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Articles by Md. Ekramul Islam
Total Records ( 2 ) for Md. Ekramul Islam
  Md. Ekramul Islam , Naznin Ara Khatune and Md. Ekramul Haque
  The research work was conducted to investigate the in vitro anti-bacterial activity of a glycoside, phenyl ethyl β-D-glucopyranoside, isolated from the stem of the plant Sida rhombifolia. The petroleum ether (C2H5-O-C2H5), chloroform (CHCl3) and ethylacetate (CH3-CO-O-C2H5) extracts of the plant were screened against eleven pathogenic bacteria for their antimicrobial activities. The test materials were found to be significant in vitro antibacterial activities, against most of the test bacteria. The zones of inhibition produced by the test materials were found to be between 8 and 24 mm. The minimum inhibitory concentration (MIC) values of the isolated compound was also determined against Bacillus subtilis, Sarcinia lutea, Escherichia coli and Shigella shiga which were 128, 64, 64 and 128 ยตg ml-1, respectively.
  Mst. Shahnaj Parvin , Md. Ekramul Islam , Md. Motiur Rahman and Md. Ekramul Haque
  The pure compound annotemoyin-1 isolated from the chloroform extract of the seeds of Annona squamosa Linn. was evaluated for its pesticidal activity against both adults and different instars of Tribolium castaneum (Herbst) under laboratory condition. The LD50 values of the pure compound were determined both for adults and different instars of larvae. The LD50 values of the compound were 579.67, 394.89, 243.10, 612.92, 366.95, 315.18, 636.12, 423.30, 333.67, 684.88, 449.28, 101.68, 742.69, 525.93, 199.41, 792.38, 609.08, 191.70, 827.43, 615.36, 221.13, 920.54, 693.10 and 429.42. These results demonstrated that the earlier instars were more sensitive to the compound than those of late instars as well as adults.
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