scholarly journals Exploring the Chemical Profiles and Biological Values of Two Spondias Species (S. dulcis and S. mombin): Valuable Sources of Bioactive Natural Products

Antioxidants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1771
Author(s):  
Kouadio Ibrahime Sinan ◽  
Gokhan Zengin ◽  
Dimitrina Zheleva-Dimitrova ◽  
Reneta Gevrenova ◽  
Marie Carene Nancy Picot-Allain ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
High Performance ◽  
High Resolution Mass Spectrometry ◽  
Antioxidant Properties ◽  
Soxhlet Extraction ◽  
Stem Bark ◽  
Extraction Methods ◽  
Bioactive Natural Products ◽  
Methanolic Extracts ◽  
Chemical Profiles

Spondias species have been used in traditional medicine for different human ailments. In this study, the effect of different solvents (ethyl acetate, methanol, and water) and extraction methods (infusion, maceration, and Soxhlet extraction) on the enzyme inhibitory activity against acetylcholinesterase, butyrylcholinesterase, tyrosinase, α-amylase, α-glucosidase, and antioxidant properties of S. mombin and S. dulcis leaves and stem bark were evaluated. Ultra-high-performance liquid chromatography–high resolution mass spectrometry (UHPLC-HRMS) yield in the identification and/or annotation of 98 compounds showing that the main secondary metabolites of the plant are gallic and ellagic acids and their derivatives, ellagitannins, hydroxybenzoic, hydroxycinnamic, acylquinic acids and flavonols, flavanones, and flavanonols. The leaves infusion of both Spondias species showed highest inhibition against acetylcholinesterase (AChE) (10.10 and 10.45 mg galantamine equivalent (GALAE)/g, for S. dulcis and S. mombin, respectively). The ethyl acetate extracts of the stem bark of S. mombin and S. dulcis actively inhibited α-glucosidase. Methanolic extracts of the leaves and stem bark exhibited highest tyrosinase inhibitory action. Antioxidant activity and higher levels of phenolics were observed for the methanolic extracts of Spondias. The results suggested that the Spondias species could be considered as natural phyto-therapeutic agents in medicinal and cosmeceutical applications.

scholarly journals Isoflavonoid Profiling and Estrogen-Like Activity of Four Genista Species from the Greek Flora

Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5507
Author(s):  
Antigoni Cheilari ◽  
Argyro Vontzalidou ◽  
Maria Makropoulou ◽  
Aggeliki K. Meligova ◽  
Nikolas Fokialakis ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
High Performance ◽  
High Resolution Mass Spectrometry ◽  
Ongoing Research ◽  
Methanolic Extracts ◽  
Aerial Parts ◽  
Vaginal Estrogen ◽  
Ishikawa Cells ◽  
Phytochemical Profile ◽  
Phytochemical Profiles

As part of our ongoing research on phytoestrogens, we investigated the phytochemical profile and estrogen-like activities of eight extracts from the aerial parts of four Genista species of Greek flora using estrogen-responsive cell lines. Ethyl acetate and methanolic extracts of G. acanthoclada, G. depressa,G. hassertiana, and G. millii were obtained with accelerated solvent extraction and their phytochemical profiles were compared using ultra-high-performance liquid chromatography-high-resolution mass spectrometry (uHPLC-HRMS). Fourteen isoflavonoids, previously isolated from G. halacsyi, were used as reference standards for their identification in the extracts. Thirteen isoflavonoids were detected in both extracts of G. acanthoclada and G. hassertiana, while fewer and far fewer were detected in G. millii and G. depressa, respectively. The ethyl acetate extracts of G. hassertiana and G. acanthoclada displayed 2.45- and 1.79-fold higher, respectively, estrogen-like agonist activity in Ishikawa cells compared to MCF-7 cells at pharmacologically relevant concentrations. Both these extracts, but not that of G. depressa, contained mono- and di-O-β-d-glucosides of genistein as well as the aglycone, all three of which are known to display full estrogen-like activity at lower-than-micromolar concentrations. The possibility of using preparations rich in G. hassertiana and/or G. acanthoclada extracts as a potentially safer substitute for low-dose vaginal estrogen for menopausal symptoms is discussed.

