DR. Segun Gbolagade JONATHAN
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DR. Segun Gbolagade JONATHAN Academic and Professional Qualifications B.Sc., M.Sc. Microbiology PhD Mycology (Ibadan) Reader Area of Specialization: Food, Industrial & Environmental Mycology Office Room 8, Department of Botany & Microbiology, University of Ibadan. Tel: +2348164746758 Contact: [email protected] [email protected] Dissertation and Thesis Physiological studies on some yeast strains associated with cocoa beans fermentation B.Sc,project 1991) Production of acetone and butanol from microorganisms (M.Sc Long Essay & Seminar,1994) Nutritional requirements of Volvariella esculenta,(Mass)Singer,a Nigerian fungus (M.Sc.dissertation,1994) Vegetative growth requirements and antimicrobial activities of some higher fungi from Nigeria (Ph.D thesis , 2002) Membership of Learned Societies Science Association of Nigeria (Member) Mycological Society of Nigeria (Member) Botanical Society of Nigeria ( Member) Microbiology Association of Nigeria (Member) Mushroom Growers’ Association of Nigeria ( Secretary) Mycological Society of America (Member) American Society for Microbiology (Member) Nigerian Field Society (Member) African Mycological Society (Member) Details of Teaching Experience at University level: (a) Undergraduate Courses Units BOT 141 Basic Principles of Botany 3 BIO 211 Introductory Genetics and Cell Physiology 3 BIO 221 General Microbiology 1 3 BIO 222 General Microbiology II 3 1 BOT 361 Plant Physiology and Biochemistry 3 BOT 321 Mycology 3 BIO 314 Plant Pathology 3 MBIO 305 Microbiological Techniques 2 MBIO 309 Food Microbiology 2 BOT 421 Fungal Physiology & Metabolism 3 BOT 461 Plant & Cell Biochemistry 3 MBIO 424 Epidemiology& Public Health Microbiology 3 BOT 462 Plant Physiology 3 BOT 463 Introductory Mushroom Growing Technology 3 (b) Postgraduate Courses Units BOT/MIC 701 M Sc. Research Project 6 BOT/MIC 702 Postgraduate Seminar & Literature Review 3 BOT/MIC 720 Advanced Mycology 4 BOT 721 Fungi in human environment 4 BOT 722 Fungal biotechnology & Applied mycology 4 BOT 760 Instrumentation techniques in plant physiology 4 BOT 761 Special topics in cell physiology 3 BOT 762 Environmental soil biology 3 BOT 763 Mushroom growing biotechnology 3 MBIO 806 Environmental Microbiology 3 (C) Project Supervision Undergraduate Students Supervised 47 Masters Project Students Supervised 20 Master students (Under Supervision) 5 Ph D under Supervision 4 (d) University and Departmental Duties: Departmental Examination coordinator (2008 - date) Coordinator of Final Year Departmental results (2003 – 2005) Coordinator, Final Year Research Projects (2004-2005) Member, Departmental Postgraduate Committee (2005 to date) Sub-Dean, Undergraduate, Faculty of Science (2004 - 2006) Coordinator, Faculty Registration of Students (2004 – 2006) Member, Faculty of Science Board of Studies (2002 – 2006) Member, Faculty of Science Curriculum Committee (2000 – 2005) Congregation Representative in University Senate (2001 – 2005,2008 - date) Member, Senate Committee on Center for External Studies (2001 - 2002) Member ,Senate Committee on Honorary Degrees & Fellowship (2001- 2002) 2 Member, Business Committee of University of Ibadan Senate (2002 - 2004) Member, Senate Development committee ( 2003-2004) Senate Representative on Court of Governor College of Medicines (2010-date) Congregation Representative in Senior staff Housing committee (2009-date ) Research (Completed) (a) Requirements for vegetative growth and fruit bodies production of Nigerian edible fungi Growth requirements of selected Nigerian edible fungi (Volvariella esculenta,V.bombycina,Tricholoma lobayensis,Lentinus squarro- sulus,Pleurotus tuber-regium,P.forida and Auricularia polyticha) were studied with the aim of obtaining optima physico-chemical conditions which could enhance their cultivation locally. Phytohormones such is Gibberrellic acid (GA3), 2, 4 dichlorophenoxy acetic acid (2,4D) and Naphthalene acetic acid (NAA) in varying concentrations were found to stimulate vegetative growth of the tested fungi. Likewise, simple organic, inorganic and complex carbon and nitrogen compounds as well as various mineral elements and vitamins enhanced the growth of these macro fungi. Various agro industrial wastes were found to enhanced different degree of fruit body production (b)Nutritional Values of Nigerian edible macro fungi and microorganisms affecting their cultures Attempts were made to investigate the food values and mineral element compositions of Nigerian macro fungi. The results of these studies showed that they are rich food containing protein, ethanol soluble sugars, glycogen and dietary fibres. These edible fungi were also found to contain essential mineral elements (Ca, Mg, K, S, Zn, Fe, S and P) needed for normal