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Article ; Online: Rusty gold in Nigeria

Agbaje Lateef

South African Journal of Science, Vol 118, Iss 3/

Untapped advances in nanotechnology

2022 Volume 4

Keywords	nanotechnology R&D ; Nigeria ; scientometrics ; policy development ; nano-economy ; SDGs ; Science ; Q ; Science (General) ; Q1-390 ; Social Sciences ; H ; Social sciences (General) ; H1-99
Language	English
Publishing date	2022-03-01T00:00:00Z
Publisher	Academy of Science of South Africa
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Valorization of Feather by Bacillus safensis and Aquamicrobium defluvii for Growth Promotion in Leafy Vegetables

Adelere, Isiaka Adedayo / Lateef, Agbaje

Waste Biomass Valor. 2023 Mar., v. 14, no. 3 p.723-737

2023

Abstract: PURPOSE: This study assessed novel keratinolytic bacteria for feather valorization to yield feather hydrolysates (FHs) to cultivate vegetables. METHODS: Bacterial degradation of feather was determined through production of keratinase. Corchorus olitorius ...

Abstract	PURPOSE: This study assessed novel keratinolytic bacteria for feather valorization to yield feather hydrolysates (FHs) to cultivate vegetables. METHODS: Bacterial degradation of feather was determined through production of keratinase. Corchorus olitorius (Jute mallow), Celosia argentea (Cockscomb), and Amaranthus caudatus (Pendant amaranth) were grown with FHs through soil-less and pot experiments. Nitrogen and amino acid contents of FHs were determined, and the effects on soil microbes and fertility were studied. RESULTS: Aquamicrobium defluvii and Bacillus safensis degraded feather with keratinolytic activities of 45.2 and 56.7 U/ml, respectively. FHs improved seed germination by 1.29–1.67 folds and vigor index by 2.13–3.87 folds. In pot experiments, 50–100% FHs improved growth over control, while 100% FHs performed better than NPK in C. olitorius and C. argentea. In A. caudatus, NPK performed comparatively with 100% FHs. The FHs had nitrogen contents of 12.60–13.16% with abundance of glycine, alanine and leucine. FHs improved soil nitrogen content (27.91–37.21%) and organic carbon (24.11–29.46%) at 28 days, and stimulated soil microbial growth by 10¹–10². CONCLUSION: The significant plant growth promotion and improved soil fertility demonstrated by FHs suggest their potential application as biofertilizers to promote sustainable agricultural production. To our knowledge, this represents first report of keratinolytic strain of Aquamicrobium defluvii and use of FHs to promote growth of C. olitorius, A. caudatus and C. argentea.
Keywords	Amaranthus caudatus ; Aquamicrobium defluvii ; Bacillus safensis ; Celosia argentea ; Corchorus olitorius ; alanine ; biofertilizers ; biomass ; growth promotion ; jute ; leucine ; microbial growth ; nitrogen ; nitrogen content ; organic carbon ; plant growth ; seed germination ; soil ; soil fertility ; sustainable agriculture ; vigor ; wastes
Language	English
Dates of publication	2023-03
Size	p. 723-737.
Publishing place	Springer Netherlands
Document type	Article ; Online
ZDB-ID	2541900-6
ISSN	1877-265X ; 1877-2641
ISSN (online)	1877-265X
ISSN	1877-2641
DOI	10.1007/s12649-022-01904-9
Database	NAL-Catalogue (AGRICOLA)

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Article: An overview of biogenic metallic nanoparticles for water treatment and purification: the state of the art.

Azeez, Luqmon / Lateef, Agbaje / Olabode, Olalekan

Water science and technology : a journal of the International Association on Water Pollution Research

2023 Volume 88, Issue 4, Page(s) 851–873

Abstract: The environment is fundamental to human existence, and protecting it from dangerous contaminants should be a top priority for all stakeholders. Reducing garbage output has helped, but as the world's population grows, more waste will be generated. Tons of ...

