[Structure characterization of melanin in black sesame by GC/MS].
Black sesame melanin, a kind of biopolymer was degraded by alkali fusion to study structure characterization. The degraded products were derivatized with bis-(trimethylsilyl) trifloroacetamide in a sealed tube at 125 degrees C for 30 min. The silylanization derivatives of degradation products were analyzed by GC/MS. Catechol, 1,4-dihydroxy benzene and catechuic acid were detected. This method can be used to characterize the structure type of black sesame melanin.
Yin
P Y
PY
Chemistry Department of Qingdao University, Qingdao 266071, China.
Lu
M S
MS
Kong
Q S
QS
Rong
R
R
Liu
G
G
D002392:Catechin / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D006873:Hydroquinones / Q000032:analysis; D008543:Melanins / Q000032:analysis / Q000737:chemistry*; D031685:Sesamum / Q000737:chemistry* / Q000145:classification
D006873:Hydroquinones; D008543:Melanins; D002392:Catechin; C031927:hydroquinone