Institutional Publications

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Subject: search.filters.subject.Apocynaceae

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    2-Hydroxyacetophenone, the main component of the essential oil of the roots of Carissa opaca Stapf ex Haines
    (Taylor & Francis Group, 2009) Mallavarupu, Gopal R.; Mishra, Raghvendra K.; Chaudhary, Swati; Pandey, Richa; Gupta, Sarika; Kumar, Sushil
    The volatile oil obtained by hydrodistillation of the roots of Carissa opaca was analyzed by GC and GC/MS to study its composition. Thirty-five compounds representing 98.3% of the oil were identified. Si-gel chromatography of the oil yielded 2-hydroxyacetophenone, which was characterized by spectral methods (1H-, 13C-NMR and mass), as the main component, amounting to 89.5% of the oil.
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    Volatile compounds of leaves and flowers of periwinkle Catharanthus roseus (L.) G. Don from New Delhi
    (Wiley-Blackwell, 2006) Pandey-Rai, Shashi; Mallavarapu, Gopal Rao; Naqvi, A. A.; Yadav, Anju; Rai, Sanjay Kumar; Srivastava, Suchi; Singh, Digvijay; Mishra, Raghvendra; Kumar, Sushil
    The hydrodistilled waxy oils of the leaves and flowers of Catharanthus roseus (L.) G. Don cv. Nirmal plants grown at New Delhi were analysed by GC and GC–MS. A total of 52 compounds were identified, accounting for the 91.3% of the leaf oil.Among these the main constituents were as follows: (E,E )-2,4-hexadienal (7.7%), citronellol (7.9%), geraniol (7.9%), p-cresol (4.7%), (Z,E )-pentadecanal (6.6%), hexadecanoic acid (4.9%), palmitic acid (4.9%) and phytol (6.4%). A total of 41 compounds were identified, accounting for 99.4% of the flower oil, whose main constituents were heneicosane (20.8%), tricosane (37.9%), tetracosane (6.1%) and docosane (4.3%). A total of 24 compounds occurred in both the leaf and flower oils.