| 000 | 02561nab a22003857a 4500 | ||
|---|---|---|---|
| 001 | 67763 | ||
| 003 | MX-TxCIM | ||
| 005 | 20241217170134.0 | ||
| 008 | 240725s1987 -uk|||p|op||| 00| 0 eng d | ||
| 022 | _a1060-3271 | ||
| 022 | _a1944-7922 (Online) | ||
| 024 | 8 | _ahttps://doi.org/10.1093/jaoac/70.1.171 | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 100 | 1 |
_aGehrke, C.W. _936580 |
|
| 245 | 1 | 0 | _aQuantitative analysis of cystine, methionine, lysine, and nine other amino acids by a single oxidation-4 hour hydrolysis method |
| 260 |
_aUnited Kingdom : _bOxford University Press, _c1987. |
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| 500 | _aPeer review | ||
| 520 | _aThe sulfur-containing amino acids cystine and methionine play important roles in animal, especially avian, nutrition. Because these sulfur-containing amino acids are destroyed to varying extents by 6N HC1 hydrolysis, oxidation and hydrolysis of cystine to cysteic add and methionine to methionine sulfone have been widely used for determination of cystine and methionine. Lysine is considered the next limiting amino acid after the sulfur amino acids in poultry nutrition; therefore, determination of the amino acid content of rations focuses first on these 3 amino acids. The objective of this investigation was to establish whether lysine and other amino acids could be accurately determined in proteinaceous materials which had undergone performic acid oxidation. To perform this evaluation, lysine was determined in a variety of protein-containing materials both with and without performic acid oxidation. Performic acid oxidation followed by 6N HC1 hydrolysis at 145°C for 4 h allows accurate measurement of 3 amino acids especially important to poultry nutrition, cystine, methionine, and lysine, in a single preoxidized hydrolysate; this method can be extended to another 9 protein amino adds. | ||
| 546 | _aText in English | ||
| 650 | 7 |
_aQuantitative analysis _2AGROVOC _95912 |
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| 650 | 7 |
_aAmino acids _2AGROVOC _94464 |
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| 650 | 7 |
_aCystine _2AGROVOC _934636 |
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| 650 | 7 |
_aMethionine _2AGROVOC _925829 |
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| 650 | 7 |
_aLysine _2AGROVOC _95257 |
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| 650 | 7 |
_aOxidation _2AGROVOC _911786 |
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| 650 | 7 |
_aHydrolysis _2AGROVOC _912240 |
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| 650 | 7 |
_aSulfur amino acids _2AGROVOC _934638 |
|
| 700 | 1 |
_aRexroad, P.R. _936581 |
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| 700 | 1 |
_aSchisla, R.M. _936582 |
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| 700 | 1 |
_aAbsheer, J.S. _936583 |
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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. 171–174 _tJournal of the Association of Official Analytical Chemists _wG444584 _x1060-3271 |
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| 942 |
_2ddc _cJA _n0 |
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| 999 |
_c67763 _d67755 |
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