of the commercial product very high. Thus, the development of selective adsorbents for the purification of ailanthone from A. altissima leaves extracts could help in reduce the costs of production. In this work, we describe the rational design of a molecularly imprinted polymer selective for ailanthone based on the screening of a 96-members not-imprinted polymeric library to rapidly identify pre-polymerization mixtures able to generate MIPs with enhanced binding properties. A 4-vinylpyridine-co-trimethylolpropane trimethacrylate polymer showed high binding towards ailanthone. It was used to prepare an imprinted polymer with acetonitrile showed interesting binding affinity (Keq = 18.3 × 103 L mol−1), high imprinting factor (IF = 3.8) and fast binding kinetics (kass = 0.390 min−1, kdis = 0.021 mol L−1 min−1). The imprinted polymer was used to develop a successful purification protocol of extracts from Ailanthus altissima leaves. The purification was based on the combination of a preliminary clean-up of Soxhlet extracts onto a reverse phase-C18 cartridge and the subsequent isolation of ailanthone by a molecularly imprinted solid phase extraction. This approach allowed efficiently purifying the ailanthone contained in aqueous or methanolic Soxhlet extracts with high yields compared to the quantities reported in literature (water: 0.756 ± 0.027 mg g−1; methanol: 0.770 ± 0.030 mg g−1). Moreover, it allows processing sample volumes up to 15 mL without significant losses of the target compound.

Antiparasitic activity of two Brazilian plants: Eugenia mattosii and Marlierea eugeniopsoides

Parasitoses are very common throughout the world, generating serious consequences for public health. Leishmaniosis and giardiasis are examples of fairly recurrent, but neglected diseases. Several higher plants have demonstrated promising activity against the parasites. The aim of this study was to evaluate the biological activity of extracts, fractions and isolated compounds from the leaves and stems of two Brazilian plants: Eugenia mattosii and Marlierea eugeniopsoides (Myrtaceae) against Leishmania and Giardia. XTT and the fluorimetric method were used to for this evaluation, respectively. Cytotoxicity was evaluated against HeLa cells. The results demonstrated that chloroform fractions of E. matosii and pinostrobin presented the most pronounced antiparasitic activity, with the CLF-stems being the most effective against Leishmania amazonensis and Leishmania braziliensis. Pinostrobin also presented activity against G. lamblia. Therefore, E. mattosii stems and pinostrobin may be considered possible targets for the continuity of studies against other parasites.

Chemical Composition and Biological Activities of Extracts from Pomelo Peel By-Products under Enzyme and Ultrasound-Assisted Extractions

Enzyme-assisted extraction (EAE) and ultrasound-assisted extraction (UAE) were popular methods used to extract bioactive compounds from citrus peels, by-products of fruit processing industry. In this study, the total phenolic content (TPC), total flavonoid content (TFC), naringin and hesperidin contents, and antioxidant and antimicrobial activities of the extracts from pomelo peels using the combined enzyme and ultrasound-assisted extraction (E-UAE) or ultrasound and enzyme-assisted extraction (U-EAE) technique were investigated and compared with those extracted using the EAE and UAE. The optimal EAE conditions were as follows: enzyme concentration of 2%, water-solid ratio of 40 ml/g, incubation temperature of 50°C, and extraction time of 60 min, whereas the optimal UAE conditions were ultrasonic energy of 40 kHz, water-solid ratio of 40 ml/g at room temperature, and extraction time of 60 min. The results indicate that the total phenolics, total flavonoids, naringin, and hesperidin contents of the extracts significantly increased in the following order of the extraction techniques: UAE &lt; EAE &lt; U-EAE &lt; E-UAE (p&lt;0.05). The combined E-UAE technique was the most effective technique for bioactive compound extraction with the highest antioxidant and antimicrobial activities. The results also indicate that chemical composition and antioxidant and antimicrobial activities of the extracts were different depending on the pomelo species.

