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| 1 | Kopsia Singapurensis提取物对酸性介质中低碳钢的缓蚀效应(英文)显示文摘The influence of the alkaloid extract of Kopsia singapurensis on the corrosion behavior of mild steel (MS) in 1 mol·L-1 HCl and 1 mol·L-1 H2SO4 was studied using electrochemical techniques, viz., potentiodynamic polarization and AC impedance. The experimental results clearly show that the plant extract effectively inhibits corrosion in both acid media and the inhibition efficiency obtained from the electrochemical techniques is in good agreement. Furthermore, the polarization technique indicates that the extract acts as an anodic type inhibitor in HCl and as a mixed type in H2SO4. Scanning electron microscopy (SEM) was carried out to examine the surface morphological changes of metal specimens in both the inhibited and uninhibited solutions. SEM images show the formation of an adsorbed layer over the metal surface by the inhibitor molecule. The presence of alkaloidal constituents in the plant extract was confirmed by Fourier transform infrared (FTIR) spectroscopy and chemical analysis. | RAJA Pandian Bothi RAHIM Afidah Abdul OSMAN Hasnah AWANG Khalijah | 2010 | 物理化学学报2010，26，8： | 4 |
| 2 | Antiplasmodial and Antioxidant Isoquinoline Alkaloids from Dehaasialongipedicellata显示文摘 | Azeana Zahari Foo Cheah Jamaludin Mohamad Syazreen Sulaiman Marc Litaudon Kok Leong Khalijah Awang | 2014 | Planta Med2014，，： | 2 |
| 3 | Indole Alkaloids of Alstonia angustifolia var. latifolia as Green Inhibitor for Mild Steel Corrosion in 1 M HCl Media显示文摘 | Pandian Bothi Raja Ahmad Kaleem Qureshi Afidah Abdul Rahim Khalijah Awang Mat Ropi Mukhtar Hasnah Osman | 2013 | Journal of Materials Engineering and Performance2013，，4： | 1 |
| 4 | Spectaflavoside A, a new potent iron chelating dimeric flavonol glycoside from the rhizomes of Zingiber spectabile Griff.显示文摘 | Yasodha Sivasothy A. Hamid A. Hadi Khalit Mohamad Kok Hoong Leong Halijah Ibrahim Shaida Fariza Sulaiman Kheng Leong Ooi Khalijah Awang | 2012 | Bioorganic & Medicinal Chemistry Letters2012，，11： | 1 |
| 5 | 7 α -Hydroxy- β -Sitosterol from Chisocheton tomentosus Induces Apoptosis via Dysregulation of Cellular Bax/Bcl-2 Ratio and Cell Cycle Arrest by Downregulating ERK1/2 Activation显示文摘 | Mohammad Tasyriq Ibrahim A. Najmuldeen Lionel L. A. In Khalit Mohamad Khalijah Awang Noor Hasima Olumayokun A. Olajide | 2012 | Evidence-Based Complementary and Alternative Medicine2012，，： | 1 |
| 6 | In vitro antiplasmodial and antioxidant activities of bisbenzylisoquinoline alkaloids from Alseodaphne corneri Kosterm显示文摘Objective:To study antiplasmodial and antioxidant activities of the isolation of alkaloids from the active dichloromcthanc extract of Alseodaphne corneri.Methods:Phytochemical studies of the crude extract led to the isolation of six alkaloids using recycle high performance liquid chromatography and preparative thin layer chromatography.The antiplasmodial activity of the isolated compounds was evaluated usingthe histidinc-rich protein II assay.The isolated alkaloids were also tested for their antioxidant activity using three different assays:DPPH.ferric reducing ability of plasma and metal chelating assays.Results:Malaria infection caused the formation of free radicals which subsequently led to oxidative stress and apoplosis.The antioxidant properties of the alkaloids under investigation revealed that in addition to the aniiplasmodial activity,the alkaloids could also prevent oxidative stress.(+)-laurotetanine and(+)-norstephasubine exhibited strong antiplamodial activities with IC_(50) values of 0.189 and 0.116 μM.respectively.Conclusions:Interestingly,the two most potent compounds that exhibit aniiplasmodial activity also exhibit good antioxidant activities.The crude dichloromcthanc extract and the isolated compounds exert substantial aniiplasmodial and antioxidative activities which in turn suppress oxidative stress and cause less damage to the host. | Azeana Zahari Abdulwali Ablat Yasodha Sivasothy Jamaludin Mohamad Muhammad I. Choudhary Khalijah Awang | 2016 | Asian Pacific Journal of Tropical Medicine2016，9，4： | 0 |
| 7 | Inhibitive effect of Xylopia ferruginea extract on the corrosion of mild steel in 1M HCl medium显示文摘The alkaloid content of the leaves and stem bark of Xylopia ferruginea plant was isolated and tested for its anticorrosion potential on mild steel corrosion in a hydrochloric acid medium by using electrochemical impedance spectroscopy,potentiodynamic polarization measurement,scanning electron microscopy(SEM),and Fourier transform infra red(FTIR) analysis.The experimental results reveal the effective anticorrosion potential of the plant extract.The mixed mode of action exhibited by the plant extract is evidenced from the polarization study.SEM images proof the formation of a protective layer over the mild steel surface,and this is supported by the FTIR study.The possible mode of the corrosion inhibition mechanism has also been discussed. | Pandian Bothi Raja Afidah Abdul Rahim1 Hasnah Osman1 Khalijah Awang | 2011 | International Journal of Minerals,Metallurgy and Materials2011，18，4： | 0 |
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