scholarly journals Chemistry and Pharmacology of the Kazakh Crataegus Almaatensis Pojark: An Asian Herbal Medicine

Antioxidants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 300 ◽  
Author(s):  
Sabrina S. Soares ◽  
Elmira Bekbolatova ◽  
Maria Dulce Cotrim ◽  
Zuriyadda Sakipova ◽  
Liliya Ibragimova ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Crude Extract ◽  
High Speed ◽  
Vascular Reactivity ◽  
Ethanol Extract ◽  
Relaxation Effect ◽  
Total Leukocyte Count ◽  
Popular Medicine ◽  
Internal Mammary ◽  
Optimized Conditions

Crataegus almaatensis, an endemic ornamental plant in Kazakhstan is used in popular medicine due to its cardiotonic properties. The most studied species of the same genus are commonly found in Europe, which shows the importance of having the Kazakh species validated via its chemical and pharmacological studies. High-speed countercurrent chromatography (HSCCC) operated under optimized conditions enabled an isolation of the three main compounds from the aqueous phase of the leaves ethanol extract, further identified by nuclear magnetic resonance (NMR), as quercetin 3-O-rhamnoside (quercitrin) (4.02% of the crude extract-CECa); quercetin 3-O-β-galactoside (hyperoside) (1.82% of CECa); kaempferol 3-O-α-L-rhamnoside (afzelin) (0.94% of CECa). The CECa, the aqueous phase of the crude extract (APCa) together with the isolates were evaluated for their vascular (vascular reactivity in human internal mammary artery-HIMA), anti-nociceptive (formalin-induced liking response and hot plate) and anti-inflammatory (subcutaneous air-pouch model-SAP) activities. CECa at the concentrations of 0.014 and 0.14 mg/mL significantly increased the maximum contractility response of HIMA to noradrenaline. The APCa CR curve (0.007–0.7 mg/mL) showed an intrinsic relaxation effect of the HIMA. APCa at the dose of 100 mg/kg i.p. significantly decreased the total leukocyte count and the IL-1β release in the SAP wash.

HSCCC Separation of Three Main Compounds from the Crude Extract of Dracocephalum Tanguticum by Using Dimethyl Sulfoxide as Cosolvent

2020 ◽  
Author(s):  
Xue Yang ◽  
Yongling Liu ◽  
Tao Chen ◽  
Nana Wang ◽  
Hongmei Li ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
Dimethyl Sulfoxide ◽  
Efficient Method ◽  
Crude Extract ◽  
High Speed ◽  
Glacial Acetic Acid ◽  
Butyl Alcohol ◽  
Preparative Hplc ◽  
Counter Current

Abstract Separation of natural compounds directly from the crude extract is a challenging work for traditional column chromatography. In the present study, an efficient method for separation of three main compounds from the crude extract of Dracocephalum tanguticum has been successfully established by high-speed counter-current chromatography (HSCCC). The crude extract was directly introduced into HSCCC by using dimethyl sulfoxide as cosolvent. Ethyl acetate/n-butyl alcohol/0.3% glacial acetic acid (4: 1: 5, v/v) system was used and three target compounds with purity higher than 80% were obtained. Preparative HPLC was used for further purification and three target compounds with purity higher than 98% were obtained. The compounds were identified as chlorogenic acid, pedaliin and pedaliin-6″-acetate.

scholarly journals Studying the Optimum Conditions of ‎Hygromycin B Production and Detect their ‎Toxicity

2017 ◽  
Vol 26 (2) ◽  
pp. 119-130
Author(s):  
Zahraa Abdulmunim ‎ ◽  
Rabah N. Jabba ◽  
Abdulwahid B. Al-Shaibani
Keyword(s):  
Antimicrobial Activity ◽  
Aqueous Phase ◽  
Crude Extract ◽  
Incubation Temperature ◽  
Salmonella Typhi ◽  
Broth Culture ◽  
Hygromycin B ◽  
Yeast Saccharomyces Cerevisiae ◽  
Diffusion Technique ◽  
Mice Liver

