Prof. Dr. Andrew Rowland Opoku
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Prof. Dr. Andrew Rowland Opoku

Research fellow/ Professor Emeritus
University of Zululand, South Africa

Highest Degree
Ph.D. in Biotechnology from University of Manchester, UK

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Area of Interest:

Pharmacology and Toxicology
100%
Phytotherapy Research
62%
Microbiology Techniques
90%
Biochemical Toxicology
75%
Alternative Medicine
55%

Research Publications in Numbers

Books
0
Chapters
0
Articles
0
Abstracts
0

Selected Publications

  1. Soyingbe, O.S., T.J. Makhafola, B.P. Mahlobo, H.M. Salahdeen, O.A. Lawal and A.R. Opoku, 2017. Antiasthma activity of Eucalyptus grandis essential oil and its main constituent: Vasorelaxant effect on aortic smooth muscle isolated from nomotensive rats. J. Exp. Applied Anim. Sci., 2: 211-222.
  2. Ogunyinka, B.I., B.E. Oyinloye, F.O. Osunsanmi, A.R. Opoku and A.P. Kappo, 2017. Protective effects of Parkia biglobosa protein isolate on streptozotocin-induced hepatic damage and oxidative stress in diabetic male rats. Molecules, Vol. 22. 10.3390/molecules22101654.
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  3. Ogunyinka, B.I., B.E. Oyinloye, F.O. Osunsanmi, A.P. Kappo and A.R. Opoku, 2017. Comparative study of proximate, functional mineral and anti-nutrient composition of fermented, defatted and protein isolate of Parkia biglobosa seeds. Food Sci. Nutr., 5: 139-147.
  4. Mthembu, W., D. Penduka, R. Mosa, B. Shoba, A. Zobolo and A. Opoku, 2017. The bacterial profiles of wounds in diabetic patients hospitalized in Northern KwaZulu-Natal, South Africa. Afr. J. Clin. Exp. Microbiol., 18: 186-197.
  5. Mabhida, S.E., R.A. Mosa, D. Penduka, F.O. Osunsanmi, P.V. Dludia, T.G. Djavora and A.R. Opoku, 2017. A lanosteryl triterpene from Protorhus longifolia improves glucose tolerance and pancreatic beta cell ultrastructure in type 2 diabetic rats. Molecules, Vol. 22. 10.3390/molecules22081252.
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  6. Lawal, O.A., I.A. Ogunwande, M.S. Owolabi, K.O. Amisu and A.R. Opoku, 2017. The Rhizome Oils of Cyperus distans and Cyperus rotundus (Cyperaceae) and Their Antimicrobial and Insecticidal Activities. In: Advances in Environmental Research, Daniels, J.A. (Ed.)., Nova Science Publisher, New York, pp: 225-247.
  7. Lawal, O.A., I.A. Ogunwande, F.O. Osunsanmi, A.R. Opoku and A.O. Oyedeji, 2017. Croton gratissimus leaf essential oil composition, antibacterial, anti-platelet aggregation and cytotoxic activities. J. Herbs Species Med. Plants, 23: 77-87.
  8. Ikhile, M.I., F.O. Osunsanmi, A.R. Opoku and J.C. Ngila, 2017. Antiplatelet aggregation activity of some ferrocenylphenylimine compounds. J. Chin. Pharm., 26: 460-464.
  9. Cele, N.D., N.F. Sangweni, R.A. Mosa, D. Penduka and G.G. Lazarus et al., 2017. Testicular dysfunction ameliorative effect of the methanolic roots extracts of Maytenus procumbens and Ozoroa paniculosa. Evid.-Based Complement. Altern. Med., Vol. 2017. 10.1155/2017/8204816.
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  10. Osunsanmi, F.O., B.E. Oyinloye, R.A. Mosa, M.I. Ikhile, J.C. Ngila, F.O. Shode and M. Singh et al., 2016. Anti-platelet aggregation of mixtures of betulinic oleanolic and maslinic acids and derivatives from medicinal plants. Trop. J. Pharm. Res., 15: 1613-1619.
