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Anthraquinones from Cell Suspension Culture of Morinda elliptica
Jasril, Jasril,Lajis, N.H.,Abdullah, M.A.,Ismail, N.H.,Ali, A.M.,Marziah, M.,Ariff, A.B.,Kitajima, M.,Takayama, H.,Aimi, N. The Korean Society of Pharmacognosy 2000 Natural Product Sciences Vol.6 No.1
The chemical investigation on the cell suspension culture of Morinda elliptica L. yielded eight anthraquinones, two of which, anthragallol-1,2-dimethyl ether (3) and purpurin-1-methyl ether (4), have not been isolated from the original plant. Other compounds isolated include nordamnacanthal (1), alizarin-1-methyl ether (2), rubiadin (5), soranjidiol (6), $lucidin-{\omega}-methyl$ ether (7), and morindone (8). The structures of anthraquinones were established based on spectral studies.
Brine Shrimp Toxicity of Fractionated Extracts of Malaysian Medicinal Plants
Mukram M. Mackeen,Mohammad N. Khan,Zainudin Samadi,Nordin H. Lajis 한국생약학회 2000 Natural Product Sciences Vol.6 No.3
The methanol, dichloromethane, petroleum ether, 90% methanol and 1-butanol fractions of 40 Malaysian medicinal plants belonging to 25 families were tested for brine shrimp lethality. Various parts and fractions of eight (20%) plants, viz. Annona muricata, Cerbera odollam. Calophyllum inophyllum, Entada phaseoloides, Pithecellobium jiringa, Crotolaria retusa, Morinda elliptica and Sellaginella willdenovii showed very strong toxicity (LC_(50):$lt;100 ppm). The methanol extract of the seed of Calophyllum inophyllum showed exceptionally toxic activity (LC_(50): 5 ppm).
Antimicrobial and Cytotoxic Activities of Some Malaysian Flowering Plants
Jasril,S. M. Mohamed,M. M. Mackeen,N. H. Lajis,A. A. Rahman,A. M. Ali 한국생약학회 1999 Natural Product Sciences Vol.5 No.4
A total of 43 extracts from 21 species of Malaysian flowering plants were screened for antimicrobial and cytotoxic activities. Antimicrobial activity was tested against fungi, including yeast and candida, as well as Gram-positive and Gram-negative bacteria, and cytotoxicity was assayed using the CEM-SS and HT-29 cell lines. The methanol extracts of the roots and stems of Plumeria acutifolia showed the highest antimicrobial activity, i.e. against Saccharomyces cerevisiae and Candida lipolytica, and mostly moderate activity against the other microbes such as Aspergillus ochraceous and Saccharomyces lipolytica. Phyllanthus emblica also showed moderate activity especially that of the methanol extracts. The methanol extract of the roots of Plumeria acutifolia showed the strongest cytotoxic activity (CD_(50)=3㎍/㎖). Most of Zingiberaceae species gave negative results for antimicrobial activity and showed low cytotoxic activity.
A. M. Ali,L. Y. Mooi,K. Yih Yih,A. W. Norhanom,K. Mat Saleh,N. H. Lajis,A. M. Yazid,F. B. H. Ahmad,U. Prasad 한국생약학회 2000 Natural Product Sciences Vol.6 No.3
The extracts of Carica papaya (flower), Barringtonia macrostachya (leaves), Coleus tuberosus (tuber), Mangifera indica (fruit skin) and Eugenia polyantha (leaves) showed strong in vitro anti-tumor promoting activity when assayed using Raji cells (Mooi et al., 1999). The anti-tumor promoting activity of the crude extracts was further analyzed by immunoblotting analysis of Raji cells carrying Epstein-Barr virus genome. The expression of early antigens diffuse (EA-D) and early antigens restricted (EA-R) was determined by performing western blotting of treated Raji cells with human sera of nasopharyngeal carcinoma patients. All the plant extracts were shown to be able to suppress both EA-D and EA-R.