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Articles by Seatara Khatun
Total Records ( 2 ) for Seatara Khatun
  A.K.M. Nasimul Islam , M. Abbas Ali , Abu Sayeed , Syed M. Abdus Salam , Anwarul Islam , Motiur Rahman , G.R.M. Astaq Mohal Khan and Seatara Khatun
  A terpenoid, 3-oxo-(20S, 24S)-epoxydammarane-19,25-diacetate (CP-1) isolated from the chloroform extract of barks of Caesalpinia pulcherrima was characterized on the basis of spectral data coupled with chemical evidence. The compound showed significant antibacterial activity against a number of pathogenic bacteria and prominent antifungal activity against a few fungi. The minimum inhibitory concentration (MIC) values against Bacillus cereus and Shigella dysenteriae were 16 μg ml-1 and 32 μg ml-1 respectively. The compound was found cytotoxic against brine shrimp and LC50 value was 8.41 μg ml-1. These findings suggested for further clinical trial.
  Kawsar Uddin , Abu Sayeed , Anwarul Islam , Aziz Abdur Rahman , Seatara Khatun , G.R.M. Astaq Mohal Khan and Md. Golam Sadik
  The chromatographic examination of the ethyl acetate extract of a local plant Oroxylum indicum Vent. (Family: Bignoniaceae) has led to the isolation of two flavonoids: 2,5-dihydroxy-6,7-dimethoxy flavone (Compound 1) and 3, 7, 3`, 5`-tetramethoxy-4`-hydroxy flavone (Compound 2). The in vitro anti microbial activity of crude petroleum ether, ethyl acetate and methanol extracts and compound 1 and 2 was screened against fourteen (five Gram-positive and nine Gram-negative) pathogenic bacteria and seven pathogenic fungi using the disk diffusion method. The zones of inhibition produced by the crude petroleum ether, ethyl acetate and methanol extracts and compound 1 and 2 against pathogenic bacteria were found between 8-16, 8-19, 0-8, 9-18 and 9-21 mm, respectively and against pathogenic fungi, 8-20, 8-18, 9-15, 9-20 and 7-18 mm, respectively. The crude petroleum ether and ethyl acetate extracts and compound 1 and 2 showed mild to moderate activity against all bacteria and fungi, whereas the methanol extract showed little activity against bacteria but moderate activity against fungi. The minimum inhibitory concentration (MIC) of the compound 1 and 2 were measured against Bacillus subtilis, Staphylococcus aureus, Escherichia coli and Shigella dysenteriae and the values were found to be between 64-128 μg/ml.
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