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  11. Ogunyinka, B.I., B.E. Oyinloye, F.O. Osunsanmi, A.R. Opoku and A.P. Kappo, 2016. Modulatory influence of Parkia biglobosa protein isolate on testosterone and biomarkers of oxidative stress in brain and testes of streptozotocin-induced diabetic male rats. Int. J. Physiol. Pathophysiol. Pharmacol., 8: 78-86.
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  12. Mosa, R.A., N.B. Hlophe, N.T. Ngema, D. Penduka, O.A. Lawal and A.R. Opoku, 2016. Cardioprotective potential of a lanosteryl triterpene from Protorhus longifolia. Pharm. Biol., 54: 3244-3248.
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  13. Lawal, O.A., I.A. Ogunwande, H.M.M. Mzimela, A.R. Opoku and A.O. Oyedeji, 2016. Senecio pterophorus DC. (Asteraceae) essential oils: Antibacterial, antioxidant, cytotoxic and larvicidal activities. Br. J. Pharm. Res., 12: 1-11.
  14. Lawal, O.A., I.A. Ogunwande, A.R. Opoku and A.O. Oyedeji, 2016. Zierone: A sesquiterpene ketone from the essential oil of Cyperus distans L. (Cyperaceae). Adv. Res., 6: 1-6.
  15. Lawal, O.A., I.A. Ogunwande, A.R. Opoku and A.O. Oyedeji, 2016. Chemical composition and antibacterial activity of essential oils from the rhizomes of Cyperus papyrus L. grown in South Africa. Bol. Latinoam. Caribe Plant Med. Aromat., 15: 137-144.
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  16. Fadipe, V.O., J.A.Y. Rojas, E.S. Areola, J.J. Badillo, H.H. Abdallah and A.R. Opoku, 2016. Synthesis, QSAR model study and antimicrobial evaluation of esters and thioester derivatives of isonicotinic acid on the different strains of Mycobacterium tuberculosis. J. Anal. Pharm. Res., Vol. 2. 10.15406/japlr.2016.02.00037.
    CrossRef  |  
  17. Dunpall, R., A.R. Opoku and N. Revaprasadu, 2016. Development and characterization of MCF7 mammary carcinoma xenografts in a non-immunocompromised rat model. Trop. J. Pharm. Res., 15: 2085-2091.
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  18. Wusu, D.A., M.I. Kazeem, O.A. Lawal and A.R. Opoku, 2015. Antidiabetic effects of some tropical fruit extracts in fructose induced insulin resistant wistar rats. Br. J. Pharm. Res., 7: 230-235.
  19. Sewanu, S.O., M.C. Bongekile, O.O. Folusho, L.O. Adejumobi and O.A. Rowland, 2015. Antimicrobial and efflux pumps inhibitory activities of Eucalyptus grandis essential oil against respiratory tract infectious bacteria. J. Med. Plants Res., 9: 343-348.
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  20. Penduka, D., N.P. Gasa, M.S. Hlongwane, R.A. Mosa, F.O. Osunsanmi and A.R. Opoku, 2015. The antibacterial activities of some plant-derived triterpenes. Afr. J. Traditional Complement. Altern. Med., 12: 180-188.
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  21. Osunsanmi, F.O., O.S. Soyingbe, I.B. Ogunyinka, R.A. Mosa and M.I. Ikhile et al., 2015. Antiplatelet aggregation and cytotoxic activity of betulinic acid and its acetyl derivative from Melaleuca bracteata. J. Med. Plant Res., 9: 647-654.
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  22. Nanyonga, S.K., A.R. Opoku, F.B. Lewu and A.O. Oyedeji, 2015. Insecticidal activities and chemical composition of the essential oil from Tarchonanthus camphoratus (L.), leaves against Sitophilus zeamais Motschulsky and Sitophilus oryzae (L.). Afr. J. Agric. Res., 10: 2032-2037.
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  23. Mosa, R.A., T. Ndwandwe, N.F. Cele and A.R. Opoku, 2015. Anticoagulant and anti-inflammatory activity of a triterpene from Protorhus longifolia stem bark. J. Med. Plants Res., 9: 613-619.
    CrossRef  |  
  24. Mosa, R.A., N.D. Cele, S.E. Mabhida, S.C. Shabalala, D. Penduka and A.R. Opoku, 2015. In vivo antihyperglycemic activity of a lanosteryl triterpene from Protorhus longifolia. Molecules, 20: 13374-13383.
