Yazar "Viljoen, Alvaro M." için listeleme
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The antimicrobial, antimalarial and toxicity profiles of helihumulone, leaf essential oil and extracts of Helichrysum cymosum (L.) D. Don subsp cymosum
Van Vuuren, Sandy; Viljoen, Alvaro M.; van Zyl, Robyn L.; van Heerden, F. R.; Başer, K. Hüsnü Can (Elsevier Science BV, 2006)Helichrysum cymosum, an aromatic plant used in traditional medicine to treat respiratory ailments and wound infections is widely distributed throughout Southern Africa. Using bioassay-guided fractionation, an active compound ... -
The biological activity and essential oil composition of 17 Agathosma (Rutaceae) species
Viljoen, Alvaro M.; Moolla, Aneesa; van Vuuren, Sandy F.; van Zyl, Robyn L.; Başer, K. Hüsnü Can; Demirci, Betül; Trinder-Smith, Terry H. (Allured Publ Corp, 2006)The essential oil composition, antimicrobial, anti-inflammatory and cytotoxic activities of 17 indigenous Agathosma species (18 samples) were investigated in order to validate their use in traditional healing. The results ... -
Chemical composition of the wood and leaf oils from the "Clanwilliam Cedar" (Widdringtonia cedarbergensis J.A Marsh): A critically endangered species
Kamatou, G. P. P.; Viljoen, Alvaro M.; Özek, Temel; Başer, K. Hüsnü Can (Elsevier Science BV, 2010)Widdringtonia is the only genus of the 16 genera of Cupressaceae present in South Africa This genus is represented by three species in South Africa, W nodiflora, W schwarzu and W cedarbergensis (= W juniperoides) and the ... -
The composition and antimicrobial activity of the essential oil of the resurrection plant Myrothamnus flabellifolius
An investigation of the antibacterial and antifungal activity of Myrothamnus flabellifolius against eleven different pathogens showed inhibition of all micro-organisms except for Salmonella typhimurium and Alternaria ... -
Composition of the essential oil of Diosma prama I. Williams
Başer, K. Hüsnü Can; Demirci, Betül; Özek, Temel; Viljoen, Alvaro M.; Victor, J. E. (Allured Publ Corp, 2006)Hydrodistilled essential oils from the herbal parts of Diosma prama were analyzed by GC and GC/MS. Thirty compounds were characterized in chemotype A, representing 97.3% of the oil with 1,8-cineole + beta-phellandrene ... -
Composition of the essential oil of Euchaetis albertiniana I.J.M. Williams
Hydrodistilled essential oil from herbal parts of Euchaetis albertiniana was analyzed by GC and GC/M S. Fifty-seven compounds were characterized representing 97.7% of the oil with ß-pinene (17.5%), ß-pinene (14%), 1,8-cineole ... -
Composition of the essential oil of Euchaetis albertiniana IJM Williams
Başer, K. Hüsnü Can; Demirci, Betül; Özek, Temel; Viljoen, Alvaro M. (Allured Publ Corp, 2006)Hydrodistilled essential oil from herbal parts of Euchaetis albertiniana was analyzed by GC and GC/MS. Fifty-seven compounds were characterized representing 97.7% of the oil with alpha-pinene (17.5%), beta-pinene (14%), ... -
Composition of the essential oils of five Coleonema species from South Africa
Başer, K. Hüsnü Can; Demirci, Betül; Özek, Temel; Viljoen, Alvaro M.; Victor, J. E. (Allured Publ Corp, 2006)Hydrodistilled essential oils from the herbal parts of Coleonema album (Thunb.) Bartl. et H.L. Wendl., C. aspalathoides Juss et Don, C. calycinum (Steud.) I., Williams, C. pulchellum I. Williams (three samples) and C. ... -
Composition of the essential oils of three Acmadenia species from South Africa
Başer, K. Hüsnü Can; Demirci, Betül; Özek, Temel; Viljoen, Alvaro M.; Victor, J. E. (Allured Publ Corp, 2006)Hydrodistilled essential oils from the leaves of Acmadenia alternifolia Cham., A. obtusata (Thunb.) Batl. et H.L. Wendle and A. sheilae I. Williams were analyzed by GC and GC/MS. Twenty-two compounds were characterized in ... -
Composition of the essential oils of two Adenandra species from South Africa
Başer, K. Hüsnü Can; Demirci, Betül; Özek, Temel; Viljoen, Alvaro M.; Victor, J. E. (Allured Publ Corp, 2006)Hydrodistilled essential oils from the herbal parts of Adenandra obtusata Sond. and A. villosa (P.J.Bergius) Licht. ex Roem. et Schult. were analyzed by GC and GC/MS. Thirty-seven compounds were characterized in the oil ... -