Abstract	The environment is fundamental to human existence, and protecting it from dangerous contaminants should be a top priority for all stakeholders. Reducing garbage output has helped, but as the world's population grows, more waste will be generated. Tons of waste inadvertently and advertently received by environmental matrixes adversely affect the sustainable environment. The pollution caused by these activities affects the environment and human health. Conventional remediation processes ranging from chemical, physical, and biological procedures use macroaggregated materials and microorganisms to degrade or remove pollutants. Undesirable limitations of expensiveness, disposal challenges, maintenance, and formation of secondary contaminants abound. Additionally, multiple stages of treatments to remove different contaminants are time-consuming. The need to avoid these limitations and shift towards sustainable approaches brought up nanotechnology options. Currently, nanomaterials are being used for environmental rejuvenation that involves the total degradation of pollutants without secondary pollution. As nanoparticles are primed with vast and modifiable reactive sites for adsorption, photocatalysis, and disinfection, they are more useful in remediating pollutants. Review articles on metallic nanoparticles usually focus on chemically synthesized ones, with a particular focus on their adsorption capacity and toxicities. Therefore, this review evaluates the current status of biogenic metallic nanoparticles for water treatment and purification.
MeSH term(s)	Humans ; Metal Nanoparticles ; Adsorption ; Disinfection ; Environmental Pollutants ; Water Purification
Chemical Substances	Environmental Pollutants
Language	English
Publishing date	2023-08-31
Publishing country	England
Document type	Review ; Journal Article
ZDB-ID	764273-8
ISSN	1996-9732 ; 0273-1223
ISSN (online)	1996-9732
ISSN	0273-1223
DOI	10.2166/wst.2023.255
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Article: Improving the Yield of Citric Acid Through Valorization of Cashew Apple Juice by Aspergillus niger: Mutation, Nanoparticles Supplementation and Taguchi Technique

Adeoye, Adekunle Olusegun / Lateef, Agbaje

Waste and biomass valorization. 2022 Apr., v. 13, no. 4

2022

Abstract: PURPOSE: This study implemented strategies to improve citric acid yield by Aspergillus niger through strain improvement and process optimization using under-utilized cashew apple juice. METHODS: A. niger LCFS 5 (MZ448204) earlier isolated from a cashew ... ...

Abstract	PURPOSE: This study implemented strategies to improve citric acid yield by Aspergillus niger through strain improvement and process optimization using under-utilized cashew apple juice. METHODS: A. niger LCFS 5 (MZ448204) earlier isolated from a cashew plantation and produced citric acid on Czapek-Dox agar supplemented with bromocresol green (CZA-BG) was improved through UV mutation (254 nm). The best mutant was grown in cashew apple juice medium. The effects of supplementation of medium with 10% sucrose, metal ions, and biogenic zinc oxide nanoparticles (ZnONPs) were studied and production of citric acid was optimized using Taguchi technique. RESULTS: The mutant A. niger LCFAn40 (MZ448205) had yellow zonation of 9.0 cm on CZA-BG. It produced citric acid yield of 18.4, 25.03, 34.62 and 92.61%/day for supplementation with sucrose, metal ions, ZnONPs and Taguchi optimization, respectively. These translate to 2.38–11.98 folds improvement in comparison with wild strain. CONCLUSION: This study establishes multi-dimensional approach as a viable technique to improve citric acid production in cashew apple juice. To our knowledge, this is the first report of broad-based optimization regime of citric acid production that involves nanoparticles supplementation, which may open a new vista of investigations on the use of nanobiocatalysts in bioprocesses.
Keywords	Aspergillus niger ; agar ; biomass ; citric acid ; mutants ; mutation ; sucrose ; wastes ; zinc oxide
Language	English
Dates of publication	2022-04
Size	p. 2195-2206.
Publishing place	Springer Netherlands
Document type	Article
ZDB-ID	2541900-6
ISSN	1877-265X ; 1877-2641
ISSN (online)	1877-265X
ISSN	1877-2641
DOI	10.1007/s12649-021-01646-0
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Biotechnological valorization of cashew apple juice for the production of citric acid by a local strain of Aspergillus niger LCFS 5.

