Browsing by Author "Azam, F.M. Safiul"

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    Search for Phytoremediating Plants in a Textile Dye Polluted Area of Dhaka City, Bangladesh
    (The American-Eurasian Network for Scientific Information (AENSI), 2014-06-28) Seraj, Syeda; Azam, F.M. Safiul; Jahan, Farhana Israt; Nasrin, Dilruba; Jahan, Sharmin; Rahman, Shiblur; Morshed, Md. Tanvir; Rahmatullah, Mohammed
    Phytoremediation is a powerful yet affordable tool for clean-up of various contaminated sites through use of plants. Many plants exist that can not only survive in polluted areas but also hyperaccumulate industrial and domestic pollutants, which can range from heavy metals to oil and grease. Bangladesh is noted for its garment industries, but suffers from the problem of having areas, which are contaminated with textile dye wastes. Such an area exists in Savar of Dhaka city, the capital of Bangladesh. A survey was carried out in the area to search for plants growing within the textile dye contaminated site with the further objective determining the phytoremediation capacity of the plants through available database searches. Our survey found 15 plants distributed into 10 families to be growing in the contaminated area. Literature search showed that nearly all the plants have reported phytoremediation capacities, and as such can possibly provide an easy and affordable way to clean up textile dye contaminated sites.
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    Studies with Callus Induction of Vitex Negundo: an Aromatic Medicinal Plant
    (The American-Eurasian Network for Scientific Information (AENSI), 2011) Chowdhury, Farzana Begum; Azam, F.M. Safiul; Hassan, Md. Maruf; Jahan, Farhana Israt; Chowdhury, Anita Rani; Seraj, Syeda; Khatun, Zubaida; Rahmatullah, Mohammed
    Vitex negundo (Family: Verbenaceae) is a commonly used medicinal plant of Bangladesh. It has a broad range of uses in folk medicine. The plant parts possess diverse pharmacological activities including antimicrobial, analgesic, antiinflammatory, anti-fertility, antioxidant, antihyperglycemic, and hepato-protective effects. Considering its importance in folk medicine, an in vitro method of callus induction for this plant was developed. The objective was to investigate the effects of phytohormones for callus induction in the species. Explants (leaves and internodes) collected from field grown plants were cultured onto Murashige-Skoog’s (MS) medium following surface sterilization with 0.1% HgCl2 containing different concentrations and combination of 2, 4-dichlorophenoxy acetic acid (2, 4-D), a-naphthalene acetic acid (NAA), 6-benzylaminopurine (BAP); 3% sugar and 7% agar. Among the auxins, 2, 4-D [2.0 mg/l] supplemented in MS medium showed highest response for callogenesis with white and friable callus, whereas slower response than 2, 4-D, but friable and embryonic callus was obtained in MS + NAA [1.5 mg/l]. Quick and fastest callus growth was observed when the combination of 2, 4-D [3.0 mg/l] and NAA [1.0 mg/l] was added to MS medium. The only exception between the combinations was the variation in forming loose and wet callus. This callus induction protocol developed from our experiment can successfully play a role for large-scale culture of this shrub in vitro and isolation of bioactive compounds from this plant.