Ethyl acetate extract

Lichens, formed by the symbiosis of fungi and algae or cyanobacteria, are increasingly recognized for their potential medicinal properties, including their potential to treat type 2 diabetes. Many studies have shown that the bioactive metabolites of lichens originate from their fungal partners. This study isolated the mycobiont from a Graphis lichen sample and investigated the antioxidant and α-glucosidase inhibitory activity of its ethyl acetate extract.

10p visergeyne 18-06-2024 2 0   Download

Alocasia odora is a common plant species in Viet Nam. A phytochemical investigation of the ethyl acetate extract (EtOAc) of A. odora rhizomes collected in Tuyen Quang province led to the isolation and determination of five compounds, including three alkaloids, alocasin A, hyrtiosin B, hyrtiosulawesine (3), one mono-phenol, phydroxycinamic acid, and one fatty acid, myristic acid.

7p viamancio 04-06-2024 4 0   Download

Isaria cicadae, currently identified as Paecilomyces cicadae (Miq.) Samson (Cordycipitaceae, Hypocreales, Ascomycetes), is a parasitic fungus on cicadas and is considered a folk medicine in traditional medicine. In this research, the antioxidant activity of some extracts from the biomass and fruit bodies of Isaria cicadae F0004 isolated in Vietnam was investigated.

13p dianmotminh02 03-05-2024 4 1   Download

In this work, we report the isolation and structure characterization of four compounds from ethyl acetate extract of the aerial part of D. harmandii for the first time. Especially, the absolute configuration of dimer stilbene ampelopsin F was successfully established upon circular dichroism (ECD) data. Besides, the cytotoxic properties of these compounds was also investigated on the cancer cell lines.

6p dianmotminh02 03-05-2024 3 1   Download

In this study, the antidengue virus activity of the ethanol extract from the leaves and twigs of E. cyathophora on four virus serotypes DENV1-DENV4 was examined. The result showed that the ethanol extract displayed antidengue activity on DENV1-4 with PRNT50 values of 15.625-62.5 µg/mL. This extract was fractionated to the n-hexane and ethyl acetate fractions.

7p dianmotminh02 03-05-2024 3 1   Download

Bruguiera parviflora belongs to Bruguiera genus, which possesses several biological activities such as antidiabetic, antiinflammatory, and antioxidant. Phytochemical investigation of the ethyl acetate extract from Bruguiera parviflora leaves was carried out bioassay-guided isolation and obtained three known compounds, namely kochioside A (1), oleanolic acid (2) and quercitrin (3).

8p vibego 02-02-2024 1 0   Download

This study was done to investigate the phytochemicals of fruits of G. schomburgkiana grown in Tay Ninh Province. Four compounds α-mangostin (1), β-mangostin (2), fuscaxanthone A (3), and 9-hydroxycalabaxanthone (4) were isolated from the ethyl acetate extract of Garcinia schomburgkiana fruits.

6p vimichaelfaraday 28-12-2023 5 3   Download

The content of total polyphenols, DNA damage protective effect, and antioxidant activity of different solvent extracts including hexane, acetidin (ethyl acetate), acetone, ethanol, and methanol) from Garcinia mangostana pericarp were investigated and compared.

6p viisac 23-09-2023 2 1   Download

Vigna radiata (L.) Wilczek, commonly known as mung bean, is a legume cultivated for its edible seeds and sprouts across Asia. In this study, we report the isolation and structural elucidation of four flavonoids and one steroid from the ethyl acetate extract of V. radiata pods.

7p viengels 25-08-2023 4 2   Download

Miliusa velutina Dun Hook. f. et. Thoms is the rare and native plant, belongs to the Annonaceae family. The isolated compounds in Miliusa genus showed that many function groups and have diverse bioactivities. From the ethyl acetate extract of the trunk of Miliusa velutina, three compounds were isolated and determined based on 1D, 2D NMR spectra, MS and combined comparison with references.

