Showing papers on "Xylopia aethiopica published in 2005"
TL;DR: An ethnobotanical study of plants used by the traditional healers, herbalists and rural dwellers for the treatment of diabetes mellitus was conducted in the Eastern Cape Province and revealed the use of infusions from plant leaves and roots was the commonest method of herbal preparation.
Abstract: Aqueous and ethanolic extracts of Ocimum gratissimum and xylopia aethiopica were analyzed for their antimicrobial activities against five pathogenic organisms; Staphylococcus aureus, Escherichia coli, Streptococcus fecalis, Pseudomonas aeruginosa and Lactobacilli. Ethanolic extracts of O. gratissimum had a minimum inhibitory concentration (MIC) of 30 mg/ml against S. aureus, E. coli, P. aeruginosa and lactobacilli while for S. fecalis the MIC was 15 mg/ml. Aqueous extracts of O. gratissimum had an MIC of 12.5 mg/ml against S. aureus, E. coli and S. fecalis, while for P. aeruginosa and lactobacilli the MIC was 6.25 and 25 mg/ml, respectively. Ethanolic extracts of X. aethiopica showed an MIC of 10 mg/ml in the five organisms tested. While its aqueous extract gave an MIC of 30 mg/ml for S. aureus and Lactobacilli, and 15 mg/ml for E. coli, P. aeruginosa and S. fecalis. Our findings suggest that the anti-microbial activity of these spices reside in their aqueous fractions and also indicate that very low concentrations are required to achieve antimicrobial effects.
175 citations
TL;DR: Hot water extracts obtained from leaf and seed of uda and Ginger were found to be fungitoxic against the fungi and suppressed the growth of these fungi in culture and reduced rot development in yam tubers.
Abstract: Investigation was carried out to test the potency of some plant extracts for the control of yam tuber rot caused by Fusarium oxysporum, Aspergillus niger and Aspergillus flavus. Hot water extracts were obtained from leaf and seed of uda (Xylopia aethiopica) and Ginger (Zinigiber officinale), and were found to be fungitoxic against the fungi. The extracts of suppressed the growth of these fungi in culture and reduced rot development in yam tubers.
126 citations
TL;DR: Five local spices were evaluated in the laboratory for their ability to protect stored maize against infestation by S. zeamais to assess for mortality, progeny emergence, damage and repellency.
Abstract: Five local spices ( Piper guineense, Allium sativum, Afromomum melequata, Xylopia aethiopica and Tetrapleura tetraptera ) were evaluated in the laboratory for their ability to protect stored maize against infestation by S. zeamais . Ground products of the spices were applied as direct admixtures at two concentration levels of 1% and 5% to assess for mortality, progeny emergence, damage and repellency. At 1% and 5% concentration, P. guineense caused significant (P P. guineensewere strongly repellent to the weevils while the other three spices showed moderate repellent activity. There was a significant (P P. guineense, A. sativum and T. tetrapleura . Progeny production was also significantly (P P. guineense than the other four spices and the control. The possible protectant potentials of the five spices are discussed. Journal of Applied Sciences and Environmental Management Vol. 9(1) 2005: 165-168
82 citations
Journal Article•
TL;DR: Some of the essential oils of plant species tested are promising for pest control in farmer granaries, however, further investigations are to be done on formulation and side effects.
Abstract: Essential oils from seven plants species currently found in Cameroon were extracted by steam distillation and tested for their insecticidal activities against Sitophilus zeamats Motsch. Responses varied with the test applied and the plant species. For the contact toxicity, the acetone was used in order to dilute the pure essential oil. Formulations of 1% of essential oils of Xylopia aethiopica and Ocimum gratissimum were the most toxic and led to 96 and 98% of mortality respectively after 24 h. There was no death in control (0% of mortality). Fumigation test were done by applying 300 microl of pure essential oils in the bottom of closed 800 ml glass containers. In that case, the essential oil of Hyptis spicigera was the most toxic (fumigant) after 48 hours of fumigation followed by Annona seregalensis and Xylopia aethiopica 96 and 95% of mortality respectively. Some of the essential oils of plant species tested are promising for pest control in farmer granaries. However, further investigations are to be done on formulation and side effects.
