Department of Chemistry: Recent submissions
Now showing items 101-120 of 337
-
Mechanisms of Analgesic and Anti-Inflammatory Properties of Annona muricata Linn. (Annonaceae) Fruit Extract in Rodents
(Journal of medicinal food, 2014)Unripe fruit of Annona muricata Linn. (Annonaceae) (soursop) is used in traditional African medicine for the treatment of neuralgia, rheumatism, and arthritic pain. This study sought to investigate the analgesic and ... -
Flavonoids from Tephrosia interrupta and T. linearis.
(CABI DIRECT, 1990)In east Africa, medicinal uses have been reported for the roots of T. interrupta (coughs and treatment of women after childbirth) and the leaves of T. linearis ([unspecified] diseases in infants). Flavonoid analyses are ... -
Isolation and chemical characterisation of pyrrolisidine alkaloids from some senecio
(University of Calgary, 1991) -
Errata. Pyrrolizidine Alkaloids from Senecio hadiensis
(American Chemical Society, 1991-09)17-Oxosparteine (1 mg), -isolupanine (3 mg), and N-methylcytisine (2 mg) were iden- tified by ms and tic comparisons with authentic samples (6,8). Catalytic reduction (2 mg) of 5,6-dehydrolu- panine (4 mg), oil, ms (9) ... -
Ruwenine and ruzorine: Pyrrolizidine alkaloids of Senecio ruwenzoriensis
(Pergamon, 1992-09-01)A reinvestigation of Kenyan Senecio ruwenzoriensis reported to contain two alkaloids of unknown structures, ruwenine and ruzorine, resulted in the isolation of the pyrrolizidine alkaloid isoline, accompanied by what appeared ... -
The pyrrolizidine alkaloids of Senecio syringifolius and S. hadiensis from Kenya
(Pergamon, 1993-01-01)Angularine, rosmarinine and 12-O-acetylrosmarine, together with their N-oxides were isolated from epigeal parts of S. syringifolius, while -
Chinchona Alkaloid from Dendrosenecio kilimanjari subsp. cottonii
(Georg Thieme Verlag Stuttgart· New York, 1997-02)Investigation of the Tanzanian Dendrosenecio kilimanjari subsp. cottonii resulted in the isolation of the cinchona alkaloid, cinchonidine (2). Conversion of cinchonidine to deoxy-cinchonidine was achieved in high yield ... -
Improved biodegradation of 1,2,4-trichlorobenzene by adapted microorganisms in agricultural soil and in soil suspension cultures
(Pedosphere, 2011)Inoculating soil with an adapted microbial community is a more effective bioaugmentation approach than inoculation with pure strains in bioremediation. However, information on the potential of different inocula from sites ... -
Enhancement of degradation of DDT and HCB in tropical clay soils in model experiments
(Technische Universität München, 2010)This study sought to enhance the degradation of two persistent organic pollutants (POPs) – DDT and HCB – in two tropical clay soils in model laboratory experiments. Anaerobic-aerobic cycles and amendment with compost were ... -
Degradation capacity of a 1, 2, 4-trichlorobenzene mineralizing microbial community for traces of organochlorine pesticides
(Elsevier, 2010-07-15)A soil-borne microbial community isolated from a contaminated site was previously shown to mineralize 1,2,4-trichlorobenzene (1,2,4-TCB) under aerobic conditions. The key degrader in this community was identified as ... -
Effects of autoclaving and mercuric chloride sterilization on PAHs dissipation in a two-liquid-phase soil slurry
(Elsevier, 2011-02-01)A two-liquid-phase (TLP) soil slurry system was employed to quantify the efficiencies of autoclaving and mercuric chloride sterilization in the dissipation of polycyclic aromatic hydrocarbons (PAHs). The fates of 11 PAHs ... -
Enhanced microbial degradation of humin-bound phenanthrene in a two-liquid-phase system
(Elsevier, 2011-02-28)Humin, the main component of soil organic matter, greatly influences the nonlinear sorption and desorption hysteresis of polycyclic aromatic hydrocarbons (PAHs) in soil. However, little is known about the bioavailability ... -
Extracellular polymeric substances enhanced mass transfer of polycyclic aromatic hydrocarbons in the two-liquid-phase system for biodegradation
(Springer-Verlag, 2011-05-01)The objective was to elucidate the role of extracellular polymeric substances (EPS) in biodegradation of polycyclic aromatic hydrocarbons in two-liquid-phase system (TLPs). Therefore, biodegradation of phenanthrene (PHE) ... -
Improved biodegradation of 1, 2, 4-trichlorobenzene by adapted microorganisms in agricultural soil and in soil suspension cultures
(Elsevier, 2011-08-01)Inoculating soil with an adapted microbial community is a more effective bioaugmentation approach than inoculation with pure strains in bioremediation. However, information on the potential of different inocula from sites ... -
Chemical extraction to assess the bioavailability of chlorobenzenes in soil with different aging periods
(Springer-Verlag, 2011-12-01)Bioavailability is mainly influenced by aging and desorption of contaminants in soil. The purpose of this study was to investigate the desorption kinetics of chlorobenzenes (CBs) in soil and to investigate whether chemical ... -
Bioavailability assessment of hexachlorobenzene in soil as affected by wheat straw biochar
(Elsevier, 2012-05-30)Biochar incorporation with soil could increase sorption of organic contaminants, thereby reducing their bioavailability. In this study, the effects of wheat straw biochar on the sorption, dissipation and bioavailability ... -
Does powder and granular activated carbon perform equally in immobilizing chlorobenzenes in soil?
(Royal Society of Chemistry, 2015)The objective of this study is to compare the efficacies of powder activated carbon (PAC) and granular activated carbon (GAC) as amendments for the immobilization of volatile compounds in soil. Soil artificially-spiked ... -
Enhanced soil washing process for the remediation of PBDEs/Pb/Cd-contaminated electronic waste site with carboxymethyl chitosan in a sunflower oil–water solvent system and …
(Springer Berlin Heidelberg, 2015-02-01)An innovative ex situ soil washing technology was developed to remediate polybrominated diphenyl ethers (PBDEs) and heavy metals in an electronic waste site. Elevated temperature (50 °C) in combination with ultrasonication ... -
Evaluation of enhanced soil washing process with tea saponin in a peanut oil–water solvent system for the extraction of PBDEs/PCBs/PAHs and heavy metals from an electronic …
(John Wiley & Sons, Ltd, 2015-11)Problems associated with PBDEs/PCBs/PAHs and heavy metals mixed contaminated sites have received wideattention. To address the associated environmental concerns, innovative remediation techniques are urgently needed -
Energy Evaluation and Qualitative Analysis of Biogas Produced from Co-Digesting Kitchen Waste and Cow Dung
(Physical Science International Journal, 2017)Anaerobic digestion is an effective method for organic pollution reduction and bio-energy production and has increasing applications worldwide. Produced biogas consists mainly of 50–70% methane (CH4) and 30–50% carbon ...
