β-胡萝卜素氧化降解产物的GC-MS研究及形成机理探讨  

GC-MS Identification for Reaction Products and Their Formation Mechanism of Oxidative Degradation of β-Carotene

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》2008年第6期20-24,共5页Chemistry and Industry of Forest Products

摘　　要：β-胡萝卜素的降解反应能产生各种各样的降解产物,其组成十分复杂。这些组成成分通过GC以及GC-MS分析方法基本上可以得到鉴定。研究结果表明,β-胡萝卜素的氧化降解主要生成较小分子的酮类、醛类、醇类和少量的酸类、酯类等含氧化合物,同时还生成烯烃类物质,这些物质中含量最高的是β-紫罗兰酮和二氢猕猴桃内酯。这些含氧类物质主要是β-胡萝卜素被氧化形成氢过氧化物,然后再断裂分解而形成的,而烃类成分则是β-胡萝卜素的直接裂解产物。There are various kinds of degradation products as complex components from oxidative degradation ofβ-carotene, which have been identified mainly by gas-liquid 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, and small amounts of carboxylic acids and their esters, as well as hydrocarbons, among which the most important compounds with the largest contents are β-ionone and dihydroactinidiolide. As the mechanism proposal, oxygen-containing compounds may be formed from degradation of hydroperoxides owing to oxidation of β-carotene, and hydrocarbons may be formed directly from degradation of β-carotene.

关 键 词：β-胡萝卜 素 氧化降解产物 GC-MS分析 形成机理 

分 类 号：TQ351.0[化学工程]