PHYTOCHEMICAL COMPOSITION AND ANTIBACTERIAL ACTIVITY OF SOME SPECIES OF MISTLETOE ON FIVE HOST TREES IN ABU CAMPUS, ZARIA, NIGERIA

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dc.contributor.authorTIZHE, TariDlama
dc.date.accessioned2016-07-26T08:15:02Z
dc.date.available2016-07-26T08:15:02Z
dc.date.issued2015-11
dc.descriptionA DISSERTATION SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE AWARD OF A MASTER OF SCIENCE (M.Sc.) DEGREE IN BOTANY. DEPARTMENT OF BIOLOGICAL SCIENCES, FACULTY OF SCIENCE AHMADU BELLO UNIVERSITY, ZARIA NIGERIAen_US
dc.description.abstractThis study focused on the identification of mistletoe species parasitic on Terminaliamantaly, Terminaliacatappa, Citrus grandis, Khayasenegalensisand Albizzialebbeck as well as the determination of the qualitative and quantitative phytochemical constituents and antibacterial activities of the leaf extracts of the host trees and their associated mistletoes. Fresh leaves of the mistletoes and their host trees were collected from four sampling areas within ABU campus, Samaru, Zaria, Nigeria. The leaves were air dried and pulverized. Maceration method was used for the extraction of the plant constituents. The susceptibility test of the samples on Staphylococcus aureus, Bacillussubtilis, Escherichia coliand Salmonellatyphiwas carried out using agar well diffusion method. The study revealed that, Tapinanthusglobiferus, Globimetulabraunii and Globimetulaoreophila were found parasitic on most of the host plant species exceptG. oreophila on Terminaliacatappa; Englerinalecardii was found parasitic only on Albizzialebbeckand Citrus grandis; Tapinanthusdodoneifolius was parasitic on T. catappa and A. lebbeck and Tapinanthusbelvisii was found parasitic on A. lebbeck, T. catappa and Terminaliamantalyrespectively. The qualitative phytochemical screening revealed the presence of tannins, saponins, flavonoids, cardiac glycosides and carbohydrates in both the ethanolic and aqueous leafextracts of most of the host plants and the mistletoes on them. Steroid was found present only in the aqueous extract of G. braunii from C. grandis and A. lebbeck, but was found in most of the extracts of Khayasenegalensis and the mistletoe species on it. The quantitative phytochemical screening revealed that cyanogenic glycosides and flavonoidshad the highest (31.00 %, in T. globiferusand 22.40 %, in K. senegalensisrespectively) concentrations than all the other compounds in both the host plants and attached mistletoes while phenols and tannins had the lowest vii (0.41 mg/ml, in C. grandis and 0.08 %, in G. brauniirespectively) concentrations than all the other compounds. The antibacterial activity of the aqueous leaf extracts of the host trees and associated mistletoes revealed that T. mantaly, C. grandis and A. lebbeckwereactive against most of the test organisms (S. aureus, B. subtilis, E. coliand S. typhi.) at the concentration ranging from 25 to 200 mg/ml except T. catappa extract, which was only active against S. aureus. Similarly, the extracts of mistletoes obtained from the host plants except the ones from T. mantaly and A. lebbeckwere also active against virtually all the test organisms. The control (ciprofloxacin), however, was the most active against all the test organisms compared to the plant extracts. In conclusion, this study showed thatA. lebbeck was the most parasitized host tree in the study area compared to other hosts. All the aqueous leaf extracts of the host trees with the mistletoe species sourced from them except the mistletoes from T. mantaly and A. lebbeckrespectivelyhad an antibacterial activityat concentration ranging from 25 to 200 mg/ml on S. aureus, B. subtilis, E. coliand S. typhi.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/8173
dc.language.isoenen_US
dc.subjectPHYTOCHEMICAL COMPOSITIONen_US
dc.subjectANTIBACTERIAL ACTIVITYen_US
dc.subjectMISTLETOE ON FIVE HOST TREESen_US
dc.subjectABU CAMPUS, ZARIA, NIGERIAen_US
dc.titlePHYTOCHEMICAL COMPOSITION AND ANTIBACTERIAL ACTIVITY OF SOME SPECIES OF MISTLETOE ON FIVE HOST TREES IN ABU CAMPUS, ZARIA, NIGERIAen_US
dc.typeThesisen_US
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