Volume-15 ~ Issue-10 ~ Oct. 2022

Abstract: High yield of oil from melon seed and its relatively low cost suggests its usefulness in soap production. This study investigated the physico-chemical properties of soap produced from coconut oil, melon seed oil and a blend of the two. The soaps were produced using the hot process method. Each of the oil was heated to 70oC and saponified with potassium hydroxide solution in line with its lye factor. Sodium silicate, sodium carbonate and sodium lauryl sulphate were used as additives. The soap was allowed to set for two days and their physico-chemical properties were determined and compared with a popular commercial brand in Nigerian market. The physico-chemical properties of CO soap, MSO soap and the blend respectively were found to be: pH (9.7, 10.1, 10.0); total fatty matter (72.13%, 70.26%, 71.20%); total alkali (0.33%, 0.35%, 0.34%); free caustic alkali (0.11%, 0.10%, 0.10%); moisture content (10.41%, 9.68%, 10.07%); matter insoluble in water (6.78%, 7.02%, 7.0%) and foaming capacity (3.10cm3,2.90cm3, 3.20cm3). Each of the soap samples had lower value of matter insoluble in water than a popular brand used as the reference standard but compares favourably with the control in cleansing capacity and other parameters..

Keywords: toilet soap, oil, coconut, melon seed

[1]. Mc Naught, D. and Wilkinson, A. Compendium of Chemical Technology, (2nd Ed.) the Black Well Scientific Publication, Oxford press; 1997, pp. 120-125.
[2]. Cavitch, S.M. The Natural Soap Book Making Herbal and Vegetable Base Soap, Storey Publishing New Yoke City;1995, pp. 55-72
[3]. Oghome P., Eke M. U. and Kamalu C.I.O. Characterization of Fatty Acid Used In Soap Manufacturing In Nigeria: Laundry, Toilet, Medicated and Antiseptic Soap. International Journal of Modern Engineering Research (IJMER); 2012, 2(4): 2930-2934
[4]. Mishra D. Preparation of Soap Using Different Types of Oils and Exploring its Properties. Dissertation submitted to Department of Chemical Engineering National Institute of Technology, Rourkela; 2013, pp.9-34
[5]. cosmetics. Lye calculation using a saponification chart – tutorial, https://auntieclaras.com (accessed 20/7/2019)

Abstract: Bridelia micrantha is a plant traditionally used in tropical Africa to treat a wide range of human and animal diseases. The present study aims to highlight the presence or not of some families of chemical compounds through phytochemical screening, to evaluate the antioxidant and antimicrobial activities of the different extracts from the barks and roots of Bridelia micrantha. Sequential macerations with solvents of increasing polarity (hexane, ethyl acetate, ethanol, and water) were carried out. The highest extraction rate of 50 % is obtained with crude ethanol. The antioxidant activity of the fractions and of the crude ethanolic extract were evaluated by the DPPH. method. The 50% inhibitory concentrations (IC50) vary from 1.1 ± 0.0 mg/mL to 31 ± 1.7 mg/mL (respectively for the ethanolic and ethyl acetate fractions) for barks and 0.17 ± 0.00 mg/mL to 19.40 ± 0.14 mg/mL.......

Keywords: Bridelia micrantha, antioxidant activity, antimicrobial activity

[1]. M. Lemunier, C. Francou, S. Rousseaux, S. Houot, P. Dantigny, P. Piveteau, J. Guzzo, Long-Term Survival of Pathogenic and Sanitation Indicator Bacteria in Experimental Biowaste Composts, Appl.Environ. Microbiol.71(10), 2005, 5779-5786.
[2]. F. D. Lowy, Staphylococcus aureus Infections, N. Eng. J. Med. 339, 520-532
[3]. Handbook of Medicinal Herbs, CRC Press, 2002.
[4]. J. Ou, M. Wang, J. Zheng, S. Ou, Positive and negative effects of polyphenol incorporation in baked foods, Food Chem.284, 2019, 90–99.
[5]. J. Lin, T. Puckree, T. P. Mvelase, Anti-diarrhoeal evaluation of some medicinal plants used by Zulu traditional healers, J. Ethnopharmacol.79(1), 2002, 53–56.

Abstract: Polychlorinated biphenyls (PCBs) are part of persistent organic pollutants which are very harmful for environment and human beings. The international community envisaged the complete elimination of PCBs for 2028. However, the techniques available of destruction are very expensive because of consuming energy, with environmental and health risks. To offset these difficulties, we investigate a simple and effective method for elimination of PCBs in liquid phase. This technique is based on catalyzed photodégradation. Because biphenyl is the major products of PCBs....

