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Nigerian Biomass for Bioenergy Applications:A Review on the Potential and Challenges

Journal of Renewable Materials 2023年第12期11卷 4123-4141页

作者： adekunle a.adeleke Nzerem Petrus Salihu Ayuba Asmau M.Yahya Peter P.Ikubanni Ikechuckwu S.Okafor Stephen S.Emmanuel Adebayo I.Olosho Ademidun A.Adesibikan Department of Mechanical Engineering Nile University of NigeriaAbuja900001Nigeria Department of Petroleum and Gas Engineering Nile University of NigeriaAbuja900001Nigeria Department of Mechanical Engineering Landmark UniversityOmu-Aran251103Nigeria Department of Industrial Chemistry University of IlorinIlorin240003Nigeria

Nigeria,often referred to as“the giant of Africa,”boasts a sizable population,a thriving economy,and abundant energy ***,Nigeria has yet to fully harness its renewable energy potential,despite its enormous capacity in this *** goal of this review paper is to thoroughly examine the difficulties and untapped opportunities in utilizing biomass for bioenergy production in ***,Nigeria generates substantial volumes of biomass annually,primarily in the form of agricultural waste,which is often either discarded or burned inefficiently,resulting in significant ecological and environmental ***,an efficient approach to reducing pollution and transforming waste into wealth involves converting these biomass resources into *** work critically examines the status of biomass utilization for energy applications in Nigeria and highlights the bottlenecks that impede its widespread *** review emphasizes the economic and ecological advantages of biomass utilization over traditional waste treatment ***,it underscores the appeal of biomass as an industrial fuel source,particularly considering the current high cost of fossil fuels in contemporary *** literature on biomass,energy,agricultural waste,fossil fuel,and calorific value in the context of Nigeria was reviewed by utilizing a thorough search technique in key scientific *** analysis did not include any non-English *** findings of this research provide valuable insights into the challenges faced in maximizing Nigeria’s biomass potential and offer strategic recommendations to promote the use of biomass for bioenergy *** review paper will assist a wide range of local and international readers,as well as industries interested in green and bioenergy,in making informed decisions regarding the most suitable types of biomass for biofuel production.

关键词： Nigerian biomass bioenergy policy support corncob infrastructural development

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Antimicrobial Activities of Extracts of Macrosphyra longistyla against Gram-Positive Oral Biofilm-Formers from School Children in Southwestern Nigeria and Toxicity Studies Using Brine Shrimps

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Advances in Microbiology 2024年第3期14卷 163-174页

作者： Chukwuemeka Emmanuel Nwankwo Onikepe Folarin adeleke Osho Department of Biological Sciences Faculty of Natural Sciences Redeemer’s University Ede Nigeria African Centre of Excellence for Genomics of Infectious Diseases (ACEGID) Redeemer’s University Ede Nigeria

The world will benefit from more effective antimicrobial agents against oral conditions arising from the actions of biofilm forming bacteria. Also, information is lacking on the oral biofilm-forming bacterial diversity in Southwestern Nigeria. In this study, we isolate and characterize oral biofilm producing bacteria in the oral cavities of schoolchildren in Southwestern Nigeria. We also investigate the antimicrobial properties of Macrosphyra longistyla extracts against the biofilm-formers and the toxicity of potent extracts. Samples were obtained from 109 schoolchildren aged 4 - 14 years from Lagos, Oyo and Osun States. Agar well diffusion technique was used in the antimicrobial susceptibility testing. Toxicity testing was done using brine shrimps (Artemia salina). Biofilm-formers in this study are Klebsiella sp., Streptococcus sp., Staphylococcus sp., and Micrococcus sp. Ethanol leaf extracts had the highest activity against all biofilm-producing bacteria. Ethanol stem bark extract, which elicited activity against Klebsiella only, was found to be less toxic than the ethanol leaf extract. Staphylococcus showed >10 mm susceptibility to the ethanol and aqueous extracts of Macrosphyra longistyla. Streptococcus and Micrococcus were susceptible to the antimicrobial actions of the ethanolic leaf extracts. Although the ethanol extracts of the leaves had lower minimum inhibitory concentrations than the ethanol extracts of the stem bark, toxicity studies showed ethanol extracts of the stem-bark to be more toxic than the ethanol extracts of the leaves. In conclusion, ethanolic extracts of Macrosphyra longistyla show potential as sources of antimicrobials against gram-positive, oral biofilm-forming bacteria.