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  25. Momin, MI.K., D. Ramjugernath, R.A. Mosa, A.R. Opoku and N.A. Koorbanally, 2015. Synthesis and In vitro antiplatelet aggregation screening of novel fluorinated diethyl-2-(benzylthio)-2,3-dihydro-1H-imidazole-4,5-dicarboxylate derivatives. Med. Chem. Res., 24: 2075-2084.
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  26. Mazibuko, S.E., E. Joubert, R. Johnson, J. Louw, A.R. Opoku and C.J. Muller, 2015. Aspalathin improves glucose and lipid metabolism in 3T3‐L1 adipocytes exposed to palmitate. Mol. Nutr. Food Res., 59: 2199-2208.
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  27. Lawal, O.A., K.O. Amisu, S.K. Akinyemi, A.A. Sanni, M.B. Simelane, R.A. Mosa and A.R. Opoku, 2015. In vitro antibacterial activity of aqueous extracts of Bidens pilosa L. (Asteraceae) from Nigeria Br. Microbiol. Res. J., 8: 525-531.
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  28. Lawal, O.A., I.A. Ogunwande, A.E. Ibirogba, O.M. Layode and A.R. Opoku, 2015. Chemical constituents of essential oils from Catharanthus roseus (L.) G. Don grown in Nigeria. J. Essent. Oil Bear. Plants, 18: 57-63.
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  29. Lawal, O.A., I.A. Ogunwande, A.A. Kasali, A.R. Opoku and A.O. Oyedeji, 2015. Chemical composition, antibacterial and cytotoxic activities of essential oil from the leaves of Helichrysum odoratissimum grown in South Africa. J. Essent. Oil Bear. Plants, 18: 236-241.
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  30. Lawal, O.A., I.A. Ogunwande and A.R. Opoku, 2015. Volatile constituents from the leaves of Pachira aquatic Aubl grown in Nigeria. Int. Res. J. Pure Applied Chem., 7: 49-53.
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  31. Lawal, O.A., I.A. Ogunwande and A.R. Opoku, 2015. Chemical composition of essential oils of Plumeria rubra L. grown in Nigeria. Eur. J. Med. Plants, 6: 55-61.
  32. Lawal, O.A., A.R. Opoku and I.A. Ogunwande, 2015. Phytoconstituents and insecticidal activity of different solvent leaf extracts of Chromolaena odorata L., against Sitophilus zeamais (Coleoptera: Curculionidae). Eur. J. Med. Plants, 5: 237-247.
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  33. Lawal, O.A., A.B. Ojekale, O.S. Oladimeji, T.S. Osinaike and A.A. Sanni et al., 2015. In vitro antioxidant activity, total phenolic and total flavonoid contents of essential oils of three Cyperus species (Cyperaceae). Br. J. Pharm. Res., 7: 52-62.
  34. Lawal, O.A., A.A. Kasali, A.R. Opoku, A.B. Ojekale, O.S. Oladimeji and S. Bakare, 2015. Chemical composition and antibacterial activity of essential oil from the leaves of Aframomum melegueta (Roscoe) K. Schum from Nigeria. J. Essent. Oil Bear. Plants, 18: 222-229.
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  35. Fadipe, V.O., N.I. Mongalo and A.R. Opoku, 2015. In vitro evaluation of the comprehensive antimicrobial and antioxidant properties of Curtisia dentate (Burm. F) CA Sm: Toxicological effect on the human embryonic kidney (HEK293) and human hepatocellular carcinoma (HepG2) cell lines. EXCLI J., 14: 971-983.
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  36. Penduka, D., R. Mosa, M. Simelane, A. Basson, A. Okoh and A. Opoku, 2014. Evaluation of the anti-Listeria potentials of some plant-derived triterpenes. Ann. Clin. Microbiol. Antimicrob., Vol. 13. 10.1186/s12941-014-0037-1.
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  37. Mosa, R.A., M.L. Nhleko, T.V. Dladla and A.R. Opoku, 2014. Antibacterial activity of two triterpenes from stem bark of Protorhus longifolia. J. Med. Plants Res., 8: 686-702.
