Matasyoh, Josphat Clement

Written by Egerton University on .

CURRICULUM VITAE

Name

Matasyoh, Josphat Clement

 

 

 

 

Marital status

Married

Denomination

Catholic

Nationality

Kenyan

Languages

English, Swahili, German

Address

Chemistry Department, Egerton University, P. O. Box 536, Egerton-20107. Kenya. Email address: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , This e-mail address is being protected from spambots. You need JavaScript enabled to view it

EDUCATION

1992 – 1996

Ph.D. in Organic Chemistry (University of Tuebingen – Germany)

1989 – 1991

M.Sc. in Applied Chemistry (University of Malawi – Malawi)

1985 – 1988

BSc. in Chemistry (University of Nairobi)

1982 – 1983

Mombasa Polytechnic – High School section (‘A’ Level)

1978 – 1981

Kabete Technical School (‘O’ Level)

1973 – 1977

Mukumu Primary School (C.P.E)

1972

Gichungo Primary School

1971

Rayetta Primary School

EMPLOYMENT

13th Nov. 1996 – 23rd June 1999

Lecturer in Chemistry

24th June 1999 – 2nd March 2008

Senior Lecturer in Chemistry

3rd March 2008 – 25th March 2013

Associate Professor of Organic Chemistry

26th March 2013 to date

Professor of Organic Chemistry

INTERNATIONAL RESEARCH VISITS

PERIOD

UNIVERSITY/INSTITUTION

FUNDING AGENCY

Dec. 1994

Oklahoma Medical Research Foundation (USA)

OMRF/DAAD

May – July 2001

University of Tuebingen (Germany)

DAAD

May – July 2003

University of Tuebingen (Germany)

DAAD

Oct – Dec. 2004

Newe Yaar Research Centre (Israel)

USAID

May – June 2006

University of Tuebingen (Germany)

DAAD

Apr. – June2008

University of Kassel (Germany)

DAAD

May – July 2009

University of Tuebingen (Germany)

DAAD

Sept09 – Aug10

University of Goettingen (Germany)

Humboldt Foundation

May – Oct 2011

Technical University of Berlin (Germany)

Humboldt Foundation

20th – 26th June 2012

Technical University of Berlin (Germany)

Gernan Ministry of Education and Research

May – June 2014

Technical University of Berlin (Germany)

DAAD

10th – 25th April 2015

Helmholtz Centre for Research in Infectious Diseases in Braunschweig, Germany

Humboldt Foundation – Group Research Linkage

1st – 30th July 2015

Helmholtz Centre for Research in Infectious Diseases in Braunschweig, Germany

ERAFRICA – ASAFEM Project

June – August 2016

Technical University of Berlin (Germany)

Humboldt Foundation research fellowship

RESEARCH AWARDS/FELLOWSHIPS

2001

Equipment and materials grant from the DAAD

2001 – 2014

6 Research awards from the German Academic Exchange Service (DAAD)

2009

The prestigious Georg Forster Research Fellowship for experienced researchers from the Alexander von Humboldt Foundation (Germany)

2011

Return fellowship award from the Alexander von Humboldt Foundation

2012

Equipment grant from the Alexander von Humboldt Foundation for the purchase of a High Performance Liquid Chromatography (HPLC)

2016

3 Month research fellowship from the Alexander von Humboldt Foundation

CONFERENCES/WORKSHOPS

DATE

CONFERENCES/WORKSHOPS

16th –  21st June 1996

VII International Symposium on Free Radicals-Bardolino, Italy

16th – 21st August 1999

Kenya Chemical Society Conference at JKUAT

25th – 31st August 2001

NAPRECA Conference at K.I.C.C. Nairobi

13th September 2003

K.C.S. AGM at Egerton University

4th April 2005

NAPRECA workshop at the University of Nairobi, Kenya.

1st – 12th August 2005

NAPRECA workshop/symposium in Antananarivo-Madagascar.

22nd – 26th August 2005

KCS conference at Kenyatta University

7th July 2006

Attended a NAPRECA seminar day at JKUAT

17th – 21st July 2006

Egerton Unversity Research week.