Phytochemical Analysis, Multi-Element Composition and Biological Activities of Extracts and Lupenone from Albizia inundata (Mart.) Barneby &amp; J.W.Grimes

In this study, antimicrobial activity of extracts and lupenone from A. inundata (Fabaceae, Mimosoideae), were tested. In addition, the multi-element composition of the leaves, bark and stems (heartwood) of A. inundata was evaluated using inductively coupled plasma optical emission spectrometry (ICP OES). Lupenone was isolated in the petroleum ether extract of leaves, for the first time. Biological assays were conducted to evaluate the antimicrobial (antibacterial, antifungal and antiparasitic) of extracts, their fractions and lupenone. The results showed antimicrobial and antileishmanial activity of these compounds, which may be useful for obtaining a chemical composition and biological activity database on Albizia species. For multi-element composition, we found the mean concentrations (minimum-maximum) of Al, Ca, Cr, Cu, Fe, K, Mg, Mn, Ni, P, V and Zn in the samples ranged between 0.06 and 265.41 µg g-1. Concentration ranges of Cu, Fe, Mn and Zn are large, which makes these samples as additional sources of these macronutrients.

CHEMICAL COMPOSITION AND BIOLOGICAL ACTIVITY OF METABOLITES OF THE GENUS ALHAGI

In the review summarized the scientific literature on geographical distribution, the degree of knowledge of the chemical composition and biological activity of extracts and isolated individual compounds of the genus Alhagi Tourn. ex Adans. of the world flora. The structures of the isolated 300 compounds are presented belonging to the alkaloids, terpenoids, carbohydrates, hydrocarbons, lipids, and phenolic compounds. In quantitative terms, the phenolic compounds dominate, among which flavonoids belonging to the group flavone, flavonol, flavanone, isoflavone, isoflavonolignan and flavan-3-ols groups are prevails. Among them, to the chemotoxonomic markers can be include flavonols narcissin and its aglycone isorhamnetin, which are produced in major quantities in practically all species of the genus Alhagi. It was revealed that the qualitative composition of the metabolites of the same species of this genus depends on the ecological-geographical and soil-climatic conditions of their growth place. The data on the biological activity of extracts and isolated individual metabolites are considered. The main biologically active substances of the genus Alhagi are phenolic compounds. The presented information in the review shows that the plants of the genus Alhagi are promising for the creation of new pharmaceuticals. It was noted that in present time are being conducted in-depth preclinical pharmacological studies of the antioxidant preparation "Yantacin", the anti-inflammatory "Alkakhin", the biologically active complex "Alkhidin", and the antioxidant and antibacterial preparation "Zhantharid". Cited in the review information may be used as reference literature by phytochemists, biologists, and pharmacologists.

Total Phenolic and Flavonoid Content and Biological Activities of Extracts and Isolated Compounds of Cytisus villosus Pourr.

