摘要
目的建立固相微萃取-气相色谱-质谱联用法检测物流运输前后液态乳质量。方法利用顶空固相微萃取,结合气质联用技术和吹扫捕集法分析液态乳制品中挥发性成分,检测牛奶中的氯仿和脂质降解程度。结果液态乳制品样品中有7种挥发性成分具有指示作用,主要是醛和酮;使用顶空分析能够量化氯仿污染物,脂肪分解的程度可以通过测量游离脂肪酸来量化。结论脂肪酸酶解产物可作为液态乳制品物流过程质量控制的生物标志物,固相微萃取的灵敏度和重现性满足液态乳制品物流过程的质量控制的要求。
Objective To detect the quality of raw milk before and after the logistics by solid-phase microextraction-gas chromatography-mass spectrometry （SPME-GC-MS）. Methods The volatile components in liquid dairy products were analyzed by headspace solid-phase microextraction, combined with GC-MS and purge and trap method to detect chloroform and lipid degradation in milk. Results There were seven kinds of volatile components in the liquid dairy product samples, which were mainly aldehydes and ketones. Through headspace analysis to quantify chloroform contaminants, the extent of lipolysis could be quantified by measuring free fatty acids. Conclusion Fatty acid hydrolyzate can be used as a biomarker for the quality control of liquid dairy product during the logistics process. The sensitivity and reproducibility of solid-phase microextraction can meet the quality control requirements of liquid dairy product during the progress of logistics.
作者
杨帅
陈成
程蕾
郭晓雅
车会莲
YANG Shuai, CHEN Cheng, CHENG Lei, GUO Xiao-Ya, CHE Hui-Lian(China Agricultural University Special Food Research Center, College of Food Science and Nutrition Engineering, China Agricultural University, Beijing 100083, Chin)
出处
《食品安全质量检测学报》
CAS
2018年第5期1079-1083,共5页
Journal of Food Safety and Quality
基金
浙江省食品物流装备技术研究重点实验室开放基金~~
关键词
顶空分析
固相微萃取
气相色谱一质谱联用法
挥发性物质
headspace analysis
solid-phase microextraction
gas chromatography-mass spectrometry
volatilematerials
