title: Dry column method for the quantitative extraction and simultaneous class separation of lipids from muscle tissue.
abstract: A method for lipid isolation is presented that is alternative to the traditional chloroform/methanol extraction methods. This new method allows lipid isolation by solvent elution of a dry column composed of a tissue sample, anhydrous sodium sulfate, and Celite 545 diatomaceous earth ground together. To isolate total lipids, the dry column is eluted with a mixture of dichloromethane/methanol (90:10, v/v). Alternatively, the lipids may be isolated and simultaneously separated into neutral and polar fractions by a sequential elution procedure; neutral lipids free of polar lipids are eluted first with dichloromethane, followed by elution of polar lipids with the dichloromethane/methanol (90:10) mixture. The two dry column methods-isocratic or sequential elution-were compared with the traditional chloroform/methanol methods by gravimetric, thin layer chromatographic and phosphorus analyses.
mesh_terms: D000818:Animals; D002417:Cattle; D002845:Chromatography / Q000379:methods; D007692:Diatomaceous Earth; D008055:Lipids / Q000302:isolation & purification*; D000432:Methanol; D008752:Methylene Chloride; D009132:Muscles / Q000032:analysis*; D012964:Sodium; D013431:Sulfates
chemical_list: D008055:Lipids; D013431:Sulfates; C012036:sodium sulfate; D008752:Methylene Chloride; D007692:Diatomaceous Earth; D012964:Sodium; D000432:Methanol