25th – 29th Sept. 2006

NAPRECA summer school in Gaborone, Botswana

6th – 10th Nov. 2006

UNISTAFF REAL Conference at Kenyatta University, Kenya.

29th Nov. – 1st Dec. 2006

DAAD conference at the University of Nairobi

24th – 26th Jan. 2007

Green Chemistry Conference in Stellenbosch, Cape Town. South Africa

2nd – 7th April 2007

VICRES Proposal writing workshop in Jinja, Uganda.

16th – 26th July 2007

NAPRECA workshop and symposium in Kampala, Uganda

18th – 19th Oct. 2007

Organised KDSA conference at Egerton University

25th – 26th Oct. 2007

JKUAT International conference in Nairobi

25th – 28th Feb. 2008

IOCD-ISDNP Joint symposium on natural products in Kasane, Botswana

31st March –  2nd April 2009

World Conference on Education for Sustainable Development – Moving into the Second Half of the UN Decade. Bonn, Germany.

7th –  9th October 2009

Humboldt Network workshop at the University of Oldenburg, Germany

24th – 26th August 2010

Humboldt Kolleg workshop in Nairobi, Kenya with the theme: Synergy and Networking to Enhance Research and Development

20th – 22nd July 2011

Workshop on Natural Products Chemistry in Tuebingen, Germany.

9th – 10th Nov. 2011

International Deans Course Regional Workshop at Kenyatta University with the theme: Quality and Strategic Management in Higher Education Institutions in Eastern Africa.

15th – 17th Nov. 2011

DAAD Conference in Nairobi with the theme: Capacity Development for the County Governments in the New Constitutional Dispensation in Kenya.

21st – 26th Nov. 2011

International Health Workshop in Dar es Salaam, Tanzania with theme: Cross-cutting Agriculture and Health.

15th – 17th February 2012

Second Conference of International Year of Chemistry held at the University of Nairobi.

17th – 20th July 2012

International workshop at Sarova Taita Hills Hotel with the theme: The Future of Biodiversity Research in Africa: Scope, opportunities, collaboration, access and sharing benefits.

15th – 16th November 2012

KDSA sponsored workshop held at Egerton with the theme: From Research to Action Towards the Attainment of Kenya Vision 2030.

20th – 24th January 2013

The First International Conference on Pesticidal Plants held at ICIPE Nairobi

23rd – 25th October 2013

Academia – Private Sector Forum and Exhibitions 2013 at Kenyatta International Conference Centre, Nairobi.

4th – 7th December 2013

Kenya’s Soda Lakes Workshop held at KWS Training Institute in Naivasha

3rd – 10th December 2013

The 15th Symposium of the Natural Products Research Network for Eastern and Central Africa (NAPRECA) held in Khartoum, Sudan.

3rd – 4th February 2014

The 3rd Pest Management Conference of the Sudan, ARC, Wad Medan, Sudan

6th – 8th March 2014

Humboldt Colloquium "The Power of Excellence in Science – Enhancing Academic Capacities in Africa" held at Safari Park Hotel in Nairobi.

3rd September 2014

A presentation of my ERAfrica project to the Ministry of higher education officials at Jogoo House.

16th – 18th September 2014

A presentation of my ERAfrica project at the ERAfrica kick-off conference held in Pretoria, South Africa.

4th – 5th November 2014

Pan African Chemistry Network Symposium held at the University of Nairobi

5th – 8th May 2015

Kenya Chemical Society held at the University of Nairobi

15th – 16th January 2016

Humboldt Kolleg in Addis Ababa Ethiopia.

6th – 8th April 2016

Humboldt Kolleg in Naivasha, Kenya entitled: Research and Networking: Laying the Foundation for the Sustainable Development Goals (SDG’s).

18th November 2016

Presented a talk at the University of Sao Paulo in Brazil entitled: “Natural Products Research as a Tool for the Control of Crop, Animal and Human Disease Vectors”

22nd – 24th November 2016

3rd ResNet NPND Natural Products Research in Neglected Tropical Diseases Scientific meeting in Bogota, Columbia.

