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      Chemical Composition of the Essential Oils of Cyperus rotundus L. from South Africa

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          Abstract

          The essential oils from the rhizomes of Cyperus rotundus L. collected from two different locations (Empangeni-A and KwaDlangezwa-B; both in the Kwa-Zulu Natal Province of South Africa) were obtained by hydrodistillation and analyzed by capillary GC and GC/MS. Forty-one and 43 components were identified, representing 89.9% and 92.0% of sample A and sample B, respectively. α-Cyperone (11.0%), myrtenol (7.9%), caryophyllene oxide (5.4%) and β-pinene (5.3%) were major compounds in the oil of sample A. The main constituents of the oil of sample B were β-pinene (11.3%), α-pinene (10.8%), α- cyperone (7.9%), myrtenol (7.1%) and α-selinene (6.6%).

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          Methods to study the phytochemistry and bioactivity of essential oils.

          Mouhssen Lahlou (2004)
          Many essential oils are extracted, analysed and their main components are identified, characterised and then published without any biological testing whatsoever. Their useful biological activities can remain unknown for years. Yet, the search for these activities often increases our knowledge of the potential use of oils in therapeutics. Therefore, there is a real need for a simple, reliable and reproducible methods to study the bioactivity of essential oils and their constituents which can detect a broad spectrum of action or specific pharmacological activities in aromatic plants. These methods can then be employed by natural product chemists, pharmacologists and biologists to conduct their scientific research and to valorize natural products. Standardisation of some of these methods is therefore desirable to permit more comprehensive evaluation of plant oils, and greater comparability of the results obtained by different investigators.
          Article 0 comments Cited 67 times – based on 0 reviews     Review now
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            Indigenous knowledge and uses of medicinal plants by local communities of the Kali Gandaki Watershed Area, Nepal.

            Ananda Joshi, Kunjani Joshi (2000)
            A field survey was conducted in the villages of Ramdi, Malunga, Balam, Beltari, Mirmi, Burgha and Ridi in the Kali Gandaki watershed, Nepal; 48 medicinal plants belonging to 31 families were reported, each with local names, traditional uses, methods of preparation and route of administration. Traditional medicine remains an integral part of the health system in these areas. Local people have remarkable knowledge of species identity and their uses as crude drugs.
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              Influence of environmental and genetic factors on the stability of essential oil composition of Thymus pulegioides

              P.R. Venskutonis, K Loziene (2005)
              Article 0 comments Cited 30 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Molecules
                Journal ID (iso-abbrev): Molecules
                Journal ID (publisher-id): molecules
                Title: Molecules
                Publisher: Molecular Diversity Preservation International
                ISSN (Electronic): 1420-3049
                Publication date (Electronic): 06 August 2009
                Publication date Collection: August 2009
                Volume: 14
                Issue: 8
                Pages: 2909-2917
                Affiliations
                Department of Chemistry, University of Zululand, KwaDlangezwa 3886, South Africa
                Author notes
                [* ]Author to whom correspondence should be addressed; E-mail: aoyedeji@ 123456pan.uzulu.ac.za
                Article
                Publisher ID: molecules-14-02909
                DOI: 10.3390/molecules14082909
                PMC ID: 6254851
                PubMed ID: 19701133
                SO-VID: afcda5a7-7246-46ff-bf5a-f8fabbac9a87
                Copyright © © 2009 by the authors;
                License:

                licensee Molecular Diversity Preservation International, Basel, Switzerland. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license ( http://creativecommons.org/licenses/by/3.0/).

                History
                Date received : 12 June 2009
                Date revision received : 31 July 2009
                Date accepted : 06 August 2009
                Categories
                Subject: Article

                Keywords: cyperus rotundus,cyperaceae,essential oil composition,α-cyperone,β-pinene α-pinene,α-selinene,caryophyllene oxide
                Data availability:
                Keywords: cyperus rotundus, cyperaceae, essential oil composition, α-cyperone, β-pinene α-pinene, α-selinene, caryophyllene oxide

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