scholarly journals Inhibitory effect of n-hexane: ethyl acetate fraction from Artemisia vulgaris L. on cell culture of oral epithelial carcinoma

2009 ◽  
Vol 42 (1) ◽  
pp. 37
Author(s):  
Ira Arundina
Keyword(s):  
Cell Culture ◽  
Ethyl Acetate ◽  
Ethyl Acetate Fraction ◽  
Inhibitory Effect ◽  
Artemisia Vulgaris ◽  
Oral Epithelial

Inhibitory effect of ethyl acetate fraction of Solanum macrocarpon L. leaves on cholinergic, monoaminergic, and purinergic enzyme activities

2018 ◽  
Vol 42 (6) ◽  
pp. e12643 ◽  
Author(s):  
Basiru Olaitan Ajiboye ◽  
Maureen Chidima Akalabu ◽  
Oluwafemi Adeleke Ojo ◽  
Olakunle Bamikole Afolabi ◽  
Mary Abiola Okesola ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Enzyme Activities ◽  
Ethyl Acetate Fraction ◽  
Inhibitory Effect

scholarly journals Uji Daya Hambat Fraksi N-Heksan dan Etil Asetat Rumput Laut Cokelat (Sargassum sp.) terhadap Pertumbuhan Bakteri Staphylococcus aureus (Inhibitory Effect of N-Hexane and Ethyl Acetate Fraction of Sargassum sp. Seaweeds against Staphylococcus aureus)

MEDULA ◽  
2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Amiruddin Eso ◽  
Sufiah Asri Mulyawati ◽  
Eka Rahmawati
Keyword(s):  
Staphylococcus Aureus ◽  
Minimum Inhibitory Concentration ◽  
Ethyl Acetate ◽  
Inhibitory Concentration ◽  
Brown Seaweed ◽  
Inhibition Zone ◽  
Ethyl Acetate Fraction ◽  
Inhibitory Effect ◽  
Inhibitory Zone ◽  
Zone Diameter