关键词： Biofilms Plant Extracts Toxicity Bacteria Susceptibility Antimicrobial

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Physical and mechanical characteristics of composite briquette from coal and pretreated wood fines

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International Journal of Coal Science & Technology 2021年第5期8卷 1088-1098页

作者： adekunle adeleke Jamiu Odusote Peter Ikubanni Olumuyiwa Lasode Madhurai Malathi Dayanand Pasawan Department of Mechanical Engineering Landmark UniversityOmu-AranNigeria Department of Materials and Metallurgical Engineering University of IlorinIlorinNigeria Department of Mechanical Engineering University of IlorinIlorinNigeria Metal Extraction and Recycling Division National Metallurgical LaboratoryJamshedpurIndia

Melina wood torrefied at 260℃ for 60 min was agglomerated with lean grade coal fines into composite briquettes using pitch as *** biomass(3%-20%)and coal fines(80%-97%)were blended together to produce the composite briquettes under a hydraulic press(28 MPa).The briquettes were cured at 300℃.Density,water resistance,drop to fracture,impact resistance,and cold crushing strength were evaluated for the composite *** proximate,ultimate,and calorific value analyses were carried out according to different ASTM *** studies were carried out using scanning electron microscope and electron probe microanalyzer equipped with energy dispersive *** Transform Infrared Spectrophotometer(FTIR)was used to obtain the functional groups in the raw materials and *** density of the composite briquettes ranged from 0.92 to 1.31 g/cm^(3) after *** with95%).The highest cold crushing strength of 4 MPa was obtained for briquettes produced from 97%coal fines and 3%torrefied *** highest drop to fracture(54 times/2 m)and impact resistance index(1350)were obtained for the sample produced from 97%coal and 3%torrefied *** fixed and elemental carbons of the briquettes showed a mild improvement compared to the raw *** peaks from FTIR spectra for the briquettes shows the presence of aromatic C=C bonds and phenolic OH *** composite briquettes with up to 20%torrefied biomass can all be useful as fuel for various applications.

关键词： Composite briquettes Lean grade coal Torrefied biomass Physico-mechanical properties Combustion properties

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Effects of plant growth-promoting rhizobacteria on the molecular responses of maize under drought and heat stresses: A review

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Pedosphere 2022年第1期32卷 90-106页

作者： Iviwe NOTUNUNU Lucy MOLELEKI Ashira ROOPNARAIN Rasheed adeleke Department of Biochemistry Genetics and MicrobiologyForestry and Agricultural Biotechnology InstituteUniversity of PretoriaLynnwood RdHatfieldPretoria 0002South Africa Microbiology and Environmental Biotechnology Research Group Agricultural Research Council—Natural Resources and EngineeringPrivate Bag X79Pretoria 0001South Africa Unit for Environment Science and Management North-West University(Potchefstroom Campus)Potchefstroom 2520South Africa

Drought and heat are major environmental stresses that continually influence plant growth and development. Under field conditions, these stresses occur more frequently in combination than alone, which magnifies corresponding detrimental effects on the growth and productivity of agriculturally important crops. Plant responses to such abiotic stresses are quite complex and manifested in a range of developmental, molecular, and physiological modifications that lead either to stress sensitivity or tolerance/resistance. Maize (Zea mays L.) is known for its sensitivity to abiotic stresses, which often results in substantial loss in crop productivity. Bioaugmentation with plant growth-promoting rhizobacteria (PGPR) has the potential to mitigate the adverse effects of drought and heat stresses on plants. Hence, this is considered a promising and eco-friendly strategy to ensure sustainable and long-term maize production under adverse climatic conditions. These microorganisms possess various plant growth-promoting (PGP) characteristics that can induce drought and heat tolerance in maize plants by directly or indirectly influencing molecular, metabolic, and physiological stress responses of plants. This review aims to assess the current knowledge regarding the ability of PGPR to induce drought and heat stress tolerance in maize plants. Furthermore, the drought and heat stress-induced expression of drought and heat stress response genes for this crop is discussed with the mechanisms through which PGPR alter maize stress response gene expression.

