Bio

Professional profile

An organic chemistry associate professor with over 27years teaching experience at university level. I have published thirty three (33) papers in refereed journals,  supervised two (2) Ph.D. and twelve(12) M.Sc. students in chemistry to completion. I have  supervised fourty five (45) students at undergraduate level. Three (3) Ph.D and five (5) MSc are ongoing.

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(Last updated: March 12, 2018)

Publications

2018

Ooko, JO, J.O. O, A.O. Y, P.M. G.  2018.  Use of accelerated tests to estimate corrosion rates of roofing sheets. International Journal of Sciences. 37(3):1-8.publication_juspher_onyatta_yusuf_guto.pdf

2017

Ogilo, JK, Onditi AO, Salim AM, Yusuf AO.  2017.  Assessment of levels of heavy metals in paints from interior walls and indoor dust from residential houses in Naiirobi County, Kenya. Chemical Science International Journal. 21(1):1-7.chemical_science_international.pdfchemical_science_international.pdf
Birgen, J, Yusuf AO, Wafula G, Onyatta JO.  2017.  Assessment of sulphur dioxide levels in selected sites in Athi River, Kenya. International Journal of Trend in Scientific Research and Development. 1(5):416-422.scan_trend.pdf

2016

Ooko, J, Onyatta JO, Yusuf AO.  2016.  Atmospheric corrosion studies in Kenya. Past, present and future. African Corrosion Journal. 2(1):25-32.afr_cor_j_corrosion.pdf
L.K., N, M.S. A, V. N, A.S. O, A.O. Y.  2016.  Isolation and molecular characterization of chrome-resistant bacteria from chrome-contaminated tannery waste from disposal sites in Kenya. Journal of Applied Chemistry. 9(10):1-5.iosr_9_10_2_chrome.pdf
J., O, A. Y, J. O.  2016.  Assessment of selected parameters for industrial effluents from some industrial sites in Nairobi, Kenya. Univesal Journal of Chemistry. 4(2):65-68.ujc_4_2_effluents_assessment_2016.pdf

2015

V., S, J. K, B. O, A. Y, M. K.  2015.  In-vitro anthelmintic activity of vernonia amygdalina Del. (asteraceae) roots using adult Haemonchus contortus worms. International Journal of Pharmacological Research. 5(1):1-7.vernonia_amygdalina.pdf