scholarly journals In vitro Antidiabetic, anti-obesity and antioxidant proprities of Rosemary extracts

2014 ◽  
Vol 10 (2) ◽  
pp. 2305-2316 ◽  
Author(s):  
Manel Ben Ali ◽  
Kais Mnafgui ◽  
Abdelfattah Feki ◽  
Mohamed Damak ◽  
Noureddine Allouche
Keyword(s):  
Essential Oil ◽  
Ethyl Acetate ◽  
Pancreatic Lipase ◽  
Antioxidant Properties ◽  
Methanolic Extracts ◽  
Ic50 Values ◽  
Inhibitory Potential ◽  
Prevention Of Diabetes ◽  
First Time

Diabetes mellitus is a serious health problem worldwide that has adverse and long-lasting consequences for individuals, families, and communities. Hence, this study sought to investigate the inhibitory potential of rosemary extracts on key-enzymes related to diabetes such as α-amylase and pancreatic lipase activities, as well as to assess their antioxidant properties in vitro. The IC50 values of Rosemary essential oil, ethyl acetate and methanolic extracts against α-amylase were 28.36, 34.11 and 30.39 µg/mL respectively, and those against pancreatic lipase were 32.25, 36.64 and 34.07 µg/mL, suggesting strong anti-diabetic and anti-obesity effects of Rosemary. The methanolic extract was found to be the highest in levels of phenolic (282.98 µgGAE/mg extract) and flavonoids (161.05 µg QE /mg extract) contents as well as in the antioxidant activity (IC50 = 15.82 µg/mL) as compared to other extracts ethyl acetate (IC50 = 32.23 µg/mL) and essential oil  (IC50 = 96.12 µg/mL).Antioxidant efficacy of Rosemary extracts has been estimated in the stabilization of sunflower oil (SFO) at three different concentrations, i.e. 200 (SFO-200), 500 (SFO-500) and 1000 ppm (SFO-1000). Results showed the highest efficiency of SFO-1000.The results obtained in this study demonstrated for the first time that Rosemary is a potent source of natural inhibitors of α-amylase and pancreatic lipase with powerful antioxidants proprieties that might be used in the food stabilization and the prevention of diabetes and obesity complications as a complementary pharmacological drug.

scholarly journals Phytochemical analysis, anti-oxidant and anti-microbial activity of Acalypha indica leaf extracts in different organic solvents

2016 ◽  
Vol 8 (3) ◽  
pp. 444 ◽  
Author(s):  
Chekuri Sudhakar ◽  
Narendar Vankudothu ◽  
Shivaprasad Panjala ◽  
Nirmala Babu Rao ◽  
Roja Rani Anupalli
Keyword(s):  
Ethyl Acetate ◽  
Petroleum Ether ◽  
Microbial Activity ◽  
Leaf Extract ◽  
Antioxidant Properties ◽  
Soxhlet Extraction ◽  
Phytochemical Analysis ◽  
Leaf Extracts ◽  
Anti Oxidant ◽  
Acalypha Indica