Hygromycin B was extracted with ethyl acetate, which separates organic phase from aqueous phase in the broth culture filtrate, only the aqueous phase showed significant antimicrobial activity by using agar well diffusion technique. At a concentration of 25mg/ml (as crude extract), this phase excreted its activity against the test microorganisms which include; one G(+) bacteria (Staphylococcus aureus), five G(–) bacteria (Pseudomonas aeruginosa , Proteus mirabilis, Escherichia coli , Klebsiella pneumoniae, Salmonella typhi) and one yeast (Saccharomyces  cerevisiae).          After detecting the aminoglycoside hygromycin B by the Thin Layer Chromatography (TLC) method to ensure presence of the antibiotic, same flow rate (Rf) value (0.357) as that of the standard hygromycin B was obtained.          Results of the optimization conditions showed that the highest antimicrobial activity of hygromycin B was obtained at a medium pH of 8 and incubation temperature of 35°C for 10 days. When the toxicity of hygromycin B crude extract under such conditions was examined on mice liver, a mild effects were appeared

scholarly journals Immunostimulatory properties of bigroot geranium (Geranium macrorrhizum L.) extract

Medicina ◽  
2007 ◽  
Vol 43 (1) ◽  
pp. 60 ◽  
Author(s):  
Vilma Jurkštienė ◽  
Anatolijus Kondrotas ◽  
Egidijus Kėvelaitis
Keyword(s):  
T Lymphocytes ◽  
B Lymphocytes ◽  
Peripheral Blood ◽  
Leukocyte Count ◽  
Ethanol Extract ◽  
Food Supplement ◽  
Total Leukocyte Count ◽  
Control Group ◽  
Case Group ◽  
Cell Counts

The aim of the study was to investigate the immunostimulatory properties of bigroot geranium. Material and methods. Possible nonspecific characteristics of bigroot geranium were evaluated by the total leukocyte count in the peripheral blood, and qualitative changes of blood were assessed using Shilling’s formula by evaluating changes in lymphocyte counts. In addition, we also studied changes in the counts of Tcell precursors in the thymus and B lymphocytes in the spleen. Ethanol extract of the leaves of bigroot geranium was produced at the Department of Food Technology, Kaunas University of Technology. Studies were performed on mice Bl 57 (n=21). The control group (n=7) received distilled water at a dose of 1 mL/day. The second and third groups received 1% and 10% extract of bigroot geranium, respectively, as a food supplement. Changes in cell counts were investigated after 4 weeks following the initiation of the trial. Results. After a 4-week administration of 1% extract of bigroot geranium (1 mL/day) (mice group, n=7), leukocyte count in the peripheral blood increased to 6.1×109 cells/L, and lymphocyte count – to 70%, but changes were not statistically significant. The other case group of mice (n=7) received 10% extract of bigroot geranium for 4 weeks at a dose of 1 mL/day. In this group, leukocyte count in the peripheral blood increased statistically significantly from 4.4×109 cells/L to 7.2×109 cells/L (p<0.01), and lymphocyte percentage – from 52% to 80% (p<0.001), as compared to control. Thymocyte (T lymphocytes) counts in thymus and splenocyte (B lymphocytes) counts in the spleen showed a tendency to increase after the administration of 1% and 10% extracts. After a 4-week administration of 1% extract of bigroot geranium, thymocyte and splenocyte counts increased from 0.342×106 cells to 0.372×106 cells per mg of tissue and from 0.395×106 cells to 0.405×106 cells per mg of tissue, respectively, as compared to control group (p>0.1). After the administration of 10% extract of bigroot geranium, thymocyte count increased to 0.488×106 cells per mg of tissue (p<0.01), and splenocyte count – to 0.504×106 cells per mg of tissue (p<0.01). Conclusion. The extracts of the leaves of bigroot geranium increased leukocyte count and lymphocyte percentage in the peripheral blood, and after a 4-week administration of 10% extract of bigroot geranium, a statistically significant increase in the counts of T lymphocytes (in the thymus) and B lymphocytes (in the spleen) was observed. The immunostimulatory effect depends on the dose of the extract.