Background: Staphylococcus aureus is a gram positive bacterium that causes pyogenic infectious disease, such as boils, pimples, endocarditis and sepsis. Resistance of S. aureus is continued growth that made it becomes a very serious problem that need to be solved by looking for another effective alternative for this infection. Several of marine life can be used as a source of antibacterial medication, antiviral, and antifungal. One alternative of antibacterial that comes from water resources is brown seaweed (Sargassum sp.). Purposes: This study aimed to find out the inhibitory fraction of n-hexane and ethyl acetate of Sargassum sp. against the growth of S. aureus Methods: This study applied quasi experimental method which used posttest-only control design. Samples used in the form of brown seaweed treatment of fraction n-hexane and Ethyl acetate derived from Desa Bungin Permai Kecamatan Tinanggea Kabupaten Konawe Selatan. The fraction inhibition test was conducted by diffusion agar method used variant concentration (20%, 40%, 60%, 80%, 100%) with three repetitions. Erythromycin as control (+) and DMSO 10% as control (-).Result: The study result showed that the n-hexane and Ethyl acetate fraction of Sargassum sp. extract was able in inhibiting the growth of S. aureus that seen with the clear zone around the paper disc. Based on this result, the minimum inhibitory fraction of n-hexane and ethyl acetate obtained in this study was at the concentration of 20%. The diameter average of inhibition zone in both fractions in the concentration 20%, 40%, 60%, 80%, 100% were 9.3 mm, 12.3 mm, 25.6 mm, 27 mm, 27.7 mm for n-hexane fraction, mean while the diameter average of inhibition zone in the ethyl acetate fraction was 4.6 mm, 16 mm, 19.3mm, 27.6mm, 29.6 mm. ethyl acetate fraction at a concentration of 40%, 80%,100% inhibitory zone diameter higher than the fraction of n-hexane while at a concentration of 20% and 60% inhibitory zone diameter higner than the fraction of ethyl acetate. Conclusion: Based on the result of the study, it was concluded that the fraction of n-hexane and ethyl acetate of Sargassum sp. has an inhibitory effect against the growth of S. aureus. The Minimum Inhibitory Concentration (MIC) of n-hexane and ethyl acetate fraction was at the concentration of 20%. Fraction of n-heksan and ethyl acetate equally have a strong inhibition of the growth of S. aureus bacteria. Keywords : ethyl acetate fraction, minimum inhibitory concentration, n-hexane fraction, Sargassum sp, Staphylococcus aureus Latar Belakang: Staphylococcus aureus merupakan bakteri gram positif penyebab terjadinya penyakit infeksi yang bersifat piogenik seperti bisul, jerawat, endokarditis dan sepsis. Kejadian resistensi antibakteri terhadap S. aureus terus meningkat sehingga menjadi masalah yang sangat serius sehingga diperlukan alternatif lain untuk mengatasi penyakit infeksi yang lebih efektif. Beberapa hasil biota laut dapat dimanfaatkan sebagai antibakteri, antivirus dan antijamur. Salah satu bahan alternatif sebagai antibakteri yang berasal dari sumber perairan yakni rumput laut cokelat (Sargassum sp.). Tujuan: Penelitian ini bertujuan untuk mengetahui daya hambat fraksi N-Heksana dan Etil Asetat Sargassum sp. terhadap pertumbuhan bakteri S. aureus. Metode: Penelitian ini menggunakan metode quasi eksperimental dengan desain post test-only control. Sampel yang digunakan berupa perlakuan fraksi N-Heksan dan Etil Asetat Sargassum sp. yang berasal dari Desa Bungin Permai Kecamatan Tinanggea Kabupaten Konawe Selatan. Pengujian daya hambat dilakukan dengan metode difusi agar dalam berbagai konsentrasi 20%, 40%, 60%, 80%, 100% dengan tiga kali pengulangan. Eritromisin yang digunakan sebagai kontrol positif dan DMSO 10% (Dimetil sulfoksida) sebagai kontrol negatif. Hasil: Hasil penelitian menunjukkan bahwa fraksi Sargassum sp. mampu menghambat pertumbuhan bakteri S. aureus yang dilihat dengan adanya zona bening disekitar kertas cakram. Konsentrasi hambat minimum dari kedua fraksi pada konsentrasi 20%. Perbedaan rerata diameter zona hambat pada kedua fraksi dengan konsentrasi 20%, 40%, 60%, 80%, 100% yaitu sebesar 9,3 mm,12,3 mm, 25,6 mm, 27 mm, 27,7 mm pada fraksi n- heksan dan 4,6 mm, 16 mm, 19,3 mm, 27,6 mm, 29,6 mm pada fraksi etil asetat. Fraksi etil asetat pada konsentrasi 40%, 80%, 100% diameter zona hambatnya lebih tinggi dari pada fraksi n-heksan sedangkan pada fraksi n-heksan konsentrasi 20% dan 60% diameter zona hambatnya lebih tinggi dibandingkan fraksi etil asetat. Simpulan: Simpulan dari penelitian ini bahwa fraksi n-heksan dan fraksi etil asetat Sargassum sp. mempunyai daya hambat terhadap pertumbuhan bakteri S. aureus ekstrak rumput laut cokelat mengandung senyawa flavonoid, steroid, saponin dan tannin. Konsentrasi hambat minimum (KHM ) dari kedua fraksi yaitu pada konsentrasi 20 %. Fraksi n-heksan dan etil asetat mempunyai daya hambat yang kuat terhadap pertumbuhan bakteri S. aureusKata Kunci : fraksi etil asetat, fraksi n-heksan, Kadar Hambat Minimun, Sargassum sp,  Staphylococcus aureus

Inhibitory effect of the ethyl acetate fraction from astringent persimmon on H2O2-induced oxidative stress in HepG2 cells

2014 ◽  
Vol 23 (4) ◽  
pp. 1247-1252 ◽  
Author(s):  
Moon Seok Lee ◽  
In Il Lee ◽  
Yongeun Kim ◽  
Young Jun Kim ◽  
Ho Jin Heo ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Ethyl Acetate ◽  
Hepg2 Cells ◽  
Ethyl Acetate Fraction ◽  
Inhibitory Effect

scholarly journals Chemical constituents of the ethyl acetate extract from the leaf of mugwort (Artemisia vulgaris L.)

2019 ◽  
Vol 22 (4) ◽  
pp. 352-255
Author(s):  
Truong Van Nguyen Thien ◽  
Thien Tai Phan ◽  
Tung Thanh Phan ◽  
Lien Kim Thi Tran ◽  
Nhu Tiet Thi Tran ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Ethyl Acetate ◽  
Chemical Constituents ◽  
Ethyl Acetate Fraction ◽  
Published Data ◽  
Artemisia Vulgaris ◽  
Reduced Pressure ◽  
Medicinal Uses ◽  
Voucher Specimen ◽  
Phenyl Propanoid

