نتایج جستجو برای: pressurized fluid extraction

تعداد نتایج: 386894  

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
(pages 39-46) seyed h. ghaziaskar a. sheibani

a pressurized fluid extraction (pfe) method for the extraction of pistachio oil was developed using a modified supercritical fluid extractor. the supercritical fluid extraction apparatus was modified to be able to pump liquid solvent and co2 into the extraction vessel alternatively. the experimental results showed that the extraction yield was independent of the extraction pressure. it was also...

Journal: :Journal of Research of the National Institute of Standards and Technology 2017

2007
Dragana Mutavdžić Pavlović Sandra Babić Alka J.M. Horvat Marija Kaštelan-Macan

Abbreviations: AIBN, 2,20-azo-bis-isobutyronitrile; ASE, Accelerated solvent extraction; CAR, Carboxen; DAD, Diode-array detector; DI-SPME, Direct-immersion solid-phase extraction; DSPE, Dispersive solid-phase extraction; EGDMA, Ethylene glycol dimethacrylate; ESE, Enhanced solvent extraction; ESI, Electrospray ionization; FD, Fluorescence detection; FLD, Fluorimetric detection; GC, Gas chromat...

2014
Hossein Kamali Noushin Aminimoghadamfarouj Alireza Nematollahi

Essential oil components were extracted from Lavandula angustifolia (Lavender) flowers using pressurized fluid extraction (PFE). A Box-Behnken design was used to optimize the effective extraction variables. The chemical composition of extracted samples was analyzed by gas chromatograph-flame ionization detector column. For achieving maximum % extraction yield the temperature, pressure, and dyna...

Journal: :Molecules 2015
María José Otero-Pareja Lourdes Casas María Teresa Fernández-Ponce Casimiro Mantell Enrique J Martínez de la Ossa

The extraction yield, phenolic content, anthocyanin content and antioxidant activity of extracts from different varieties of red grapes, Cabernet Sauvignon, Merlot, Petit Verdot, Syrah, Tempranillo and Tintilla, using pressurized green solvents have been analyzed. Two techniques were studied and compared: supercritical fluid extraction (SFE) with CO2 + 20% ethanol and pressurized liquid extract...

Journal: :Journal of chromatography. A 2007
José A Mendiola Miguel Herrero Alejandro Cifuentes Elena Ibañez

This review attempts to provide an updated overview (including works published till June 2006) on the latest applications of compressed fluids as sample preparation techniques for food analysis. After a general review of the principles of supercritical fluid extraction (SFE) and pressurized liquid extraction (PLE; also called accelerated solvent extraction, ASE or subcritical water extraction, ...

2012
Jung-Hoon Kim Chang-Seob Seo Seong-Sil Kim Hyeun-Kyoo Shin

This study compared Ojeok-san (Wuji-san in Chinese) decoctions produced using different extraction methods for variable times. Decoctions were extracted in pressurized or non-pressurized conditions for 60, 120, and 180 mins. We investigated the Ojeok-san extract yield, the total soluble solid content, the hydrogen ion concentration (pH), and the reference compound content. The extract yield and...

Journal: :Molecules 2010
Patricia Garcia-Salas Aranzazu Morales-Soto Antonio Segura-Carretero Alberto Fernández-Gutiérrez

This paper reviews the phenolic-compound-extraction systems used to analyse fruit and vegetable samples over the last 10 years. Phenolic compounds are naturally occurring antioxidants, usually found in fruits and vegetables. Sample preparation for analytical studies is necessary to determine the polyphenolic composition in these matrices. The most widely used extraction system is liquid-liquid ...

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