scholarly journals Crude ethanol extract from babassu (Orbignya speciosa): cytotoxicity on tumoral and non-tumoral cell lines

2008 ◽  
Vol 80 (3) ◽  
pp. 467-476 ◽  
Author(s):  
Magdalena N. Rennó ◽  
Gleyce M. Barbosa ◽  
Patricia Zancan ◽  
Venicio F. Veiga ◽  
Celuta S. Alviano ◽  
...  
Keyword(s):  
Cell Line ◽  
Cell Lines ◽  
Human Lymphocytes ◽  
Ethanol Extract ◽  
Mouse Fibroblast ◽  
Maximal Effect ◽  
Nuclear Condensation ◽  
Popular Medicine ◽  
Tumoral Cell ◽  
Promising Source

Plant-derived substances have been considered as important sources of drugs, including antineoplasic agents. Babassu mesocarp is popularly used in Brazil as a food additive, and in popular medicine against several conditions, such as inflammations, menstrual pains and leukaemia. From babassu Orbignya speciosa (Mart.) Barb. Rodr. [Arecaceae (Palmae)] epicarp/mesocarp, an ethanol extract was prepared and named OSEME, which was tested on the viability,morphology and metabolism of several cell lines, such as the leukaemic cell lines, HL-60, K562 and the latter multidrug resistant counterpart K562-Lucena 1, the human breast cancer cell line MCF-7, the mouse fibroblast cell line 3T3-L1 and fresh human lymphocytes. OSEME promoted a dose-dependent decrease on the viability of all cells. This effect was much more pronounced on the tumoral cell lines than on non-tumoral cells, a phenomenon revealed by the dose of OSEME which promotes half of maximal effect (ID50). The decrease on viability was followed by shrinkage of cells, alteration on their morphology, and a markedly nuclear condensation. Curiously, stimulation of 6-phosphofructokinase activity (6.6-times) was observed on HL-60 cells, treated with OSEME, when compared to control treated with ethanol (vehicle). These results support evidences to suggest OSEME as a promising source of novel antineoplasic agents.

scholarly journals IMMUNOMODULATORY EFFECTS OF ETHANOL EXTRACT OF CURCUMA MANGGA RHIZOMES IN MICE

2017 ◽  
Vol 10 (9) ◽  
pp. 148 ◽  
Author(s):  
Yuandani Yuandani ◽  
Edy Suwarso
Keyword(s):  
Therapeutic Potential ◽  
Ethanol Extract ◽  
Negative Control ◽  
Total Leukocyte Count ◽  
Phagocytic Index ◽  
Immunomodulatory Activity ◽  
Immunomodulatory Effects ◽  
Immunostimulatory Activity ◽  
Immunomodulatory Potential

Objective: This study was conducted to evaluate the immunomodulatory effects of ethanol extract of Curcuma mangga by in vivo study.Methods: The ethanol extract of C. mangga was comprised to carbon clearance method for its immunomodulatory potential. The extract wasadministered orally at doses of 100, 200, and 400 mg/kg BW to mice for 7 days. On day 8, carbon ink was injected, and the blood was collected formeasurement of elimination of carbon. Total leukocyte count was also determined.Results: The evaluation of immunomodulatory potential of ethanol extract of C. mangga revealed a dose-dependent increase in phagocytosis ability.The phagocytic index of ethanol extract of C. mangga was more than those of negative control, indicating the immunostimulatory activity of C. mangga.It showed low stimulation on total leukocyte count.Conclusion: The results indicate that ethanol extract of C. mangga rhizomes possesses immunomodulatory activity and has therapeutic potential forthe treatment of infectious diseases.

scholarly journals Floatation-Spectrophotometric Determination of Thorium, Using Complex Formation with Eriochrome Cyanine R