Introduction: Mugwort (Artemisia vulgaris L.) is a familiar herbal medicine and also a daily vegetable. It is one of the ingredients in the famous remedy "Cao ích mẫu" specializing in menstrual disorders or the omelet with mugwort that helps save blood flow to the brain to treat headaches. In both traditional medicine and the new drugs, diseases are usually treated by mugwort as diabetes, epilepsy combination for psychoneurosis, depression, irritability, insomnia, anxiety, and stress. To demonstrate the medicinal uses, the chemical constituents of this herbal were continually studied. Methods: The leaves of mugwort were collected in Ba Ria - Vung Tau province, Vietnam. The plant was identified by the late pharmacist and botanist Binh Duc Phan. A voucher specimen (AV001) was deposited in the herbarium of the Department of Organic Chemistry, VNUHCM–University of Science. Dried leaf powder of A. vulgaris (11 kg) was extracted with methanol and evaporated under reduced pressure to give a methanol extract (910 g), which was dissolved in methanol-water (1:9) and then successively partitioned with petroleum ether, chloroform, and ethyl acetate. From the previously researched ethyl acetate fraction, nine compounds were isolated: six known phenolic compounds (luteolin, 6-methoxyluteolin, eupatilin, o-coumaric acid, vanillic acid, and protocatechuic acid), sinapyl alcohol diisovalerate, vulgarin, and one new compound (artanoic acid). Results: In this research, ethyl acetate fraction was also studied. From subfraction EA4, six compounds were isolated by three skeletons: phenolic compounds (5,4′ -dihydroxyflavone and 4-hydroxyphenyl acetate), phenyl propanoid (methyl 2-O-b -D-glucopyranosylcoumarate and 2-O-b -D-glucopyranosylcoumaric acid) and uracil (5-methyluracil and uridine). The structure of the isolated compounds was determined to base on 1D, 2D NMR spectra, HR-ESI-MS, and comparison with published data. Conclusion: Particularly, four compounds (methyl 2-O-b -D-glucopyranosylcoumarate, 2-O-b -D-glucopyranosylcoumaric acid, 5-methyluracil, and uridine) were known for the first time from this species.  

scholarly journals Chemical constituents and anti Helicobacter pylori effect of ethyl acetate fraction from Sanchezia nobilis Hook.F

2020 ◽  
Vol 11 (3) ◽  
pp. 4715-4721
Author(s):  
Xuan Bui Thi ◽  
Loi Vu Duc ◽  
Duong Le Hong ◽  
Ngoc Tran Minh
Keyword(s):  
Helicobacter Pylori ◽  
Ethyl Acetate ◽  
Chemical Constituents ◽  
Ethyl Acetate Fraction ◽  
2D Nmr ◽  
Inhibitory Effect ◽  
Reversed Phase ◽  
Ionization Mass ◽  
Concentration Method ◽  
First Time

The leaves of Sanchezia Nobilis Hook. F grown in Vietnam are extracted with ethanol then distilled for ethanol retrievement under low pressure. The ethanol concentrate was shaken with n-hexane, then stirred with ethyl acetate and concentrated fractions were obtained. From the high ethyl acetate fraction, four compounds were isolated by normal phase and reversed-phase column chromatography. Their structures were determined by spectral analysis, including 1D and 2D NMR techniques (1H, 13C, DEPT, COZY, HSQC, HMBC and NOESY), High Resolution - Electrochewmical Ionization - Mass Spectroscopy (HR-ESI-MS), and identified by comparing with the recorded data. Among the isolated compounds, compound 2 (13-O-acetylfawcettimine) was first time isolated from nature; and mixture 1 (Fawcettidin), 3 (Apigenin) and 4 (Kaempferol) were first time isolated from the Sanchezia genus. The high ethyl acetate fraction of Sanchezia Nobilis Hook. F leaves were then evaluated for the anti-Helicobacter pylori (anti-HP) effect by determining the minimum inhibitory concentration method (MIC), which showed a good inhibitory, dose−dependent effect on Helicobacter pylori. The ethyl acetate fraction at 1/8 dilution showed a complete inhibitory effect on Helicobacter pylori for as long as 24 hours. At 1/128 dilution, the fraction only showed good results on inhibition after 24 hours.

scholarly journals ANTIBACTERIAL EFFECTS OF SARANG SEMUT (MYRMECODIA PENDANS) FRACTIONS USING THREE DIFFERENT SOLVENTS TOWARD ENTEROCOCCUS FAECALIS CPS2

2020 ◽  
pp. 271-275
Author(s):  
CIPTADHI TRI OKA BINARTHA ◽  
ENDANG SUPRASTIWI ◽  
DIDIK KURNIA ◽  
ANGGRAINI MARGONO ◽  
DEWA AYU NYOMAN PUTRI ARTININGSIH
Keyword(s):  
Antibacterial Activity ◽  
Ethyl Acetate ◽  
Enterococcus Faecalis ◽  
Inhibition Zone ◽  
Ethyl Acetate Fraction ◽  
Inhibitory Effect ◽  
Positive Control ◽  
Diffusion Method ◽  
Water Fractions ◽  
Layer Chromatography

