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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Статья в журнале

Chemical Compositions of the Essential Oils from the Aerial Parts of Achillea wilhelmsii Using Traditional Hydrodistillation, Microwave Assisted Hydro- distillation and Solvent-Free Microwave Extraction Methods: Comparison with the Volatile Compounds Obtained by Headspace Solid-Phase Microextraction  [2016]

Nekoei, Mehdi; Mohammadhosseini, Majid;

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Chemical profiles of the essential oils and volatile compounds from the aerial parts of Achillea wilhelmsii C. Koch (Compositae) obtained through hydrodistillation (HD), solvent-free microwave extraction (SFME), microwave assisted hydrodistillation (MAHD) and headspace solid-phase microextraction (HS-SPME) methods were subsequently investigated by means of GC and GC-MS instruments. A total of 22, 18, 22 and 22 components were identified in the chemical profiles, representing 93.6 %, 93.0 %, 92.4 % and 94.9 % of the total compositions when using the HD, HS-SPME, SFME and MAHD methods, respectively. In all samples, more than forty percent of the total structure consisted of oxygenated monoterpenes. In addition, the second rank of natural compounds are due to monoterpene hydrocarbons by SFME, MAHD and HS-SPME approaches while in the oil obtained by HD, oxygenated sesquiterpenes are the next most common ones. Moreover, 1,8-cineole was the main constituent of the hydrodistilled oil whereas camphor was the most frequently occurred compound using SFME, MAHD and HS-SPME methods.
Журнал
Journal of essential oil-bearing plants
ISSN : 0976-5026

Библиографическая информация

Язык:
English
Тип:
Journal Article
В АГРИСе с:
2016
Том:
19
Выпуск:
1
Стартовая страница:
59
Конечная страница:
75
Издатель:
Taylor & Francis
Все названия:
"Chemical Compositions of the Essential Oils from the Aerial Parts of Achillea wilhelmsii Using Traditional Hydrodistillation, Microwave Assisted Hydro- distillation and Solvent-Free Microwave Extraction Methods: Comparison with the Volatile Compounds Obtained by Headspace Solid-Phase Microextraction"@eng
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Библиографическая информация

Язык:
English
Тип:
Journal Article
В АГРИСе с:
2016
Том:
19
Выпуск:
1
Стартовая страница:
59
Конечная страница:
75
Издатель:
Taylor & Francis
Все названия:
"Chemical Compositions of the Essential Oils from the Aerial Parts of Achillea wilhelmsii Using Traditional Hydrodistillation, Microwave Assisted Hydro- distillation and Solvent-Free Microwave Extraction Methods: Comparison with the Volatile Compounds Obtained by Headspace Solid-Phase Microextraction"@eng