Photo- Anncarol

Position: Lecturer
Department: Biochemistry, Microbiology & Biotechnology
Contact Address: P.O. Box 43844-00100, Nairobi, Kenya
Email: This email address is being protected from spambots. You need JavaScript enabled to view it./ This email address is being protected from spambots. You need JavaScript enabled to view it.
Area of Specialization: Microbiology
Research Interests:  Environmental, Agricultural and Industrial Sciences

View full CV pdf


  • Karanja, A., Njeru, E. M. and Maingi, J., Assessment of physicochemical changes during composting rice straw with chicken and donkey manure. International Journal of Recycling of Organic Waste in Agriculture. 2019, pp 1–8.
  • Karanja, A., Maingi, J. and Njeru, E. M. Evaluation of maturity levels and heavy metal content in composts made from rice straw. 2019, Advances in Agricultural Science.
  • Karanja, A., Kotut, K. and Gitonga, N. Assessment of Physico-chemical Properties of Kasarani Section of River Thome, Nairobi. Journal of Geography, Environment and Earth Science International, 3(4), 2015, pp 1-5; Article no.JGEESI.20051 ISSN: 2454-7352

Ongoing and Past Research

  • Assessment of physicochemical and bacteriological quality of River Thome, Nairobi.
  • Prevalence of waterborne diseases and Assessment of Bacteriological quality of municipal and borehole water supplies in Nairobi Kenya.
  • Effect of sulphur oxidizing bacteria onsimulated concrete sewerage systems.
  • Isolation and characterization of bioactive antimicrobial endophytes in Aloe vera and Azadirachtaindica.
  • In vitro antibacterial activity ofselected honey samples on Yersinia enterocolitica obtained from raw pork in Nyeri County.
  • Biodegradation of polythene and reusable carrier bags in waste landfills in Nairobi and Kisumu Counties, Kenya.
  • Bacterial and heavy metalcontamination of Brassica oleracea acephalagrown in peri-urban area of Kericho town, Kericho County, Kenya.
  • Genetic diversity and vector competence of Aedesaegyptipopulations in Kisumu and Malaba for Zika and Chikungunya viruses.

Conferences and Workshops Attended

  • June 2023:Technology Development Programme, Royal Academy of Engineering, UK
  • November 2022: Sciencepreneurship & Knowledge Management Conference Conference Committee Member, Theme Convener & Rapporteur
  • November 2022: Patent Drafting Boot Camp Kenya Intellectual Property Institute
  • September 2022: Technology Transfer & Commercialization Workshop Research Division, KU & HNU
  • June 2021: Technology Transfer & Commercialization Workshop, Research Division, KU & HNU
  • October 2022:Regional Workshop on Universalization and Effective Implementation of the Biological Weapons Convention in Eastern Africa.
  • November 2021: Sustainability Conference Corporate Commitment to Climate Change in Kenya, KCIC
  • October 2021: Capacity Building Webinar on Green-Economy and Sustainability UNESCO & Kenyatta University
  • June 2021: International Workshop on Sustainable Development Goals Recirculate and Actuate, Nigeria
  • May 2022: Keynote Spearker, Blue Economy and Sustainable Marine Tourism, Sustainable Tourism Africa Summit 2022
  • June 2021:International Workshop on Sustainable Development Goals Recirculate and Actuate, Nigeria
  • May 2021; Waste to Wealth Workshop Recirculate and Actuate, Nigeria
  • December 2020: Communicating Climate Change and Blue Economy Oral presentation, WANON Media
  • December 2020: International Conference of Women Scientists and Engineers,Oral Presentation, KWSE, Korea
  • November 2020 Academic-Industry Partnerships for competitive innovations, Conference School of Business, Kenyatta University
  • October 2020: Oral presentation Korea Women Scientists and Engineers
  • June 2020: Workshop COVID-19 Disease Pandemic
  • October 2019: Oral presentation Kenyatta University Biennial Research & Innovation Conference
  • August 2019:Poster presentation Africa International Biotechnology and Biomedical Conference
  • November 2018: Oral presentation Innovation, University- Industry Conference
  • October 2018: Oral and Poster presentation 6th African RUFORUM International Biennial Conference
  • August 2018: Poster presentation Africa International Biotechnology and Biomedical Conference.

Membership in Professional Bodies

  • Member, Southern African Research and Innovation Management Association
  • Member, Organisation for Women in Sciences for the Developing World (OWSD)
  • Member, American Society of Microbiology
  • Member, Engineering 4 Change, Kenya
  • Member, African Society of Microbiology