气相离子迁移谱分析市售燕盏挥发性物质成分

Analysis of Volatile Substances in Bird’s Nest by GC-IMS Technique

目的:利用气相离子迁移色谱技术(GC-IMS)对市售燕盏挥发性物质成分分析。方法:利用GC-IMS技术对8个燕盏样品以及燕盏常用掺假物猪皮进行检测,对比其挥发性物质成分差别。结果:共检测到燕盏中醇类、醛类、酮类、酯类和其他类物质,共5大类29种挥发性化合物。与正品燕盏相比,7个燕盏样品与其相似度平均达到89%,但猪皮只有52%。SPSS分析表明燕盏中苯甲醛(10.54%)含量较高,1-壬醇(0.07%)、二甲基三硫(0.36%)、戊醛(0.06%)、2-丁酮(0.05%)、2-己酮(0.05%)含量均较低,其中燕盏中苯甲醛含量为猪皮70倍,而猪皮中2-丁酮含量为燕盏4.6倍。结论:GC-IMS技术通过分析挥发性物质组成可较好的将猪皮和燕盏区分开,本文可为燕窝品质评价和真伪鉴定提供一种新思路和参考数据。

Objective:Analyze the volatile substance of commercial bird’s nest by GC-IMS. Methods:An advanced technique GC-IMS was used to detect the volatile components of 8 bird’s nest samples and it’s adulterant pig skin. Results:A total of 29 volatile compounds of 5 classes including alcohols,aldehydes,ketones,esters and other substances were detected in bird’s nest. Compared with the genuine ones,the average similarity was 89% between the 7 samples and the genuine ones,but only 52% of the pig skin. SPSS analysis showed that the contents of benzaldehyde in bird’s nest was higher(10.54%),and the contents of 1-nonyl alcohol(0.07%),dimethyl trisulfide(0.36%),valeraldehyde(0.06%),2-butanone(0.05%)and 2-hexanone(0.05%)was low. The contents of benzaldehyde in bird’s nest was 70 times that of pig’s skin,but the content of 2-butanone in pig’s skin was 4.6 times that of bird’s nest. Conclusion:GC-IMS technique could distinguish pig skin from bird’s nest by analyzing the composition of volatile substances,this paper could provide a new idea and reference data for quality evaluation and authenticity identification of bird’s nest.