Browsing Department of Chemistry by Title
Now showing items 212-231 of 323
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Optimising fermentation time in black tea manufacture
(Elsevier, 1986)A comparative study using in-line theaflavins analysis (ILTF), theaflavins of made-tea analysis (TFMT) and tasters' evaluations, to optimise fermentation during tea manufacture, was carried out. All methods obeyed a quadratic ... -
Optimization of biodiesel synthesis from Jatropha curcas oil using kaolin derived zeolite Na–X as a catalyst
(Royal Society of Chemistry, 2022)Biodiesel is an alternative renewable green fuel obtainable from the reaction of plant or animal oil with a low molecular weight alcohol in the presence of a catalyst. However, the cost of its production remains high due ... -
Optimization of Bioethanol Production from Sweet Sorghum Stalk (Sorghum bicolor (l.) Moench) Juice Using Response Surface Method
(Science publishing group, 2022)The use of fossil fuel as a source of energy has been unsustainable and has adverse effects to the environment. Bioethanol is a suitable alternative due to its exceptional properties. Bioethanol production can be done ... -
Optimization of parameters for bio-ethanol production from sweet sorghum (Sorghum bicolor (L.) Moench) stalk juice and finger millet malt using Taguchi method
(2024)Bio-ethanol is a promising renewable energy but its production is expensive from high cost of feedstocks. In this study, sweet sorghum (Sorghum bicolor (L.) Moench) stalk juice was investigated for bio-ethanol production. ... -
Optimizing production of biodiesel catalysed by chemically tuned natural zeolites
(Elsevier, 2018-12-31)The twin crises of fossil fuel depletion and environmental degradation coupled with their unpredictable prices is a reality. Biodiesel is a promising, viable and environmentally friendly alternative. However, production ... -
Optimizing Zeolitic Catalysis for Environmental Remediation
(John Wiley & Sons, Inc., 2015-05-01)This chapter discusses the effects of chemical and physical properties of zeolites as they affect the catalytic efficacy and applications of the zeolites in environmental remediation. Heterogeneous catalysts, where zeolites ... -
Phytochemistry and insecticidal activity of Annona mucosa leaf extracts against Sitophilus zeamais and Prostephanus truncatus
(Taylor and Francis online, 2021)A new oleanane type triterpene characterized as 3α, 24-diacetoxy-12-oleanene (1) together with known compounds 2-10, were isolated from Annona mucosa leaf extracts. Their structural elucidation was accomplished using ... -
Phytochemistry and insecticidal activity of Annona mucosa leaf extracts against Sitophilus zeamais and Prostephanus truncatus
(Taylor and Francis, 2021)A new oleanane type triterpene characterized as 3a, 24-diacetoxy12-oleanene (1) together with known compounds 2-10, were isolated from Annona mucosa leaf extracts. Their structural elucidation was accomplished using ... -
Phytochemistry and insecticidal activity of Annona mucosa leaf extracts against Sitophilus zeamais and Prostephanus truncatus
(Taylor and Francis, 2020)A new oleanane type triterpene characterized as 3a, 24-diacetoxy 12-oleanene (1) together with known compounds 2-10, were isolated from Annona mucosa leaf extracts. Their structural eluci dation was accomplished using ... -
Phytoconstituents with contact toxicity and antifeedant activities from Englerodaphne subcordata (Meisn) Engl.(Thymelaeaceae) crude leaf extracts
(Islamic Azad University, Shahrood Branch Press, 2023-09-01)Englerodaphne subcordata (Meisn) Engl. (Thymelaeaceae) is a shrub that grows in dry evergreen forests, acacia woodlands and wooded grasslands. Phytochemical evaluation of the ethyl acetate and methanol crude leaf extracts ... -
Phytoecdysteroids from the stem bark of Vitex doniana and their anti-inflammatory effects.
(Planta Medica, 2013)With reference to the ethnopharmacological significance of Vitex doniana Sweet (Lamiaceae) leaves in the treatment of stomach and rheumatic pains as well as inflammatory disorders, biological studies on its stem bark ... -
Polycyclic Aromatic Hydrocarbons in the Gulf of Winam in Kenya. ISBN: 978-3-8465-2336-0.
(Lap Lambert, Germany, 2011) -
Positive relationship detected between soil bioaccessible organic pollutants and antibiotic resistance genes at dairy farms in Nanjing, Eastern China
(Elsevier, 2015-11-30)Abstract Co-contaminated soils by organic pollutants (OPs), antibiotics and antibiotic resistance genes (ARGs) have been becoming an emerging problem. However, it is unclear if an interaction exists between mixed ... -
Potential of novel phytoecdysteroids isolated from Vitex doniana in the treatment depression: Involvement of monoaminergic systems
(Elsevier, 2014-12-01)Vitex doniana Sweet (Verbanaceae) is used in traditional African medicine for the treatment of neurological disorders including depression. In our previous studies, three new phytoecdysteroids were isolated from methanol ... -
The potential of Zea mays, Commelina bengelensis, Helianthus annuus and Amaranthus hybridus for phytoremediation of waste water
(Instituto de Pesquisas Ambientais em Bacias Hidrográficas, 2012-12)Waste-water from domestic use and from industrial effluent burden the water systems with high levels of heavy metal hence there is need to remove these heavy metals so that the waste water can be recycled for use for ... -
Preparation and Application of Biochars for Organic and Microbial Control in Wastewater Treatment Regimes
(IGI Global, 2019)Biochars have been extensively applied in soil remediation, carbon sequestration, and in climate change mitigation. However, in recent years, there has been a significant increase in biochar research in water treatment due ... -
Preparation, characterization of fish scales biochar and their applications in the removal of anionic indigo carmine dye from aqueous solutions
(IWA Publishing, 2019-12-01)The preparation and applications of Tilapia (Oreochromis niloticus) fish scale biochars (FSB) as an adsorbent in the removal of indigo carmine dye (ICD) from aqueous solutions is described. The biochars were prepared through ...