The composition, geographical variation and antimicrobial activity of Lippia javanica (Verbenaceae) leaf essential oils
Viljoen, Alvaro M.; Subramoney, S; van Vuuren, Sandy F.; Başer, K. Hüsnü Can; Demirci, Betül (Elsevier Sci Ireland LTD, 2005)Lippia javanica is widely distributed throughout South Africa where it is used extensively in traditional herbal preparations. An infusion of the leaves is commonly used as a decongestant for colds and coughs. A preliminary ... -
The essential oil composition and chemotaxonomical appraisal of South African Pelargoniums (Geraniaceae)
Lalli, Jacqueline Y. Y.; Viljoen, Alvaro M.; Başer, K. Hüsnü Can; Demirci, Betül; Özek, Temel (Allured Publ Corp, 2006)A plethora of information is available on the essential oil composition of commercially grown Pelargonimus namely P. capitatum, P. graveolens and P. radens and their hybrids, while only a few chemical investigations have ... -
The essential oil composition and chemotaxonomy of Salvia stenophylla and its allies S. repens and S. runcinata
Salvia stenophylla Burch. ex Benth. (Lamiaceae) is a perennial aromatic herb, which is widespread in the high altitude areas of the central and eastern parts of South Africa. It is closely related to Salvia runcinata L. ... -
Essential oil composition and in vitro antimicrobial and anti-inflammatory activity of South African Vitex species
Nyiligira, E.; Viljoen, Alvaro M.; Başer, K. Hüsnü Can; Ózek, Temel; Van, Vuuren, S. F. (NISC Pty Ltd, 2004)The essential oil composition of Vitex pooara, V. rehmannii, V. obovata ssp. obovata, V. obovata ssp. wilmsii and V. zeyheri was determined using gas chromatography and mass spectrometry. The in vitro antimicrobial activity ... -
The essential oil composition of the roots and rhizomes of Siphonochilus aethiopicus
The composition of the essential oil obtained through hydrodistillation is reported for the roots and rhizomes of Siphonochilus aethiopicus. The major compounds in both the roots and the rhizomes are 1,8-cineole, (E)-ß-ocimene, ... -
The geographical variation and antimicrobial activity of African wormwood (Artemisia afra Jacq.) essential oil
Viljoen, Alvaro M.; van Vuuren, Sandy F.; Gwebu, Tebogo; Demirci, Betül; Başer, K. Hüsnü Can (Taylor & Francis Inc, 2006)The aerial parts of 16 individual Artemisia afra plants from four natural populations were hydrodistilled and the essential oil analyzed by GC/MS. The oil composition varied quantitatively and qualitatively within and ... -
Head-space volatiles of Gethyllis afra and G. ciliaris fruits ("kukumakranka")
Kamatou, G. P. P.; Viljoen, Alvaro M.; Özek, Temel; Başer, K. Hüsnü Can (Elsevier Science BV, 2008)The head-space volatiles of Gethyllis afra and G. ciliaris fruits collected in the South Western Cape Province of South Africa were analysed by solid phase micro-extraction (SPME) followed by gas chromatography coupled to ... -
Head-space volatiles of Marula (Scelerocarya birrea, subspecies caffra)
Kamatou, G. P. P.; Viljoen, Alvaro M.; Başer, K. Hüsnü Can (Elsevier Science BV, 2008)… -
Head-space volatiles of marula (Sclerocarya birrea subsp caffra)
Viljoen, Alvaro M.; Kamatou, G. P. P.; Başer, K. Hüsnü Can (Elsevier Science BV, 2008)Head-space volatiles of the fruit pulp and the whole fruits (skin volatiles) were investigated using solid phase micro-extraction (SPME) and GC-MS. The two major compounds in the fruit pulp were beta-caryophyllene (91.3%) ... -
In vitro biological activity and essential oil composition of four indigenous South African Helichrysum species
Lourens, ACU; Reddy, D; Başer, K. Hüsnü Can; Viljoen, Alvaro M.; Van, Vuuren, S. F. (Elsevier Sci Ireland LTD, 2004)Helichrysum species are used widely to treat various medical conditions. In this study, the anti-microbial, anti-oxidant (DPPH assay) and anti-inflammatory activity (5-lipoxygenase assay) of Helichrysum dasyanthum, Helichrysum ...
