叶黄素催化氧化降解产物的GC-MS分析鉴定  

GC-MS Identification of Degradative Products from Catalytical Oxidation of Lutein

作　　者：刘维涓[1,2] 

机构地区：[1]昆明理工大学化学与化工学院,云南昆明650093 [2]云南瑞升烟草技术(集团)有限公司,云南昆明650663

出　　处：《林产化学与工业》2009年第2期85-89,共5页Chemistry and Industry of Forest Products

摘　　要：叶黄素在催化氧化降解反应中能产生各种各样复杂的氧化降解产物,其组成成分基本上能通过GC以及GC-MS分析得以鉴定。结果表明,叶黄素在进行同步催化氧化降解反应过程中,还伴随有自身羟基的氧化和脱水作用,生成物中以酮类、醛类、醇类等含氧化合物为主,还有烯烃和芳烃类物质,其中最重要的化合物是异佛尔酮、β-紫罗兰醇、二氢猕猴桃内酯、α-环柠檬醛、β-环柠檬醛、α-紫罗兰烯等。叶黄素在催化剂作用下被氧化形成氢过氧化物,然后再断裂分解而形成含氧类化合物,而直接裂解、环化与脱氢作用后则形成烃类及芳烃类成分。Various kinds of degradation products can be formed from catalytical oxidation of lutein, which were identified by gas chromatography and GC-MS analysis. As results, the generated compounds are mainly identified as low-boiling-point oxygen-containing compounds such as ketones, aldehydes, alcohols, as well as alkenes and aromatic hydrocarbons. Among them the most important compounds are isophorone,β-ionol, dihydroactinidiolide, α-cyclocitral ,β-cyclocitral, α-ionene, etc. From the pathway proposal, oxygencontaining compounds may be formed from degradation of hydroperoxides owing to the catalytic oxidation of lutein, accompanied with oxidation and dehydration of hydroxyl group. Alkenes and aromatic hydrocarbons may be formed directly from degradation, eyclization and dehydrogenation of lutein.

关 键 词：叶黄素 氧化降解产物 GC—MS分析 形成机理 

分 类 号：TQ351.0[化学工程]