The aim of this study was to evaluate the total phenolic and flavonoid content, and the in vitro antioxidant, anti-inflammatory, antibacterial, antifungal, antimalarial, cytotoxicity, and antiprotozoal activities of the Algerian plant Cytisus villosus Pourr. (Syn. Cytisus triflorus L’Hérit.). Additionally, the radioligand displacement affinity on opioid and cannabinoid receptors was assessed for the extracts and isolated pure compounds. The hydro alcoholic extract of the aerial part of C. villosus was partitioned with chloroform (CHCl3), ethyl acetate (EtOAc), and n-butanol (n-BuOH). The phenolic content of the C. villosus extracts was evaluated using a modified Folin–Ciocalteau method. The total flavonoid content was measured spectrometrically using the aluminum chloride colorimetric assay. The known flavonoids genistein (1), chrysin (2), chrysin-7-O-β-d-glucopyranoside (3), and 2″-O-α-l-rhamnosylorientin (4) were isolated. The antioxidant activities of the extracts and isolated compounds were evaluated using 2,2-diphenyl-1-picrylhydrazyl (DDPH) and cellular antioxidant activity (CAA) assays. The plant extracts showed moderate antioxidant activity. EtOAc and n-BuOH extracts showed moderate anti-inflammatory activity through the inhibition of induced nitric oxide synthase (iNOS) with IC50 values of 48 and 90 µg/mL, respectively. The isolated pure compounds 1 and 3 showed good inhibition of Inducible nitric oxide synthase (iNOS) with IC50 values of 9 and 20 µg/mL, respectively. Compounds 1 and 2 exhibited lower inhibition of Nuclear Factor kappa-light-chain-enhancer of activated B cells (NF-κB) with IC50 values of 28 and 38 µg/mL, respectively. Furthermore, the extracts and isolated pure compounds have been shown to exhibit low affinity for cannabinoid and opioid receptors. Finally, n-BuOH extract was a potent inhibitor of Trypanosoma brucei with IC50 value of 7.99 µg/mL and IC90 value of 12.61 µg/mL. The extracts and isolated compounds showed no antimicrobial, antimalarial nor antileishmanial activities. No cytotoxic effect was observed on cancer cell lines. The results highlight this species as a promising source of anti-inflammatory and antitrypanosomal agents.

Antioxidant, iron chelating, lipase inhibition activities and metabolite’s prediction of hyrdoethanolic leaf extract of Conocarpus erectus

The current study was conducted to evaluate the antioxidant, Fe-chelating and lipase inhibition activities of hydroethanolic leaf extracts of Conocarpus erectus. The proton magnetic resonance spectroscopy (1H-NMR) was used to identify the major types of primary and secondary metabolites in extract. The 60% ethanolic extract was found to be the most effective fraction regarding antioxidant, Fe chelating and lipase inhibitory properties. The 60% ethanolic leaf extract exhibited total antioxidant power of 223.0±3.27 mg ASE/g PE, β-carotene bleaching inhibition of 81.39±2.11%, Fe-chelating of 68.21±1.17% and pancreatic lipase inhibition of 50.60±1.47%, respectively. The 1H-NMR -based prediction of metabolites provided the information for presence of polyphenolic secondary metabolites and organic acids which might be responsible for the biological activities of extract. These findings of this work may be extended for metabolite characterization, in vivo trials and toxicity determination to get benefits for functional food development with antioxidative and antiobesity attributes.

Anti-inflammatory, antinociceptive and antioxidant activities of the hydromethanolic fraction from Annona nutans leaves

Annona nutans (Annonaceae) is a plant species found in Bolivia, Paraguay, Argentina, and the Brazilian Cerrado, specifically in the states of Mato Grosso and Mato Grosso do Sul (Brazil). Its common names are Araticû-Mi and Araticû-Ñu. The research contributions regarding the chemical composition and biological activities of extracts from A. nutans are rare, with only four articles being found in the literature. Therefore, the present study evaluated the anti-inflammatory and antinociceptive activities of the hydromethanolic fraction (FHMeOH) using carrageenan-induced paw edema and hot-plate tests. In addition, the antioxidant activity was evaluated by DPPH radical scavenging, total phenolic, flavonoid and tannin content assays and quantification of the major metabolites by LC-MS were performed. Oral treatment with the FHMeOH (at a dose of 300 mg.kg-1) significantly reduced paw edema 2 h and 4 h after the inflammatory stimulus. The intraperitoneal (i.p.) treatment with the FHMeOH (50 and 100 mg.kg-1) proved to be most effective, and the inhibition of acute inflammation was still visible 6 h after carrageenan injection. At doses of 50 and 100 mg.kg-1 (i.p.), FHMeOH exhibits central antinociceptive effects by increasing the latency of the reaction in the hot-plate model. The FHMeOH showed antioxidant potential, and the metabolites quercetin-3-O-galactoside, quercetin-3-O-glucoside, isorhamnetin-3-O-galactoside, quercetin-3-O-β-D-apiofuranosyl-(1→2)-galactopyranoside, and chlorogenic acid were identified and quantified by LC-MS. Our results indicate, for the first time, that FHMeOH has anti-inflammatory, antinociceptive and antioxidant potential, and it is a promising source of studies for new herbal medicines

Medicinal Chemistry of Alternative Therapeutics: Novelty and Hopes with Genus Ammannia.