34 citations
01 Jan 2005
TL;DR: Aqueous and ethanolic extracts of Ocimum gratissimum and xylopia aethiopica were analyzed for their antimicrobial activities against five pathogenic organisms; Staphylococcus aureus, Escheria coli, Streptococcus fecalis, Pseudomonas aeruginosa and Lactobacilli.
Abstract: Aqueous and ethanolic extracts of Ocimum gratissimum and xylopia aethiopica were analyzed for their antimicrobial activities against five pathogenic organisms; Staphylococcus aureus, Escherichia coli, Streptococcus fecalis, Pseudomonas aeruginosa and Lactobacilli. Ethanolic extracts of O. gratissimum had a minimum inhibitory concentration (MIC) of 30 μg/ml against S. aureus, E. coli, P. aeruginosa and lactobacilli while for S. fecalis the MIC was 15 μg/ml. Aqueous extracts of O. gratissimum had an MIC of 12.5 μg/ml against S. aureus, E. coli and S. fecalis, while for P. aeruginosa and lactobacilli the MIC was 6.25 and 25 μg/ml, respectively. Ethanolic extracts of X. aethiopica showed an MIC of 10 μg/ml in the five organisms tested. While its aqueous extract gave an MIC of 30 μg/ml for S. aureus and Lactobacilli, and 15 μg/ml for E. coli, P. aeruginosa and S. fecalis. Our findings suggest that the anti-microbial activity of these spices reside in their aqueous fractions and also indicate that very low concentrations are required to achieve antimicrobial effects.
17 citations
Journal Article•
TL;DR: Communities bordering the Pre-Suhien Forest Reserve notably, Abrafo-Odumase, Mfuom and Ankaako use these plant species for the treatment of stomach and bronchial troubles as well as rheumatism.
Abstract: Morphohistological studies of two forest species of Annonaceae have been reported; the species coverd are Xylopia aethiopica (Dunal) A. Rich and X. quintassii Engl. And Diels. Wood fibres range in length from 965 ± 4μm in X. aethiopica to 853 ± 3μm X. quintassii. Leaves are hypostomatic with paracytic stomata found only in the lower epidermis. The epidermal cell walls are straight. Epidermal crystals are cluster crystals, which are present in all the species. Communities bordering the Pre-Suhien Forest Reserve notably, Abrafo-Odumase, Mfuom and Ankaako use these plant species for the treatment of stomach and bronchial troubles as well as rheumatism.
15 citations
TL;DR: The inhibitory effects of seven diterpenes, belonging to three different structural classes and isolated from the bark of Xylopia aethiopica, were investigated against the enzymes prolyl endopeptidase and α-thrombin.
Abstract: The inhibitory effects of seven diterpenes, belonging to three different structural classes and isolated from the bark of Xylopia aethiopica, were investigated against the enzymes prolyl endopeptidase (PEP) and α-thrombin. Five compounds exhibited inhibitory activity against them.
11 citations
TL;DR: The essential oil from the fruits of Xylopia aethiopica (Dunal) A. Richard collected from Ibadan, South-West Nigeria was investigated by means of GC, GC-MS, 1H and 13 C-NMR.
Abstract: The essential oil from the fruits of Xylopia aethiopica (Dunal) A. Richard collected from Ibadan, South-West Nigeria was investigated by means of GC, GC-MS, 1H and 13 C-NMR. The main constituents were β-santalol (14.5%), α-cadinol (13.0%), benzyl benzoate and dodecanoic acid (10.0%). The isolation and characterization of Zerumbone (4.0%), a known sesquiterpene ketone, being described for the first time as constituent of the plant, may point out new possibilities of the medicinal importance of the volatile oil of the plant.
9 citations