关键词： abiotic stress drought stress gene expression heat stress stress response gene stress tolerance Zea Mays L.

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Therapeutic potential of rutin in male infertility:A mini review

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Journal of Integrative Medicine 2023年第2期21卷 130-135页

作者： Damilare Emmanuel Rotimi Tobiloba Christiana Elebiyo Oluwafemi adeleke Ojo SDG 03 Group–Good Health&Well-being Landmark UniversityOmu-Aran 251101Kwara StateNigeria Department of Biochemistry Landmark UniversityOmu-Aran 251101Kwara StateNigeria Phytomedicine Molecular Toxicologyand Computational Biochemistry Research Laboratory(PMTCB-RL)Department of BiochemistryBowen UniversityIwo 232101Osun StateNigeria

Male infertility has become a problem worldwide,and recent research has emphasized the development of more effective therapy *** natural compounds,rutin has been widely studied for its potential to treat dysfunction related to male infertility,including a reduction in sperm quality,spermatogenesis disruption and structural disruption in the testis.A thorough review of scientific literature published in several databases,including Google Scholar,PubMed/MEDLINE and Scopus,was used to synthesize the present state of research on the role of rutin in male reproductive *** has been shown to possess antiapoptotic,antioxidant and anti-inflammatory activities,among others,which are crucial in the management of male *** investigations have shown that rutin protects against male infertility and have explored the underlying mechanisms *** present review,therefore,assesses the therapeutic mechanisms involved in male infertility treatment using *** was able to mitigate the induced oxidative stress,apoptosis,inflammation,and related physiological processes that can cause testicular dysfunction.

关键词： Antioxidant Inflammation Rutin Sperm Testicularfunction

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Mechanisms of medicinal plants in the treatment of diabetic wound

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Asian Pacific Journal of Tropical Biomedicine 2023年第6期13卷 233-241页

作者： Oluwakemi V.adeleke Stephen A.Adefegha Ganiyu Oboh Functional Foods Nutraceuticals and Phytomedicine LaboratoryDepartment of BiochemistryFederal University of Technology AkureAkureNigeria Department of Science Laboratory Technology Ekiti State UniversityAdo EkitiNigeria

Wound repair is noticeably prolonged in a diabetic state due to a faulty inflammatory process and an underlying *** medicinal plants and their products have been of prime importance for the management of wounds over the *** mechanisms whereby medicinal plants elicit their action in wound repair are revealed and some plants are proven to be experimentally effective in enhancing wound closure and achieving *** mechanisms identified include hyperglycemic control,alleviation of physiological inflammation,controlled oxidative stress,infection control,and influence on gene *** in this review was sourced from research and review articles in electronic databases such as Web of Science,Scopus,PubMed,and Google Scholar.

关键词： Diabetes Infection Inflammation Medicinal plants Wound healing Oxidative stress

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Neuromodulatory effects of ethyl acetate fraction of Zingiber officinale Roscoe extract in rats with lead-induced oxidative stress

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Journal of Integrative Medicine 2019年第2期17卷 125-131页

作者： Mary Abiola Okesola Basiru Olaitan Ajiboye Babatunji Emmanuel Oyinloye Oluwafemi adeleke Ojo Department of Biochemistry Covenant University Department of Biochemistry Afe Babalola University Department of Biochemistry University of Ilorin

