Objective:To explore the in vitro antimicrobial potential of Holigarna arnottiana(H.arnottiana)against human and shrimp pathogenic bacteria and use GC-MS analysis to elucidate its antimicrobial principles.Methods:In ... Objective:To explore the in vitro antimicrobial potential of Holigarna arnottiana(H.arnottiana)against human and shrimp pathogenic bacteria and use GC-MS analysis to elucidate its antimicrobial principles.Methods:In the present study,organic extract of H.arnottiana was examined for in vitro antimicrobial potency against five clinical human pathogens,seven species of human type culture pathogens,six pathogenic Vibrio strains isolated from moribund tiger shrimp(Penaeus monodon)and seven type cultures(Microbial Type Culture Collection,MTCC)of prominent shrimp pathogens.Results:The extraction of H.arnottiana with ethyl acetate yielded bioactive crude extract that efficiently repressed the growth of all tested pathogens.Among the pathogens tested,shrimp pathogens were the most susceptible organisms while clinical pathogens were found to be a little resistant.The chemical constituents of the H.arnottiana were analysed by GC-MS which revealed the presence of major compounds such as 3,7.1 l,15-tetramethyl-2-hexadecen-l-ol(42.1%),l-lodo-2-methylundecane(34.4%)and squalene(11.1%)which might have a functional role in the chemical defence against microbial invasion.Conclusions:Based on the finding it could be inferred that H.arnottiana would be a reliable source for developing shrimp and human bio-therapeutics in future.展开更多
Abstract: Objective To study the chemical constituents from the barks of Mangifera indica. Methods The constituentswere separated and purified by different methods of chromatography, and their structures were elucida... Abstract: Objective To study the chemical constituents from the barks of Mangifera indica. Methods The constituentswere separated and purified by different methods of chromatography, and their structures were elucidated by IR, MS,1D and 2D NMR techniques. Results Six compounds were isolated from the barks of M. indica. Their structureswere identified as mangiferone (1), mangiferin (2), myricetin (3), myricitrin (4), rutin (5), and quercetin (6).Conclusion Mangiferone (1) is a new diarylheptanoid compound isolated from the barks of M. indica.展开更多
基金Supported by Senior Research Fellowship,Council of Scientific and Industrial Research(CSIR).New Delhi(File No.09/475(0149)/2010-EMR-I)
文摘 Objective:To explore the in vitro antimicrobial potential of Holigarna arnottiana(H.arnottiana)against human and shrimp pathogenic bacteria and use GC-MS analysis to elucidate its antimicrobial principles.Methods:In the present study,organic extract of H.arnottiana was examined for in vitro antimicrobial potency against five clinical human pathogens,seven species of human type culture pathogens,six pathogenic Vibrio strains isolated from moribund tiger shrimp(Penaeus monodon)and seven type cultures(Microbial Type Culture Collection,MTCC)of prominent shrimp pathogens.Results:The extraction of H.arnottiana with ethyl acetate yielded bioactive crude extract that efficiently repressed the growth of all tested pathogens.Among the pathogens tested,shrimp pathogens were the most susceptible organisms while clinical pathogens were found to be a little resistant.The chemical constituents of the H.arnottiana were analysed by GC-MS which revealed the presence of major compounds such as 3,7.1 l,15-tetramethyl-2-hexadecen-l-ol(42.1%),l-lodo-2-methylundecane(34.4%)and squalene(11.1%)which might have a functional role in the chemical defence against microbial invasion.Conclusions:Based on the finding it could be inferred that H.arnottiana would be a reliable source for developing shrimp and human bio-therapeutics in future.
基金The authors would like to thank the Ministry of Agriculture and Ago-Based Industry (MOA) for the research Science Fund grant to study "Biodiversity of Bouea macrophylla and B. oppositifolia in Peninsular Malaysia" (05-03-08-SF 1086). Special thanks are also due to Microtechnique and Botany Laboratory staff at the Strategic Resources Research Centre for their help in the manuscript preparation and lab work.
基金Bureau of Chinese Traditional Medicine of Guangdong Province,Guangdong,China(2010101)
文摘 Abstract: Objective To study the chemical constituents from the barks of Mangifera indica. Methods The constituentswere separated and purified by different methods of chromatography, and their structures were elucidated by IR, MS,1D and 2D NMR techniques. Results Six compounds were isolated from the barks of M. indica. Their structureswere identified as mangiferone (1), mangiferin (2), myricetin (3), myricitrin (4), rutin (5), and quercetin (6).Conclusion Mangiferone (1) is a new diarylheptanoid compound isolated from the barks of M. indica.
基金Acknowledgements This study was supported by grants from the National Basic Research Program of China (973 Program, grant no. 2007CB411601), the National Natural Science Foundation of China (grant nos. 30625004 and 40771073 to H. Sun), the Yunnan Natural Science Foundation (grant no. 2008CC013), and the John D. and Catherine T. MacArthur Foundation (to J. Wen). Laboratory work was carried out in and partially supported by the Laboratory of Analytical Biology of the National Museum of Natural History, Smithsonian Institution, Washington DC, USA. We thank Quentin LUKE for his kind assistance in collecting samples in Kenya.