Extraction methods (see Section 3) are therefore used as a prepurification
step to selectively remove interfering components and/or to isolate the active compounds.
Other pre-purification methods are filtration, precipitation, removal of chlorophyll,
waxes and tannins, solid-phase extraction (SPE) using prepacked cartridges with a variety of packing material, both normal- and reversed-phase silica gel, or short columns with other suitable packing material such as alumina, Celite, Amberlite resins and Sephadex LH-20.
Extraction methods (see Section 3) are therefore used as a prepurificationstep to selectively remove interfering components and/or to isolate the active compounds. Other pre-purification methods are filtration, precipitation, removal of chlorophyll,waxes and tannins, solid-phase extraction (SPE) using prepacked cartridges with a variety of packing material, both normal- and reversed-phase silica gel, or short columns with other suitable packing material such as alumina, Celite, Amberlite resins and Sephadex LH-20.
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