scholarly journals REVERSAL OF CLONIDINE-INDUCED HYPOTHERMIA BY DECAFFEINATED TEA/COFFEE EXTRACT, AND THEIR FRACTIONS IN MICE

2021 ◽  
pp. 36-39
Author(s):  
BALU U. SALVE ◽  
CHANDRAKANT R. KOKARE ◽  
SANJAY B. KASTURE
Keyword(s):  
Ethyl Acetate ◽  
Diethyl Ether ◽  
Rectal Temperature ◽  
Test Period ◽  
Induced Hypothermia ◽  
Acetone Water ◽  
Decaffeinated Coffee ◽  
Water Fractions ◽  
Tea Extract ◽  
Do So

Objective: To study the effect of decaffeinated tea extract (DTE) and decaffeinated coffee extract (DCE) and their respective fractions viz: chloroform fractions (DTCf and DCCf), ethyl acetate fractions (DTEa and DCEa), diethyl ether fractions (DTDe and DCDe) and acetone-water fractions (DTAw and DCAw) against clonidine-induced hypothermia in mice. Methods: Clonidine (0.1 mg/kg, i. p.) administered to a group of mice pretreated 30 min before with the dose of DTE or DCE or their respective fractions. Rectal temperature was measured at the time of clonidine administration and thereafter at every 30 min up to 2 h test period. Results: DTE 200 DTE 300 has significantly inhibited clonidine-induced hypothermia. Among the fractions tested, DTE fraction-DTEa 100 and 200 and DCE fractions DCDe 200 and DCAw 200 significantly (p<0.0001) reversed clonidine-induced hypothermia; the effect of DTEa was found to be more sustained. Conclusion: Both, the decaffeinated tea and coffee contain ingredients that reverse clonidine-induced hypothermia, but they are required to do so in very large doses which are not achievable with normally administered doses of decaffeinated tea or coffee.

scholarly journals Chemical composition and screening of the antimicrobial and anti-oxidative activity of extracts of Stachys species

2010 ◽  
Vol 75 (10) ◽  
pp. 1347-1359 ◽  
Author(s):  
Jelena Lazarevic ◽  
Radosav Palic ◽  
Niko Radulovic ◽  
Novica Ristic ◽  
Gordana Stojanovic
Keyword(s):  
Ethyl Acetate ◽  
Diethyl Ether ◽  
Salmonella Enteritidis ◽  
Balkan Peninsula ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Disk Diffusion Method ◽  
Diethyl Ether Extract ◽  
The Common ◽  
Ethyl Acetate Extracts

GC and GC/MS analyses of the diethyl ether and ethyl acetate extracts obtained from the aerial parts of Stachys germanica subsp. heldreichii (Boiss) Hayek, Stachys iva Griseb., Stachys plumosa Griseb. and Stachys scardica Griseb., Balkan peninsula endemics, were performed. One hundred and seventy-nine constituents, accounting for 88.8-98.1% of the total composition of the extracts, were identified. The common feature of the diethyl ether extracts was the high content of terpenoids and fatty acidderived compounds, while the common feature of the ethyl acetate extracts was the prevalence of fatty acid-derived compounds. A disk diffusion method was used for the evaluation of the antimicrobial activities of the extracts against a panel of microorganisms (bacteria: Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Salmonella enteritidis; fungi: Aspergillus niger and Candida albicans). The total antioxidant capacity of the extracts was evaluated by the phosphomolybdenum method. The preliminary bioassay results indicated that the diethyl ether extract of S. plumosa could be a possible source of antioxidant and antimicrobial compounds.

scholarly journals Isolation and Elucidation Structure of 28-Hydroxy-3-Friedelanone of Nyamplung (Callophyllum inophyllum, Linn.) Leaves

2020 ◽  
Vol 9 (2) ◽  
pp. 117-125
Author(s):  
Triana Kusumaningsih ◽  
◽  
Muhammad Widyo Wartono ◽  
Nais Puji Wijanarti ◽  
◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Diethyl Ether ◽  
Column Chromatography ◽  
Ethyl Acetate Extract ◽  
Nonpolar Solvent ◽  
Ether Extract ◽  
Diethyl Ether Extract ◽  
Isolated Compound