The herb <em>Acalypha indica </em>which belongs to Euphorbiaceae family has multiple medicinal properties which include anti-oxidant, anti-bacterial, anti-fungal, anti-inflammatory, antiulcer, anti-helmintic, anti-cancerous, anti-venom, and neuro-protective activity. The present study was designed to evaluate the phytochemical, antimicrobial and anti-oxidant activity of <em>Acalypha indica </em>leaves extracts in different solvent extractions like methanol, hexane, ethyl acetate and petroleum ether. Fresh leaves of the plant were collected and shade dried. Dried leaves were milled to obtain powder. Powder was subjected to soxhlet extraction using solvents and extracts were successively obtained. Phytochemical analysis was conducted following standard methods.  Phytochemical analysis showed the presence of Alkaloids, Phenols, Saponins, Flavanoids and Amino acids. Leaf extract of methonal have shown the highest anti-oxidation capacity than hexane, ethyl acetate and petroleum ether. Anti-microbial activity has been performed on microbes like <em>Bacillus sps</em>, <em>E.coli,</em> <em>Psuedomonas sps</em> and <em>Streptococcus sps.</em> A highest value of zone of inhibition was found in methanol extract against <em>E.coli.</em> These results provide evidence that <em>Acalypha indica </em>leaf extract possesses vital phytochemicals, antimicrobial and antioxidant properties. Hence this plant can be studied further for drug analysis for finding potent medicines for diseases.

scholarly journals Evaluation and Optimization of Downstream Process Parameters for Extraction of Betulinic Acid from the Bark ofZiziphus jujubaeL.

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Kashyap Kumar Dubey ◽  
Nitika Goel
Keyword(s):  
Process Parameters ◽  
Betulinic Acid ◽  
High Performance ◽  
Soxhlet Extraction ◽  
Extraction Methods ◽  
Optimum Parameters ◽  
Assisted Extraction ◽  
Recovery Percentage ◽  
Percentage Extraction ◽  
Rsm Model

Present work investigated an apposite and efficient method for extraction of betulinic acid (BA) from the bark ofZiziphus jujubae. Various extraction methods like stirring extraction, soxhlet extraction, ultrasonic extraction, and microwave assisted extraction (MAE) were evaluated for increasing recovery percentage of BA. From the raffinate so obtained, BA was isolated. Thin layer chromatography (TLC) was used to analyze the extract and high performance liquid chromatography (HPLC) for quantification. The results revealed that the percentage extraction of BA fromZ. jujubaeby MAE was more proficient. As recovery percentage of BA by MAE technique turned out to be maximum, by using response surface methodology (RSM), three process parameters (pH, temperature, and time) were optimized by MAE and it was observed that the optimum parameters (pH 6.5, temp. 70.23°C, and time 3.5 min) gave the maximum recovery of BA (0.44% w/w). To validate the RSM model, experiments were performed and the highest recovery of BA was found to be 0.4% w/w which is ±0.04% to the predicted value. Henceforth the extraction efficiency and the substantial saving of time by MAE was more capable than the other extraction techniques.

scholarly journals Antioxidants properties of Murraya koenigii: a comparative study of three different extraction methods

Food Research ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 43-49
Author(s):  
M.T. Parithy ◽  
Mohd Zin Z. ◽  
Hasmadi M. ◽  
N.D. Rusli ◽  
K.L. Smedley ◽  
...  
Keyword(s):  
Total Phenolic Content ◽  
High Performance ◽  
Phenolic Content ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Thiobarbituric Acid ◽  
Extraction Methods ◽  
Total Phenolic ◽  
Assisted Extraction ◽  
Pharmaceutical Industries

