Kipo, S.L., Ofori-Kwakye, K., Kuntworbe, N., Gbedema, S.Y. (2023).  Preliminary health risk assessment of two exudate gums as pharmaceutical excipients. Scientific African, Scientific African 20(6):e01648, DOI:10.1016/j.sciaf.2023.e01648

Boata, M., Johnson, R., Osei, Y.A., Boakye, Y.D., Amankwah, F.K., Owusu, F.W.A., Gbedema, S.Y., (2023). Efficacy of Disinfectants commonly used in some medical facilities in Kumasi, Ghana.  Journal of Science and Technology, 41(1): 65 – 81. https://www.ajol.info/index.php/just/article/view/246176

Sarpong C, Bayor MT, Johnson R, M Abbdullai, Boakye-Gyasi ME, Gbedema SY, Owusu FWA (2023). The Consumption of Energy Drink and Its Potential Effect on Sleep Patterns: A Case Study in the Kumasi Metropolis. Journal of Pharmaceutical Care, 11 (2): 93-101. https://jpc.tums.ac.ir/index.php/jpc/article/view/576

Konadu, E., Gbedem, S.Y., Boakye,Y.D., Osei-Mensah, B., Badu-Boateng, E. (2023). Burden of gastrointestinal parasitic infections: A 5-yearretrospective study at a tertiary hospital in Ghana. Int. J. Adv. Res. Biol. Sci. (2023). 10(4):xx-xx. DOI: 10.22192/ijarbs.

Abacha, Y.Z., Forkuo, A.D., Gbedema, S.Y., Mittal, N., Ottilie, S., Rocamora, F., Winzeler, E.A., van Schalkwyk, D.A., Kelly, J.M., Taylor, M.C/, Reader. J., Birkholtz, L.M. Lisgarten….. and Wright, C.W. (2022) Semi-Synthetic Analogues of Cryptolepine as a Potential Source of Sustainable Drugs for the Treatment of Malaria, Human African Trypanosomiasis, and Cancer. Frontiers in Pharmacology, 13: 1-11. Article 875647. doi: 10.3389/fphar.2022.875647

Osei Duah I.J, Tchiakpe M.P., Borquaye L.S, Amoah, K, Amankwah F.K.D, Kumah D.B, Ofori L.A., Danso?Appiah A,,8, Prempeh B.O, Gbedema S.Y, Munyaneza J, Amaning Danquah C, Akuffo K.O. (2022). Clinical characteristics of external bacterial ocular and periocular infections and their antimicrobial treatment patterns among a Ghanaian ophthalmic population. Scientific Report 12, 10264. https://doi.org/10.1038/s41598-022-14461-x

Boadi M., Gbedema, S.Y., Bayor, M.T., Boamah, E.V., Hayford, O. (2022) Antimicrobial Property of Microorganisms Isolated from Soil and Water – Body Samples in Ghana. Journal of Advances in Microbiology, 22(5): 38-48. https://www.sdiarticle5.com/review-history/85641

Amankwah F.K.D, Gbedema S.Y, Boakye Y.D, Bayor M.T, Boamah V.E (2022). Antimicrobial Potential of Extract from a Pseudomonas aeruginosa Isolate. Scientifica Vol. 2022 |Article ID 4230397 | https://doi.org/10.1155/2022/4230397.

Obeng A.W, Boakye D.Y, Agana T.A, Boamah V.E, Oppong-Kyekyeku J, Brobbey A.A, Adu F, Gbedema S.Y, Agyare C (2022). Antitrypanosomal and Anthelminthic Properties of Ethanol Extracts of Carica papaya Linn. and Ceiba pentandra (L) Gaertn. Journal of Chemistry. Volume 2022, Article ID 5251930, 11 pages https://doi.org/10.1155/2022/5251930

Korsah, S., Gbedema, S.Y.,  Bayor, M.T., Boakye-Gyasi, M.E.,  Owusu, F.W.A., Forkuo, A.D. (2021) In vivo antimalarial activity of Polyalthia longifolia (Annonaceae) leaf extract and assessment of its formulated oral dosage forms. Evidence-Based Complementary and Alternative Medicine, 2021: 1 – 8.  https://doi.org/10.1155/2021/6519346.

