Publications by authors named "Archana M Das"

Copper bionanocomposites (CBNCS) were synthesized using Ipomoea carnea- sourced nanocellulose as support via an eco-friendly and cost-effective method. X-ray Diffractometer (XRD) pattern of CBNCS confirmed the octahedral structure of CuO, the face-centered cubic (FCC) crystal structure of Cu(0). XRD also revealed the crystal lattice of cellulose II.

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An environment-friendly and economically sound method was developed to achieve a multi-functional ZnO nanoparticles (ZnO NPs) using water extract of Livistona jekinsiana. The ZnO NPs absorbed maximum wavelength of light at 332 nm in UV-Visible spectroscopy (UV/Vis). X-Ray Diffraction (XRD) pattern revealed the crystallinity of the nanoparticles with the crystallite size around 22.

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The fruits of Bl. (Elaeocarpaceae) are edible and are normally prescribed for treatment of diseases. The medicinal uses of the fruit create considerable quantities of seeds as wastes.

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In the present systematic study, silver nanoparticles have been synthesized using the fruits of Alpinia nigra. Apart from the presence of saponins, glycosides, alkaloids, steroids, the extract of A. nigra fruits are rich in polyphenols.

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The genus belongs to the Elaeocarpaceae family, consists of about 350 species distributed in the tropical and subtropical regions. Plants in the genus, reportedly, contain compounds known for various biological activities like affinity for the δ-opioid receptor, antioxidant, cytotoxicity and antimicrobial activities. , commonly known in India as 'Indian Olive' is a medicinal plant widely distributed through Eastern Asia and the pacific.

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Cellulose extracted from the rhizomes of Alpinia nigra was utilized in the synthesis of cellulose acetate. Furthermore, the cellulose acetate reacted with organophillic montmorillonite to form a composite. All the products including cellulose, cellulose acetate and the composite were characterized with the help of standard analytical techniques.

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Plants and their extracts play an important role in the green synthesis of nanoparticles mainly because of their environmental benignity. Based on plant extracts number of metal nanoparticles have been synthesized. In our study, we report a green technique for the synthesis of gold nanoparticles using the aqueous extracts of Alpinia nigra leaves and their photocatalytic activities.

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Highly efficient copper nanoparticles supported over nanocellulose have been prepared by a simple chemical reduction method. The cellulose was extracted from the inner stem of Hibiscus sabdariffa and used as a polymer matrix for the synthesis of copper nanoparticles. The formation of the nanoparticles was validated through different characterization techniques like X-ray diffraction (XRD), Fourier transform infra-red spectroscopy (FTIR), UV-vis spectroscopy (UV) and Energy dispersive X-Ray Spectroscopy (EDX).

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Cellulose was extracted from agricultural waste like Rice Husk (RH) a renewable resource of India as well as in the World. Cellulose was isolated from rice husk (RH) using eco-friendly method with Montmorillonite K-10/LiOH solution and bleaching with 2% H2O2. The reaction parameters like time, temperature, catalyst, acid and alkali were studied to evaluate the optimum reaction conditions 6h, 80°C, 20% maleic acid and 10% LiOH (in H2O) for time, temperature, acid and alkali, respectively.

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Cellulose acetate was synthesized from rice husk by using a simple, efficient, cost-effective and solvent-free method. Cellulose was isolated from rice husk (RH) using standard pretreatment method with dilute alkaline and acid solutions and bleaching with 2% H2O2. Cellulose acetate (CA) was synthesized successfully with the yield of 66% in presence of acetic anhydride and iodine as a catalyst in eco-friendly solvent-free conditions.

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A facile synthesis of the side chain of loteprednol etabonate, namely, chloromethyl-17α-[(ethoxycarbonyl))oxy]-11β-hydro of loteprednol etabonate, viz., chloromethyl-17α-[(ethoxycarbonyl))oxy]-11xy-3-oxoandrosta-1,4-diene-17β-carboxylate--an ocular soft corticosteroid, has been described starting from a 20-oxopregnane, namely, 3β-acetoxy-pregn-5(6),16(17)-diene-20-one (16-dehydropregnenolone acetate, i.e.

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Regioselective synthesis of novel steroidal anti-inflammatory ante drug analogues, viz., [16alpha,17alpha-d]-isoxazolines 1(a-h) and 2(a-h) prepared in a single step in good yield by the reaction of 16-dehydropregnenolone acetate (16-DPA) 1 or related 21-chloro-20-oxopregnane 2 with various aldoximes (a-h) in presence of chloramine-T in refluxing ethanol.

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