Titrimetric Determinations of Some Amino Acids

✍ Scribed by A.M. El-Brashy; Sh.M. Al-Ghannam

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 102 KB
• Volume: 53
• Category: Article
• ISSN: 0026-265X
• DOI: 10.1006/mchj.1996.0059

✦ Synopsis

A titrimetric method is described for the determination of several amino acids, namely, histidine, methionine, cystine, cysteine, and tryptophan. The method involves the use of 1,3-dibromo-5,5dimethylhydantoin or N-bromophthalimide as titrant. The equivalent point is detected directly, indirectly, potentiometrically, or spectrophotometrically. The results obtained compare favorably with those obtained by the pharmacopoeial methods.