5p viberkshire 09-08-2023 6 4   Download

In our continuing search for bioactive molecules, we collected a Streptomyces fradiae strain cultured from a prickly pen shell sample obtained at Van Phong, Khanh Hoa province, Vietnam. The ethyl acetate extract of Streptomyces fradiae G650 exhibited the strong inhibition against a panel of gram-positive bacteria including Enterococcus faecalis ATCC 29212, Staphylococcus aurerus ATCC 25923, Bacillus cereus ATCC 14579, and the yeast Candida albicans with the MIC values of 8, 32, 32, 8 µg/mL, respectively.

8p viannee 02-08-2023 6 3   Download

From the ethyl acetate extract of the leaves of Amensiodendron chinense (Merr.) Hu (Sapindaceae), we isolated three known phenolic compounds: 4-hydroxy-3-methoxybenzaldehyde (1), methyl 3,4-dihydroxybenzoate (2), and 3,4-dihydroxybenzoic acid (3). We elucidated their chemical structures from the spectral data and compared them with those reported in the literature.

5p vispiderman 15-06-2023 6 2   Download

Macrosolen tricolor (Lec.) Dans. is a traditional medicinal plant and belongs to the family Loranthaceae, which is distributed in Nha Trang, and Phan Rang. This paper describes the isolation, structural elucidation, and cytotoxic activity of compounds from the ethyl acetate extract of the whole plant of M. tricolor (Lec.) Dans.

5p vidoctorstrange 06-05-2023 4 2   Download

In this paper, experiments were designed to investigate the proliferation activity of ethanol, n-hexane, chloroform, ethyl acetate and methanol extracts from D. bonii rhizomes on MG-63 human osteoblast-like cells.

10p vidoctorstrange 06-05-2023 2 2   Download

The chemical composition, antioxidant properties and antibacterial activities of different extracts (water, ethanol, acetate ethyl and hexane) and essential oil from Platycladus orientalis leaves were analysed in this study. The essential oil was extracted by hydrodistillation, and its chemical composition was determined by gas chromatography coupled to mass spectrometry (GC-MS).

11p lyhuyenthu 31-01-2023 8 2   Download

Hydnophytum formicarum is a medicinal plant that has a variety of bioactive compounds and has been traditionally used for therapeutic purposes. Hydnophytum formicarum grows on the stems of large trees and in a symbiosis with a type of ants. This study investigates the effects of technological factors on the extraction process of Hydnophytum formicarum in n-hexan, ethyl acetate, and ethanol solvents by using the Soxhlet method.

6p vijaguar 16-11-2022 9 1   Download

The study "Isolation and characterization of antibacterial compounds from Euphorbia tirucalli against Xanthomonas axonopodis pv. citri" focused on the comparison of the extraction yield and antibacterial properties of Euphorbia tirucalli against X. axonopodis pv. citri, phytochemical screening, quantification of phenolic and flavonoid contents of the fraction extract.

8p tieuvulinhhoa 22-09-2022 11 2   Download

Fractions yielded from Phellinus gilvus fruiting bodies by liquid-liquid partition of methanol extract contained various bioactive compounds such as phenolics, flavonoids and terpenes. Butanol, water and ethyl acetate fractions had large amount of phenolics, 158.12 - 247.31 mg of gallic acid equivalents (GAE)/g and low amount of flavonoids, 21.74 - 36.05 mg of quercetin equivalents (QE)/g.

9p vimelindagates 18-07-2022 5 2   Download

Seven compounds including abietatriene (1), oleanolic acid (2), quercetagetin 3,7-dimethyl ether (3), luteolin (4), p-hydroxybenzoic acid (5), p-methylbenzoic acid (6), and protocatechuic acid (7) were isolated from the n-hexane: ethyl acetate (1:1) extract of Vitex negundo leaves collected in Binh Thuan Province. Their chemical structures were elucidated by comparing their spectroscopic data with reported data in the literature. Six compounds (exception of 4) were known to be present in Vitex negundo.

8p vithales 19-04-2022 16 1   Download

The aerial of Cissus modeccoides was collected in Binh Duong province, Vietnam. The ethanolic extract from this aerial was prepared by maceration. By liquid-liquid extraction, three extracts, n-hexane, ethyl acetate, and methanol were obtained. Three known anthraquinones 1-3 and two phenolic compounds 4-5 were isolated from the ethyl acetate extract by chromatography technique.

7p vithales 19-04-2022 16 1   Download