Bayor, M.T., Mbabila, B.D., Osei, Y.A., Gbedema, S.Y., Boakye-Gyasi, M.El. (2020) Assessment of the physico-chemical and microbial quality of selected extemporaneous paediatric oral formulations frequently prepared at Komfo Anokye Teaching Hospital in Kumasi. Journal of Science and Technology, 38(1,2&2): 45 – 55

Thomford, K. P., Mensah, M.L.K., Dickson, R.A., Thomford, A.K., Appiah, A.A., Gbedema, S.Y. (2019). Appraisal of the constituent plant materials in a Ghanaian antifungal herbal product; An in vitro interactive combination analysis and a pilot clinical study to determine efficacy. International Journal of Phytomedicines, 10(4): 219-225.

Yir-Erong, B., Bayor, MT., Ayensu, I., Gbedema, SY and Boateng, J. (2019). Oral thin films as a remedy for noncompliance in pediatric and geriatric patients. Therapeutic Delivery, https://doi.org/10.4155/tde-2019-0032.

Yir-Erong, B., Bayor, MT, Ayensu, I., Gbedema, SY and Boateng, J. (2018). The Challenges and Knowledge Gaps in Malaria Therapy: A Stakeholder Approach to Improving Oral Quinine Use in the Treatment of Childhood Malaria in Ghana. Journal of Pharmaceutics, 2018, 1784645. doi:10.1155/2018/1784645

Ameade E.P.K., Mohammed I., Ibrahim H., Habib R. and Gbedema S.Y. (2018). Concurrent Use of Herbal and Orthodox Medicines among Residents of Tamale, Northern Ghana, Who Patronize Hospitals and Herbal Clinics, Evidence-Based Complementary and Alternative Medicine, vol. 2018, Article ID 1289125, 8 pages, doi:10.1155/2018/1289125 https://www.hindawi.com/journals/ecam/aip/1289125/.

Ameade E.P.K., Baba M.M., Iddrisu N.U., Musah A.A., Gbedema S.Y. (2018). Herbal Pharmacovigilance: Are Ghanaian Herbal Medicine Practitioners Equipped Enough to Assist in Monitoring the Safety of Herbal Medicines? - A Survey in Tamale, Ghana. Chronicles of Complementary, Alternative and Integrative Medicine: CCAIM-101.

Boamah VE, Agyare C, Odoi H, Adu F, Gbedema SY, Dalsgaard A (2017). Prevalence and antibiotic resistance of coagulase-negative Staphylococci isolated from poultry farms in three regions of Ghana. Infection and Drug Resistance, Vol 10, 175–183.

Gbedema SY, Bayor MT, Annan Kofi, Wright CW (2015).  Clerodane diterpenes from Polyalthia longifolia (Sonn) Thw. var. pendula: Potential antimalarial agents for drug resistant Plasmodium falciparum infection. Journal of Ethnopharmacology. 169: 176-182. doi:10.1016/j.jep.2015.04.014.

Abudu A, Gbedema SY, Wemegar DD, Tay SCK (2015). Wuchereria bancrofti antigenaemia among school children: A case study of four communities in the Kassena-Nankana East District of the Upper East Region of Ghana. International Journal of medicine and Medical Sciences, 7(3): 67 – 74.

Tay SCK, Badu K, Mensah AA, Gbedema SY (2015). The prevalence of malaria among HIV seropositive individuals and the impact of the co- infection on their hemoglobin levels. Annals of Clinical Microbiology and Antimicrobials, 14:10, DOI: 10.1186/s12941-015-0064-6.

Sola I, Castella S, Viayna E, Galdeano C, Taylor MC, Gbedema SY, Pérez B, Clos MV, Jones DC, Fairlamb AH, Wright CW, Kelly JM, Muñoz-Torrero D. (2015). Synthesis, biological profiling and mechanistic studies of 4-aminoquinoline-based heterodimeric compounds with dual trypanocidal-antiplasmodial activity.  Bioorganic & Medicinal Chemistry, 23(16): 5156 – 5167.

Sola I, Artigas A, Taylor MC, Gbedema SY, Pérez B, Wright CW, Kelly JM, Muñoz-Torrero D (2014). Synthesis and antiprotozoal activity of oligomethylene- and p-phenylene-bis(methylene)-linked bis(+)-huprines. Bioorganic & Medicinal Chemistry Letters. 24: 5435 – 5438. 

Saana SBBM, Adu F, Gbedema SY and Duredoh FG (2014). Antibiotic susceptibility patterns of Salmonella typhi among patients in three hospitals in Kumasi, Ghana. International Journal of Pharmaceutical Sciences and Research, 5(3): 855 – 860.                                     