    CrossRef  |  
  38. Mosa, R.A., J.J. Naidoo, F.S. Nkomo, S.E. Mazibuko, C.J.F. Muller and A.R. Opoku, 2014. In vitro antihyperlipidemic potential of triterpenes from stem bark of Protorhus longifolia. Planta Med., 80: 1685-1691.
    CrossRef  |  PubMed  |  Direct Link  |  
  39. McEwan, R., F.N. Shangase, T. Djarova and A.R. Opoku, 2014. Effect of three processing methods on some nutrient and anti-nutritional factor constituent of Colocasia esculenta (Amadumbe). Afr. J. Food Sci., 8: 287-292.
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  40. Machaba, K.E., S.Z.Z. Cobongela, R.A. Mosa, L.A. Oladipupo, T.G. Djarova and A.R. Opoku, 2014. In vivo anti-hyperlipidemic activity of the triterpene from the stem bark of Protorhus longifolia (Benrh) Engl. Lipids Health Dis., Vol. 13. .
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  41. Lawal, O.A., I.A. Ogunwande, O.F. Olorunloba and A.R. Opoku, 2014. The essential oils of Chrysanthemum morifolium Ramat from Nigeria. Am. J. Essent. Oils Natural Prod., 2: 63-66.
  42. Lawal, O.A., I.A. Ogunwande, O.E. Omikorede, M.S. Owolabi and F.F. Olorunsola et al., 2014. Chemical composition and antimicrobial activity of the essential oil of Ocimum kilimandscharicum (R. Br.) Guerke: A new chemotype. Am. J. Essential Oils Nat. Prod., 2: 41-46.
  43. Lawal, O.A., I.A. Ogunwande, M.S. Owolabi, A.O. Giwa-Ajeniya and A.A. Kasali et al., 2014. Comparative analysis of essential oils of Citrus aurantifolia Swingle and Citrus reticulata Blanco, from two different localities of Lagos State, Nigeria. Am. J. Essent Oils Nat. Prod., 2: 8-12.
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  44. Lawal, O.A., I.A. Ogunwande, C.A. Bullem, O.T. Taiwo and A.R. Opoku, 2014. Essential oil Compositions and In vitro Biological Activities of Three Syzygium Species from Nigeria. In: New Developments in Terpenes Research (Chemistry Research and Applications). Hu, J. (Ed.)., 1st Edn., Nova Science Publisher, Inc., New York,, pp: 93-112.
  45. Lawal, O.A., I.A. Ogunwande, A.R. Opoku, A.A. Kasali and A.O. Oyedeji, 2014. Chemical composition and antibacterial activity of essential oil of Warbugia salutaris (Bertol f.). Chiov from South Africa. J. Biol. Active Prod. Nature, 4: 272-277.
  46. Lawal, O.A., I.A. Ogunwande, A.F. Salvador, A.A. Sanni and A.R. Opoku, 2014. Pachira glabra Pasq. essential oil: Chemical constituents, antimicrobial and insecticidal activities. J. Oleo Sci., 63: 629-635.
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  47. Lawal, O.A., I.A. Ogunwande and A.R. Opoku, 2014. Constituents of essential oils from the land flower of Plumeria alba grown in Nigeria. Nat. Prod. Commun., 9: 1613-1614.
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  48. Dludla, P.V., C.J.F. Muller, J. Louw, E. Joubert, R. Salie, A.R. Opoku and R. Johnson, 2014. The cardioprotective effect of an aqueous extract of fermented rooibos (Aspalathus linearis) on cultured cardiomyocytes derived from diabetic rats. Phytomedicine, 21: 595-601.
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  49. Soyingbe, O.S., A.O. Oyedeji, A.K. Basson, M. Singh and A.R. Opoku, 2013. Chemical composition, antimicrobial and antioxidant properties of the essential oils of Tulbaghia violacea Harv L.F. Afr. J. Microbiol. Res., 7: 1787-1793.
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  50. Soyingbe, O.S., A. Oyedeji, A.K. Basson and A.R. Opoku, 2013. The essential oil of Eucalyptus grandis W. Hill ex Maiden inhibits microbial growth by inducing membrane damage. Chinese Med., 4: 7-14.
