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A Novel Yellow Pigment, Furpipate, Derived from Lysine and Furfural
Author(s) -
Murata Masatsune,
Totsuka Hana,
Ono Hiroshi
Publication year - 2008
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1196/annals.1433.050
Subject(s) - furfural , maillard reaction , chemistry , lysine , pentose , browning , pyridine , organic chemistry , ascorbic acid , nuclear chemistry , biochemistry , amino acid , food science , fermentation , catalysis
Furfural is an important intermediate compound of the Maillard reaction of pentose or ascorbic acid. We examined the browning of furfural and lysine by heating these compounds in solution and found two yellow compounds. The first, furpipate, is a novel pipecolic acid derivative and was ( Z )‐3‐(2‐furylmethylidene)‐3 H , 4 H , 5 H , 6 H ‐pyridine‐2‐carboxylic acid. The second was decarboxylated‐furpipate. Furpipate shows absorption maxima at 370 nm and 310 nm under acidic and alkaline conditions, respectively. This compound was the major colored compound of the heated solution containing lysine and furfural.