| 000 | 02462nab a22003377a 4500 | ||
|---|---|---|---|
| 001 | 67887 | ||
| 003 | MX-TxCIM | ||
| 005 | 20250407163042.0 | ||
| 008 | 240909s1987 -uk|||p|op||| 00| 0 eng d | ||
| 022 | _a1060-3271 | ||
| 022 | _a1944-7922 (Online) | ||
| 024 | 8 | _ahttps://doi.org/10.1093/jaoac/70.1.160 | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 100 | 1 |
_aGehrke, C.W. _936580 |
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| 245 | 1 | 0 | _aAnalysis of amino acids by gas chromatography as the N-Trifluoroacetyl η-Butyl esters |
| 260 |
_aUnited Kingdom : _bOxford University Press, _c1987. |
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| 500 | _aPeer review | ||
| 520 | _aThis presentation describes amino acid analysis with the gas chromatographic method and experimental conditions using the N-trifluoroacetyl n-butyl ester derivatives; the study we describe here was undertaken to compare gas chromatographic (GC) and ion-exchange chromatographic (IEC) analyses of amino acids in hydrolysates of 9 diverse sample types to gain insight into effects of these 2 chromatographic methods of analysis on variation in amino acid results. Our study showed that values for samples prepared by 2 separate laboratories using the same procedure were generally in good agreement when all of the hydrolysates were analyzed by a single laboratory using a single method of analysis. To compare results from gas chromatography with those from ion-exchange chromatography analyses were performed by 2 different laboratories on the same hydrolysates and on different hydrolysates prepared by the same method by both laboratories. The data demonstrate that GC and IEC can be expected to yield essentially identical results when applied to the same hydrolysate. Agreement is so close that interlaboratory differences in hydrolysate preparation of the same sample contribute as much to variation in amino acid results as does the method of analysis, a fact which should be noted in planning collaborative studies. | ||
| 546 | _aText in English | ||
| 650 | 7 |
_aAnalysis _2AGROVOC _927824 |
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| 650 | 7 |
_aAmino acids _2AGROVOC _94464 |
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| 650 | 7 |
_aGas chromatography _2AGROVOC _911840 |
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| 650 | 7 |
_aNitrogen _2AGROVOC _92912 |
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| 650 | 7 |
_aIon exchange _2AGROVOC _928018 |
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| 700 | 1 |
_aKuo, K.C. _936733 |
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| 700 | 1 |
_aKaiser, F.E. _936734 |
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| 700 | 1 |
_aZumwalt, R.W. _936584 |
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| 773 | 0 |
_dUnited Kingdom : Oxford University Press, 1987. _gv. 70, no. 1, p. 160–170 _tJournal of Association of Official Analytical Chemists _wG446038 _x1060-3271 |
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| 942 |
_2ddc _cJA _n0 |
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| 999 |
_c67887 _d67879 |
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