The isolation triterpenoid from Nyamplung (Callophyllum inophyllum, Linn.) leaves has been conducted. The isolation was employed by maceration using ethanol as solvent and liquids extraction using ethyl acetate. Ethyl acetate extract was partitioned successively using nonpolar solvent with hexane, dichloromethane, and diethyl ether, respectively. The diethyl ether extract was purified by column chromatography. The isolated compound of fraction D1 was obtained as white solids crystal with yield of 0.0035%. The isolated compound was determined based on the FTIR, 1HNMR, 13CNMR, HSQC, and HMBC spectra. The isolated compound was identified as 28-hydroxy-3-friedelanone.

scholarly journals Preliminary Phytochemical Screening of wild edible fruits from Boda and Kolli hills

2017 ◽  
Vol 3 ◽  
Author(s):  
S.P. Anand ◽  
S. Deborah
Keyword(s):  
Ethyl Acetate ◽  
Diethyl Ether ◽  
Ethanol Extract ◽  
Vital Role ◽  
Kolli Hills ◽  
Diethyl Ether Extract ◽  
Therapeutic Value ◽  
Phytochemical Compounds ◽  
Wild Edible Fruits ◽  
Phytochemical Constituent

<span>Medicinal plant plays a vital role for ailment of various chronic diseases due to the presence of phytochemical constituent. The preliminary phytochemical compounds was studied by using the ethanol, ethyl acetate, diethyl ether, chloroform and aqueous extracts of 15 wild edible fruits collected from <em>Boda </em>and <em>Kolli</em> Hills. The phytochemical compounds such as Phenol, tannins, saponin, alkaloid, flavonoids, steroids, </span><span lang="EN-IN">phlobotannins</span><span>, terpenoids, anthroquinones and cardiac glycosides were screened in 15 edible fruits by using standard methods. The diethyl ether extract, ethyl acetate and ethanol extract of the selected fruits<strong> </strong>shows the presence of phytochemicals compound. The highest occurrence shows the high therapeutic value possessing majority of phytochemical constituent of active compounds. In Further studies, the compound from these fruits were isolated and used for medicinal purposes</span>

Ethyl acetate as a substitute for diethyl ether in the formalin-ether sedimentation technique.

1979 ◽  
Vol 10 (6) ◽  
pp. 852-853 ◽  
Author(s):  
K H Young ◽  
S L Bullock ◽  
D M Melvin ◽  
C L Spruill
Keyword(s):  
Ethyl Acetate ◽  
Diethyl Ether ◽  
Sedimentation Technique

Improved Anesthesia for Deep Surface-Induced Hypothermia: The Halothane-Diethyl Ether Azeotrope

1980 ◽  
Vol 29 (2) ◽  
pp. 123-129 ◽  
Author(s):  
Murray P. Sands ◽  
David H. Dillard ◽  
Eugene A. Hessel ◽  
Donald W. Miller
Keyword(s):  
Diethyl Ether ◽  
Induced Hypothermia ◽  
Deep Surface

scholarly journals A Target-Site-Specific Screening System for Antifungal Compounds on Appressorium Formation in Magnaporthe grisea

2000 ◽  
Vol 90 (10) ◽  
pp. 1162-1168 ◽  
Author(s):  
Hong-Sik Oh ◽  
Yong-Hwan Lee
Keyword(s):  
Ethyl Acetate ◽  
Rice Blast ◽  
Magnaporthe Grisea ◽  
Pathogenic Fungi ◽  
Antifungal Compounds ◽  
Screening System ◽  
Appressorium Formation ◽  
Culture Filtrates ◽  
Water Fractions ◽  
Chemical Fungicides

