Results 1 to 10 of about 11,256 (144)

Response surface methodology-optimized extraction of flavonoids from pomelo peels and isolation of naringin with antioxidant activities by Sephadex LH20 gel chromatography [PDF]

open access: yesCurrent Research in Food Science, 2023
In this study, flavonoids were extracted from pomelo peels and naringin was isolated from the flavonoid extract. The effects of extraction parameters, namely, ethanol concentration, solid-to-liquid ratio, and extraction time, on the yield of flavonoids ...
Yuchen Shangguan   +7 more
exaly   +4 more sources

Two new sphingolipids from the stem bark of Synsepalum msolo (Sapotaceae)

open access: yesBiochemistry and Biophysics Reports, 2021
Synsepalum msolo commonly known as Bang Bali in Bali-Nguemba, Cameroon is used in traditional medicine against various diseases. The leaves and stem bark extracts were subjected to silica gel and Sephadex LH20 column chromatography to yield pure ...
Ache Roland Ndifor   +7 more
doaj   +1 more source

Thành phần hóa học của cao chiết ethyl acetate từ cây ba chẽ Desmodium triangulare (Retz.) Merr

open access: yesTạp chí Khoa học Đại học Cần Thơ, 2022
Trong nghiên cứu này, thành phần hóa học của cao chiết ethyl acetate từ thân và lá cây ba chẽ đã được nghiên cứu. Mẫu nguyên liệu khô được nghiền nhỏ, sau đó chiết bằng phương pháp ngấm kiệt với methanol thu được cao chiết thô.
Mai Phương Trang   +12 more
doaj   +1 more source

PHYTOCHEMICAL INVESTIGATION AND MOLLUSCICIDAL ACTIVITY OF OREOPANAX RETICULATUM DONN [PDF]

open access: yesBulletin of Pharmaceutical Sciences. Assiut University, 2004
The unsaponifiable part of the petroleum ether fraction of the leaves and stems of Oreopanax reticulatum Donn (Family Araliaceae) was analysed by GLC to reveal the presence of a series of hydrocarbons, cholesterol, stigmasterol and  -sitosterol.
Abdel-Hameed, S.   +3 more
doaj   +1 more source

Insecticidal characteristics and structural identification of the potential active compounds from Streptomyces sp. KR0006: Strain improvement through mutagenesis

open access: yesPLoS ONE, 2022
Pest control by biological means is an effective, eco-friendly, and promising method that typically involves compounds naturally derived from actinomycetes. Thus, the present study aimed to screen, characterize, and identify the structure of insecticidal
Young Sook Kim   +4 more
doaj   +2 more sources

Bioactive components of endophytic fungi from two Hainan mangrove plants

open access: yesShenzhen Daxue xuebao. Ligong ban, 2022
Mangrove endophytic fungi are one of the important sources for discovering natural drug leads. In order to obtain natural compounds with novel structures, the metabolites of two mangrove endophytic fungi Phomopsis sp.
CHEN Biting   +7 more
doaj   +1 more source

High-yield production of secoisolariciresinol diglucoside from flaxseed hull by extraction with alcoholic ammonium hydroxide and chromatography on microporous resin

open access: yesFood Production, Processing and Nutrition, 2021
This study used alcoholic ammonium hydroxide to directly hydrolyze and extract secoisolariciresinol diglucoside (SDG) from flaxseed hull in a one pot reaction.
Cong-Cong Zhuang   +5 more
doaj   +1 more source

Gel permeation chromatography of neutral hydroxy lipids on Sephadex LH-20

open access: yesJournal of Lipid Research, 1970
Gel-permeation chromatography on Sephadex LH-20, using ethanol as eluent, permits the resolution of neutral hydroxy lipids according to molecular size.
M. Calderon, W.J. Baumann
doaj   +1 more source

AKTIVITAS ANTIOKSIDAN EKSTRAK GAMBIR YANG DIPURIFIKASI MENGGUNAKAN KROMATOGRAFI KOLOM SEPHADEX LH-20

open access: yesAgritech, 2012
Antioxidant Activity of Purifi ed Gambir Extract Using Sephadex LH-20 Column Chromatography ABSTRAK Telah dilakukan ekstraksi terhadap gambir menggunakan tiga jenis pelarut [aquades:etanol (1:1), etanol:etil asetat (1:1), dan etil asetat], dilanjutkan ...
Rusdin Rauf   +2 more
doaj   +1 more source

Isolation and Identification of Secondary Metabolites Produced by Phytopathogenic Fungus Corynespora cassiicola from Hevea brasiliensis

open access: yesMolecules, 2022
The secondary metabolites of the phytopathogenic fungus Corynespora cassiicola CC01 from Hevea brasiliensis were investigated. As a result, two new compounds, 5-acetyl-7-hydroxy-6- methoxybenzofuran-2(3H)-one (1) and (S)-2-(2,3-dihydrofuro [3,2-c]pyridin-
Xiaoyan Yang   +7 more
doaj   +1 more source

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