Abstract
Struchium sparganophora Linn. Ktze Asteraceae is a culinary herb that is consumed in the Western part of Nigeria and has wide medicinal uses in traditional medicine. The present study was carried out to determine the chemical composition of the oils from its leaf and stem and their antibacterial activity. Essential oils were collected from the leaf and stem of Struchium sparganophora by hydrodistillation and analysed by GC and GC-MS. The antimicrobial activity was tested against Gram negative (G-ve) and Gram positive (G + ve) microorganisms obtained from the Medical Microbiology Unit, University College Hospital (UCH), Ibadan, Nigeria. Forty-six compounds were identified in the leaf representing 95.3% of the total oil while fifty-five compounds were identified in the stem representing 93.5% of the oil. β-caryophyllene, Germacrene A, a-humulene and Germacrene D represented the major components in both oils. Antibacterial activity of the oils against certain strains of bacteria showed that the different concentrations of the oils (100 – 10,000 ppm) from the leaf had activity ranging from 9.0 ± 1.0 to 14.3 ± 2.55 mm while that from the stem had activity ranging from 18.5 ± 2.2 to 20.0 ± 0.0 mm for both G-ve.and G + ve microorganisms respectively.
Highlights
Plants have been an indispensable part of human lives either as source of food, shelter, ecological conservation and most importantly avenue for the discovery and synthesis of drugs
Struchium sparganophora is a culinary herb in most African countries
Natural products from plant origin have been a source of many novel drugs in conventional use in Health care today e.g. Artemisinin isolated from the plant Artemisia annua, sweet wormwood, a herb employed in Chinese traditional medicine and taxol from Taxus brevifola [3]
Summary
Plants have been an indispensable part of human lives either as source of food, shelter, ecological conservation and most importantly avenue for the discovery and synthesis of drugs. (2014) Chemical Composition and Antibacterial Activity of Essential Oils from Struchium sparganophora Linn. Essential oils from plants have been in the forefront of tremendous breakthrough in the classification and production of products with therapeutic properties. Struchium sparganophora is a culinary herb in most African countries. There is a severe lack of relevant scientific research carried out on this herb, despite its wide spread consumption in African countries and its ethnobotanical use. Natural products from plant origin have been a source of many novel drugs in conventional use in Health care today e.g. Artemisinin isolated from the plant Artemisia annua, sweet wormwood, a herb employed in Chinese traditional medicine and taxol from Taxus brevifola [3]. The use of traditional medicines has increased as consumers seek complementary and or alternatives to prescribed drugs
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