Browsing by Author "Fatai A. Aderibigbe"

Now showing 1 - 4 of 4
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    Characterisation, Amino Acid Composition and Denaturation status of Acid Soluble Collagen from Catfish (Clarias gariepinus) Skin
    (The West Indian Journal of Engineering, 2022-01) Ayoade L. Adejumo; Luqmon Azeez; Ebenezer I.O. Ajayic; Tope G. Atered; Fatai A. Aderibigbe; Rasheed O. Adetoro
    This study reported characterisation of acid-soluble collagen from the skin of freshwater catfish (Clarias gariepinus) by Fourier Transform Infra-Red spectroscopy (FTIR), scanning electron microscopy (SEM) and energy dispersive x-ray (EDX). Amino acid composition and denaturation temperature of the collagen were determined. Acid soluble collagen (ASC) from the skin of C. gariepinus produced a comparatively yield of 2.38% with all amide functional groups (Amide A, B, I, II and III) visible in the FTIR spectrum suggesting the intactness of triple helical structure of the collagen. The SEM of C. glariepinus, shows a mono-fibrillated irregularly arranged crystalline surface material having 24.46 % carbon, 11.72 % oxygen and 9.40 % nitrogen. The abundance of amino acids follows glycine > arginine > proline > alanine indicating the integrity of collagen and a non-disruptive method of extraction. The denaturation temperature (Td) of ASC was about 30 °C implying its usefulness in food and pharmaceutical indus
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    Green Synthesis for the Production of Glucose Syrup from Waste Cassava Starch Using Alpha-Amylase
    (FUOYE Journal of Engineering and Technology: Published by Faculty of Engineering, Federal University Oye-Ekiti., 2024-06) Fatai A. Aderibigbe; Esther O. Babatunde; Sunday O. Ochapa; Harvis B. Saka
    Abstract --- Research on production of glucose syrup from waste cassava starch has not been adequately covered. In this paper, we report on the process for breaking down starch through harnessing the catalytic properties of silver nanoparticles (AgNPs) in an enzymatic procedure that encompasses the breakdown of starch by alpha-amylase. The analysis carried out on the starch-synthesized AgNPs had its peak absorbance in the region between 400 nm and 500 nm, the X-ray diffraction (XRD) result also showed that the AgNPs were crystalline and this indicated that the nanoparticle formed could be used for hydrolysis. The presence of silver nanoparticles was observed to enhance the speed at which starch was enzymatically broken down as sample G1 (which was the sample with an equal amount of silver nanoparticle and alpha-amylase) has a concentration of 5.23 mg/mL (which implies a percentage conversion of approximately 52.3%). It is hypothesized that alpha-amylase became immobilized on the nanoparticle surface giving rise to a better glucose yield in this study
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    Heterogeneous Catalysis of Second Generation Oil for Biodiesel Production: A Review
    (Wiley-VCHGmbH: ChemBioEngRev, 2021) Fatai A. Aderibigbe; Suleiman Shiru; Saka, H. B.; Amosa, M. K.; Sherif Ishola Mustapha; MohammedIAlhassan; Ayoade L. Adejumo; Morufudeen Abdulraheem; Owolabi, R. U.
    Abstract The demand for cleaner fuels has been on the rise lately, prompting researchers to explore alternative cleaner technologies to meet the growing demand. This has led to the introduction of renewable fuels such as bioethanol and biodiesel. Depending on the feedstock employed for production, renewable fuels can be divided into first, second, and third genera tion. Reliance on first generation biofuel feedstocks has led to inherent competition between foods versus fuels in the society in the last decade. Further technological prospects in research and develop ment have provided insight into the use of second generation biofuel feed-stocks from non-edible agricultural waste products, energy crops, and crop residues. Zeolites and modified zeolites as heterogeneous catalysts have been highly prospec tive for the transesterification process of these oils. Modified zeolite can act as a bi-functional catalyst because of its acidic and basic sites. Here, a review of transesterification reaction technology, zeolite and modified zeolite as a heterogeneous catalyst to generate biodiesel was discussed. Cur rent status, challenges and future prospects are also discussed. Keywords: Biodiesel, Heterogeneous catalyst, Homogeneous catalyst, Transesterification, Zeolite
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    Valorization of restaurant waste oil and cow-bone doped siliceous termite hills towards biodiesel production: Kinetics and thermodynamics
    (Sustainable Chemistry and Pharmacy: Elsevier B.V., 2022) Esther O. Babatunde; Saka H. Bamidele; Fatai A. Aderibigbe; Adeyinka S. Yusuff; Bisheswar Karmakar; Samuel Lalthazuala Rokhumd; Gopinath Halder
    The type of feedstock and catalyst selected are major factors in determining the process effi ciency, product cost and fuel yield obtained from a biodiesel production process. The use of ter mite hill as a highly reusable inert support, doped with cow bones in the synthesis of biodiesel from restaurant waste oil (RWO) could be a cost-effective alternative to other conventional cata lyst types or processes. Therefore, two catalysts (raw cow-bone supported on silica; R–SC1.5 and calcined cow bone supported on silica; C-SC1.5) were developed and used in biodiesel production. The maximum conversion of RWO was 95.12% using C-SC1.5 at reaction time 2.5 h, methanol to oil ratio 9:1, temperature 65 °C and catalyst loading of 2 %w/w. The prepared catalysts were characterized using SEM, EDX, FTIR, XRD and BET analysis. The kinetics of the RWO with R–SC1.5 and C-SC1.5 was further studied. The activation energy (Ea) and frequency factor (A) were found to be 41.4 kJ/mol, 53.41 kJ/mol and 2.24 × 104 min−1, 2.29 × 106 min−1 respectively. The transesterification reaction adhered to first order law, while physicochemical properties of the biodiesel obtained were within the American Standard for Testing and Materials (ASTM) lim its, since the product has low FFA content, low viscosity, high thermal stability with high energy content and improved combustion characteristics. Reusability of C-SC1.5 was also examined, which revealed effectiveness up to 5 reuses without significant reduction in biodiesel yield.