Nicholas Agyepong N, Agyare C, Adarkwa-Yiadom M and Gbedema SY (2014). Phytochemical investigation and anti-microbial activity of Clausena anisata (Willd), Hook. African Journal of Traditional, Complement and Alternative Medicine, 11(3):200 – 209.

Koffuor GA, Dickson R, Gbedema SY, Ekuadzi E, Dapaah G, Otoo LF (2014). The immunostimulatory and antimicrobial properties of two herbal decoctions used in the management of HIV/AIDS in Ghana.  African Journal of Traditional, Complementary and Alternative Medicine, 11(3): 166 – 172.

Saana SBBM, Adu F, Agyare C, Gbedema SY, Boamah VE, George DF (2013). Antibiotic resistance patterns of strains of Staphylococcus aureus isolated from patients in three hospitals in Kumasi, Ghana. Journal of Bacteriology Research, 5(3): 35 – 40.

Tay SCK, Kye-Duodo G, Gbedema SY (2013). River Wiwi: A source of Schistosoma haematobium infection in school children in Kumasi, an urban African setting. African Journal of Microbiology Research, 7(20): 2213 – 2220.  

Tawiah AA, Gbedema SY, Adu F, Boamah VE, Annan K (2012). Antibiotic producing microorganisms from River Wiwi, Lake Bosomtwe and the Gulf of Guinea at Doakor Sea Beach, Ghana. BMC Microbiology, 12: 234, 1 – 19. doi:10.1186/1471-2180-12-234.

George DF, Gbedema SY, Agyare C, Adu F, Boamah VE, Tawiah AA, Bayaa-Martin-Saana SB (2012). Antibiotic Resistance Patterns of Escherichia coli Isolates from Hospitals in Kumasi, Ghana,” ISRN Microbiology, vol. 2012: 1 – 5.  doi:10.5402/2012/658470.

Annan K, Sarpong K, Asare C, Dickson R, Amponsah KI,  Gyan B, Ofori M, Gbedema SY (2012). In vitro anti-plasmodial activity of three herbal remedies for malaria in Ghana: Adenia cissampeloides (Planch.) Harms., Terminalia ivorensis A. Chev, and Elaeis guineensis Jacq. Pharmacognosy Research, 4(4): 225 – 229. doi:  10.4103/0974-8490.102270.

Adu F, Gbedema S.Y, Akanwariwiak W. G, Annan K, Boamah V.E (2011). The Effects of Acanthospermum hispidum extract on the antibacterial activity of amoxicillin and ciprofloxacin. Hygeia Journal of Drugs and Medicines, 3 (1): 2011, 58- 63.

Tay SCK, Amankwa R, Gbedema SY (2011). Prevalence of Schistosoma haematobium infection in Ghana: A Retrospective case study in Kumasi. International Journal of Parasitology Research, 3(2): 48 – 52.

Tay SCK, Dankwa K, Gbedema SY, Sittie AA (2011). Antimalarial Activity of Cryptolepis sanguinolenta Based Herbal Capsules in mice. International Research Journal of Pharmacy, 2(5): 127 – 131.   

Tay SCK, Dankwa K, Gbedema SY, Sittie AA (2011). In vivo Antimalarial Activity Evaluation of Two Cryptolepis sanguinolenta Based Herbal Decoctions. Inventi Impact: Ethnopharmacology, (1): 68 – 71.

Tay SCK, Gbedema SY, Gyampomah TK (2011). High prevalence of Hookworm infection and apparent absence of Ascaris lumbricoides: A case study at the Komfo Anokye Teaching Hospital in Ghana. International Journal of Pharmaceutical Sciences and Research, 2(5): 1217 – 1224.

Boamah V.E, Gbedema SY, Adu F, Ofori-Kwakye K (2011). Microbial Quality of Household Water Sources and Incidence of Diarrhoea in three Peri-Urban Communities in Kumasi, Ghana. Journal of Pharmaceutical Sciences and Research, 3(3): 1087 – 1092.

Tay SCK, Gbedema SY, Gyampomah TK (2011). Accuracy of diagnosis of intestinal helminth parasites in a reference diagnostic laboratory in Ghana. International Journal of Parasitology Research, 3(1): 12 – 17. 

Adu F, Gbedema SY, Brown P, Annan K, Boamah EV (2011). Antibacterial and free radical scavenging activity of Duranta plumieri, Linn. International Journal of Pharmaceutical Sciences and Research, 2(2): 382 – 387.

