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Articles by M. A. Gafur
Total Records ( 3 ) for M. A. Gafur
  M. Zakir Sultan , Naznin Ara Khatune , Zakia Sultana Sathi , Md. Shah Alam Bhuiyan , M. Golam Sadik , M. Akteruzzaman Choudury , M. A. Gafur and Md. Aziz Abdur Rahman
  The ethyl acetate extract of yeast extract-glucose broth medium of an Actinomycetes strain, Streptomyces yielded a reddish yellow antibiotic metabolite by chromatographic technique and was identified as 2 N-butanamide 3-methyl 4-methoxy 5-β-L-arabinosyl propanophenone (MZ-4) on the basis of spectral data. The compound exhibited significant antibacterial activity against five gram positive and nine gram negative bacteria when compared with standard Kanamycin antibiotic. The zone of inhibition were observed between 17 to 20 mm. The minimum inhibitory concentration (MIC) of the compound was determined against four gram positive and gram negative bacteria and the values were found between 32 and 64 μg ml-1.
  Md. Aziz Abdur Rahman , A. T. M. Zafrul Azam and M. A. Gafur
  Two flavonoidal compounds, pectolinarigenin (CA-2) and hispidulin (CA-3) isolated from the stem and root of the plant Clerodendrum indicum. The petroleum ether, chloroform and ethyl acetate extracts of the same portion of the plant were screened against twelve pathogenic bacteria for their antibacterial activities. The test materials found to be significant in vitro antibacterial activities against almost all gram positive and gram negative bacteria. The zones of inhibition produced by the test materials were found to be between 6 mm and 22 mm. The MIC values of the isolated compounds were also determined against four test organisms for CA-2 and two test organisms for CA-3. The values were found to be between 64 μg/ml and 128 μg/ml.
  Zakia Sultana Sathi , Naoki Sugimoto , Md. Ibrahim Khalil and M. A. Gafur
  Chloroform extract of the culture filtrate of Streptomyces sp. and chromatographic analysis has lead to the isolation of an antimicrobial compound. The structure of the compound was identified as 4-hydroxy nitrobenzene from its IR, UV, 1H-NMR, 13C-NMR, EIMS, HMBC, HMQC data. This is the first report of isolation of 4-hydroxy nitrobenzene from natural sources.
 
 
 
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