2014

Orata, D, Yusuf AO, Nineza C, Mbui D, Mukabi M.  2014.  Surface modified electrodes used in cyclic voltammetric profiling of quinine, as antimalarial drug. Journal of Applied Chemistry. 7(5):81-89.iosr_7_5_2_2014_quinine.pdf
Yusuf, AO, Gitu PM, Bhatt BM, Njogu M, Salim A, Orata D.  2014.  Solid-Phase Peptide Synthesis of Arginine-vasopressin With Amide Side chain of Asparagine Protected With 1-Tetralinyl Group. Journal of Chemistry & Materials Research. 6(4):60-65.cmr_spps_arg_vaso.pdf
Yusuf, A, Gitu P, Bhatt BM, Njogu M, Salim A, Orata D.  2014.  Solid-Phase Peptide Synthesis of Arginine-vasopressin With Amide Side chain of Asparagine Protected With 1-Tetralinyl Group. Journal of Chemistry & Materials Research. 6(4):60-65.
Orata, D, Yusuf AO, Nineza C, Mukabi M, D. M.  2014.  Surface Modified Electrode Used In the Electro-Analysis of N- Acetyl P-Aminophenol- A Pharmaceutical Drug . Journal of Applied Chemistry. 7(5):90-99.iosr_7_5_2_2014_acetyl.pdf
D., O, H. N, M. M, A.O. Y.  2014.  Sodium thiosulphate, a novel electrocatalyst in the electrosynthesis of electronically conducting polymer-polythiophene. Journal of Applied Chemistry. 7(5):73-85.iosr_7_5_3_sodium_thio.pdf
D., O, H. N, M. M, A.O. Y.  2014.  Polyaniline and polythiophene modified electrodes in energy storage units with hydrocarbon gel/bentonite/sodium chloride as electrolyte gel. Journal of Applied Chemistry. 7(5):63-80.iosr_7_5_2_polyaniline.pdf
D., O, A.O. Y, C. N, M. M.  2014.  Electrochemical characterization of amoxycillin, a broad spectrum antibiotic on a bentonite host matrix, using cyclic voltammetry. Journal of Applied Chemistry. 7(5):50-58.iosr_7_5_3_2014_amoxycillin.pdf
D., O, A.O. Y, C. N.  2014.  Electroanaysisof unconventional (herbal) drugs using surface modified electrodes in conjunction with cycic votammetry. Journal of Applied Chemistry. 7(5):56-62.iosr_7_5_2_2014_herbal.pdf
V., S, J. K, B. O, A.O. Y.  2014.  In-Vitro anthelmintic Bioactivity study of Eclipta prostrata L. (whole plant) using adult Haemonchus contortus worms: A case study of Migori County, Kenya. Journal of Pharmacy & Biological Sciences. 9(6):45-53.iosr_pbs__eclipta.pdf
  2014.  Electro-characterization of polypyrrole electrosynthesized on a montomorillonite host-matrix, in aqueous media containing sulphuric acid as supporting electroyte. Journal of Applied Chemistry. 7(5):59-72.iosr_7_5_3_2014_polypyrolle.pdf
Akenga, P, Salim A, Onditi A, Yusuf AO.  2014.  Determination of selected micro and macronutrients in sugarcane growing soils in Kakamega North District, Kenya. Journal of Applied Chemistry. 7(7):34-41.iosr_7_7_1_2014_micronutrients.pdf
Mutembei, JK, Salim AM, onditi OA, Waudo W, Yusuf AO.  2014.  Determination of heavy metals and nutrients in Rivers Naka and Irigu, Chuka, (Kenya) usind atomic absorption spectrometry and UV/Visible spectrometry. Journal of Applied Chemistry. 7(11):82-88.iosr_7_11_1_naka_river.pdf
Yusuf, AO, Gitu PM, Bhatt BM, Mbugua MN, Salim MA, Orata D.  2014.  1-Tetralinyl as carboxamide protecting group for asparagines and application to N-alpha-t-butyloxycarbonyl (Boc) solid-phase peptide synthesis of oxytocin. Journal of Chemistry & Materials Research. 6(2):1-11.cmr_6_2_tetralinyl_oxytocin_2014_.pdf
s. Derese, Barasa L, Akala HM, Yusuf A, Kamau E, Matthias H.  2014.  4'-Prenyloxyderrone from the stem bark of milletia oblata ssp. teitensis and the antiplasmodial activities of isoflavones from some miletia species. Phytochemistry Letters. 8:69-72.scan0020.pdf
Muiva, L, Macharia B, Akala H, Derese S, Omosa LK, Yusuf A, Kamau E, Koch A, Heidenreich M, Yenesew A.  2014.  6a-Hydroxy-α-toxicarol and (+)-Tephrodin with antiplasmodial activities from Tephrosia species. Phytochemistry Letters. 10:179-183.scan0062.pdf
Orata, D, Yusuf A, Nineza C, Mbui D, Mukabi M.  2014.  Surface modified electrodes used in cyclic voltammetric profiling of quinine, as antimalarial drug”. IOSR Applied Chemistry. 7(5, ver II):81-89.scan0001.pdf
Orata, D, Yusuf A, Nineza C.  2014.  Derivatized electrodes in the electroanalysis of pyrimethamine and/or 2-sulfanilamido-3-methoxypyrazine(metakelfin) and lumefantrine / artemether (Coatem. Chemistry and Chemicall Engineering. 8:215-225.scan0011.pdf
Yusuf, A, Gitu P, Bhatt B, Njogu M, Salim A, Orata D.  2014.  1-Tetralinyl as carboxamide protecting group for asparagines and application to N-alpha-t-butyloxycarbonyl (Boc) solid-phase peptide synthesis of oxytocin. chemistry and materials research. 6(2):1-11.

2011

Yusuf, A.  2011.  Organic Chemistry Manual 2 (SCH 202). scan0024.pdf

2010

Mbugua, P, Salim A, Onditi A, Yusuf A.  2010.  Determination of Micronutrients and micronutrients in Soil Samples from Around Lake Ol-Bolossat. Int. J. Biol. Sci.. 2(8):140-148.scan0016.pdf
DM, K, A S, A O, A Y.  2010.  Environmental effects of selected chemical and physical geothermometers at Olkaria Geothrmal power plant. Journal of Sustainable Development. 3(6):14-25.: International journal of Sustainable development Abstractscan0015.pdfWebsite

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2007

Mbugua, MN, Yusuf AO, Bhatt BM, P.M. G.  2007.  CONVERSION OF VERNONIA GALAMENSIS OIL TO PYRIDINYLVERNOLAMIDES AND THEIR ANTIMICROBIAL ACTIVITIES . Bulletin of the Chemical Society of Ethiopia. 21(1):103-110.bcse_21_1_vernonia_galamensis_2007.pdf

2006

Mbugua, M, Yusuf A, Gitu P.  2006.  Synthesis of Vernolamides from Vernonia galamensis oil under varied conditions and their antimicrobial activities. The Kenya Chemical Society. 3:1-8.scan0017.pdf
Sambo, AS, Iloeje OCJ, Ojosu OJ, Olayande S, Yusuf AO.  2006.  Nigeria's Experience on the Application of IAEA‟ s Energy Models (MAED & WASP) for National Energy Planning.