2011 ◽  
Vol 6 ◽  
pp. ACI.S5949 ◽  
Author(s):  
Sabah Shiri ◽  
Ali Delpisheh ◽  
Ali Haeri ◽  
Abdolhossein Poornajaf ◽  
Tahereh Khezeli ◽  
...  
Keyword(s):  
Complex Formation ◽  
Aqueous Phase ◽  
Signal To Noise Ratio ◽  
Calibration Graph ◽  
Signal To Noise ◽  
Brij 35 ◽  
Relative Standard ◽  
Optimized Conditions ◽  
Interfering Ions

A novel and sensitive floatation-spectrophotometric method is presented for determination of trace amounts of thorium in water samples. The method is based on the ion-associated formation between thorium, Eriochrome cyanine R and Brij-35 at pH = 4 media. The complex was floated in the interface of the aqueous phase and n-hexane by vigorous shaking. After removing the aqueous phase the floated particles were dissolved in methanol and the absorbance was measured at 607 nm. The influence of different important parameters such as Eriochrome cyanine R and surfactants concentration, pH, volume of n-hexane, standing time and interfering ions were evaluated. Under optimized conditions the calibration graph was linear in the range of 6-230 ng mL-1 of thorium with a correlation coefficient of 0.9985. The limit of detections (LOD), based on signal to noise ratio (S/N) of 3 was 1.7 ng mL-1. The relative standard deviations for determination of 150 and 30 ng ml-1 of thorium were 3.26 and 4.41%, respectively (n = 10). The method showed a good linearity, recoveries, as well as some advantages such as sensitivity, simplicity, affordability and a high feasibility. The method was successfully applied to determine thorium in different water and urine samples.

Dynamic Characterization of the Threshold Voltage Instability under the Pulsed Gate Bias Stress in 4H-SiC MOSFET

2017 ◽  
Vol 897 ◽  
pp. 549-552 ◽  
Author(s):  
Mitsuo Okamoto ◽  
Mitsuru Sometani ◽  
Shinsuke Harada ◽  
Hiroshi Yano ◽  
Hajime Okumura
Keyword(s):  
Threshold Voltage ◽  
High Speed ◽  
Stress Measurement ◽  
Measurement Instrument ◽  
Relaxation Effect ◽  
Gate Bias ◽  
Bias Stress ◽  
Speed Measurement ◽  
Gate Bias Stress

The threshold voltage (Vth) instability of 4H-SiC MOSFETs was investigated using high-speed IV measurement instrument. DC stress measurement of wide time span ranging from 10-6 to 103 s without relaxation effect was conducted. The high-speed measurement allowed of dynamic ΔVth measurement under pulsed AC gate bias stress. We investigated effects of NO POA in gate oxidation process on the Vth instabilities.

scholarly journals Toxicity Test of Ethanol Extract Ant Plant Local Aceh (Mymercodia sp) Method of BSLTLarvae Shrimp Artemia salina Leach

2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Frengki F ◽  
Roslizawaty R ◽  
Desi Pertiwi
Keyword(s):  
Crude Extract ◽  
Toxicity Test ◽  
Brine Shrimp ◽  
Ethanol Extract ◽  
Artemia Salina ◽  
Phytochemical Screening ◽  
Brine Shrimp Lethality ◽  
Rotary Evaporator

Toxicity test and phytochemical screening of ant plant ethanol extract were done. The toxicity test was done by employing the Brine Shrimp Lethality Test (BSLT) method. Sample of ant plant taken from the Aceh Besar forest have been extracted with ethanol. The sample was thenconcentrated using a rotary evaporator until a crude extract was obtained. The extract was tested by toxicity to larva Artemia salina L. Thetoxicity test for larvae Artemia salina Leach have been done by employing the Brine Shrimp Lethality Test (BSLT) method at four concentrationlevels, i.e: 250 ppm, 125 ppm, 50 ppm, and 25 ppm. The result of the research showed that ethanol extract of ant plant Aceh had acute toxicityby LC value 61.11 ppm. The extract had identified were fenolik, saponin, steroid and terpenoid.____________________________________________________________________________________________________________________Key words: rine Shrimp Lethality Test, LC5050, Ant Plant, Aceh, Bphytochemical Screening 

scholarly journals Identification of Transient Receptor Potential Vanilloid 3 Antagonists from Achillea alpina L. and Separation by Liquid-Liquid-Refining Extraction and High-Speed Counter-Current Chromatography

