叶黄素的热解产物分析

Analysis of Pyrolytic Products of Lutein

为研究叶黄素对卷烟燃吸品质的影响,分别在300、600、900℃和氮气、10%氧气+90%氮气、大气环境中进行了叶黄素热解试验,热解产物经固相微萃取后进行GC/MS分析,并用叶黄素进行了卷烟加香试验。结果表明:①在所试验的温度和氛围中,叶黄素的裂解产物主要是甲苯、对-二甲苯、1,2-二氢-1,1,6-三甲基-萘和2,7-二甲基萘等,另外还有少量的氧化异佛尔酮、巨豆三烯酮、醛和烯烃类物质等;②叶黄素裂解产物的种类和相对含量都随着裂解温度的变化而变化,而裂解氛围则影响不大;③添加叶黄素的卷烟烟气香气略增加,但其杂气、刺激性都明显增大,余味变差。因此,添加叶黄素不利于卷烟抽吸品质的提高。

To investigate the effect of lutein on the smoking quality of cigarettes, the lutein was pyrolysed in various surroundings （N2, 10% O2 ＋ 90% N2, and air） at 300 ℃, 600 ℃ and 900 ℃, respectively. The pyrolytic products adsorbed by solid phase microextraction were analyzed with gas chromatography/mass spectrometry, and lutein was applied to cigarettes as a flavor. The results showed that： 1） in all pyrolytic environments and temperatures, the major components of pyrolytic products were tolune, p-xylene, 1, 2 - dihydro - 1, 1, 6 - trimethylnaphthalene, 2, 7 - dimethylnaphthalene, etc., and the minor components were isophorone, megastigmatrienone, aldehydes, alkenes, etc. ; 2） the kind and relative content of pyrolytic products changed with the change of temperatures, while the influence of environment was negligible; 3） lutein adding would enhance the aroma of cigarette smoke, but increase the offensive odor and irritantcy, and deteriorate the aftertaste. Therefore, the addition of lutein was not beneficial to improve the smoking quality of cigarette.