Nutraceutical and pharmaceutical industries have been increasingly engaged in finding natural alternatives compounds as potential antioxidants. The use of phytochemicals is introduced as a good source of natural antioxidants. Murayya koenigii leaves, commonly used in cooking and traditional medicines have been examined for their remarkable antioxidant potential, yet still, it remains an understudied herb. Therefore, this study aimed to determine the antioxidant properties and flavonoids profile in M. koenigii leaves extracted using; solvent assisted extraction (SAE), microwave assisted extraction (MAE) and ultrasonic assisted extraction (UAE). The antioxidant properties of M. koenigii were analysed qualitatively and quantitatively using high performance liquid chromatography (HPLC). M. koenigii leaves extracted using the UAE method have responded strongly towards a 2, 2-diphenyl -2-picryl-hydrazyl DPPH assay with the highest inhibition (%) of 78.00±1.00. Using the ferric thiocyanate (FTC) and thiobarbituric acid (TBA) method assays, the M. koenigii leaves with the lowest absorbance were assigned as a sample with the highest antioxidant activity. The M. koenigii leaves extracted using UAE had the lowest absorbance with 0.01±0.00. In the TPC assay, the MAE method showed the highest total phenolic content (120.60±14.81 mg GAE/g sample). The TFC assay demonstrated that MAE methods have the highest total phenolic content (93.38±4.33 mg QE/g sample. The M. koenigii leaves extracted by MAE showed the highest gallic acid, catechin, epigallocatechin gallate, rutin and kaempferol concentration (mg/L). M. koenigii leaves subjected to SAE extraction has the highest concentration of p-coumaric acid, myricetin and quercetin (mg/L). This study found that M. koenigii leaves extracted using UAE exhibited better antioxidant activities than that of MAE and SAE. These useful findings have managed to narrow the knowledge gap regarding the effects of different extraction methods on the antioxidant property of M. koenigii.

scholarly journals ARGINASE INHIBITORY ACTIVITY OF STEM BARK EXTRACTS OF CAESALPINIA TORTUOSA ROXB

2018 ◽  
Vol 10 (1) ◽  
pp. 130
Author(s):  
Amirah Najid ◽  
Berna Elya ◽  
Arikadia Noviani
Keyword(s):  
Ethyl Acetate ◽  
Inhibitory Activity ◽  
Phenolic Content ◽  
Colorimetric Method ◽  
Stem Bark ◽  
Phytochemical Analysis ◽  
Standard Drug ◽  
Methanol Extracts ◽  
Methanolic Extracts ◽  
Ic50 Values

Objective: This study aimed to evaluate the arginase inhibitory activity of Caesalpinia tortuosa Roxb. stem bark extracts.Methods: C. tortuosa Roxb. stem bark extracts were obtained through reflux extraction using n-hexane, ethyl acetate, and methanol and theirinhibitory activity against arginase was measured using a microplate reader at 430 nm. Active extracts were subjected to phytochemical analysisand based on the qualitative phytochemical analysis, quantitative data regarding flavonoid and phenolic contents were obtained. The total flavonoidcontent of active extracts was determined using AlCl3 colorimetric method, and the phenolic content was determined using Folin–Ciocalteu method.Results: Ethyl acetate and methanol extracts of C. tortuosa Roxb. inhibited activity of arginase with IC50 values of 33.81 and 11.58 μg/mL,respectively, nor-NOHA acetate as standard drug inhibited arginase with IC50 values of I3.77 μg/mL. Both active extracts contained saponins,tannins, and flavonoids. Ethyl acetate and methanol extracts showed a total flavonoid content of 7.41 mgQE/g and 5.05 mgQE/g and totalphenolic content of 27.55 mgGE/g and 17.16 mgGE/g, respectively. Methanol extracts had a higher inhibitory activity than ethyl acetateextracts despite having flavonoid and phenolic content, thereby suggesting no correlation between arginase inhibitory activity and flavonoidor phenolic content.Conclusion: Ethyl acetate and methanolic extracts of C. tortuosa Roxb. stem barks containing flavonoids, tannins, and saponins displayed arginaseinhibitory activity, and no correlation was observed between arginase inhibitory activity and flavonoid and phenolic content.

scholarly journals Comparative Studies of Fraxinus Species from Korea Using Microscopic Characterization, Phytochemical Analysis, and Anti-Lipase Enzyme Activity

Plants ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 534
Author(s):  
Kazi-Marjahan Akter ◽  
Woo Sung Park ◽  
Hye-Jin Kim ◽  
Atif Ali Khan Khalil ◽  
Mi-Jeong Ahn
Keyword(s):  
Lipase Activity ◽  
High Performance ◽  
Folk Medicine ◽  
Lower Surface ◽  
Stem Bark ◽  
Phytochemical Analysis ◽  
Orthogonal Projections ◽  
Cork Cell ◽  
Microscopic Evaluation ◽  
Chemical Profiles

