| Novel Sources of Saccharomyces Species as Leavening Agent in Bread Making SO Umeh, J Okpalla, JNC Okafor International Journal of Trend in Scientific Research and Development …, 2019 | 6 | 2019 |
| Effect of microorganisms and storage environments on ripening and Spoilage of Plantain (Musa paradisiaca) fruits sold in Eke Awka market SO Umeh, UC Okafor, J Okpalla World Wide Journal of Multidisciplinary Research and Development 3 (10), 186-190, 2017 | 6 | 2017 |
| Studies on lysine accumulation in broth culture of Bacillus species using carbohydrates as carbon sources and seed meals as nitrogen sources J Okpalla, IA Ekwealor Inter J Trend in Scientific Res Development. 2019b 3 (2), 760-772, 2019 | 4 | 2019 |
| Microbiological examination and Preservative methods of a local beverage drink (Zobo) sold in Anambra State, Nigeria SO Umeh, BC Okeke, J Okpalla, GC Agu American International Journal of Contemporary Scientific Research 2 (9), 37-45, 2015 | 4 | 2015 |
| Screening for lysine production by bacteria isolated from Nigerian soil J Okpalla, IA Ekwealor World Wide J Multidiscip Res Develop. 2019a 5 (4), 10-18, 2019 | 3 | 2019 |
| Biochemical changes of melon seeds (Citrullus vulgaris) fermented by pure cultures of Bacillus licheniformis. J Okpalla, CC Ubajekwe, KC Agu, I Iheukwumere | 2 | 2012 |
| The Influence of Agitation Rates, pH and Calcium Carbonate on L-lysine Production by Bacillus subtilis using Agricultural Products as Carbon and Nitrogen Sources J Okpalla, IA Ekwealor Microbiology Research Journal International 32 (11), 1-11, 2022 | 1 | 2022 |
| The Effect of Inoculum Size and Medium Volume on Methionine Production by Bacillus species EZ-13 and ZM-10 J Okpalla Asian Journal of Biology 18 (4), 14-20, 2023 | | 2023 |
| The Influence of Amino Acids and Trace Elements on L-lysine Production by Bacillus subtilis Using Agricultural Products as Carbon and Nitrogen Sources J Okpalla, IA Ekwealor Archives of Current Research International 23 (1), 7-14, 2023 | | 2023 |
| The influence of surfactants and bivalent metals on L-lysine production by Bacillus subtilis using agricultural products as carbon and nitrogen sources J Okpalla, IA Ekwealor World Journal of Advanced Research and Reviews 17 (1), 1138-1145, 2023 | | 2023 |
| Antibacterial activities of fungi isolated from soil samples in refuse dumping sites at Ifite –Awka in Awka South Local Government Area of Anambra State. , 9(5):1107- 1 J Odumodu, O.A. and Okpalla International Journal of Science and Research 9 (5), 1107- 1112, 2022 | | 2022 |
| Studies on the thermo, osmo and pH tolerances of some palmwine yeasts. J Okpalla Global Scientific Journals 10 (12), 1821-1828, 2022 | | 2022 |
| Protease Production by Submerged Fermentation in Shake Flasks Using Bacillus sp. Isolated from the Soil J Okpalla, DA Onyekuru, IE Duru, TO Mba | | 2022 |
| Isolation and Screening for citric acid production by Aspergillus niger using sucrose as a carbon source. PO Mbah O.M, Okpalla J., Osuala O.J. Okoye P. and Alagbu International Journal of Trend in Scientific Research and Development 5 (5 …, 2021 | | 2021 |
| Utilization of Reducing Sugars from Cassava fibre and Corncob for Bioethanol Production J Okpalla, LC Eleanya GSJ 8 (6), 2020 | | 2020 |
| Optimization of fermentation conditions for bioethanol production from acid hydolysed cassava fibres and corn cobs using a palmwine yeast JELC Okpalla Global Scientific Journals 8 (6), 732-743, 2020 | | 2020 |
| L-glutaminase production by a terrestrial Pseudomonas species isolated from Nigerian soil. J Okpalla, SO Umeh, OL Dim | | 2019 |
| The use of Lichens in the biomonitoring of heavy metal concentrations in Nnamdi Azikiwe University premises SO Umeh, GC Agu, J Okpalla, EO Uche The Bioscientist Journal 3 (1), 45-55, 2015 | | 2015 |
| Isolation and screening for protease-producing Bacillus species from soils in Awka Anambra state South Eastern Nigeria. J Okpalla, SO Umeh, CC Ubajekwe, I Iheukwumere, TC Onyeneto | | 2015 |
| Studies on the Occurrence of Pathogens in Fermented African Oil Bean Seed Ugba J Okpalla | | |