Adeoye, Adekunle Olusegun / Lateef, Agbaje

Journal, genetic engineering & biotechnology

2021 Volume 19, Issue 1, Page(s) 137

Abstract: Background: This work investigates the production of citric acid from cashew apple juice, an abundant waste in the processing of cashew, using a local strain of Aspergillus niger and the application of the citric acid as a coagulant for the production ... ...

Abstract	Background: This work investigates the production of citric acid from cashew apple juice, an abundant waste in the processing of cashew, using a local strain of Aspergillus niger and the application of the citric acid as a coagulant for the production of soy cheese. Fungal isolates were obtained from a cashew plantation in Ogbomoso, Nigeria, using potato dextrose agar. Further screening was undertaken to determine the qualitative strength of acid production by the fungi on Czapek-Dox agar supplemented with bromocresol green, with the development of yellow zone taken as an indication of citric acid production. Thereafter, the best producing strain was cultivated in a cashew apple juice medium. Results: Out of 150 fungal isolates generated from the cashew plantation, 92 (61.3%), 44 (29.3%) and 14 (9.3%) were obtained from cashew fruits, soil and cashew tree surfaces, respectively. Different strains of fungi isolated include Aspergillus niger, A. flavus, A. foetidus, A. heteromorphus, A. nidulans and A. viridinutans. The isolates produced yellow zonation of 0.4-5.5 cm on modified Czapek-Dox agar; the highest was observed for a strain of A. niger LCFS 5, which was identified using molecular tools. In the formulated cashew apple juice medium, the citric acid yield of LCFS 5 ranged 16.0-92.8 g/l with the peak obtained on the 10th day of fermentation. The citric acid produced was recovered using the double precipitation method with Ca(OH) Conclusion: This work has extended the frontiers of valorization of cashew waste by a strain of A. niger to produce citric acid in high yield, with potential application in food industries.
Language	English
Publishing date	2021-09-17
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	2637420-1
ISSN	2090-5920 ; 1687-157X ; 2090-5920
ISSN (online)	2090-5920
ISSN	1687-157X ; 2090-5920
DOI	10.1186/s43141-021-00232-0
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Article ; Online: Responses of Moringa oleifera to alteration in soil properties induced by calcium nanoparticles (CaNPs) on mineral absorption, physiological indices and photosynthetic indicators

Luqmon Azeez / Agbaje Lateef / Rasheed O. Adetoro / Adebayo E. Adeleke

Beni-Suef University Journal of Basic and Applied Sciences, Vol 10, Iss 1, Pp 1-

2021 Volume 15

Abstract: Abstract Background The application of nanofertilisers in agriculture has been widely utilised due to their distinct characteristics and negative impacts of conventional chemical fertilisers. This study thus examined the influence of calcium ... ...

Abstract	Abstract Background The application of nanofertilisers in agriculture has been widely utilised due to their distinct characteristics and negative impacts of conventional chemical fertilisers. This study thus examined the influence of calcium nanoparticles (CaNPs) on soil composition vis-à-vis performance parameters in Moringa oleifera L exposed to water, 100 mg Ca(NO3)2kg−1 soil and 100, 75 and 50 mg CaNPs kg−1 soil. Soil morphology was determined with a scanning electron microscope coupled with energy dispersive x-ray (SEM-EDX) and elemental composition in both soils and M. oleifera roots determined with inductively coupled plasma-optical emission spectrometer (ICP-OES). Results The CaNP-amended soils were more crystalline, more fertile and had reduced salinity. An increase in immobilisation percentage of heavy metals, improvement in physiological parameters (percentage germination, vigour indices, relative water contents, lengths of roots and shoots) and photosynthetic efficiency in M. oleifera were recorded. Conclusion This study has demonstrated that CaNPs could improve soil composition for better plant performance and can act as nanofertilisers mobilising essential nutrients. Graphical abstract
Keywords	Nanoparticles ; Mineral nutrients ; Photosynthetic indicators ; Soil fertility ; Immobilisation ; Medicine (General) ; R5-920 ; Science ; Q
Subject code	500
Language	English
Publishing date	2021-06-01T00:00:00Z
Publisher	SpringerOpen
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: A novel approach to the green synthesis of metallic nanoparticles