Fraxinus species belongs to the Oleaceae family, commonly known as Ash tree, and has been utilized as a folk medicine with various medicinal properties, including anti-obesity activity. The goal of the present study was to establish quality control parameters using microscopic characterization, phytochemical differentiation, and anti-lipase activity evaluation of five Fraxinus plants in Korea. Microscopic evaluation of the lower surface, petiole, and midrib of leaves, and stem bark showed discriminative anatomical characteristics, such as the stomatal index of the lower leaf surface; the number of sclerenchyma cells, and the diameter of parenchyma cells in the petiole and midrib; and the cork cell size and fiber frequency in the stem bark. Phytochemical analysis using high-performance liquid chromatography revealed the significant variation in the chemical profiles of the 12 major secondary metabolites among the samples. The orthogonal projections to latent structure-discrimination analysis efficiently differentiated each group belonging to each Fraxinus plant with the anatomical and quantification data. F. rhynchophylla and ligstroside showed the most potent anti-lipase activity among the plants and the 12 major metabolites, respectively. These findings could serve as the scientific criteria for the appropriate identification and establishment of standards for the use of Fraxinus species as medicinal plants.

scholarly journals Antimicrobial Activity of Extracts from the Humiria balsamifera (Aubl)

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1479
Author(s):  
Edelson de J. S. Dias ◽  
Antônio J. Cantanhede Filho ◽  
Fernando J. C. Carneiro ◽  
Cláudia Q. da Rocha ◽  
Luís Cláudio N. da Silva ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Ethyl Acetate ◽  
High Performance ◽  
Stem Bark ◽  
Bacterial Strains ◽  
Leaf Extracts ◽  
Polarity Index ◽  
New Treatments

Humiria balsamifera (Aubl), commonly known as “mirim”, is a plant of the Humiriaceae family, which consists of 39 species divided between eight genera: Duckesia, Endopleura, Humiria, Humiriastrum, Hylocara, Sacoglottis, Schistostemon, and Vantenea. This study aimed to characterize H. balsamifera extracts by LC-MS/MS and evaluate their antimicrobial potential through in vitro and in vivo assays. The leaves and stem bark of H. balsamifera were collected and dried at room temperature and then ground in a knife mill. The extracts were prepared with organic solvents in order to increase the polarity index (hexane, ethyl acetate, and methanol). The antimicrobial effects of these extracts were evaluated against the following bacterial strains: Escherichia coli ATCC 25922, Listeria monocytogenes ATCC 15313, Salmonella enterica Typhimurium ATCC 14028, and Staphylococcus aureus ATCC 6538. The best activity was observed in the ethyl acetate (EALE = 780 µg/mL), methanol (MLE = 780 µg/mL), and hexane (HLE = 1560 µg/mL) leaf extracts against S. aureus. Considering the results for both antimicrobial and antibiofilm activities, the EALE extract was chosen to proceed to the infection assays, which used Tenebrio molitor larvae. The EALE treatment was able to extend the average lifespan of the larvae (6.5 days) in comparison to S. aureus-infected larvae (1 day). Next, the samples were characterized by High-Performance Liquid Chromatography coupled to a mass spectrometer, allowing the identification of 11 substances, including seven flavonoids, substances whose antimicrobial activity is already well-reported in the literature. The number of bioactive compounds found in the chemical composition of H. balsamifera emphasizes its significance in both traditional medicine and scientific research that studies new treatments based on substances from the Brazilian flora.

scholarly journals Purification Process of Mangiferin from Mangifera indica L. Leaves and Evaluation of Its Bioactivities

