1998
DOI: 10.1016/s0021-9673(98)00721-3
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Hydrolysis and amino acid composition analysis of proteins

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Cited by 506 publications
(364 citation statements)
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“…The concentration of each compound was determined by quantitative amino acid composition analysis using ortho-phtalaldehyde (OPA) as a derivatization agent following acid hydrolysis (28). Concentrations were calculated based on the total amount of cystine in each sample.…”
Section: Methodsmentioning
confidence: 99%
“…The concentration of each compound was determined by quantitative amino acid composition analysis using ortho-phtalaldehyde (OPA) as a derivatization agent following acid hydrolysis (28). Concentrations were calculated based on the total amount of cystine in each sample.…”
Section: Methodsmentioning
confidence: 99%
“…Different conditions of hydrolysis would make inter-laboratory comparisons of k Asp and (D/L) 0 difficult. The hydrolysis process for amino acid analysis induces racemization of amino acids, and the degree of racemization is affected by experimental conditions such as processing time, temperature, phase of acid, and additive agent [22]. Therefore, the degree of racemization must be determined by each laboratory in order to allow (D/L) act and the earplug ages in the 17 whales (Fig.…”
Section: Effect Of Hydrolysismentioning
confidence: 99%
“…A decrease in the degree of racemization through the hydrolysis process contributes to improve the accuracy and precision of AAR age. This study adopted gas-phase hydrolysis, because the degree of racemization in gas-phase hydrolysis was lower than that in the liquid-phase [22] which is the common method for whale age estimation using AAR.…”
Section: Standard Error Of Age Estimated By Aarmentioning
confidence: 99%
“…Um parâmetro limitante que permanece no desenvolvimento da análise de aminoácidos é a confiança na preparação dos hidrolisados protéicos para o método cromatográfico, principalmente quanto à eliminação dos reagentes da hidrólise [11,12,32]. A neutralização ou evaporação dos agentes hidrolíticos é importante fator de discussão.…”
Section: -Introduçãounclassified
“…Entretanto, muitos problemas ainda persistem, relacionados principalmente à hidrólise, ao preparo dos hidrolisados e à constituição da amostra. O método tradicional de hidrólise, com o uso de ácido clorídrico 6 N a 110°C, é reconhecido como padrão e o mais utilizado, apesar de promover a destruição parcial ou total dos aminoácidos, especialmente cistina, metionina e triptofano.Um parâmetro limitante que permanece no desenvolvimento da análise de aminoácidos é a confiança na preparação dos hidrolisados protéicos para o método cromatográfico, principalmente quanto à eliminação dos reagentes da hidrólise [11,12,32]. A neutralização ou evaporação dos agentes hidrolíticos é importante fator de discussão.…”
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