Chirality of 2-(4-Methoxyphenoxy) propanoic acid in roasted coffee beans: analysis of the methyl esters by chiral high-performance liquid chromatography
Methyl 2-(4-methoxyphenoxy) propanoate, previously shown to be present in methylated aqueous extracts of roasted Colombian Arabica coffee beans, was purified by reversed-phase high-performance liquid chromatography (HPLC) with a Chromspher C18 column (250 x 4.6 mm). The purified extract was analyzed by chiral HPLC with a Chiralcel OK column (250 x 4.6 mm), which provided excellent separation of the two enantiomers of the ester. The methyl 2-(4-methoxyphenoxy) propanoate in the methylated coffee extract was shown to be composed of predominantly (80 percent) the (S)-(-) enantiomer
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| Main Authors: | , , , |
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| Format: | biblioteca |
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| Subjects: | CAFE TOSTADO, COMPOSICION, ACIDO PROPIONICO, COMPUESTOS ORGANICOS, ANALISIS QUIMICO, CROMATOGRAFIA LIQUIDA ALTA PRESION, ESTERES, |
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| Summary: | Methyl 2-(4-methoxyphenoxy) propanoate, previously shown to be present in methylated aqueous extracts of roasted Colombian Arabica coffee beans, was purified by reversed-phase high-performance liquid chromatography (HPLC) with a Chromspher C18 column (250 x 4.6 mm). The purified extract was analyzed by chiral HPLC with a Chiralcel OK column (250 x 4.6 mm), which provided excellent separation of the two enantiomers of the ester. The methyl 2-(4-methoxyphenoxy) propanoate in the methylated coffee extract was shown to be composed of predominantly (80 percent) the (S)-(-) enantiomer |
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