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Essential oils and essential oil plants have been used as medicine, aroma chemicals, preservatives, pheromones and attractants, cosmetics, coloring agent, in control of sanitary problems or as indicators of fresh water toxins produced by cyanobacteria etc. Essential oils are the complex mixture of isomers of hydrocarbons, mono- and sesqui-terpenes etc. In the current scenario separation of non- and semi-polar isomers is a big challenge. The work on aromatic plants present in this book was derived through extensive use of selective silver nitrate column chromatography, derivatization, inverted...

Juniperus communis, Hedychium spicatum and Valeriana jatamansi are important medicinal and aromatic plants from north-wester Himalayas India. The essential oils (EOs) composition, isolation of new molecules and biological activities (cytotoxic and antibacterial) were carried out on targeted plants. HDA application will enhance the net return of EOs of V. jatamansi (425.54 to 459.59 USD/kg), H. spicatum (69.07 to 77.71 USD/Kg) and J. communis (96.26 to 101.74 USD/Kg), respectively, compared to NC (normal Clevenger apparatus). The results showed that HDA method is economically more suitable as...

Natural antioxidants have gained lot of interest among consumers and the scientific community because epidemiological studies have indicated that frequent consumption of natural antioxidants is associated with reduction of cardiac and other disorders with no side effects. A number of studies are going on throughout the world to identify pharmacologically potent source of antioxidant compounds. Thus we can swear the population that drugs bringing into the market are safe and effective.