6th – 10th February 2017

International Conference on Pesticidal Plants in Victoria Falls, Zimbabwe.

PANNEL DISCUSSIONS

2nd April 2009

Sustainability within the organic chemistry lab course. Bonn, Germany

28th Sept. 2011

Internalisation Strategy for Research in Germany – German Parliament. Berlin, Germany.

2nd Nov. 2011

Tele-conference on Innovations at Egerton University with Ministry of Higher Education officials and experts.

OTHER PROFESSIONAL EXPERIENCES AND RESPONSIBILITIES

2001 – 2011

Acted as COD several times

2001 – 2005

Member of Egerton University – Tea Research Foundation of Kenya MOU Committee

2002 – 2006

Academic advisor to Postgraduate students of Chemistry Department

2002 – 2008

Seminar Coordinator of Chemistry Department, Egerton University

2003 – 2005

Chairman of Conference/Seminar Committee of Kenya Chemical Society

2003 – 2008

Treasurer, Kenya Chemical Society, Nakuru Chapter

2004 – 2007

Member, NAPRECA Kenya Executive Committee

2004 - 2011

Vice Chairman of Kenya DAAD Scholars Association – Egerton Chapter

2007 – 2008

Secretary, Rapid Results Initiative Committee on improvement of library services in Egerton University

Apr. – June 2008

Successfully attended a University management course at the University of Kassel, Germany and did a project entitled: Reorganisation of Research Management as an Institutional Reputation Building Process. The case of Egerton University

Feb. – March 2010

Chair of the committee preparing a proposal on climate change mitigation strategies entitled: Use of Innovative Technologies in Mitigation and Adaptation Measures to Climate Change in the Mau Complex Ecosystem

2009 – 2011

Faculty representative to Board of Undergraduate Studies (BUGS) and Chair Faculty BUGS committee.

2009 – 2011

Faculty representative to Quality Assurance Board and Chair Faculty Quality Assurance committee

2009 – to date

Vice Chairman, Egerton University Senior Common Room

March – June 2011

Chair of the committee preparing a proposal for the establishment of a Science Park at Egerton University

August 2010 – to date

Treasurer, Humboldt Alumni Association Kenya Chapter

June 2012 to date

Member, Faculty of Science Research Committee

2nd – 4th October 2012

Facilitator at the Research Management Training for Egerton researchers held at Chester Hotel in Nakuru.

26th – 27th November 2012

Facilitator at the Research Project Implementation Workshop for Egerton researchers held at CMRT Egerton.

22nd September 2015

Member, Research Oversight Committee of Egerton University

26th March 2013 to date

Member of Egerton University Senate

December 2015

Appointed Alexander von Humboldt Ambassador Scientist in Kenya

MEMBERSHIP OF PROFESSIONAL ORGANISATIONS

1.

Kenya Chemical Society

2.

NAPRECA – Natural Products Research Network for Eastern and Central Africa

3.

DAAD alumni

4.

Green Chemistry – Africa Chapter

5.

Alexander von Humboldt alumni

6.

Global Malaria Alliance

7.

Pan African Chemistry Network

8.

ResNet NPND– Research Network Natural Products against Neglected Diseases

RESEARCH INTERESTS

Antimicrobial, mosquito larvicidal, insecticidal, acaricidal and anthelmintic activities of secondary metabolites from tropical fungi, plants and their endophytic microbes.

ONGOING COLLABORATIVE RESEARCH PROJECTS

Project Title

Funding Agency

1.

Biological Insect Control

USAID  – USA

2.

Control of Moulds and Associated Mycotoxins in Foods

VicRes - SIDA

3.

Mosquito larvicidal secondary metabolites from endophytes

The Humboldt Foundation

4.

A Natural Botanical Larvicide, Caplarvex

Egerton University

5.

Anthelmintic Secondary metabolites from Teclea Nobilis against Ascaridia galli in Indigenous Chicken

Egerton University

6.

Plant Based Natural Acaricides for the Control of Livestock Ectoparasites

Egerton University

7.

Isolation of Bioactive Secondary Metabolites for the Control of Plant Pathogens in Maize and Beans

The Humboldt Foundation

8.