2005

SA, O, PF M, GJ S, J M, S K, GA O, HD. S.  2005.  Plasmodium falciparum: evaluation of a quantitative nucleic acid sequence-based amplification assay to predict the outcome of sulfadoxine-pyrimethamine treatment of uncomplicated malaria.. AbstractFull text link

A quantitative nucleic acid sequence-based amplification (QT-NASBA) assay was employed to predict retrospectively the outcome of sulfadoxine-pyrimethamine (SP) treatment of uncomplicated malaria in children aged <6 years in an endemic region. Blood samples were collected at initial diagnosis and during follow-up. Mutation-specific nested PCR methods to analyse DHFR (Arg-59) and DHPS (Glu-540) mutations that are associated with SP drug resistance were applied. Parasite genotyping was performed to distinguish between re-infection and recrudescence. Eighty-six patients were recruited of which 66 were available for follow-up. Nine children were classified as early treatment failure, 13 cases were classified as late clinical failure, 32 as late parasitological failure, and only 12 children had an adequate clinical and parasitological response. DHFR and DHPS mutations conferring SP resistance were abundant in the Plasmodium population. Blood samples obtained 7 days after treatment were used to predict retrospectively the outcome of SP treatment. QT-NASBA was able to give a correct prediction of treatment outcome in 85.7% of the cases. Positive predictive value (PPV) of QT-NASBA case was 95% (95% confidence interval = 88.3-100) and negative predictive value (NPV) was 63% (95% CI = 39.5-86.5). In contrast, microscopy correctly predicted outcome in only 37.5% of the cases. PPV of microscopy was 100% (95% CI = 73.9-100) and the NPV was 25.5% (95% CI = 13.0-38.0). The analysis of a day 7 blood sample with QT-NASBA allows for the prediction of late clinical or parasitological treatment failure in the majority of the cases analysed in the present study.

2004

Yusuf, A.  2004.  Organic Chemistry 2 (SCH 202). , Nairobi: University of Nairobi Pressscan0023.pdf
Yusuf, A, Bhatt B, Gitu P.  2004.  1-Tetralinyl group for asparagine side-chain protection, and application to Boc solid-phase peptide synthesis”. The Kenya Chemical Society. 2:14-18.
Yusuf, A, Bhatt B, Gitu P.  2004.  1-Tetralinyl group for asparagine side-chain protection and application to Boc- Solid-phase Peptide Synthesis of mesotocin. The Kenya Chemical Society. 2(1):14-18.: Journal of the Kenya Chemical Society Abstractscan0018.pdfWebsite

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2002

Yusuf, AO, Bhatt BM, Gitu PM.  2002.  Protection of amide side-chain of asparagine with the 1-tetralinyl group in the solid-phase peptide synthesis of lysine-vasopressin. South African Journal of Chemistry. 55:87-96.sajc_55_prot_of_amide_chain_2002.pdf

2001

Yusuf, AO, Bhatt BM, Gitu PM.  2001.  ’SPPS of isotocin with amide of asparagine protected with 1-tetralinyl. TFMSA deprotection, cleavage and air oxidation of mercapto groups to disulphide. Bulletin of the Chemical Society of Ethiopia. 15(2):143-149.bcse_15_2_spps_isotocin_2001.pdf

1998

Gitu, PM, Yusuf A, Bhatt BM.  1998.  Application of tetralinyls as carboxamide protecting groups in peptide synthesis. Bulletin of the Chemical Society of Ethiopia. 12(1):35-43.bcse_12_1_1998.pdf
Yusuf, A.  1998.  Solid-phase peptide syntheses of oxytocin, oxytocin analogs and interferon short chain with the amide side-chain functionality of asparagine protected with 1-tetralinyl group. , Nairobi: University of Nairobiscan0021.pdf
Gitu, P, Yusuf A, Ogutu V.  1998.  Application of tetralinyl group in solid-phase peptide synthesis. Int. J. BioChemiPhysics. 6,7(1,2):7-10.scan0055.pdf

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