power of herbs and essential oils in healing
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8/13/2019 Power of Herbs and Essential Oils in Healing
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Antibacterial Activity of Essential Oils from Palmarosa, Evening Primrose, Lavender and
Tuberose
M. H. Lodhia,K. . !hatt, and ". #. Tha$er%
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Abstract
Essential oils e+tracted from floer (etals of (almarosa -Cymbopogon martini, evening
(rimrose -Primula rosea, lavender -Lavandula angustifolia and tuberose -Polianthustuberosa ere tested for their antibacterial activities against gram/(ositive and gram/
negative bacteria. 0ifferent concentrations of each essential oil ranging from 12/1223
ere tested. !oth gram/(ositive and gram/negative bacteria ere found susce(tible to thestudied floer essential oils. 4ith increase in concentration of essential oil, increase in
5one of inhibition as observed thus dose/de(endent res(onse as clear for each
essential oil. Essential oil e+tracted from Cymbopogon martinishoed the highestactivity against both gram (ositive and gram negative bacteria among the tested essential
oils.
Keyords* Antibacterial activity, gram/(ositive bacteria, gram/negative bacteria,essential oil, evening (rimrose, lavender, (almarosa, tuberose
"olatile com(ounds from (lants, es(ecially essential oils have antimicrobial, fungicidal
and insecticidal activities61,78. The essential oils are strong antimicrobial agents ith
broad s(ectrum activity ith (ossible (otential for the control of (athogens in (lants as of(ost/harvest s(oilage of many cro(s and also to human (athogenic diseases698. They may
(rove to be more economical and environmentally safe, as an antimicrobial agent.
The volatile essential oils released from leaves, floers and fruits into the atmos(here
and from roots into the soil defend herbivores and (athogens6:8. Essential oil from floer
(etals of Palmarosa is used for gargles in throat infection, and s$in care678. Evening(rimrose is ell $non for s$in care and beauty treatments in Ayurvedic medicines6;8.
Tuberose is an ornamental (lant, hich is idely used in aeromathera(y because of its
flavour and fragrance68.
Plant essential oils constitute about 13 of (lant secondary metabolites and are mainly
re(resented by ter(enoids, (henyl(ro(anoids or ben5enoids, fatty acid derivatives andamino acid derivatives6:8. Earlier or$ers have isolated some (otent constituents li$e
geraniols -ter(ene alcohol from (almarosa6?8, triter(enoidsa(onin -(rimulanin in
evening (rimrose6>8, lavandin6;8, linalyl actate, geraniol -ter(ene alcohol and
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citronellal6@8 from lavender. Tuberose leaves (ossess $aem(ferol and tuberolide6128. 0ue
to lo molecular eight ith li(o(hilic tendencies, essential oils have the ca(acity to
(enetrate into the tissue easily and much faster. Only scattered attem(ts have been madeto demonstrate the ability of essential oils in antimicrobial and antiherbivore
activity611,178.
Out of to selected organisms, Staphylococcus aureuscauses a variety of su((urativeinfections in humans. =t causes su(erficial s$in lesions more serious infections such as
(neumonia, meningitis, and urinary tract infections food (oisoning by releasing
enteroto+ins into food and to+ic shoc$ syndrome by release of su(erantigens into theblood stream.Escherichia coliis normally (resent in human intestine but eventually
cause food (oisoning. The (rominent difference beteenE. coliand S. aureusis their
gram staining (ro(erty.E. coliis gram (ositive hile S. aureusis gram negative bacteria.The (resent or$ as carried out to find out the common and (otent agent that can
inhibit the groth of both ty(es of bacteria.
#team distilled essential oils from floers of (almarosa, evening (rimrose, tuberose andlavender ere obtained from "=#A'O -"imal esearch #ociety for Agrobiotech and
'osmic Poer, aB$ot, )uBarat, =ndia. =n the (resent study, test organismsE. coli-722
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e+(erimentations can hel( to e+(lore the (otential role of essential oils as antibacterial
agents but reGuires further study.