Browsing by Author "Chowdhury, Sayeeda Fahmee"

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    Characterization of phytoconstituents and potential bioactivity of Annona reticulata L. leaf extract
    (© 2016 Journal of Pharmacognosy and Phytochemistry, 2016) Shahriar, Mohammad; Khair, Nishat Zareen; Sheikh, Zara; Chowdhury, Sayeeda Fahmee; Kamruzzaman, Md.; Bakhtiar, Md. Shawkatul Islam; Chisty, Sharmin Jahan
    Annona reticulata (Annonaceae) is known as atafol in Bangla and custard apple in English is an important medicinal plant. It has been used traditionally in diarrhea, dysentery, cold, as abortifacient, insecticidal drug etc. In this present study, the leaf extracts of Annona reticulata were subjected to evaluation of the thrombolytic activity was assessed by using human erythrocyte and the results were compared with standard streptokinase (SK). The chloroform extract showed 36.82% clot lysis as compared to 93.79% clot lysis produced by standard streptokinase. The leaf extracts of Annona reticulata were subjected to evaluation of the membrane stabilizing activity by using human erythrocyte and the results were compared with standard anti-inflammatory drug, acetyl salicylic acid (ASA). In vitro membrane stabilizing activity for hypotonic solution induced haemolysis, the chloroform extract inhibited 75.15% haemolysis of RBCs as compared to 72.99% produced by acetyl salicylic acid (ASA) and during heat induced condition different organic soluble materials of Annona reticulata demonstrated methanol, ethanol and chloroform extract showed 68.81%, 72.06% and 78.17% inhibition of RBC hemolysis respectively whereas standard acetylsalicylic acid showed 70.87% inhibition of RBC haemolysis.
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    Characterization of phytoconstituents and potential bioactivity of Annona reticulata L. leaf extract
    (© 2016 Journal of Pharmacognosy and Phytochemistry, 2016) Shahriar, Mohammad; Khair, Nishat Zareen; Sheikh, Zara; Chowdhury, Sayeeda Fahmee; Kamruzzaman, Md.; Bakhtiar, Md. Shawkatul Islam; Chisty, Sharmin Jahan
    Annona reticulata (Annonaceae) is known as atafol in Bangla and custard apple in English is an important medicinal plant. It has been used traditionally in diarrhea, dysentery, cold, as abortifacient, insecticidal drug etc. In this present study, the leaf extracts of Annona reticulata were subjected to evaluation of the thrombolytic activity was assessed by using human erythrocyte and the results were compared with standard streptokinase (SK). The chloroform extract showed 36.82% clot lysis as compared to 93.79% clot lysis produced by standard streptokinase. The leaf extracts of Annona reticulata were subjected to evaluation of the membrane stabilizing activity by using human erythrocyte and the results were compared with standard anti-inflammatory drug, acetyl salicylic acid (ASA). In vitro membrane stabilizing activity for hypotonic solution induced haemolysis, the chloroform extract inhibited 75.15% haemolysis of RBCs as compared to 72.99% produced by acetyl salicylic acid (ASA) and during heat induced condition different organic soluble materials of Annona reticulata demonstrated methanol, ethanol and chloroform extract showed 68.81%, 72.06% and 78.17% inhibition of RBC hemolysis respectively whereas standard acetylsalicylic acid showed 70.87% inhibition of RBC haemolysis.
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    Phytochemical analysis, cytotoxic and in vitro antioxidant activity of erythrina variegate bark
    (© 2015 European Journal of Medicinal Plants, 2015-11) Shahriar, Mohammad; Khair, Nishat Zareen; Sheikh, Zara; Chowdhury, Sayeeda Fahmee; Kamruzzaman, Md.; Bakhtiar, Md. Shawkatul Islam; Chisty, Sharmin Jahan; Narjish, Syeda Najah; Akhter, Rumana; Akter, Nahia
    Aim:The objective of the present study was to investigate the phytochemical analysis, cytotoxic and antioxidant activities of the bark extracts of Erythrina variegate.Place and Duration of Study: The plant, E. variegate was collected from Botanical Garden, Mirpur, Dhaka and also from Curzon Hall, University of Dhaka, Bangladesh in June 2014 and then the sample was identified by the National Herbarium of Bangladesh, Mirpur, Dhaka (DACB; Accession Number- 36148). Methodology: Preliminary phytochemical screening was done for determining the nature of phytoconstituents. Brine shrimp lethality bioassay technique was done to study the cytotoxic properties. Aluminum chloride colorimetric method was applied for the determination of flavonoids and the total antioxidant ability was assessed by the phospho-molybdenum method. Results: Primary phytochemical analysis confirmed the presence of alkaloid, carbohydrate, glycosides and flavonoids. The extracts showed some toxicity to A. salina with LC50 values ranging from 1.41 to 3.66 μ g/ml which was compared with standard vincristine sulphate (VS, LC50 value 0.92 μg/ml). n-Hexane extract of E. variegate was found to contain highest amount of flavonoids (3.77±1.97 mg/gm; quercetin equivalent) and ethanol extract of E. variegate was found to have highest antioxidant acitivity (2.03±0.09 mg/gm ascorbic acid equivalent). Conclusion: It can be concluded that the plant extracts of E. variegate possess several antioxidant activities which justifies its use as folk medicine.
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    Phytochemical analysis, cytotoxic and in vitro antioxidant activity of erythrina variegate bark
    (© 2015 European Journal of Medicinal Plants, 2015-11) Shahriar, Mohammad; Khair, Nishat Zareen; Sheikh, Zara; Chowdhury, Sayeeda Fahmee; Kamruzzaman, Md.; Bakhtiar, Md. Shawkatul Islam; Chisty, Sharmin Jahan; Narjish, Syeda Najah; Akhter, Rumana; Akter, Nahia
    Aim:The objective of the present study was to investigate the phytochemical analysis, cytotoxic and antioxidant activities of the bark extracts of Erythrina variegate.Place and Duration of Study: The plant, E. variegate was collected from Botanical Garden, Mirpur, Dhaka and also from Curzon Hall, University of Dhaka, Bangladesh in June 2014 and then the sample was identified by the National Herbarium of Bangladesh, Mirpur, Dhaka (DACB; Accession Number- 36148). Methodology: Preliminary phytochemical screening was done for determining the nature of phytoconstituents. Brine shrimp lethality bioassay technique was done to study the cytotoxic properties. Aluminum chloride colorimetric method was applied for the determination of flavonoids and the total antioxidant ability was assessed by the phospho-molybdenum method. Results: Primary phytochemical analysis confirmed the presence of alkaloid, carbohydrate, glycosides and flavonoids. The extracts showed some toxicity to A. salina with LC50 values ranging from 1.41 to 3.66 μ g/ml which was compared with standard vincristine sulphate (VS, LC50 value 0.92 μg/ml). n-Hexane extract of E. variegate was found to contain highest amount of flavonoids (3.77±1.97 mg/gm; quercetin equivalent) and ethanol extract of E. variegate was found to have highest antioxidant acitivity (2.03±0.09 mg/gm ascorbic acid equivalent). Conclusion: It can be concluded that the plant extracts of E. variegate possess several antioxidant activities which justifies its use as folk medicine.