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 852
Author(s):  
Nguyen Thi Truc Loan ◽  
Dang Thanh Long ◽  
Pham Nguyen Dong Yen ◽  
Truong Thi Minh Hanh ◽  
Tri Nhut Pham ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Crude Extract ◽  
Mangifera Indica ◽  
Antioxidant Properties ◽  
Ethanolic Extract ◽  
Antibacterial Activities ◽  
Extraction Methods ◽  
Salmonella Spp ◽  
Local Variety ◽  
Extraction And Purification

Mangiferin (C19H18O11) is a C-glucoside xanthone that is mainly found in the leaves of mango (Mangifera indica L). The compound has been recognized for several pharmacological values, including antioxidant and antibacterial activities. Therefore, the present study aims to utilize the old leaves of mango as a potential source for mangiferin extraction and purification, and evaluate its antimicrobial and antioxidant properties. In the present study, mangiferin was extracted from a local variety of mango leaves using ultrasonic-assisted extraction methods and ethanol as the extraction solvent. The crude ethanolic extract of mangiferin was then purified by the liquid–liquid fractionation method with dichloromethane and ethyl acetate, then further separated by HPLC. The crude extract, ethyl acetate fractions and purified mangiferin were investigated for anti-microorganism activity against Escherichia coli, Salmonella spp. and Aspergillus flavus by using the paper disc diffusion assay. The results have shown that the extraction efficiency was 14.17%. The obtained mangiferin was 1.97 g of content and 94.2% of purity. The oxidation resistance of purified mangiferin was 1.77 times higher than the crude extract and 1.05 times higher than the standard mangiferin (IC50 = 13.841 μg/mL). However, the purified mangiferin has shown no inhibitory action against the experimental strains of microorganisms. The findings from the present study suggest an effective scheme of extraction and purification to obtain mangiferin from the local variety of mango with high purity and antioxidant potential.

scholarly journals Occurrence and characterisation of naphthenic acid fraction components in oil residues stranded on the shoreline of Chedabucto Bay, Nova Scotia, Canada

2021 ◽  
Author(s):  
Zeyu Yang ◽  
Gong Zhang ◽  
Chun Yang ◽  
Keval Shah ◽  
Bruce Hollebone ◽  
...  
Keyword(s):  
Nova Scotia ◽  
High Performance ◽  
High Resolution Mass Spectrometry ◽  
Naphthenic Acid ◽  
Soxhlet Extraction ◽  
Abundant Species ◽  
Degree Of Saturation ◽  
Acid Fraction ◽  
Sediment Samples ◽  
Oil Components

Abstract Purpose This study aimed to investigate the occurrence, fate, and behaviour of oil components 46 years post-spill by analysing polar naphthenic acid fraction components (NAFCs). Methods Oil residues and sediment samples were collected from the shoreline of Chedabucto Bay, Nova Scotia, Canada, at sites affected by the 1970 Arrow oil spill, in June 2016. Sediments were extracted with Soxhlet extraction; NAFCs were separated through a silica gel column firstly, then analysed by high-performance liquid chromatography–high-resolution mass spectrometry (HPLC-HRMS). Results and discussion In all samples, the most abundant NAFC species were those having only oxygen as the heteroatom (Oo species, o indicating the number of oxygen atoms, from 1 to 8) and a high degree of saturation. O2 species accounted for 50–70% of all Oo species. NAFCs with sulphur heteroatoms were the second abundant species, then by those containing both nitrogen and oxygen heteroatoms. NAFCs in most Arrow oil residues had higher levels of oxygen species, especially for heavier molecular weight congeners, than the oil remaining stored in the sunken tanker. Environmental sediment samples, collected from near a marina away from the spill site, mainly contained a biological contribution with obviously recent petroleum oil input, whereas all Arrow oil residues were composed mainly of NAFCs that are characteristic of petroleum, and varied abundance between sites. Conclusions Characteristics of NAFCs from different sources varied from each other. Site-specific environmental conditions played a major role in controlling the fate and behaviour of oil components, including NAFCs.

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