Methods and systems for on-column protein delipidation
First Claim
1. An on-column delipidation method comprising separating a lipid-containing sample on a chromatographic column having at least one silica-based stationary phase, at a temperature of at least about 70°
- C.;
wherein separation further comprises at least one mobile phase having an alcohol and at least one of the following eluents;
(a) about 0.1 weight % of an ion-pairing agent in water;
(b) about 0.08 weight %, of an ion-pairing agent in organic modifier;
or(c) about 20 weight % of an acid in an organic modifier, or combinations thereof.
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Abstract
Embodiments of the present invention provide a method of chromatographic delipidation comprising separating a lipid-containing sample on a superficially porous stationary phase at greater than about 70° C., at least about 80° C., having at least one mobile phase comprising an ion-pairing agent in water, an ion-pairing agent in an organic modifier, an acid in an organic modifier, and an alcohol. The invention provides minimal protein losses and high run-to-run reproducibility. The on-column delipidation method aventageously utilize reversed phase liquid chromatography.
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25 Claims
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1. An on-column delipidation method comprising separating a lipid-containing sample on a chromatographic column having at least one silica-based stationary phase, at a temperature of at least about 70°
- C.;
wherein separation further comprises at least one mobile phase having an alcohol and at least one of the following eluents;(a) about 0.1 weight % of an ion-pairing agent in water; (b) about 0.08 weight %, of an ion-pairing agent in organic modifier;
or(c) about 20 weight % of an acid in an organic modifier, or combinations thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- C.;
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21. An on-column delipidation method comprising separating a lipid-containing sample on a chromatographic column having at least one superficially porous stationary phase, at a temperature of at least about 70°
- C.;
wherein separation further comprises at least one mobile phase having at least one of;(a) about 0.1 weight % trifluoroacetic acid in water, (b) about 0.08 weight % trifluoroacetic acid in acetonitrile, (c) about 20 weight % formic acid in an organic acetonitrile, or (d) isopropanol, or combinations thereof. - View Dependent Claims (22, 23, 24, 25)
- C.;
Specification