Objective: This study investigated the ameliorative potential of Zingiber officinale Roscoe extract against lead-induced brain damage in ***: Thirty male rats were divided into 5 groups of 6 rats each. Lead-acetate toxicity was induced by intraperitoneal injection(10 mg/kg body weight(b.w.)) in Groups B–E. Group A(control) and Group B(lead-acetate) were left untreated; vitamin C(200 mg/kg b.w.) was administered to Group C; ethyl acetate fraction from Z. officinale extract(200 and 100 mg/kg b.w.) was administered to Group D and E by oral gavage once daily for 7 days. Changes in the content of some key marker enzymes such as acetylcholinesterase(AChE), butyrylcholinesterase(BChE), monoamine oxidase(MAO), epinephrine, dopamine,Na^+/K^+-ATPase, catalase(CAT), superoxide dismutase(SOD) and glutathione peroxidase(GPx) as well as malonaldehyde(MDA) levels were determined in ***: Exposure to lead acetate resulted in a significant decrease(P < 0.05) in the activities of BChE,AChE, Na^+/K^+-ATPase, SOD, CAT and GPx with a corresponding increase in the levels of MDA, xanthine oxidase, epinephrine, dopamine and MAO relative to the control group. Levels of all disrupted parameters were alleviated by co-administration of Z. officinale fraction and by the standard drug, vitamin ***: These results suggest that ethyl acetate fraction of Z. officinale extract attenuates leadinduced brain damage and might have therapeutic potential as a supplement that can be applied in lead poisoning.

关键词： Zingiber officinale Acetylcholinesterase Monoamine oxidase Na^(+)/K^(+)-ATPase Lead acetate Neurodegenerative disorders

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Antimicrobial and antioxidant properties of African medicinal plants

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Journal of Coastal Life Medicine 2017年第1期5卷 16-21页

作者： Ademola Zaid Aderolu Muyideen Owonire Lawal Olufemi Olukolajo Soyinka adekunle Taofeek adeleke Mariam Damilola Bello Department of Marine Sciences University of LagosAkokaLagosNigeria

Objective:To study antioxidant and antimicrobial properties ofTerminalia catappa,Psidium guajava,Alstonia boonei,Morinda lucida (M. lucida) andSpondias mombin leave extracts using ethanol, petroleum-ether and aqueous media. Methods: The free radical 2, 2-diphenyl-1-picrylhydroazyl was used to measure scavenging activities of extracts, while phenolic and flavonoid content were estimated by spectrophotometry. Antibacterial screening of extracts was done by determining zone of inhibition using disc diffusion method. Plant extracts were tested against five strains of Gram-positive and Gram-negative bacteria. After sterilization, the discs were loaded with concentrations of broad spectrum ciprofloxacin, and prepared extract solutions of different concentrations were refrigerated for 24 h. Determination of minimum inhibitory concentration of extracts in the screening assay was according to micro-broth dilution, while determination of minimum bactericidal concentration was carried out by agar diffusion. Results: The highest radical scavenging effect was found in petroleum ether extracts of all the plants withM. lucida andPsidium guajava having the highest and lowest values respectively. Aqueous solvent recorded highest phenolic content in all extracts with the exception ofM. lucida. Flavonoid content was extracted better fromAlstonia boonei andM. lucida with ethanol, while aqueous solvent extracted more from the other plants. With exception of extracts from petroleum ether, all others exhibited varying levels of antibacterial activities againstE. coli,Pseudomonas aeruginosa,Salmonella typhi,Vibrio cholera andStaphylococcus aureus. Conclusions:This study proved that all crude extracts showed strong antioxidant and antimicrobial potentials, which qualified them as nutraceuticals in fish feed production.

关键词： Total flavonoid content Total phenolic content Antioxidant activity Antimicrobial activity African medicinal plants

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尼日利亚南部阿贝奥库塔地区冈比亚按蚊复合体的形态特征研究(双翅目：蚊科)

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昆虫学报 2008年第12期51卷 1289-1292页

作者： Monsuru Adebayo adeleke Chiedu Felix MAFIANA Adewunmi Babatunde IDOWU Abiodun Ayanlayo Sarafadeen AMUSAN Michael Femi adekunle Department of Biological Sciences University of Agriculture P.M.B 2240 Abeokuta Ogun State Nigeria Department of Forestry and Wildlife University of Agriculture P.M. B 2240 Abeokuta Ogun State Nigeria

