نتایج جستجو برای: essences essential oils

تعداد نتایج: 375677  

2017
Filomena Nazzaro Florinda Fratianni Raffaele Coppola Vincenzo De Feo

Since ancient times, folk medicine and agro-food science have benefitted from the use of plant derivatives, such as essential oils, to combat different diseases, as well as to preserve food. In Nature, essential oils play a fundamental role in protecting the plant from biotic and abiotic attacks to which it may be subjected. Many researchers have analyzed in detail the modes of action of essent...

2010
D. Ganjewala

The genus Cymbopogon (Poaceae) is most important from the point of view of their essential oils. Essential oils from these species are widely used in flavours, fragrances, cosmetics, soaps, detergents and perfumery owing to their typical lemon and rose-like aroma. Cymbopogon essential oils and constituents present therein e.g. citral, geraniol, citronellol, citronellal and piperitone, have been...

Journal: :حفاظت گیاهان 0
رفیعی کرهرودی رفیعی کرهرودی محرمی پور محرمی پور فرازمند فرازمند کریم زاده اصفهانی کریم زاده اصفهانی

abstract indian meal moth, plodia interpunctella hübner (pyralidae) is one of the most important stored-product insects that are controlled by fumigants. however, the use of plant essential oils and their constituents may have the advantage over conventional fumigants in terms of low mammalian toxicity and can be used as alternatives to conventional fumigants. therefore, in this research, repel...

Journal: :Molecules 2016
Katarzyna Szewczyk Danuta Kalemba Łukasz Komsta Renata Nowak

The present paper describes the chemical composition of the essential oils obtained by hydrodistillation from four Impatiens species, Impatiens glandulifera Royle, I. parviflora DC., I. balsamina L. and I. noli-tangere L. The GC and GC-MS methods resulted in identification of 226 volatile compounds comprising from 61.7%-88.2% of the total amount. The essential oils differed significantly in the...

Journal: :Molecules 2012
Orlando V Sousa Glauciemar Del-Vechio-Vieira Maria S Alves Aílson A L Araújo Míriam A O Pinto Maria P H Amaral Mírian P Rodarte Maria A C Kaplan

Essential oils of Duguetia lanceolata barks, obtained at 2 (T2) and 4 h (T4), were identified by gas chromatography and gas chromatography/mass spectrometry. β-elemene (12.7 and 14.9%), caryophyllene oxide (12.4 and 10.7%) and β-selinene (8.4 and 10.4%) were the most abundant components in T2 and T4, respectively. The essential oils inhibited the growth of Staphylococcus aureus, Streptococcus p...

Journal: :journal of food quality and hazards control 0
m. moradi a. hassani a. ehsani m. hashemi [email protected] m. raeisi s.s. naghibi

background: in current study, chemical composition and antibacterial activity of leaves and flowers essential oils of origanum vulgare ssp. gracile against four food-borne pathogens including  escherichia coli, listeria monocytogenes, salmonella thyphimurium and staphylococcus aureus were examined. methods: the different organs (leaves and flowers) of o. vulgare ssp. gracile were harvested at f...

Journal: :کنترل بیولوژیک آفات و بیماری های گیاهی 0
آیت طاهری دهکردی دانشجوی کارشناسی ارشد، بیوتکنولوژی محصولات باغبانی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج؛ معین خجسته دانشجوی کارشناسی ارشد بیماری شناسی گیاهی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج عزیزاله خندان میرکوهی استادیار گروه علوم باغبانی و فضای سبز، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج

constant use of chemical fungicides has faced to increasing public concern regarding contamination of perishables with fungicidal residues, and proliferation of resistance in the pathogen populations. so recent researches in this area has focused on the development and evaluation of alternative control strategies to reduce dependency on synthetic fungicides. accordingly, in this research in vit...

Journal: :حفاظت گیاهان 0
مهدی کبیری رئیس آباد محمود محمدی شریف ملیحه کبیری نسب

in this research, fumigation efficiency, repellency and persistence of citrus essential oils extracted from dried peels of orange, bitter orange and mandarin (cultivars: satsuma, page, clemantin) were investigated against adults of confused flour beetle tribolium confusum duval. the essential oils were extracted by using clevenger apparatus. 40 ml glass container as bioassay chamber and filter ...

2014
P. E. Pensel M. A. Maggiore L. B. Gende M. J. Eguaras M. G. Denegri M. C. Elissondo

The aim of the present work was to determine the in vitro effect of T. vulgaris and O. vulgare essential oils against E. granulosus protoscoleces and cysts. Essential oils were added to the medium resulting in thymol final concentrations of 10 μg/mL. The essential oils had a time-dependent effect provoking the complete loss of protoscolex viability after 72 days of postincubation. The results w...

2011
Shila Rezvanpanah Karamatollah Rezaei Mohammad-Taghi Golmakani Seyyed Hadi Razavi

Antibacterial properties and chemical characterization of the essential oils from summer savory (Satureja hortensis) extracted by microwave-assisted hydrodistillation (MAHD) were compared with those of the essential oils extracted using the traditional hydrodistillation (HD) method. While MAHD at 660 W required half as much time as HD needed, similar antibacterial efficacies were found from the...

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