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  51. Simelane, M.B.C., A. Shonhai, F.O. Shode, P. Smith, M. Singh and A.R. Opoku, 2013. Anti-plasmodial activity of some Zulu medicinal plants and of some triterpenes isolated from them. Molecules, 18: 12313-12323.
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  52. Ojekale, A.B., A.L. Oladipupo, A.S. Adeola, O.S. Folorunso, I.I. Azeez and R.O. Andy, 2013. Volatile constituents, antioxidant and insecticidal activities of essential oil from the leaves of Thaumatococcus danielli (Benn.) Benth. from Nigeria. Iosr J. Pharm., 3: 1-5.
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  53. Nanyonga, S.K., A.R. Opoku, F.B. Lewu, O.O. Oyedeji, M. Singh and A.O. Oyedeji, 2013. Variation in chemical composition and antibacterial activity of the essential oil from the fresh leaves, dry leaves and dry stem of Tarchonanthus camphorates. J. Med. Plants Res., 7: 442-447.
  54. Nanyonga, S.K., A.R. Opoku, F.B. Lewu, O.O. Oyedeji, M. Singh and A.O. Oyedeji, 2013. Antioxidant activity and cytotoxicity of the leaf and bark extracts of Tarchonanthus camphorates. Trop. J. Pharm. Res., 12: 377-383.
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  55. Nanyonga, S.K., A.R. Opoku, F.B. Lewu and A.O. Oyedeji, 2013. Chemical composition, larvicidal and antibacterial activities of the essential oil of Tarchonanthus trilobus var galpinii. J. Essential Oil Bear. Plants, 16: 524-530.
  56. Nanyonga, S.K., A.R. Opoku, F.B. Lewu and A.O. Oyedeji, 2013. Chemical composition, antioxidant activity and cytotoxicity of the essential oils of the leaves and stem of Tarchonanthus camphorates. Afr. J. Pharm. Pharmacol., 7: 360-367.
  57. Mongalo, N.I., A.R. Opoku and A.M. Zobolo, 2013. Antibacterial activity of root and leaf extracts of Jatropha zeyheri Sond (Euphorbiaceae). Afr. J. Biotechnol., 12: 476-480.
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  58. Mazibuko, S.E., C.J.F. Muller, E. Joubert, D. de Beer, R. Johnson, A.R. Opoku and J. Louw, 2013. Amelioration of palmitate-induced insulin resistance in C2C12 muscle cells by rooibos (Aspalathus linearis). Phytomedicine, 20: 813-819.
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  59. Babalola, I.T., F.O. Shode, E.A. Adelakun, A.R. Opoku and R.A. Mosa, 2013. Platelet-aggregation inhibitory activity of oleanolic acid, ursolic acid, betulinic acid and maslinic acid. J. Pharmacogn. Phytochem., 1: 54-60.
  60. Simelane, M.B.C., O.A. Lawal, T.G. Djarova, C.T. Musabayane, M. Singh and A.R. Opoku, 2012. Lactogenic activity of rats stimulated by Gunnera perpensa L.(Gunneraceae) from South Africa. Afr. J. Tradit. Complement. Altern. Med., 9: 561-573.
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  61. Nethengwe, M.F., A.R. Opoku, P.V. Dludla, K.T. Madida, A. Shonhai, P. Smith and M. Singh, 2012. Larvicidal, antipyretic and antiplasmodial activity of some Zulu medicinal plants. J. Med. Plants Res., 6: 1255-1262.
  62. Nanyonga, S.K., A. Opoku, F.B. Lewu and A.O. Oyedeji, 2012. Chemical composition and larvicidal activity of the essential oil of Tarchonanthus camphorates against Anopheles arabiensis mosquito larvae. J. Essential Oil Bear. Plants, 15: 288-295.
  63. Mongalo, N.I., A.R. Opoku and A.M. Zobolo, 2012. Antibacterial and antioxidant activity of the extracts of Waltheria indica Linn. collected from Capricorn District, Limpopo Province South Africa. J. Med. Plants Res., 6: 5593-5598.
  64. Lawal, O.A., A.A. Kasali, A.R. Opoku and A.O. Oyedeji, 2012. Volatile constituents of the flowers, leaves, stems and roots of Tithonia diversifolia (Hemsely) A. Gray. J. Essent. Oil Bear. Plants, 15: 816-821.
