Summary
This paper reports on the use of uni-dimensional high performance thin layer chromatography on silica gel for the separation and detection of ether phospholipids involving in situ reflectance densitometry. Dipping reagents for charring (cupric sulfate-phosphoric acid and manganese chloride-sulfuric acid) or fluorescence enhancement (1-anilino-8-naphthalene sulfonate) were evaluated. Two lipophilic fluorescence reagents (2,5-bis-5′-tert-butylbenzoxazolyl-(2′))thiophene and 4-(N,N-dihexadecyl)amino-7-nitrobenz-2-oxa-1,3-diazole) which move in the mobile phase were tested. The latter reagent gave the more sensitive and stable measurements: nanogram amounts of ether phospholipids could be detected in a reproducible way. Since alkyl lysophospholipids are highly polar molecules, high performance thin layer chromatography is a challenge. Characteristics of sorbents and influence of mobile phases on detection and separation are discussed for the NBD-dihexadecylamine fluorescence detection method.
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Abbreviations
- Thio-ALP:
-
DL-alfa-Phosphatidyl-choline-beita-O-methoxy-methyl-gamma-S-hexadecyl
- Et-18-0Me:
-
DL-alfa-Phosphatidyl-choline-beita-O-methyl-gamma-O-octadecyl
- Et-16-0Me:
-
DL-alfa-Phosphatidyl-choline-beita-O-methyl-gamma-O-hexadecyl
- PAF:
-
DL-alfa-phosphatidyl-choline-beita-acetyl-gamma-O-hexadecyl
- PALM:
-
DL-alfa-phosphatidyl-choline-beita-palmitoyl-gamma-O-hexadecyl
- ALP:
-
Alkyl lysophospholipid
- 8-ANSA:
-
1-anilino-8-naphthalene sulfonate
- BBOT:
-
(2,5-bis-(5ø-tert-butylben-zoxazolyl-(2′))thiophene
- NBD-dihexadecylamine:
-
4-(N,N-dihexadecyl)amino-7-nitrobenz-2-oxa-1,3-diazole
- TEA:
-
triethylamine
- HPTLC:
-
High Performance Thin Layer Chromatography
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Coene, I., Ramos, M.E., Van den Eeckhout, E. et al. Evaluation of densitometric quantitation of ether phospholipids by high performance thin layer chromatography. Chromatographia 30, 414–420 (1990). https://doi.org/10.1007/BF02328508
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DOI: https://doi.org/10.1007/BF02328508