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2025 ◽  
Author(s):  
Shi-Wei Sun ◽  
Rong-Rong Wang ◽  
Xiao-Ying Sun ◽  
Jia-He Fan ◽  
Hang Qi ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
High Speed ◽  
Transient Receptor Potential ◽  
Receptor Potential ◽  
Ethanol Extract ◽  
Liquid Extraction ◽  
Transient Receptor Potential Vanilloid ◽  
Liquid Liquid Extraction ◽  
Transient Receptor ◽  
Counter Current

Bioassay-guided fractionation of the ethanol extract of whole herbs of Achillea alpina led to the isolation of isochlorogenic acids A and B as transient receptor potential vanilloid 3 (TRPV3) channel antagonists by using a calcium fluorescent assay. The structures were identified by spectroscopic analysis and the inhibitory activities of isochlorogenic acids A and B were confirmed by whole-cell patch clamp recordings of human embryonic kidney 293 (HEK293) cells expressing human TRPV3. Molecular docking results revealed that these two compounds reside in the same active pocket of human TRPV3 channel protein with lower binding energy than the agonist 2-aminoethoxydiphenyl borate (2-APB). High-speed counter-current chromatography (HSCCC) coupled with a liquid-liquid extraction approach was successfully established for the separation of isochlorogenic acids A and B from the whole herbs of A. alpina. Ethyl acetate and n-hexane-ethyl acetate-water (3:3:4 and 1:5:4, v/v/v) were selected as liquid-liquid extraction solvent systems to remove high- and low-polarity impurities in the mixture. Sixty g of ethanol extract was refined by solvent partition to yield 1.7 g of the enriched fraction, of which 480 mg in turn obtained 52.5 mg of isochlorogenic acid B (purity 98.3%) and 37.6 mg isochlorogenic acid A (purity 96.2%) after HSCCC with n-hexane-ethyl acetate-water containing 1% acetic acid (1:4:8, v/v/v).

scholarly journals Allelopathic and Herbicidal Effects of Crude Extract from Chromolaena odorata (L.) R.M.King and H.Rob. on Echinochloa crus-galli and Amaranthus viridis

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1609
Author(s):  
Thanatsan Poonpaiboonpipat ◽  
Ramida Krumsri ◽  
Hisashi Kato-Noguchi
Keyword(s):  
Crude Extract ◽  
Physiological Mechanism ◽  
Ethanol Extract ◽  
Petri Dish ◽  
Thiobarbituric Acid ◽  
Herbicidal Activity ◽  
Chromolaena Odorata ◽  
Concentrated Suspension ◽  
Inhibitory Compounds ◽  
Whole Plant

The present study was aimed at investigating the allelopathic effects of a crude extract from Chromolaena odorata (L.) R.M.King and H.Rob. (Siam weed). The effects of 70% crude ethanol extract from the whole plant, leaf, stem, and root on the germination and growth of Echinochloa crus-galli and Amaranthus viridis seedlings were evaluated using Petri-dish tests under laboratory conditions. Crude extracts from the leaf showed the highest inhibitory activity. The leaf extract (OR) was further separated by sequential solvent extraction to provide hexane (HX), ethyl acetate (ET), and butanol (BU) fractions, which were also evaluated using Petri-dish tests. The hexane fraction was significantly the most active; therefore, it was selected for formulation in a concentrated suspension and tested for its herbicidal characteristics. The formulation showed greater early post-emergence than post- and pre-emergence activities, respectively. The physiological mechanism of the formulation was tested against E. crus-galli and showed that chlorophyll a and b and the carotenoid contents of the leaf dramatically decreased when the concentration was increased, suggesting its ability to disrupt the process of photosynthesis. As thiobarbituric acid reactive substances also occurred in the leaf of E. crus-galli, this suggests lipid peroxidation and cell disruption. These results represent the possibility that C. odorata extract contains inhibitory compounds with herbicidal activity and could be used as an early post-emergence herbicide for weed control.

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