Chemical fungicides are a major method of control for plant diseases in spite of potential negative effects on the environment and the appearance of resistant strains. Development of new chemical fungicides has been largely dependent upon in vivo efficacy tests in the greenhouse or in fields, which is in contrast to target-oriented in vitro screening systems widely used in the pharmaceutical field. To establish a target-site—specific screening system for antifungal compounds, specific inhibition on appressorium formation of the rice blast fungus Magnaporthe grisea was employed. For many plant-pathogenic fungi, including M. grisea, appressorium formation is an essential step to infect host plants. Among 1,000 culture filtrates of members of the class Actinomycetes and fungi, five (A5005, A5008, A5314, A5387, and A5397) from the class Actinomycetes showed differential inhibitory effects on appressorium formation of M. grisea in a dosage-dependent manner. Three (A5005, A5314, and A5387) of these were further fractionated into ethyl acetate and water fractions. The ethyl acetate fraction of A5005 and both the ethyl acetate and water fractions from A5314 and A5387 inhibited appressorium formation, while conidial germination remained little affected. Inhibition of appressorium formation by the ethyl acetate or water fraction was reversed by the exogenous addition of cyclic AMP. Significantly reduced numbers of conidia with appressoria were observed on rice leaves in the presence of culture filtrates. Furthermore, these culture filtrates also exhibited significant disease control of rice blast in the greenhouse. This rapid and target-oriented screening system could be adopted to screen candidate compounds for rice blast control and could be applicable for other appressorium-forming, plant-pathogenic fungi.

scholarly journals Uji Toksisitas Akut Ekstrak dan Fraksi Kulit Batang Ketapang Laut (Terminalia Catappa L.) Menggunakan Metode BSLT

2020 ◽  
Vol 6 (1) ◽  
pp. 42
Author(s):  
Ari Sartinah ◽  
Yamin Yamin ◽  
Muhammad Arba ◽  
Nur Illiyyin Akib ◽  
Andi Nafisah Tendri Adjeng ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Ethyl Acetate ◽  
Program Analysis ◽  
Brine Shrimp ◽  
Methanol Extract ◽  
Artemia Salina ◽  
Test Method ◽  
Brine Shrimp Lethality ◽  
Terminalia Catappa ◽  
Water Fractions

AbstrakToksisitas akut merupakan kemampuan suatu bahan kimia (obat/bahan obat) dalam menimbulkan kerusakan  pada suatu organisme dalam waktu yang relatif singkat. Tujuan penelitian ini adalah untuk mengetahui potensi ketoksikan akut dari ekstrak metanol, fraksi etil asetat dan fraksi air kulit batang ketapang laut (Terminalia catappa L.). Pengujian toksisitas akut dilakukan dengan menggunakan metode BSLT (Brine Shrimp Lethality Test) dan menggunakan analisis program untuk mengetahui nilai LC50 dari ekstrak dan fraksi. Hasil uji toksisitas akut menunjukan nilai LC50  dari ekstrak metanol, fraksi etil asetat dan fraksi air kulit batang ketapang laut (Terminalia catappa L. )  berturut-turut 247,997 ppm; 400,666 ppm dan 618,046 ppm. Hal ini menunjukan bahwa ekstrak metanol batang ketapang laut (Terminalia catappa L.) bersifat paling toksik dibandingkan fraksi etil asetat dan fraksi air.Kata kunci: Ekstrak, Fraksi, Terminalia catappa L., BSLT, Artemia salina LeachAbstractAcute toxicity is the ability of chemical (drug/drug ingredient) to cause damage to organisms in a relatively short time. The purpose of this study was to determine the potential for acute toxicity of methanol extract, ethyl acetate and water fractions of sea ketapang stem skin (Terminalia catappa L.). Acute toxicity testing was performed using the BSLT (Brine Shrimp Lethality Test) method and program analysis to determine the LC50 values of extracts and fractions. The results of the acute toxicity test showed the LC50 values of methanol extract, ethyl acetate and water fractions of the plant stem skin consecutively were 247,997 ppm; 400,666 ppm and 618,046 ppm. This shows that the methanol extract of sea ketapang stems (Terminalia catappa L.) is the most toxic compared to the ethyl acetate and the water fraction.Keywords: Extract, Fraction, Terminalia catappa L., BSLT, Artemia salina Leach

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