Bayor MT, Johnson R, Gbedema SY (2011). The Oral Capsule - The most appropriate dosage form for Croton membranaceus, International Journal of Pharmaceutical Sciences and Research, 2(1): 55 – 62.

Feglo PK, Acheampong DO, Gbedema SY (2010). Prevalence and antibiogram of Klebsiella species recovered from clinical samples at the Komfo Anokye teaching hospital in Ghana. Journal of Clinical Research Letters, 1(2): 04 – 08.

Feglo PK, Gbedema SY, Quay SNA, Adu-Sarkodie Y, Opoku-Okrah C (2010). Occurrence, species distribution and antibiotic resistance of Proteus isolates: A case study at the Komfo Anokye Teaching Hospital (KATH) in Ghana.
International Journal of Pharma Sciences and Research, 1(9): 347 – 352. 

Gbedema SY, Adu F, Bayor MT, Annan K, Boateng JS (2010). Enhancement of antibacterial activity of amoxicillin by some Ghanaian medicinal plant extracts, International Journal of Pharmaceutical Sciences and Research, 1(11): 145 – 152.

Gbedema SY, Adu F, Bayor MT, Annan K (2010). Modulation effect of Herbal extracts on the antibacterial activity of Tetracycline, International Journal of Contemporary Research and Review, 1(4): 1 – 5.  

Gbedema SY, Kisseih E, Adu F, Annan K, Woode E (2010). Wound healing properties and kill kinetics of Clerodendron splendens G. Don, a Ghanaian wound healing plant, Pharmacognosy Research, 2 (2); 63 – 68. 

Gbedema SY, Adu F, Bayor MT, Arhin-Sam VE, Annan K (2010). In vitro Antimicrobial study of the efficacy of a toothpaste formulated from Garcinia kola stem wood extract, International Journal of Pharmacy and Pharmaceutical Sciences, 2 (2); 98 – 101. 

Annan K Gbedema S and Adu F (2009). Antibacterial and Radical Scavenging Activity of Fatty Acids from Paulinia pinnata L, Pharmacognosy Magazine, 5 (19); 119 – 123.

Annan K, Adu F. and Gbedema SY. (2009). Friedelin: A Bacterial Resistance Modulator from Paullinia pinnata L., Journal of Science and Technology, 29 (1); 152 – 159.

Adu F, Gbedema S. Y., Annan K. (2009). Antimicrobial and Resistance Modulatory Activities of Corynanthe pachyceras, Pharmacognosy Review, 1 (5); 280 – 284.

Bayor M.T. Gbedema S Y and Annan K (2009). The antimicrobial activity of Croton membranaceus, a species used in formulations for measles in Ghana. Journal of Pharmacognosy & Phytotherapy, 1 (4): 047- 051. 

Fleischer T.C., Mensah M. L. K., Mensah A. Y., Komlaga G., Gbedema S.Y., Skaltsa H. (2008). Antimicrobial Activity of Essential Oils of Xylopia aethiopica, African Journal of Traditional, Complementary and Alternative Medicine, 5 (4): 391 – 340.  

Conference Papers

Duah I.J.O, Tchiakpe M.P., Borquaye L.S, Amoah, K, Amankwah F.K.D, Kumah D.B, Ofori L.A., Danso?Appiah A,,8, Prempeh B.O, Gbedema S.Y, Munyaneza J, Amaning Danquah C, Akuffo K.O. (2022). Bacteria isolates in external ocular and periocular infections and antimicrobial treatment patterns among Ghanaian ophthalmic patients: a multicenter study. Ophthalmology & Visual Investigative Science, 63 (7): 3557–A0444-3557–A0444

Amiteye D, Dayie NTK, Gbedema SY, Boamah VE, Adu F, Bayor MT (2019). Isolation of antibiotic producing microorganisms from some water bodies withnin eastern and Greater Accra Regions of Ghana. bioRxiv preprint first posted online Jul.8, 2019.

Gbedema SY, Bayor MT, Boadi M (2017) Antimicrobial property of microorganisms isolated from soil and water-body samples in Ghana. Abstract and oral presentationat the Faculty of Pharmacy Graduate Students‘ week celebration. KNUST March 2017, Page 40.

Boadi M, Gbedema SY, Adu F, Agyare C, Boamah VE, Bayor VE (2016). Antimicrobial property of microorganisms isolated from soil in Ejisu, Kakum river and the sea in Cape Coast Municipality. Poster presentation at the Conference of the Pharmaceutical Society of Ghana (PSGH), Sunyani, Ghana. August 2016, page 59.