Antibiotics and anti-quorum sensing compounds from African fungal endophytes inhabiting medicinal plants and cultures of macromycetes

ERAFRICA – EU – Africa joint Funding

9.

Anthelmintic Secondary Metabolites from Indigenous African Plants and their Endophytes

BMBF (Mobility funds) and Egerton University

10.

Development of biopesticides from medicinal plants and their microbial endophytes for the control of maize and bean pathogens

National Research Fund - Kenya

POSTGRADUATE SUPERVISION

Successfully supervised over 40 postgraduate students and several still under supervision.

EXTERNAL EXAMINATION

 

  1. An external examiner of theses for the Chemistry Department of University of Nairobi, Jomo Kenyatta University of Agriculture and Technology, University of Eldoret, University of Kabianga, Makerere University in Uganda, Addis Ababa University in Ethiopia.
  1. External examiner of exams for the Chemistry Department of University of Nairobi.
  1. External examiner of exams for the Chemistry Department of University of Kabianga.

 

Patents Application

1.

Caplarvex, A Natural Botanical Mosquito Larvicide

Publications

1.

Two cytotoxic triterpenes from cultures of a Kenyan Laetiporus sp. (Basidiomycota). Clara Chepkirui, Josphat Clement Matasyoh, Cony Decock, Marc Stadler. Phytochemistry Letters (2017). Accepted 13 April 2017. In Press

2.

Anti-Trypanosomatid Elemanolide Sesquiterpene Lactones from Vernonia lasiopus O. Hoffm Njogu M. Kimani, Josphat C. Matasyoh, Marcel Kaiser, Reto Brun, Thomas J. Schmidt. Molecules. 22, 597, (2017).

3.

Monochlorinated calocerins A-D and 9-oxostrobilurin derivatives from the basidiomycete Favolaschia calocera. Clara Chepkirui, Christian Richter, Josphat Clement Matasyoh, Marc Stadler. Phytochemistry 132, 95-101, (2016).

4.

Laxitextines A and B, Cyathane Xylosides from the Tropical Fungus Laxitextum incrustatum. Cynthia M. Mudalungu, Christian Richter,  Kathrin Wittstein, Muna Ali Abdalla, Josphat C. Matasyoh, Marc Stadler, and Roderich D. Suessmuth. J. Nat. Prod. 2016, 79, 894−898.

5.

Chemical composition and antifungal activity of the essential oil from Lippia javanica (Verbenaceae) Yegon K. Philemon, Josphat C. Matasyoh, and Isabel N. Wagara. International Journal of Biotechnology and Food Science. 4(1), 1-6, (2015).

6.

In vitro Assessment of Pentacyclic Triterpenoids from Leaves of Pittosporum viridiflorum against East Coast Fever Vector Rhipicephalus appendiculatus. Christine T. Nyabayo, Josphat C. Matasyoh, Charles Mwendia. American Journal of Chemistry and Application. 2(6), 95-100, (2015).

7.

Acaricidal Coumarins from the Medicinal Plant Acokanthera schimperi. Jared O. Owino, Josphat C. Matasyoh, Abdi A. Guliye. Organic and Inorganic Chemistry 1(3), 1-6 (2015).

8.

Two polymethoxylated flavonoids with antioxidant activities and a rearranged clerodane diterpenoid from the leaf exudates of Microglossa pyrifolia. Aggrey Akimanya, Jacob O. Midiwo, Josphat Matasyoh, Francis Okanga, Veronica M. Masila, Walker, Babu L. Tekwani, Ilias Muhammad, Leonidah Kerubo Omosa. Phytochemistry Letters 11, 183–187, (2015).

9.

Chemical composition and acaricidal activity of Salvia nilotica essential oil against Rhipicephalus
Appendiculatus. Christine T. Nyabayo, Josphat C. Matasyoh, Charles Mwendia. Advancement in Medicinal Plant Research. 3(2), 46-54, (2015).

10.

Antimicrobial assay and phytochemical analysis os Solanum nigrum complex growing in Kenya. Lexa G. Matasyoh, Hellen M. Murigi, Josphat C. Matasyoh. African Journal of Microbiology Research, 3923 – 3930, (2014).

