Zobrazeno 1 - 10
of 160
pro vyhledávání: '"H.B. Hassan"'
Publikováno v:
Arabian Journal of Chemistry, Vol 13, Iss 12, Pp 9216-9230 (2020)
The chloroform (TNC), ethyl acetate (TNE) and n-butanol (TNB) fractions of Tephrosia nubica Bioss. growing in Saudi Arabia were investigated for the first time using UPLC-ESI-MS/MS in two ionization modes. The analysis revealed the tentative identifi
Externí odkaz:
https://doaj.org/article/d8557f3783754aba88915e9f943c9056
Autor:
Hanan M. Al-Yousef, Ali S. Alqahtani, Afaf E. Abdel Ghani, Sayed A. El-Toumy, Wagdi I.A. El-Dougdoug, Wafaa H.B. Hassan, Hanaa M. Hassan
Publikováno v:
Arabian Journal of Chemistry, Vol 13, Iss 11, Pp 7843-7850 (2020)
In continuation of our work on genus Euphorbia, the phytochemical investigation of ethyl acetate fraction of the aerial parts of Euphorbia geniculata Ortega (Eg) family Euphorbiaceae revealed the isolation and identification of eight polyphenolic com
Externí odkaz:
https://doaj.org/article/db89c0d0bdcd471c805e7ed23f6bc56d
Autor:
Sahar Abdelaziz, Hanan M. Al Yousef, Ali S. Al-Qahtani, Wafaa H.B. Hassan, Omer I. Fantoukh, May A. El-Sayed
Publikováno v:
Saudi Pharmaceutical Journal, Vol 28, Iss 9, Pp 1129-1137 (2020)
Parkinsonia aculeata L. growing in Saudi Arabia was investigated for its phytochemical profile, antioxidant, and cytotoxic properties. UPLC-ESI-MS/MS was employed as a powerful technique for the characterization of secondary metabolites from a hydroa
Externí odkaz:
https://doaj.org/article/305962cf08b1426da1e24bce85b0346b
Publikováno v:
Arabian Journal of Chemistry, Vol 12, Iss 3, Pp 377-387 (2019)
Polyphenolic constituents and chromatographic fingerprint of the aqueous fraction obtained from the ethanolic extract of the aerial parts of Parkinsonea aculeata L. growing in Saudi Arabia were investigated for the first time using UPLC-ESI/MS/MS in
Externí odkaz:
https://doaj.org/article/00edb4a32411401cac0289cb1a94082e
Autor:
Nasir A. Siddiqui, Hanan M. Al-Yousef, Tawfeq A. Alhowiriny, Perwez Alam, Wafaa H.B. Hassan, Musarat Amina, Afzal Hussain, Sahar Abdelaziz, Rehab H. Abdallah
Publikováno v:
Saudi Pharmaceutical Journal, Vol 26, Iss 2, Pp 266-273 (2018)
In this study, we developed a validated HPTLC method for concurrent analysis of two natural antioxidant triterpenes, oleanolic acid (OA) and β-amyrin (BA) in the biologically active fractions (petroleum ether, toluene, chloroform, ethyl acetate and
Externí odkaz:
https://doaj.org/article/cb4ffe14221f4a2088a896d92b471ffe
Autor:
Hanan M. Al-Youssef, Wafaa H.B. Hassan
Publikováno v:
Arabian Journal of Chemistry, Vol 10, Iss 1, Pp 109-113 (2017)
Reinvestigation of the biologically active ethyl acetate and butanol extracts of the aerial parts of Carissa edulis afforded 3-O-acetyl chlorogenic acid (I), along with four known flavonol glucosides including, kaempferol 3-O-β-d glucopyranoside (II
Externí odkaz:
https://doaj.org/article/eb9465f1200b4c919d95ea9e6bb0e65e
Publikováno v:
Journal of Saudi Chemical Society, Vol 19, Iss 4, Pp 410-416 (2015)
Seven flavonoidal compounds, apigenin (1), kaempferol-3-O-β-d-glucoside (2), kaempferol-3-O-α-l-rhamnoside (3), kaempferol-7-methoxy-3-O-α-l-rhamnoside (4), diosmetin-7-O-β-d-xylosyl-(1‴→6″)-β-d-glucopyranoside (5), diosmetin-7-O-α-l-arab
Externí odkaz:
https://doaj.org/article/b29ffc6ab0b943719dfd15fa5ee4d853
Autor:
Musarat Amina, Hanan M. Al-Yousef, Wafaa H.B. Hassan, Sahar Abdelaziz, May A. El-Sayed, Rasha Adel, Omer I. Fantoukh
Publikováno v:
Saudi Journal of Biological Sciences
The hydroalcoholic extract (MIT) of Micromeria imbricata (Forssk.) growing in Saudi Arabia in addition to the chloroform (MIC) and n-butanol (MIB) fractions were investigated for the first time using UPLC-ESI-MS/MS. The analysis revealed the tentativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94042f07340f407d631886898e8e3977
http://europepmc.org/articles/PMC8459081
http://europepmc.org/articles/PMC8459081
Akademický článek
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Autor:
Wagdi I.A. El-Dougdoug, Hanan M. Al-Yousef, Ali S Alqahtani, Afaf Said Ghani, Wafaa H.B. Hassan, Sayed A. El-Toumy, Hanaa M. Hassan
Publikováno v:
Saudi Journal of Biological Sciences, Vol 28, Iss 1, Pp 785-792 (2021)
Saudi Journal of Biological Sciences
Saudi Journal of Biological Sciences
Objective To investigate the effect of the ethyl acetate fraction of the aerial parts of E. paralias L. F. Euphorbiaceae on nephroprotective, cytotoxic, and antioxidant. Methods different spectroscopic and spectrophotometric methods were applied to i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46ac7eeef35eba88ab9185e0e60e13c7
http://www.sciencedirect.com/science/article/pii/S1319562X20305738
http://www.sciencedirect.com/science/article/pii/S1319562X20305738