The plants have formed the basis of folklore remedy since the beginning of human civilization. The cumulative human endeavor and experience over a period of thousands of years developed into well to organize traditional medicine systems viz. Ayurvedic, Unani, Chinese amongst others. Across the world, traditional medicine is either the mainstay of health care or serves as a complement to modern drugs. In view of worldwide use of traditional medicines, World Health Organization launched 'WHO-Traditional Medicine Strategy 2014-2023' for the development of strong policies regarding knowledge-base, safety, quality-control and effectiveness of traditional/alternative therapeutics for national health systems. Besides their use in traditional medicine, plants have always been a good source of modern drug/pharmacologically active molecules. More than half of the modern pharmaceuticals are either plant isolates or their derivatives. The plant-based drugs are not only effective, but have better compatibility with human biological systems because of more biologically relevant chemistry, hence lesser side effects. Some of the species of genus Ammannia (Lythraceae) have been reported for their magical medicinal values. Many herbal formulations containing Ammannia spp. have been patented for treatment of serious diseases/disorders like cancer, spinal disease, human female infertility, chronic tonsillitis, pelvic inflammatory disease, treatment of bladder stones, urinary tract infections, dermatitis etc. The uses of Ammannia spp. in traditional medicine have been further verified by the biological activities of their extracts as well as isolation of bioactive phytomolecules. The current review provides details about Ammannia spp.; its use in folklore remedy, herbal formulations, biological activities of extracts, isolation of bioactive phytomolecules and SAR study of semi-synthetic derivatives to analyze the possibility of new drug molecules of plant origin.

Biological activities of extract from Coleonema album in vitro

Coleonema album is a South African shrub which is used as an anti-inflammatory. A methanolic leaf extract of C. album was here tested in vitro in various anti-inflammatory assays to establish a possible mode of action, as well as for cytotoxicity. The C. album extract did not change the signaling of anti-inflammatory activity in vitro. The extract inhibited COX-1, COX-2 and IL-6, but not ELAM or ICAM-1. Pellitorine, an alkamide isolated and identified from C. album, did not show any activity in the anti-inflammatory assays. The extract showed no cytotoxicity in normal and cancer cell lines. Finally, pellitorine was identified in C. album by UHPLC-QTOF-MS and its concentration was determined by an external standard method.

Subcritical Water for Recovery of Polyphenols from Comfrey Root and Biological Activities of Extracts

In the present study, subcritical water was used for extraction of bioactive compounds of Symphytum officinale root. Temperature (120-200 °C), extraction time (10-30 min) and HCl concentration in extraction solvent (0-1.5%) were investigated as independent variables in order to obtain the optimal conditions for extraction and to maximize the yield of total phenols, flavonoids and antioxidant activity of obtained extracts. The application of optimal conditions (200 °C, 25.6 min and 0.0075%) provided extracts rich in total phenols and flavonoids and high antioxidant activity. Results also demonstrated that subcritical water extraction showed significant advantages for recovery of comfrey root bioactive compounds comparing to maceration and ultrasound-assisted extraction techniques. In addition, subcritical water extracts of S. officinale root are the promising sources of compounds with antioxidant, ACE inhibition, and antiproliferative properties and could potentially be used for production of new pharmacologically-active formulations.