11.

Chemical composition and larvicidal activity of Zanthoxylum gilletii essential oil against Anopheles gambiae. Ombito O. Japheth, Matasyoh C. Josphat, Vulule M. John. African Journal of Biotechnology. 13(21), 2175 – 2180, (2014).

12.

Chemical composition and antihelmintic activity of Teclea nobilis essential oil against Schistosoma mansoni miracidia. Mark K. Njogu, Josphat C. Matasyoh, Alfred C. Kibor. J Pharm Biomed Sci. 4(10), 880 – 886, (2014).

13.

Chemical composition and larvicidal activity of essential oil of Lippia kituiensis against larvae
of Rhipicephalus appendiculatus. Caroline J.  Kosgei, Josphat C. Matasyoh,  Charles M. Mwendia, Samuel T. Kariuki, Abdi Y. Guliye. Int. J. Biol. Chem. Sci. 8(4), 1938-1947, (2014).

14.

Phytochemical Screening, Cytotoxity Studies and Larvicidal Activity of Hexane Extract of Lippia Kituensis Against Rhipicephalus Appendiculatus. Caroline J.  Kosgei, Charles M. Mwendia, Charles G. Mwaniki, Josphat C. Matasyoh. J. Biomed. and Pharm. Res. 3(4), 105 – 110, (2014).

15.

Antifungal activity of Flavanoids isolated from Monanthotaxis littoralis against mycotoxigenic
fungi from maize. Chepkirui Clara, Josphat C. Matasyoh, Isabel N. Wagara, Jesca Nakavuma. American Journal of Chemistry and Application. 1(4), 54-60, (2014)

16.

Endophytes as producers of peptides: An overview about the recently discovered Peptides from endophytic microbes. Muna  Ali Abdalla, Josphat C. Matasyoh. Nat. Prod. Bioprospect.  4, 257–270 (2014).

17.

Isolation of Four Furoquinoline Alkaloids from Teclea Nobilis and their Activity against Schistosoma Mansoni Miracidia. Mark K. Njogu, Josphat C. Matasyoh, Alfred C. Kibor. Journal of Biomedical and Pharmaceutical Research. 3(4), 87-93 (2014).

18.

Isolation of Mycotoxigenic Moulds Contaminating Maize and Groundnuts in Selected Districts in Kenya. Isabel N. Wagara, Josphat C. Matasyoh, Jesca L. Nakavuma. Res. J. Microbiol. 9(4), 177 – 188 (2014).

19.

Chemical composition and antifungal activity of Piper capense oil against mycotoxigenic Aspergillus, Fusarium and Penicillium species. Josphat C. Matasyoh, Isabel N. Wagara, Jesca L. Nakavuma, Regina Chepkorir. Int. J. Biol. Chem. Sci. 7(4): 1441 – 1451 (2013).

20.

Antifungal activity of Monathotaxis littoralis essential oil against mycotoxigenic fungi isolated from maize. Clara Chepkirui, Josphat C. Matasyoh, Isabel N. Wagara. Int. J. Microbiol. Res. Rev. 2(6), 103 – 109 (2013).

21.

Larvicidal compounds from Fagaropsis angolensis leaves against malaria vector (Anopheles gambiae). Mudalungu C. M., Matasyoh J. C., Vulule J. M., Chepkorir R. Int. J. Malaria Res. Rev. 1(1), 1-7 (2013).

22.

Inhibitory action of some essential oils on growth of various moulds isolated from dried maize grains. Janet N. Nyukuri, Isabel N. Wagara, Josphat C. Matasyoh, Jesca L. Nakavuma. Egerton J. Sci. & Technol. 13, 1 – 10 (2013).

23.

Management of stem borers using selected botanical pesticides in a maize bean cropping system. J. O. Ogendo, A. L. Deng, E. O. Omolo, J. C. Matasyoh, Tuey, R. K., Khan, Z. R. Egerton J. Sci. & Technol. 13, 21 – 38 (2013).