Keywords: photocdegradation, , PCBs , photonique effect , Biphenyl, H2O2

[1] Bilal, M., Rasheed, T., Iqbal, H. M., et Yan, Y. (2018). Peroxidases assisted removal of environmentally-related hazardous pollutants with reference to the reaction mechanisms of industrial dyes. Science of The Total Environment, 644, 1-13.
[2] Malek, A. M., Barchowsky, A., Bowser, R., Heiman-Patterson, T., Lacomis, D., Rana, S., ... Talbott, E. O. (2015). Exposure to hazardous air pollutants and the risk of amyotrophic lateral sclerosis. Environmental pollution, 197, 181-186.
[3] Zhou. Z, Zhang. Y, Wang. H, Chen. T, Lu. W; The comparative photodegradation activities of pentachlorophenol (pcp) and polychlorinated biphenyls (pcbs) using UV alone and tio2-derived photocatalysts in methanol soil washing solution; PLOS ONE; (2014); 9(9):
[4] Järv, L., Kiviranta, H., Koponen, J., Rantakokko, P., Ruokojärvi, P., Radin, M., ... & Simm, M. (2017). Persistent organic pollutants in selected fishes of the Gulf of Finland. Journal of Marine Systems, 171, 129-133.
[5] Tidjani, M. M. O., Issoufou, A., Rabani, A., & Zeinab, S. S. (2018). Contamination potentielle des aliments par des polychlorobiphényles (PCBs): Connaissance du polluant et évaluation de la perception du risque. International Journal of Biological and Chemical Sciences, 12(1), 168-179.

Abstract: Reactions of CoCl2.6H2O and ZnCl2.4H2O with 2-mercaptobenzoic acid gave new complexes {[CoLi2C28H18O9S4)]} (1) and {[Zn2Li2C56H32O16S8)].3(H2O)} (2) in which the 2-mercaptobenzoic acid underwent in situ oxidation to give the bis(2-carboxyphenyl)disulfide ligand. Co(II) and Zn(II) complexes are chemically similar. The only difference lies in the number of crystallization solvent molecules. The two complexes crystallize in the same system with the same space group with very similar cell parameters. In each complex the central 3d metal ions is surrounded by four oxygen atoms, resulting in a O4 coordination set which is best described as a distorted tetrahedral geometry. In complex (1)one Li(I) is situated in O4 site and one Li(I) in O4S site are present. In complex.....

Keywords: Cobalt, Zinc, Lithium, Disulfide, Tetrahedral, Bipyramidal

[1]. M. Nandy, D. Saha, C. Rizzoli, S. Shit, Trigonal dodecahedral sodium coordination in a trinuclear copper(II)-sodium complex incorporating a salen-type compartmental Schiff base, Zeitschrift für NaturforschungB, 72, 2017, 133‑140. https://doi.org/10.1515/znb-2016-0208
[2]. J.-P. Zhao, S.-D. Han, R. Zhao, Q. Yang, Z. Chang, X.-H. Bu, Tuning the Structure and Magnetism of Heterometallic Sodium(1+)–Cobalt(2+) Formate Coordination Polymers by Varying the Metal Ratio and Solvents, Inorganic Chemistry 52,2013, 2862‑2869. https://doi.org/10.1021/ic301936k
[3]. Z. Cai, D. Xiao, L. H. Do, Cooperative Heterobimetallic Catalysts in Coordination Insertion Polymerization, Comments Inorganic Chemistry, 39, 2019,27‑50. https://doi.org/10.1080/02603594.2019.1570165
[4]. L. Wang, X. Pan, L. Yao, N. Tang, J. Wu, Ring-Opening Polymerization of L-Lactides Catalyzed by Zinc–Sodium/Lithium Heterobimetallic Complexes in the Presence of Water, European Journal of Inorganic Chemistry, 2011, 632‑636, 2011. https://doi.org/10.1002/ejic.201001283
[5]. R. Divya, V. T. Vineeth, B. R. Bijini, C. M. K. Nair, K. RajendraBabu, Growth and characterization of heterobimetallic copper-sodium complex of cyanuric acid: A novel photoluminescent material, Journal of Molecular Structure, 1200, 2020,127031.https://doi.org/10.1016/j.molstruc.2019.127031

Abstract: One of the greatest environmental threats in recent years is exposure to varioussulfur-containing compounds.Fossil fuels contain various sulfur-containing compounds that produce sulfur oxides when burned.Consequently, the desulfurization of fuels is in high demand.Metal-organic frameworks (MOFs) and MOF-derived materials are the most promising materials for a wide range of applications. This review summarizes the use of pristine MOFs, MOFs immobilized with functional groups, and MOF-derived materials in the desulfurization of fuels by oxidative desulfurization (ODS) and adsorptive desulfurization (ADS), and also highlights the recent advances in the field of application of MOFs for fossil fuel desulfurization.

Keywords: Metal-organic Frameworks, Sulfur-containing compounds, Oxidative desulfurization, Adsorptive desulfurization

[1]. J. Chow, R. J. Kopp and P. R. Portney, Energy Resources and Global Development, Science (80-. )., 2003, 302, 1528–1531.
[2]. R. N. Colvile, E. J. Hutchinson, J. S. Mindell and R. F. Warren, The transport sector as a source of air pollution, Atmos. Environ., 2001, 35, 1537–1565.
[3]. S. Kumar, H. T. Kwon, K. H. Choi, W. Lim, J. H. Cho, K. Tak and I. Moon, LNG: An eco-friendly cryogenic fuel for sustainable development, Appl. Energy, 2011, 88, 4264–4273.
[4]. N. L. Panwar, S. C. Kaushik and S. Kothari, Role of renewable energy sources in environmental protection: A review, Renew. Sustain. Energy Rev., 2011, 15, 1513–1524.
[5]. B. Pawelec, R. M. Navarro, J. M. Campos-Martin and J. L. G. Fierro, Towards near zero-sulfur liquid fuels: A perspective review, Catal. Sci. Technol., 2011, 1, 23–42