对采自尼日利亚南部城市阿贝奥库塔冈比亚按蚊复合体Anopheles gambiae complex的形态特征进行了研究。依据2005年8月至2006年7月灯诱捕获的364个冈比亚按蚊复合体标本,分别对它们的触角、翅、喙、前足、中足和后足6个部位的长度进行了... 详细信息

对采自尼日利亚南部城市阿贝奥库塔冈比亚按蚊复合体Anopheles gambiae complex的形态特征进行了研究。依据2005年8月至2006年7月灯诱捕获的364个冈比亚按蚊复合体标本,分别对它们的触角、翅、喙、前足、中足和后足6个部位的长度进行了测量,对月平均值进行回归分析,同时利用差异系数(coefficient of difference,CD)进行近缘分析。分析显示,各特征的长度平均值雨季大于旱季,但是回归分析表明长度变化与季节不显著相关(P>0.05)。差异系数分析结果表明,仅触角长度和翅长显示此复合体为两个不同的种群(CD>1.28),而其他特征值表明为同一种群。因此,该研究结果提示触角长度及翅长对冈比亚按蚊复合体近缘种的区分有重要参考价值。

关键词：冈比亚按蚊复合体形态分析近缘种季节种群阿贝奥库塔尼日利亚

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Influence of Glyphaea brevis twig extract on nucleus, tight junctions and expression of inhibin-β, stem cell factor, and androgen binding protein in TM4 Sertoli cells

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Asian pacific Journal of Reproduction 2019年第4期8卷 157-166页

作者： Janet Olayemi Olugbodi Oladipupo David Oluwafemi adeleke Ojo Afolabi Clement Akinmoladun Department of Biochemistry Bingham UniversityAbuja-Keffi RoadKaruNigeria Department of Medical Bioscience University of the Western CapeBellvilleCape TownSouth Africa Phytomedicine and Biochemical Toxicology Unit Department of BiochemistryAfe Babalola UniversityPMB 5454Ado-EkitiNigeria Phytomedicine Biochemical Pharmacology and Toxicology LaboratoriesDepartment of BiochemistrySchool of SciencesPMB 704The Federal University of TechnologyAkureNigeria

Objective: To examine the influence of Glyphaea (G.) brevis twig extract on the mitochondrial dehydrogenase activity, integrity of the tight junctions between adjacent cells, mitochondria, apoptosis, nucleus and expression of inhibin-β, stem cell factor, and androgen binding protein in TM4 Sertoli cells. Methods: TM4 cell line was used in this study as it exhibited properties similar to the Sertoli cells. TM4 Sertoli cells were exposed to G. brevis twig extract (0.1, 1.0, 10.0, 100.0, or 1000.0μg/mL) for 24, 48 and 72 h. Parameters studied included cell viability [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay], mitochondrial membrane potential (tetra methyl rhodamine ethyl ester dye), transepithelial electrical resistance, apoptosis (Annexin V Alexa Fluor?488/propidium iodide assay) and mRNA expression (quantitative reverse transcription polymerase chain reaction). Results: G. brevis twig extract had no cytotoxic impact on cell viability, thus, considerably increasing the activity of mitochondrial dehydrogenase enzyme after 24 and 72 h exposure. Transepithelial electrical resistance values revealed substantial (P<0.05) rise in treated groups, especially after 72 h of treatment. Moreover, there was a significant decrease in mitochondrial depolarization of TM4 Sertoli cells exposed to G. brevis twig extract when compared to controls. In addition, G. brevis twig extract significantly reduced necrosis and apoptosis of TM4 Sertoli cells when compared to control. Nevertheless, fluorescence microscopy revealed that the nuclei were egg-shaped and marked uniformly with consistent cell shape at the middle of the TM4 Sertoli cells. Significant stimulatory effects were observed on mRNA levels of inhibin-β, androgen binding protein and stem cell factor. Conclusions: G. brevis twig extract may increase the secretory roles of TM4 Sertoli cells, cells proliferation, as well as cell-cell tight junction integrity. Thus, G. brevis twig may enhance spermatogenesis

关键词： Glyphaea brevis twig TM4 Sertoli cell line Inhibin-β Androgen binding protein

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