24

Screening of Indigofera lupatana Baker F. root extracts for antibacterial activities. Sospeter N. Njeru, Charles M. Gathinji, Charles M. Maina, Josphat C. Matasyoh. Afr. J. Pharmacol. Ther. 1(3), 71 – 77 (2012).

25.

Antibacterial activity of methanol root extracts of Indigofera lupatana Baker F. Sospeter Njerua Ngocia, Josphat C. Matasyoh, Charles Gathinji Mwaniki Charles Maina Mwendia. Eastern Journal of Medicine 17, 11-16 (2012)

26.

Persipeptides A and B, Two Cyclic Peptides from Streptomyces sp. UTMC 1154. Fatemeh Mohammadipanah, Josphat Matasyoh, Javad Hamedi, Hans-Peter Klenk, Hartmut Laatsch.  Biorganic and Medicinal Chemistry 20, 335-339 (2011).

27.

Larvicidal Activity of Acridone Alkaloids from Zanthoxylum leprieurii against the Malaria Vector Anopheles gambiae. Josphat C. Matasyoh, Ferdinand M. Talontsi, Rostand M. Ngoumfo, Regina Chepkorir. The Natural Products Journal. 1(2), 121 – 124 (2011).

28.

Chemical composition and larvicidal activity of Piper capense essential oil against the malaria vector, Anopheles gambiae. Josphat C. Matasyoh, Euty M. Wathuta, Samuel T. Kariuki, Regina Chepkorir. Journal of Asia-Pacific Entomology 14, 26–28 (2011).

29.

Chemical composition of Cymbopogon citratus essential oil and its effect on mycotoxigenic Aspergillus species. Josphat C. Matasyoh, Isabel N. Wagara, Jesca L. Nakavuma, Anderson M. Kiburai. Afr. J. Food Sci. 5(3), 138-142 (2011).

30.

Mosquito larvicidal activity of alkaloids from Zanthoxylum lemairei against the malaria vector Anopheles gambiae. Ferdinand M. Talontsi, Josphat C. Matasyoh, Rostand M. Ngoumfo, Regina Chepkorir, Pesticide Biochemistry and Physiology 99, 82–85 (2011).

31.

Larvicidal Activity of Metabolites from the Endophytic Podospora sp. against the Malaria Vector Anopheles gambiae. Josphat C. Matasyoh, Birger Dittrich, Anja Schueffler, Hartmut Laatsch. Parasitol Res. 108, 561-566 (2011).

32.

Biocontrol Potential of selected Plant Essential Oil Constituents as Fumigants of Insect Pests Attacking Stored Food Commodities. J.O. Ogendo, A.L. Deng, M. Kostyukovsky, U. Ravid, J.C. Matasyoh, E.O. Omolo, S.T. Kariuki, A.W. Kamau, P.K. Bett, E. Shaaya. Baraton Interdisciplinary Research Journal 1(1), 13-19 (2011).

33.

Phytochemical Constituents and Antimicrobial Activity of Leaf Extracts of three Amaranthus Species. Z. C. Maiyo, R. M. Ngure, J. C. Matasyoh, R. Chepkorir. African Journal of Biotechnology 9 (21), 3178-3182 (2010).

34.

Chemical Composition and Antimicrobial Activity of Essential oil of Corriundrum sativum. J. C. Matasyoh, Z. C. Maiyo, R. M. Ngure, R. Chepkorir. Food Chemistry 113, 526–529 (2009).

35.

Bioactivity of Ocimum gratissimum L. oil and two constituents against five insect pests attacking stored food products. J. O. Ogendo, M. Kostyukovski, U. Ravid, J. C. Matasyoh, A. L. Deng, E. O. Omolo, S. T. Kariuki, E. Shaaya. Journal of Stored Product Research. 44, 328-334 (2008).

36.

Aloe Plant Extracts: An alternative Larvicide for Mosquito Control. J. C. Matasyoh, E. Wathuta, S. T. Kariuki,R. Chepkorir J. Kavulani. African Journal of Biotechnology 7(7) 912-915 (2008).

37.

