نتایج جستجو برای: gc and gc ms

تعداد نتایج: 16844927  

Journal: :International journal of biological, physical and chemical studies 2022

Bouea macrophylla Griff is a member of the Anacardiaceae family, which has edible fruits. Due to high nutritional value, appealing taste, and attractive color, fruit juice B. potential be developed as functional beverage. The present study was conducted determine phytochemical profile using GC-MS LC-MS/MS. analysis performed with Agilent Technologies 7890 Gas Chromatograph automated sampling ta...

Journal: :Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 1996

Journal: :Molecules 2013
Michał Brokl Marie-Laure Fauconnier Céline Benini Georges Lognay Patrick du Jardin Jean-François Focant

A single fraction of essential oil can often contain hundreds of compounds. Despite of the technical improvements and the enhanced selectivity currently offered by the state-of-the-art gas chromatography (GC) and mass spectrometry (MS) instruments, the complexity of essential oils is frequently underestimated. Comprehensive two-dimensional GC coupled to time-of-flight MS (GC×GC-TOFMS) was used ...

Journal: :Mass spectrometry reviews 2006
Lutz Alder Kerstin Greulich Günther Kempe Bärbel Vieth

This overview evaluates the capabilities of mass spectrometry (MS) in combination with gas chromatography (GC) and liquid chromatography (LC) for the determination of a multitude of pesticides. The selection of pesticides for this assessment is based on the status of production, the existence of regulations on maximum residue levels in food, and the frequency of residue detection. GC-MS with el...

Journal: :mycologia iranica 0
m. shahiri tabarestani department of plant protection, faculty of plant production, gorgan university of agricultural sciences & natural resources, gorgan, iran & faculty of agricultural sciences, payame noor university, tehran, iran k. rahnama department of plant protection, faculty of plant production, gorgan university of agricultural sciences & natural resources, gorgan, iran m. jahanshahi nanotechnology research institute, school of chemical engineering, babol noshirvani university of technology, mazandaran, iran s. nasrollahnejad department of plant protection, faculty of plant production, gorgan university of agricultural sciences & natural resources, gorgan, iran m. h. fatemi faculty of chemistry, mazandaran university, babolsar, iran

fungi release wide spectrum of volatile organic compounds (vocs) that belong to several chemical groups with different biochemical origins such as monoterpenes, sesquiterpenes, alcohols, aldehydes, aromatic compounds, esters, furans, ketones, sulfur and nitrogen compounds. trichoderma species are the most studied fungal biocontrol agents and are successfully used as biofungicides and biofertili...

Journal: :journal of herbal drugs 0
razieh abdollahi arjenki islamic azad uinversity, shahrekord

background and aim: tanacetum parthenium l. is herbaceous perennial medicinal plant belonging to the asteraceae family. feverfew is used as an analgesic, housing, fever-lowering, anti-rheumatism and migraines in traditional medicine. the most important active ingredient of the herb is essential oil. variation on genetic and environmental conditions play a major role in the growth, development, ...

ژورنال: :فصلنامه علمی پژوهشی گیاهان دارویی 0
حسین لاری یزدی h lari yazdi department of biology, eslamic azad university, borujerd, iran tel: (0662) 3505867fax:بروجرد، دانشگاه آزاد اسلامی گروه زیست شناسی، تلفن: 3505867 (0662) مسعود گودرزی m goudarzi 1- department of biology, eslamic azad university, borujerd, iran2- مربی زیست شناسی، دانشگاه آزاد اسلامی، واحد بروجرد داراب یزدانی d yazdani 2- institute of medicinal plants, iranian academic center for education, culture & research, tehran, iran3- استادیار پژوهش کشاورزی، پژوهشکده گیاهان دارویی جهاددانشگاهی، تهران عبدالکریم حقیر چهرگانی ak chehregai 3- department of biology, bu-ali sina university, hamadan, iran4- استادیار، گروه زیست شناسی، دانشگاه بوعلی همدان

مقدمه: جنس salvia متعلق به خانواده نعناعیان (lamiaceae) و شامل 700 تا 900 گونه در سرتاسر جهان می باشد. در ایران 57 گونه از این جنس شناسایی شده که تعدادی از آنها بومی می باشند. گیاهان متعلق به این جنس دارای خواص دارویی بوده و در طب سنتی مورد استفاده قرار می گیرند. هدف: در این مطالعه مواد تشکیل دهنده موجود در اسانس حاصل از دو اندام برگ و گل های دو گونه salvia جمع آوری شده از منطقه بروجرد مورد برر...

Journal: :فصلنامه علمی پژوهشی گیاهان دارویی 0
l alavi department of chemistry, k. n. toosi university of technology m barzegar department of food science and technology, tarbiat modares university, p. o. box 14115-336, tehran, iran tel: + 98 - 21 - 48292323, fax: + 98 – 21 - 48292200 a jabbari department of chemistry, k. n. toosi university of technology h naghdi badi department of cultivation and development, institute of medicinal plants, acecr

background: thymus daenensis celak. is one of the medicinal plants which cultivated in iran. this plant involve high amount of polyphenols including thymol and carvacrol, which were reported to possess the high antioxidant activity. objective: antioxidative activity (aoa) and chemical constituents of thymus daenensis essential oil (tdeo) were examined. also, the effect of thermal treatments (80...

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