PRINCIPLES OF EXTRACTION AND THE EXTRACTION OF SEMIVOLATILE
tive extraction (SBSE), is also discussed To understand any extraction technique it is first necessary to discuss some underlying principles that govern all extraction procedures The chemi-cal properties of the analyte are important to an extraction, as are the properties of the liquid medium in which it is dissolved and the gaseous,
Supercritical carbon dioxide extraction of tagitinin C from
2 4 3 Soxhlet extraction with dichloromethane A sample of 200mg of plant material was extracted in the dark with 150mL of dichloromethane for 2h in a Soxhlet apparatus A small Soxhlet ( Soxhlet) apparatus was also used to extract in the dark 200mg of plant material with 5mL of dichloromethane for 40min
n-Alkanes in tomato (Solanum lycopersicum L) seed oil: the
Three cultivars of tomato (Solanum lycopersicum L cv ‘Principe Borghese’, ‘Rebelion F1’ and ‘San Marzano’) were separately grown in three greenhouses in Southern Italy to investigate the n-alkane (saturated linear hydrocarbons) composition of the tomato seed oil (TSO) The oil was obtained by Soxhlet-petroleum ether extraction One-
Guide to Solid Phase Extraction - Sigma-Aldrich
Solid phase extraction (SPE) is an increasingly useful sample preparation technique With SPE, many of the problems associated with liquid/liquid extraction can be prevented, such as incomplete phase separations, less-than-quantitative recoveries, use of expe nsive, breakable specialty glassware, and disposal of large quantities of organic
Physicochemical composition of tomato seed oil for an edible
found in Rebelion F1 to 23 44 found in Principe Borghese Other Authors carried out the TSO extraction with different systems and found: 35 3 , 36 4 , 36 9 after supercritical acetone extraction at 513, 515 and 518°K respectively (Demirbas, 2010); 30 3 after Soxhlet extraction with chloroform/ methanol 2:1 (Kulkarni et al , 2012); 23 1 after
Université Sidi Mohammed Ben Abdellah Faculté des Sciences et
Figure 31 : Rendements de l’extraction de la D gnidium par les deux méthodes P 39 d’extraction Figure 32 : Rendements de l’extraction par Sonication pour les trois plantes P 40 Figure 33 : Courbe d’étalonnage d’AG P 41 Figure 34 : Courbe d’étalonnage du Quercitine P 41
Extraction of Lipids in Solution by the Method of Bligh
Extraction of Lipids in Solution by the Method of Bligh & Dyer (B l ig h,E G a ndDy e rW J 1 95 A pm t ofx cu Can J Biochem Physiol 37:911-917 ) Use new (or solvent-cleaned) all-glass tubes: 1 For each 1 ml of sample, add 3 75 ml 1:2 (v/v) CHCl 3:MeOH and vortex well If you will be
NORME INTERNATIONALE
The purpose of IECthe 62321 series is therefore to provide test methods that will allow the electrotechnical industry to determine the levels of certain substances of
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