Chemical composition and antimicrobial activity of the essential oil of Ocimum gratissimum L. from different populations from Kenya. Lexa G. Matasyoh, Josphat C. Matasyoh, Francis N. Wachira, Miriam G. Kinyua, Anne W. Thairu Muigai and Titus K. Mukiama. Afr. J. Trad. CAM 5(2): 187-193 (2008).

38.

Distribution of piperitone oxide stereoisomers in Mentha and Micromeria species and their chemical syntheses. O. Narkov, J. C. Matasyoh, N. Dudai, E. Lewinsohn, A. A. Mayer, U. Ravid. Flavour Fragr. J. 22, 328-333 (2007).

39.

Chemical composition and antimicrobial activity of essential oil of Tarchonanthus camphoratus. Josphat C.  Matasyoh, Joyce J. Kiplimo, Nicholas M. Karubiu, Tiffany P. Hailstorks. Food chemistry 101, 1183-1187 (2007).

40.

Chemical composition and antimicrobial activity of the essential oil of Ocimum gratissimum L. growing in Eastern Kenya. Lexa G. Matasyoh, Josphat C. Matasyoh, Francis N. Wachira, Miriam G. Kinyua, Anne W. Thairu Muigai and Titus K. Mukiama. African Journal of Biotechnology 6 (6), 760-765 (2007).

41.

Volatile oil constituents of Ocimum americanum L. occurring in Western Kenya. J. C. Matasyoh, J. O. Ogendo, A. L. Deng, E. O. Omolo. Bull. Chem. Soc. Ethiop. 20(1) 177-180 (2006).

42.

Field grain losses and insect pest management practices in subsistence agriculture: Farmers perspectives in Western Kenya. J. O. Ogendo, A. L. Deng, E. O. Omolo, J. C. Matasyoh Journal of Agriculture Science and Technology 8(1) 24-42 (2006).

43.

Chemical composition and antimicrobial activity of essential oil of Satureja biflora (Lamiaceae). Josphat C.  Matasyoh, Joyce J. Kiplimo, Nicholas M. Karubiu, Tiffany P. Hailstorks. Bull. Chem. Soc. Ethiop. 21(2), 1-6 (2006).

44.

Chemical composition and antimicrobial activity of the essential oil of Leonotis nepetifolia. Josphat C.  Matasyoh, Joyce J. Kiplimo, Nicholas M. Karubiu. Int. J. BiochemiPhysics. 14(2) (2005).

45.

Chemical Constituents of Gomphocarpus physocarpus A. Josphat C. Matasyoh, Ronald Kimutai, and Graeme Nicholson. Int. J. BiochemiPhysics 13(1) 44-50 (2004).

46.

Synthesis and Structural Elucidation of the Nitrone 3,5-Diphenyl-5-methyl-pyrroline-1-oxide. J. C. Matasyoh and H. B. Stegmann. Int. J. BioChemiPhysics Vol. 8 and 9, No. 1&2 3-6 (1999).

47.

Synthesis and the Stereochemistry of the Spin Adducts of a New Chiral Spin Trap, 3,5-Diphenyl-5-methyl-pyrroline-1-oxide. J. C. Matasyoh, Ulrich Abram, P. Schuler, and H. B. Stegmann. Magn. Res. Chem. 36, 422-428 (1998).

48.

Synthesis and Spin Trapping Stereochemistry of the Chiral Spin Trap, 5,5-Dimethyl-3-phenylpyrroline-1-oxide. Josphat C. Matasyoh, Paul Schuler, Hartmut Stegmann, J. Lee Poyer, Melinda West, Edward G. Janzen. Magn. Res. Chem. 34, 351-359 (1996).

49

Permutation Isomerization versus Metallotropy. EPR Investigation of Pentacoordinated Tin and Lead Compounds. Stegmann, H. B. and Matasyoh, J. C. Trends in Organometallic Chemistry. 1, 415-432 (1994).

50.

Levels of Mercury in Water, Fish, Sediments and Blood Samples from different Regions of Kenya. Kamau, G. N; Kinyanjui, L. W; Thairu, P. A; Matasyoh, J. C. Journal of BioChemPhysics, 1(1), 9-13 (1991).