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  65. Dunpall, R., A.A. Nejo, V.S.R. Pullabhotla, A.R. Opoku, A. Shonhai and N. Revaprasadu, 2012. An in vitro assessment of the interaction of cadmium selenide quantum dots with DNA, iron and blood platelets. IUBMB Life, 64: 995-1002.
  66. Odeleye, O.M., A.O. Oyedeji and A.R. Opoku, 2011. Antimicrobial activity of Berkheya bergiana leaves extracts. Afr. J. Biotechnol., 10: 4941-4946.
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  67. Mosa, R.A., G.G. Lazarus, P.E. Gwala, A.O. Oyedeji and A.R. Opoku, 2011. In vitro anti-platelet aggregation, antioxidant and cytotoxic activity of extracts of some Zulu medicinal plants. J. Nat. Prod., 4: 136-146.
  68. Mosa, R.A., A.O. Oyedeji, F.O. Shode, M. Singh and A.R. Opoku, 2011. Triterpenes from the stem bark of Protorhus longifolia exhibit anti-platelet aggregation activity. Afr. J. Pharm. Pharmacol., 5: 2698-2714.
  69. Kasali, A.A., O.A. Lawal, A.O. Eshilokun, A.A. Olaniyan, A.R. Opoku and W.N. Setzer, 2011. Citrus essential oil of Nigeria Part V: Volatile constituents of sweet orange leaf oil (Citrus sinensis). Nat. Prod. Commun., 6: 875-878.
  70. Habila, J.D., F.O. Shode and A.R. Opoku, 2011. Triterpenoids from Eucalyptus grandis Hill ex Maiden inhibits platelet aggregation. Afr. J. Microbiol. Res., 5: 4646-4651.
  71. Simelane, M.B.C., O.A. Lawal, T.G. Djarova and A.R. Opoku, 2010. In vitro antioxidant and cytotoxic activity of Gunnera perpensa L.(Gunneraceae) from South Africa. J. Med. Plants Res., 4: 2181-2188.
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  72. Nejo, A.A., G.A. Kolawole, M.C. Dumbele and A.R. Opoku, 2010. Spectral, magnetic, biological and thermal studies of metal(II) complexes of some unsymmetrical Schiff bases. J. Coord. Chem., 63: 4367-4379.
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  73. McEwan, R., R.P. Madivha, T. Djarova, O.A. Oyedeji and A.R. Opoku, 2010. Alpha-amylase inhibitor of amadumbe (Colocasia esculenta): Isolation, purification and selectivity toward-amylases from various sources. Afr. J. Biochem. Res., 4: 220-224.
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  74. Andreeva, L., S. Tzvetkov, D. Stefanova, L. Petrov and L. Kamenov et al., 2010. Submaximal exercise test, blood pressure, heart rate and heamatological parameters in response to short period of dark chocolate intake in swimmers. Spor Hekimli i Dergisi Cilt (Turk. J. Sports Med.), 45: 45-56.
  75. Nejo, A.A., G.A. Kolawole, A.R. Opoku, J. Wolowska and P. O’Brien, 2009. Synthesis, characterization and preliminary insulin-enhancing studies of symmetrical tetradentate Schiff base complexes of oxovanadium (IV). Inorg. Chim. Acta, 362: 3993-4001.
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  76. Nejo, A.A., G.A. Kolawole, A.R. Opoku, C. Muller and J. Wolowska, 2009. Synthesis, characterization and insulin-enhancing studies of unsymmetrical tetradentate Schiff-base complexes of oxovanadium (IV). J. Coordination Chem., 62: 3411-3424.
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  77. Opoku, A.R., S.S. Sithole, N.P. Mthimkhulu and W. Nel, 2007. The endotoxin binding and antioxidative properties of ceramic granules. J. Wound Care, 16: 271-274.
  78. Opoku, A.R., I.M. Ndlovu, S.E. Terblanche and A.H. Hutchings, 2007. In vivo hepatoprotective effect of Rhoicissus tridentate subsp. cuneifolia, a traditional Zulu medicinal plant, against CCl4-induced acute liver injury in rats. SA J. Bot., 73: 372-377.
