Most substituted benzaldehydes (with the exception of o-and p-nitrobenzaldehydes1, 2)
show a limited reactivity to attacks by weak nucleophiles, like water. 3, 4 Introduction of a …

An overview is presented of HPLC methods currently in use to determine amino acids as
their o-phthaldialdyde derivatives in the presence of various SH-group-containing additives …

Amino acids, either in a free or polymeric state, represent a significant addition of N to most
ecosystems and therefore comprise a key pool in the soil nitrogen cycle. The ability of some …

This paper reports a new, simple, rapid and economical method for routine determination of
24 amino acids and biogenic amines in grapes and wine. No sample clean-up is required …

Background Chronic obstructive pulmonary disease (COPD) is related to endothelial
dysfunction and the impaired generation of nitric oxide (NO) from L-arginine by the …

A high-performance liquid chromatographic method (HPLC) with combined diode array and
fluorescence detection of amino acids and amines in various cheese samples is described …

A new high-performance liquid chromatography method is described for the simultaneous
quantitation of amino acids and amines for 37 compounds (20 amino acids+ 17 amines), as …

An overview is presented on the advancement of the two most frequently used derivatization
protocols applying the o-phthalaldehyde (OPA)-thiol and the fluorenylmethyloxycarbonyl …

Unusual amino acids such as β-methoxytyrosine (β-MeOTyr), allo-threonine (allo-Thr) and
allo-isoleucine (allo-Ile) were derivatized with N-α-(2, 4-dinitro-5-fluorophenyl)-l …

The composition of the amino acid and amine derivatives obtained with the o-
phthaldialdehyde (OPA)/3-mercaptopropionic acid (MPA) and with the OPA/N-acetyl-l …