Objective: This study investigated the effect of antibacterial activity from sarang semut fractions with three different solvents, i.e. nonpolar (n-hexane),semipolar (ethyl acetate), and polar (water), to determine the minimum inhibitory concentration (MIC) on Enterococcus faecalis cps2.Methods: The fractions were extracted with a maceration method and a methanol solvent. The fractionation was performed with three groupsof solvent to obtain the n-hexane, ethyl acetate, and water fractions. The active compound from the best fraction group was identified using aphytochemical test, gas chromatography-mass spectrophotometry, and thin-layer chromatography. Each fraction group was divided into five differentconcentrations, i.e. 20%, 40%, 60%, 80%, and 100% and was assessed against E. faecalis cps2 with an agar diffusion method. Chlorhexidine 2% wasused as a positive control. The width of the inhibition zone was calculated.Results: The ethyl acetate group had the biggest inhibition zone of 21 mm in diameter compared to n-hexane and water, which was 15 mm and19 mm in diameter, respectively. The MIC value of the fraction with a 20% concentration of ethyl acetate was significantly different (P < 0.05) from then-hexane and water solvents in inhibiting the growth of E. faecalis cps2.Conclusion: The ethyl acetate fraction of sarang semut had a greater inhibitory effect on E. faecalis cps2. In addition, the antibacterial activity of thefraction increased with an increase in concentration.

scholarly journals Antimicrobial and Antioxidant Role of the Aerial Parts of Aconitum violaceum

2021 ◽  
Vol 65 (1) ◽  
Author(s):  
Farman Ali Khan ◽  
Sardaraz Khan ◽  
Nasir Mehmood Khan ◽  
Hidayatullah Khan ◽  
Shahnaz Khan ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Antimicrobial Effect ◽  
Ethyl Acetate Fraction ◽  
Inhibitory Effect ◽  
Chloroform Fraction ◽  
E Coli ◽  
Aerial Parts ◽  
Biological Potential ◽  
Brine Shrimp Lethality Assay ◽  
Ic50 Values

Abstract. In the current studies, crude and subsequent fractions of Aconitum violaceum aerial parts were screened for their toxicity, antimicrobial effects as well as antioxidant potential. Phytochemically, the plant is enriched in alkaloids alongside anthraquinones (present in ethyl acetate fraction (AV3) and saponins (detected in chloroform fraction (AV2). In Brine shrimp lethality assay, AV3 was the most potent (59 %) in killing Artemia naupili larvae at a dose of 1000 µg/mL. AV3 exhibited strongest antimicrobial effect against the bacteria E. coli (80 %) and S. flexneri (76 %) as well as against the tested fungi, A. niger (86 %) respectively. However, chloroform fraction (AV2) was the most effective (almost 90 %) antifungal against A. niger and C. albicans. Overall, strong antioxidant activity was observed for AV3 with IC50 values of 120.04 ± 0.4 µg/mL (65.4 ± 0.01 standard) in DPPH and 125.1 ± 0.3 µg/mL (2.0 ± 0.03 standard) in ABTS free radical assays. AV3 showed promising inhibition against acetylcholinesterase (AChE) 70 ± 0.8 % and butyrylcholinesterase (BChE) 57 ± 0.2 % at dose of 100 µg/mL thus confirming a potent invitro cholinesterase inhibitory effect. The overall results indicated strong biological potential of ethyl acetate fraction obtained form A. violaceum and a possible new therapeutic source could be formulated from its pure isolates.   Resumen.

Assessment of Antimicrobial Activity and total Polyphenol Content of Rosa multiflora and Rosa wichuraiana

2019 ◽  
Vol 10 (04) ◽  
pp. 646-650
Author(s):  
Hyeusoo Kim ◽  
Kyeong Won Yun
Keyword(s):  
Antimicrobial Activity ◽  
Ethyl Acetate ◽  
Antimicrobial Agents ◽  
Ethyl Acetate Fraction ◽  
Rosa Multiflora ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Water Fraction ◽  
Total Polyphenol Content ◽  
Rosa Species

The fruit of Rosa multiflora has been used as traditional herbal medicine in Asian countries. The present investigation was undertaken to study the antimicrobial activity and total polyphenol content of hexane, ether, ethyl acetate, water fraction of methanol extract of fruit and flower from Rosa multiflora and Rosa wichuraiana. Antimicrobial activity of the mentioned fractions against 3 gram-positive and 4 gram-negative bacteria using disk diffussion method. The measurement of minimal inhibition concentration (MIC) showed that the ethyl acetate fraction of the two Rosa species is the most effective against the tested bacteria. The total polyphenol content of ethyl acetate fraction of the two Rosa species is higher than the other fractions. The results indicate the antimicrobial activity was related with the total polyphenol content and the fruit and flower of the two Rosa species can be considered as a natural source of antimicrobial agents.

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