Adelere Isiaka A. / Lateef Agbaje

Nanotechnology Reviews, Vol 5, Iss 6, Pp 567-

the use of agro-wastes, enzymes, and pigments

2016 Volume 587

Abstract: The green synthesis of nanoparticles has received great attention in recent times owing to its advantages such as cost effectiveness, simplicity, eco-friendliness, biocompatibility, and wide applications over the conventional chemical and physical ... ...

Abstract	The green synthesis of nanoparticles has received great attention in recent times owing to its advantages such as cost effectiveness, simplicity, eco-friendliness, biocompatibility, and wide applications over the conventional chemical and physical methods. Various kinds of biomolecules from microorganisms and plants have been successfully utilized for the synthesis of metallic and nonmetallic nanoparticles, and these have been well documented. However, the recent increase in the fabrication of metallic nanoparticles using agro-wastes, enzymes and microbial and plant-derived pigments and their respective areas of applications have not been compiled as a review article. Therefore, the present efforts have been aimed at compilation of reports on the use of these novel bio-resources for the green synthesis of nanoparticles. To the best of our knowledge, this is the first review article on the green synthesis of metallic nanoparticles using diverse agro-wastes, enzymes, and pigments of biological origin. It is envisaged that the compendium will bring to the fore the emerging importance of these bio-resources for nanobiotechnological applications.
Keywords	agro-wastes ; enzymes ; green synthesis ; nanoparticles ; pigments ; Technology ; T ; Chemical technology ; TP1-1185 ; Physical and theoretical chemistry ; QD450-801
Subject code	620
Language	English
Publishing date	2016-12-01T00:00:00Z
Publisher	De Gruyter
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Green Synthesis and Antibacterial Activities of Silver Nanoparticles Using Extracellular Laccase of Lentinus edodes

Agbaje LATEEF / Adeyemi Ojutalayo ADEEYO

Notulae Scientia Biologicae, Vol 7, Iss 4, Pp 405-

2015 Volume 411

Abstract: This study reports the multi-step mutagenesis of Lentinus edodes towards optimization of the production of laccase and novel application of laccase in the biosynthesis of silver nanoparticles (AgNPs) which could be used to develop an eco-friendly method ... ...

Abstract	This study reports the multi-step mutagenesis of Lentinus edodes towards optimization of the production of laccase and novel application of laccase in the biosynthesis of silver nanoparticles (AgNPs) which could be used to develop an eco-friendly method for the rapid biosynthesis of AgNPs. The wild strain of L. edodes was subjected to UV irradiation at 254 nm and the resultant viable mutant was further treated with acridine orange, a chemical mutagen. The strains were evaluated for the production of laccase and the crude laccase of the UV mutant (UV10) was used for the green synthesis of AgNPs. The particles were characterized by UV-Visible spectroscopy, Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). Laccase activities of wild, UV10 and UV10ACR8 strains of L. edodes were obtained as 2.6, 10.6 and 2.8 U/ml/min respectively after 7 days of fermentation, showing laccase yield improvement of 4.08-fold for UV10 mutant. UV-Visible spectroscopy indicated the formation of AgNPs at absorption band of 430 nm. FTIR result indicated that proteins were responsible for AgNP synthesis, while SEM analysis confirmed the formation of walnut-shaped nanoparticles with size range of 50-100 nm. The biosynthesized nanoparticles revealed effective inhibition against clinical isolates of Escherichia coli, Pseudomonas aeruginosa and Klebsiella pneumoniae. To the best of the authors’ knowledge, this result represents the first report on the biosynthesis of AgNPs using L. edodes metabolite. The report adds to the growing relevance of L. edodes as potential industrially viable organism, used for diverse biotechnological applications.
Keywords	Agriculture (General) ; S1-972 ; Science (General) ; Q1-390
Subject code	500
Language	English
Publishing date	2015-12-01T00:00:00Z
Publisher	Society of Land Measurements and Cadastre from Transylvania (SMTCT)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Green Synthesis and Antibacterial Activities of Silver Nanoparticles Using Extracellular Laccase of Lentinus edodes