Book Publications

Gbedema SY (2015). Polyalthia Longifolia (Sonn) Thw. var. pendula: A potent Malaria Herb. ISBN 978-3-659-77001-2, Lambert Academic Publishing, Germany. 308 pages.

Thesis and Dissertations

Gbedema SY (2014). Antiplasmodial evaluation of extracts of selected Ghanaian medicinal plants and other bioactivities of isolates of Polyalthia longifolia var. pendula (Annonaceae). Ph.D Thesis, Department of Pharmaceutics, faculty of Pharmacy and Pharmaceutical sciences, College of Health Sciences, Kwame Nkrumah University of  Science and technology, Kumasi – Ghana. Pages 281

Gbedema SY (2002). Antimicrobial properties of extracts of Garcinia kola stem wood and characterization of the isolated active hydroxybiflavanoid constituent. M.Phil Thesis, Department of Pharmaceutics, faculty of Pharmacy and Pharmaceutical sciences, College of Health Sciences, Kwame Nkrumah University of  Science and technology, Kumasi – Ghana. Pages 110.

Gbedema SY (1998). Preliminary antimicrobial screening of Rauwolfia vomitoria, Heliotropium indicum and Lawsonia inermis. B.Pharm Research Project Report. Department of Pharmaceutics, faculty of Pharmacy and Pharmaceutical sciences, College of Health Sciences, Kwame Nkrumah University of  Science and technology, Kumasi – Ghana. Pages 78.

Oral and Poster Presentations at Conferences

 Boadi M. and Gbedema S. Y. (2015). Antibacterial activity of microorganisms isolated from the Kakum River in Ghana. Abstract and oral presentation at The 6^th Annual Scientific Conference of the College of Health Sciences, KNUST, Kumasi. S3B1 (Abstract) Page 68. 27^th – 28^th August 2015. Conference Theme: Non-communicable diseases: The significance of nutrition.

Gbedema S. Y., Marcel T. Bayor, Kofi Annan, Colin W. Wright (2013). Phytotherapies for multidrug-resistant Plasmodium falciparum infection in Ghana.  Abstract and oral presentation at the 6^th MIM Pan-African Malaria Conference; held at ehe International Convention Centre, Durban, South Africa, 6^th – 11^th October 2013. P263 (Abstract), page 318. Conference Theme: Moving towards malaria elimination: Investing in research and control.

Gbedema SY, Wright CW, Bayor MT, Annan K (2013). An emerging antimalarial herb in Ghana: Polyalthia longifolia var. pendula. Poster presentation at the Royal Society of Chemistry, Northern England Division Conference. University of Huddersfield, Quayside, Queensgate, Huddersfield, 4^th March 2013. Conference Theme: Advancing the chemical sciences.

Tawiah A. A, Gbedema S.Y., Francis Adu, Kofi Annan (2010). Screening of aquatic microorganisms for natural products with antibacterial activity. Abstract and oral presentation at the 4^th Scientific Meeting of the Western Africa Network of Natural Products Research Scientists (WANNPRES) Conference in Ouagadougou, Burkina Faso. 1^st – 4^th August, 2010. Book of Abstracts, No B14, page 28.

Stephen Y. Gbedema, Francis Adu, Kofi Annan (2010). The effect of Myristica fragrans leaf on the antibacterial activities of ciprofloxacin and amoxicillin. Abstract and oral presentation at the 4^th Scientific Meeting of the Western Africa Network of Natural Products Research Scientists (WANNPRES) Conference in Ouagadougou, Burkina Faso. 1^st – 4^th August, 2010. Book of Abstracts, No B116, page 29.

Stephen Y. Gbedema, Francis Adu, Kofi Annan (2010). The effect of Acanthospermum hispidum on the antimicrobial activities of some antibiotics. Abstract and oral presentation at the 4^th Scientific Meeting of the Western Africa Network of Natural Products Research Scientists (WANNPRES) Conference in Ouagadougou, Burkina Faso. 1^st – 4^th August, 2010. Book of Abstracts, No B15, page 29.

Adelaide A. Tawiah, Stephen Y. Gbedema, Francis Adu, Kofi Annan (2010). Antibacterial activity of microorganisms isolated from water bodies in Ghana. Abstract and oral presentation at WANNPRES Ghana Chapter Symposium on Natural Products Research, KNUST, Kumasi.  25^th March, 2010. Book of Abstracts, No A015, Page 24.