functioning and metabolism of the body. Besides, tissue culture of sporophores of these edible fungi is required to establish the mycelial starter cultures, which will act like “seeds” in mushroom cultivation. The weed microorganisms which usually attack this stage were isolated and characterized and, ways of preventing or controlling them were suggested. (c) Antimicrobial Profiles of Nigerian higher fungi This research which started in 2001 was aimed at obtaining information on medicinal properties of Nigerians mushrooms. The studies established that many Nigerian higher fungi growing in the wild possessed antimicrobial values. The consumption of these mushrooms will confer natural protections 3 against common disease causing microorganisms. The results of these investigations showed that Nigerian higher fungi are potential therapeutic drugs. (d) Nutritional evaluation, mycobiota and bacteria associated with ‘dodo Ikire ‘Dodo Ikire’ (plantain snack) is a local convenience food being consumed mostly by Yoruba people of South Western Nigeria. It is sold by mobile food vendors in market places or hawked around major road to gain attention of buyers. Evaluation of microflora of this locally sold convenience food and its proximate compositions were determined. The results as presented in paper 3 showed that ‘dodo Ikire’ is rich in sugars, lipids, protein and essential mineral elements. Medically important microorganisms were also isolated and characterized from the locally made ‘dodo Ikire’ and their implications on the health of consumers were outlined. B. Current Research Interest I. Biodegradation of Wastes Agro-industrial wastes constitute major problems to our environment. Waste disposal facilities are grossly inadequate in Nigeria. Some of these wastes are being disposed off by burning which further affect our environment adversely. In these studies, agro-industrial wastes such as paper wastes, sawdust, cotton wastes, rice straw, cassava peels and maize straw are being biodegraded by activities of microorganisms especially fungi. Various wastes were screen for the cultivation of edible mushrooms. The spent mushroom composts and other products of solid state fermentation will be utilized as animal feeds, organic fertilizers and other useful products. II. Studies on biomass and exo-polysaccharide production by Nigerian fungi Fungal biomass and exo-polysaccharrides have been found to be important for several purposes. (i) They are used as food or protein supplements (ii) They could be used as flavours (iii) They are used for wound treatments. The present studies are being embarked upon to determine physico-chemical properties which are required for the production of mycelial biomass and exo-polysaccharrides from Nigerian macro fungi most especially Nigerian mushrooms.The studies are presently on Pleurotus tuber- regium,P.ostreatus,Lentinus squar-rosulus and Volvariela bombycina This research is being supported by University of Ibadan Senate research grant III. Mycobiology and mycotoxins detection in Nigerian local foods A survey of fungi and aflatoxins they produced is being carried out on stored Nigerian food such as edible fungi ,fermented dried yam,cassava,sweet 4 potato & banana chips (‘gbodo’,’garri’ ,‘elubo ogede’and ‘elubo anomo’) onion,suya spices, 'aadun' ‘robo' and giant guava. These studies are carried out using postgraduate project students in conjunction with other staff of the University and other universities in Nigeria Publications (a) Books published 1. Fasidi, I. O.; Kadiri, M.; Jonathan, S. G.; Adenipekun, C. O. and Kuforiji, O. O. (2008). Cultivation of tropical Mushrooms.Ibadan University Press.(Nigeria) 2. Ajayi, E. J. and Jonathan, S. G. (2004). Plants pests and diseases-An Approach to control methods. J O S. Nig Ltd .152 pp (Nigeria) (b) Articles published in referred Journals 3. Fasidi, I. O. and S. G. Jonathan (1994). Growth requirements of Volvariella esculenta (Mass) Singer,. A Nigerian edible mushroom. Chemie Microbiologie. Technology Lebensmtel 16 (5/6) (151 – 155) (Germany ) 4. Jonathan, S. G. and Fasidi, I. O. (2000). Studies on requirements for vegetative growth of Lepiota procera(Fr.)S.F Gray,a Nigerian mushroom. Bulletin of Science Association of Nigeria 23:183-188 (Nigeria, 80%) 5. Jonathan, S. G. and Olowolafe, T. B. (2001). Studies on nutrient contents and microorganisms associated with ‘dodo Ikire’ a plantain snack from Western Nigeria.Nigerian Society for Experimental Biology Journal (NISEB). 1(1):27 – 30 (Nigeria ) 6. Jonathan, S. G. and Fasidi, I. O. (2001). Effect of carbon, nitrogen and mineral sources on growth of Psathyrella atroumbonata ,Pegler. A Nigerian edible mushroom. Food Chemistry. 72:479 -483(Britain ) 7. Jonathan, S. G. and Fasidi, I. O. (2001). Studies on Phytohormones, vitamins and mineral