Agbaje LATEEF / Adeyemi Ojutalayo ADEEYO

Notulae Scientia Biologicae, Vol 7, Iss 4, Pp 405-

2015 Volume 411

Abstract	This study reports the multi-step mutagenesis of Lentinus edodes towards optimization of the production of laccase and novel application of laccase in the biosynthesis of silver nanoparticles (AgNPs) which could be used to develop an eco-friendly method for the rapid biosynthesis of AgNPs. The wild strain of L. edodes was subjected to UV irradiation at 254 nm and the resultant viable mutant was further treated with acridine orange, a chemical mutagen. The strains were evaluated for the production of laccase and the crude laccase of the UV mutant (UV 10 ) was used for the green synthesis of AgNPs. The particles were characterized by UV-Visible spectroscopy, Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). Laccase activities of wild, UV 10 and UV 10 ACR 8 strains of L. edodes were obtained as 2.6, 10.6 and 2.8 U/ml/min respectively after 7 days of fermentation, showing laccase yield improvement of 4.08-fold for UV 10 mutant. UV-Visible spectroscopy indicated the formation of AgNPs at absorption band of 430 nm. FTIR result indicated that proteins were responsible for AgNP synthesis, while SEM analysis confirmed the formation of walnut-shaped nanoparticles with size range of 50-100 nm. The biosynthesized nanoparticles revealed effective inhibition against clinical isolates of Escherichia coli , Pseudomonas aeruginosa and Klebsiella pneumoniae . To the best of the authors’ knowledge, this result represents the first report on the biosynthesis of AgNPs using L. edodes metabolite . The report adds to the growing relevance of L. edodes as potential industrially viable organism, used for diverse biotechnological applications.
Keywords	Agriculture (General) ; S1-972 ; Science (General) ; Q1-390
Subject code	500
Language	English
Publishing date	2015-12-01T00:00:00Z
Publisher	Society of Land Measurements and Cadastre from Transylvania (SMTCT)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: The effects on oxidative aging, physical and flow properties of Agbabu natural bitumen modified with silver nanoparticles.

Olabemiwo, Ojeyemi M / Lateef, Agbaje / Agunbiade, Foluso O / Akanji, S B / Bakare, Hassan O

Heliyon

2020 Volume 6, Issue 6, Page(s) e04164

Abstract: The quest for improvement in service life and performance of road pavement via reduction of oxidative aging failure of bitumen, led us to the investigation of novel application of Silver nanoparticles (AgNPs) as potential anti-oxidative material for ... ...

Abstract	The quest for improvement in service life and performance of road pavement via reduction of oxidative aging failure of bitumen, led us to the investigation of novel application of Silver nanoparticles (AgNPs) as potential anti-oxidative material for Agbabu natural bitumen (ANB). The raw ANB was purified to form the base and the base modified in a stainless reactor using AgNPs via melt blend technique at temperature of 120 °C under stirring at 1200rpm. The proportions of AgNPs used for the modification were 1.5, 3.0 and 4.5 wt% and long-term aging was thermally simulated on the base and modified base samples at 60 °C. The aged samples were then subjected to Fourier Transform Infrared (FTIR) Spectroscopic Analysis to study the changes in the size of the peaks of the oxidation-related compounds. Physical and flow parameters (PFPs) of the base and modified base samples were characterized using softening point temperature, kinematic viscosity, penetration index, flash and fire points, penetration, kinematic viscosity and Oscillatory disc Rheometer (ODR) test. FTIR analysis showed that the AgNPs incorporation into ANB at 1797 cm
Language	English
Publishing date	2020-06-27
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2020.e04164
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