Gbedema SY, Adu F, Sawer IK, Arhin-Sam VE, Bayor MT, Annan K. (2009). In vitro study to assess the antimicrobial activity of toothpaste formulated from Garcinia kola stem wood extract. Abstract and oral presentation at the 2^nd Scientific Conference of the College of Health Sciences. KNUST, Kumasi. “10^th – 11^th September, 2009.  Conference Theme: Life Style and Non-Communicable Diseases (Diabetes, Obesity, Hypertension and Cancer), Book of Abstract No. FP17, page 42.

Adu F, Brown P, Gbedema SY, Annan K, Abu M, Arhin-Sam VE (2009). Antimicrobial activity and Phytochemical screening of the leaves of Duranta plumieri. Abstract and oral presentation at the 2^nd Scientific Conference of the College of Health Sciences. KNUST, Kumasi. “10^th – 11^th September, 2009.  Conference Theme: Life Style and Non-Communicable Diseases (Diabetes, Obesity, Hypertension and Cancer), Book of Abstract No. F27, pages 48-49.

Annan K, Adu F. and Gbedema SY (2009). Friedelin: A bacterial Resistance Modulator from Paulinia pinnata L. Abstract and Poster presented at the 10^th Commonwealth Pharmacists Association. Cultural Centre, Accra, Ghana, 5^th – 9^th August, 2009. Conference. Theme: Managing Threats and Crisis: The Vital Role of Pharmacy in an Unstable World.

Book of Abstracts, No. PS 051, page 118.

Boamah V.E, Gbedema SY, Adu F, Ofori-Kwakye K (2009). Groundwater Quality in Some Communities in Kumasi, Ghana and the Effectiveness of ten commonly used Antibiotics against Isolated microorganisms.  Abstract and Poster presented at the 10^th Commonwealth Pharmacists Association. Cultural Centre, Accra, Ghana, 5^th – 9^th August, 2009. Conference Theme: Managing Threats and Crisis: The Vital Role of Pharmacy in an unstable World.  Book of Abstracts, No. PS 047, page 114.

Adu F, Gbedema SY, Annan K (2008). Antimicrobial and Wound healing Properties of Clerodendron splendens G. Don, Abstract and Poster presentation at the 1^st Scientific Conference of the College of Health Sciences, KNUST.  Kumasi, 28^th – 29^th August, 2008.  Conference Theme: Addressing the Ghanaian Health Needs; Education and Research on HIV/AIDS, Tuberculosis and Malaria.  Book of Abstract, No. C17, pages 76-77.

Gbedema SY, Adu F, Annan K, Fleischer TC (2008). Antimicrobial properties of some Ghanaian Medicinal plants. Abstract and Poster presentation at the 1^st Scientific Conference of the College of Health Sciences, KNUST.  Kumasi, 28^th – 29^th August, 2008.  Conference Theme: Addressing the Ghanaian Health Needs; Education and Research on HIV/AIDS, Tuberculosis and Malaria.  Book of Abstract, No. C18, pages 77- 78.

Adu F, Gbedema SY, Annan K (2008). In vitro antimicrobial efficacy of some brands of amoxicillin capsules on the Ghanaian market. Abstract and Poster presentation at the 1^st Scientific Conference of the College of Health Sciences, KNUST, Kumasi, 28^th – 29^th August, 2008.  Conference Theme: Addressing the Ghanaian Health Needs; Education and Research on HIV/AIDS, Tuberculosis and Malaria.  Book of Abstract, No. 20 pages 78-79.

Adu F, Gbedema SY, Annan K (2008). The Antimicrobial Activity of the stem bark, leaves, roots and wood extracts of Corynanthe pachyceras. Abstract and Poster presentation at the 1^st Scientific Conference of the College of Health Sciences, KNUST, Kumasi, 28^th – 29^th August, 2008.  Conference Theme: Addressing the Ghanaian Health Needs; Education and Research on HIV/AIDS, Tuberculosis and Malaria.  Book of Abstract, No. C7, page 56.

Gbedema SY, Sawer IK, Fleischer TC, (2005). B13. Isolation and characterization of antimicrobially active hydroxybiflavanoid constituent from Garcinia kola stem wood (chewing stick). Proceedings of the WANNPRES Conference held in Accra, Ghana on 15^th – 20^th August 2004. African Journal of Traditional, Complementary and Alternative Medicine, 2(2): 195-196.