  79. Nkosi, C.Z., A.R. Opoku and S.E. Terblanche, 2006. Antioxidative effects of pumpkin seed (Cucurbita pepo) protein isolate in CCl4‐Induced liver injury in low‐protein fed rats. Phytother. Res., 20: 935-940.
  80. Nkosi, C.Z., A.R. Opoku and S.E. Terblanche, 2006. In vitro antioxidative activity of pumpkin seed (Cucurbita pepo) protein isolate and its In Vivo effect on alanine transaminase and aspartate transaminase in acetaminophen‐induced liver injury in low protein fed rats. Phytother. Res., 20: 780-783.
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  81. Nkosi, C.Z., A.R. Opoku and S.E. Terblanche, 2005. Effect of pumpkin seed (Cucurbita pepo) protein isolate on the activity levels of certain plasma enzymes in CCl4‐induced liver injury in low‐protein fed rats. Phytother. Res., 19: 341-345.
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  82. Opoku, A.R., N.F. Maseko and S.E. Terblanche, 2002. The in vitro antioxidative activity of some traditional Zulu medicinal plants. Phytother. Res., 16: 51-56.
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  83. Opoku, A.R., M. Geheeb-Keller, J. Lin, S.E. Terblanche, A. Hutchings, A. Chuturgoon and D. Pillay, 2000. Preliminary screening of some traditional Zulu medicinal plants for antineoplastic activities versus the HepG2 cell line. Phytother. Res., 14: 534-537.
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  84. Lin, J., A.R. Opoku, M. Geheeb-Keller, A.D. Hutchings, S.E. Terblanche, A.K. Jager and J. van Staden, 1999. Preliminary screening of some traditional zulu medicinal plants for anti-inflammatory and anti-microbial activities. J. Ethnopharmacol., 68: 267-274.
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  85. Opoku, A.R., I.K. Brown and K.A. Annan, 1998. Microbiological evaluation of egushie (Cucumeropsis edulus) protein isolate. Discov. Innov., 25: 86-91.
  86. Opoku, A.R. and A.C. Asare, 1997. Protein enrichment of millet flour with egushie (Cucumeropsis edulus) protein isolate. Int. J. Biochemiphys., 6: 45-48.
  87. Opoku, A.R., A. Akuoku and R. Buamah, 1994. Production of a high protein millet based beverage: Processing and physiological properties. Int. J. Biochemisphys., 3: 16-18.
  88. Obayuwana, J.O. and A.R. Opoku, 1986. Changes in reserve protein fractions in germinating millet. J. Univ. Sci. Tech. Ghana, 9: 56-65.
  89. Nwakwo, O. and A.R. Opoku, 1986. Studies of some enzymes involved in carbohydrate metabolism in germinating millet. Phyton, 46: 39-49.
  90. Abigor, D.R., F.I. Opute, A.R. Opoku and A.U. Osagie, 1985. Partial purification and some properties of the lipase present in oil palm (Elaeis guineensis) mesocarp. J. Sci. Food Agric., 36: 599-606.
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  91. Osagie, A.U. and A.R. Opoku, 1984. Enzymatic browning of yams (Dioscorea spp). Niger. J. Biochem., 1: 25-29.
  92. Opoku, A.R., A.U. Osagie and E.R. Ekpergin, 1983. Changes in the major constituents of millet (Pennisetum americanum) during germination. J. Agric. Food. Chem., 31: 507-509.
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  93. Opoku, A. and N. Uraih, 1983. Saccharification of cassava (manihot esculenta) with millet amylase. Eng. Life Sci., 3: 53-57.
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  94. Opoku, A.R., E.A.C. Nwanze and J.O. Chukwuigwe, 1982. Lipid content and nutritional status of Tricoderma reesei. Microb. Lett., 21: 133-136.
  95. Opoku, A.R., S.O. Ohenhen and N. Ejiofor, 1981. Nutrient composition of millet (Pennisetum typhoides) grains and malt. J. Agric. Food Chem., 29: 1247-1248.
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  96. Opoku, A.R. and P.A. Adoga, 1980. Two-stage fermentation method for production of protein-enriched feed from cassava. Enzyme Microb. Technol., 2: 241-243.
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