Browsing Department of Chemistry by Title
Now showing items 1-20 of 337
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2-Hydroxysorangiadenosine: Structure and Biosynthesis of a Myxobacterial Sesquiterpene–Nucleoside
(Multidisciplinary Digital Publishing Institute, 2020)Myxobacteria represent an under-investigated source for biologically active natural products featuring intriguing structural moieties with potential applications, e.g., in the pharmaceutical industry. Sorangiadenosine and ... -
7α-Acetylugandensolide and antimicrobial properties of Warburgia ugandensis extracts and isolates against sweet potato pathogens
(Elsevier, 2011-06-15)7α-Acetylugandensolide together with thirteen known drimane-type sesquiterpenes have been isolated from Warbugia ugandensis bark extracts. Their structures were established by spectroscopic and physical methods as well ... -
Adsorption of copper ions from water onto fish scales derived biochar: Isothermal perspectives
(Journal of Materials and Environmental Science, 2020)In this work, Tilapia (Oreochromis niloticus) fish scales were used for the development of an economical biochar (FSB) by slow pyrolysis at 600 oC. The FSB was characterized using energy dispersive x-ray (EDX), x-ray ... -
Analgesics from Lonchocarpus eriocalyx Harms
(Islamic Azad University, Shahrood Branch Press,, 2018-12-15)Four lupane-type terpenoids, namely lupeol (1), friedelin (2), stigmasterol (3), and stigmasterol-3-O-glucoside (4) were isolated from the ethyl acetate extract of leaves of Lonchocarpus eriocalyx Harms. These compounds ... -
Anti-plasmodial and larvicidal effects of surface exudates of Gardenia ternifolia aerial parts
(University of Nairobi, 2010)Various parts of Gardenia ternifolia (leaves, roots and stem bark) have been reported by traditional healers as a remedy against malaria fever. The aerial parts are coated with shiny materials rich in flavonoid aglycones. ... -
Anticancer activity of Eugenia jambolana seeds against Hep2 cell lines
(ResearchGate, 2015)Cancer is a life-threatening disease and leads to high rates of mortality worldwide, after cardiovascular disease, is the second leading cause of death. Investigations for finding new plant based anticancer compounds ... -
Antimicrobial activity of southern African medicinal plants with dermatological relevance: From an ethnopharmacological screening approach, to combination studies and the isolation of a bioactive compound
(Elsevier, 2013)Ethnopharmacological relevance Ethnobotanical reports on more than 100 southern African medicinal plants with dermatological relevance have been highlighted, yet there is still limited scientific data to support claims ... -
Antimicrobial Compounds from Terminalia brownii against Sweet Potato Pathogens
(Bentham Science Publishers, 2011-10)Phytochemical evaluation of Terminalia brownii extracts led to the isolation of five compounds namely - sitosterol, stigmasterol, monogynol A, betulinic acid and arjungenin. Their structures were established by ... -
Antimycobacterial and cytotoxic activities of extracts from fungal isolates of Lake Magadi
(AJOL, 2017)In this study, antimycobacterial and cytotoxic activities of ethyl acetate extracts of fungal isolates from Lake Magadi were evaluated. The extracts were tested against Mycobacterium madagascariense (MM) and M. indicus ... -
Antinociceptive and antiplasmodial activities of cassane furanoditerpenes from Caesalpinia volkensii H. root bark
(Elsevier, 2012-01-01)The chloroform and ethyl acetate extract (100mg/kg) of Caesalpinia volkensii H. exhibited significant (P≤ 0.05) antinociceptive activities using hot plate and writhing tests in mice while the later showed antiplasmodial ... -
Antioxidant activities oftriacontanyl-E-cinnamoatesmetabolites from Caesalpinia volkensii root bark extracts
(Research gate, 2017)Natural antioxidants have been reported to prevent oxidative damage caused by free radicals generated during biochemical processes and thus useful in prevention of several degenerative diseases. The present study evaluated ... -
Antioxidant and Free Radical Scavenging Activities of Selected Kenyan Leafy Vegetables
(African Environmental Review Journal, 2020)Naturally occurring antioxidants found in vegetables and fruits can play a critical role in deactivating free radicals often before they attack biological cells in humans. Indigenous Kenyan vegetables are potential sources ... -
Antiplasmodial and antimicrobial activities of ent-abietane diterpenoids from the roots of Suregada zanzibariensis
(Taylor and Francis, 2022-12-28)The root extract ofSuregada zanzibariensisBaill. afforded six previ-ously describedent-abietane diterpenoids, namely 7-oxo-ent-abieta-5(6),8(14),13(15)-trien-16,12-olide (1), mangiolide (2),8,14b:11,12a-diepoxy ... -
Application of Crude Enzymatic Extract In Mushroom Processing To Recover High Value Products
(Research square, 2021-10-21)In the present study, a fungal strain was isolated from mushroom waste dump-site and was described based on the morphological and molecular characteristics. The crude enzymatic extract was prepared by fermenting pineapple ... -
Application of Nanotechnology for Enhanced Treatment of Tropical Diseases
(MMU, 2017-01-28)The use of nanotechnology in drug delivery is a rapidly expanding field. Nanotechnology is a multidisciplinary scientific undertaking that involves creation and utilization of materials, devices or systems on nanometer ... -
Applications of Active and Passive Sampling Techniques in Environmental Monitoring of Organochlorine Pesticides (OCPs) in Kenya
(www.iosrjournals.org, 2019-07)This study evaluated the efficiency of using active sampling to estimate the environmental levels of bioavailable persistent organic pollutants (POPs) by introducing graded filters. Long-term passive sampling was combined ... -
Assessment of anti-proliferative activities of selected medicinal plant extracts used for Management of Diseases around Lake Victoria Basin
(ResearchGate, 2017)The devastating effect of cancer is a worldwide concern. Unfortunately current chemotherapeutic and radio therapeutic modalities have been found to possess side effects coupled with the emergence of drug resistance. This ... -
Assessment of Constraints in Technology Transfer System and Policies which Limit the Realisation of High Green Leaf Production in the Smallholder Tea Sector of the Kenya Tea …
(African Technology Policy Studies Network (ATPS), 2005-01-01)Technological recommendations for maximizing green leaf production have been made available to smallholder farmers by the Tea Research Foundation of Kenya (TRFK) through various publications. Indeed TRFK has released ...
