• Shanta Mehrotra

      Articles written in Proceedings – Plant Sciences

    • Pharmacognostic studies on the flower ofWoodfordia fruticosa Kurz

      Usha Shome Shanta Mehrotra H P Sharma

      More Details Abstract Fulltext PDF

      Pharmacognosy of the flowers ofWoodfordia fruticosa Kurz has been carried out to lay down standards for the genuine drug “Dhataki”. The paper deals with the detailed anatomy of the pedicel and various floral appendages, pollen ornamentation, seed with unusual mucilage hairs and embryo characters. Histochemical tests and fluorescence characteristics are also described. Thin layer bidirectional chromatography of petroleum ether, benzene, chloroform, alcohol and water extractives was performed. Other parameters studied include physicochemical constants, e.g. ash values, percentages of tannins, sugars and different extractives.

    • Pharmacognostic studies on the flower ofMesua ferrea L.

      Usha Shome Shanta Mehrotra H P Sharma

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      Stamens ofMesua ferrea L. constitute the genuine ‘Nagkeshara’ of Ayurveda, a drug considered to be astringent, stomachic and expectorant. The present communication deals with detailed pharmacognosy of the drug and includes morphological, anatomical as well as certain phytochemical characters of the floral parts ofMesua ferrea. Some of the distinguishing characters are: cortical fibbres, numerous resin canals and calcium oxalate crystals in the cortex and pith of the pedicel; anamocytic, anisocytic or paracytic stomata on sepals and petals; and 3-(4-) zonocolporate pollen grains with reticulate exine surface. Fluorescence analysis, behaviour of the drug with certain chemical reagents and thin layer chromatography were also carried out.

    • Pharmacognostic studies on ‘Sappan’ (Caesalpinia sappan Linn.) and its market samples

      Shanta Mehrotra H P Sharma

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      ‘Sappan’ is considered a valuable astringent, alterative tonic, emmenagogue, blood purifier and anticoagulant. It strengthens the bones and teeth and is also used in boils and eruptions. The drug is ascribed to the heartwood ofCaesalpinia sappan. Accordingly, a detailed pharmacognosy ofCaesalpinia sappan was carried out and eight market samples of ‘Sappan’ procured from various parts of the country were evaluated with reference to the genuine drug. The present studies revealed that out of all the market samples studied only those from Bombay (B-II), Rishikesh and Hardwar resembled the genuine drug and were therefore identified as genuineC. sappan. The remaining samples were identified as differentPterocarpus species,Gluta travancorea Bedd. andToona ciliata M. J. Roem.

    • Pharmacognostic studies on the flower ofCalophyllum inophyllum Linn

      Shanta Mehrotra Usha Shome H P Sharma

      More Details Abstract Fulltext PDF

      Calophyllum inophyllum Linn is one of the important Ayurvedic drug plants of which practically all parts are used medicinally. Among these flowers and stamens are often used as a substitute for ‘Nagkesara’. This paper deals with a detailed pharmacognosy of the flower ofC. inophyllum. Physico-chemical constants, preliminary phytochemical studies, fluorescence analysis, behaviour of powdered drug with differnt chemical reagents and thin layer chromatography were also carried out.

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