Biological activity of extracts from guayusa leaves (Ilex guayusa Loes.) obtained by supercritical CO2 and ethanol as cosolvent

To the best of our knowledge, this is the first study to investigate the biological activities and main constituents of extracts from guayusa leaves (Ilex guayusa Loes.) by using supercritical CO2 as solvent and ethanol as cosolvent at different conditions of pressure and temperature and comparing them with Soxhlet technique. The global yield (X0); total phenolic content (TPC), assessed by Folin–Ciocalteu reagent; in vitro antioxidant capacity, by both ABTS•+ and DPPH methods; antimicrobial activity; and the main phytochemicals, based on gas chromatography-mass spectrometry, of the extracts were tested. X0, TPC, and antioxidant capacity were dependent on technique or solvent used and increased when ethanol was used as cosolvent. Antifungal activity was demonstrated against T. rubrum, T. mentagrophytes, M. gypseum and M. canis. The main phytochemicals were caffeine, squalene and α-amyrin. Therefore, known for its caffeine content, guayusa extracts obtained by supercritical fluid extraction showed important nutraceutical ingredients.

Metabolite Profiles and Biological Activity of Extracts from Alternaria sonchi S-102 Culture Grown by Different Fermentation Methods

Five compounds, 4-chloropinselin, chloromonilinic acids B and C, alternariol, and emodin, are the first to be identified in the metabolite composition of Alternaria sonchi, a pathogen of field sowthistle (Sonchus arvensis L.). The metabolite profiles of extracts have been significantly influenced by fermentation and extraction techniques. Solid-state fermentation of A. sonchi S-102 on millet was preferable for the production of alternethanoxin A, chloromonilicin, and 4-chloropinselin with a yield of about 460, 70, and 2760 mg/kg respectively, while the use of pearl barley was optimal for the production of alternethanoxin B (215 mg/kg) and alternethanoxin D (29 mg/kg). Extracts from the culture broth and mycelium of A. sonchi obtained after surface cultivation of the fungus contained 4-chloropinselin, alternariol, emodin, and a number of unidentified biologically active compounds. The extracts display relatively low phytotoxic and antimicrobial activity and only trace levels of alternariol. Thus, there is low toxicological risk for the application of this fungus as a bioherbicide producer.

Биологическая активность полисахаридсодержащих экстрактов, выделенных из плодов боярышника обыкновенного разной степени зрелости

Биологическая активность полисахаридсодержащих экстрактов, выделенных из плодов боярышника обыкновенного разной степени зрелости

Biological activities of extracts and metabolites isolated from Anvillea radiata Coss. & Dur. (Asteraceae)

The antioxidant, anticholinesterase, anti-tyrosinase, anti-α-glucosidase, cytotoxic, antifungal and antibacterial activities of Ethyl acetate (EtOAc) and n-butanol (n-BuOH) extracts and three compounds isolated from Anvillea radiata (Asteracea); two epimer germacranolides 9α-hydroxyparthenolide(1), 9β-hydroxyparthenolide(2) and a phenolic acid; 3,5-O-dicaffeoylquinic acid (3), were evaluated.The antioxidant activity was assessed using two methods (DPPH and ABTS). In the DPPH and ABTS methods, EtOAc extract exhibited the strongest radical scavenging activity with an IC50 value of 0.0026 mg/mL and 0.0011 mg/mL, respectively. This extract and the two germacranolides (1) and (2) exhibited considerable anticholinesterase and anti-tyrosinase activities, 9α-hydroxyparthenolide(1) exhibited the highest effect with values of IC50 = 0.025 mg/mL and % of inhibition = 79.55%, respectively. Compound 3 displayed the highest α-glucosidase inhibitory activity with IC50 = 0.09 mg/mL. The antibacterial effect of the isolated compounds and the studied extracts was rated limited. The two compounds 1 and 2 exhibited a high cytotoxic activity against MCF-7 cancer cell lines with growth inhibition of 98.12% and 78.50%, respectively at 50 μM but showed a moderate cytotoxic effect towards OVCAR-3 cell lines. These results suggest that A.radiata has several biological activities and could provide a potential natural source of bioactive compounds and be beneficial to the human health and as source of natural antioxidants in food industry.