化学
色谱法
己烷
气相色谱法
火焰离子化检测器
墨盒
材料科学
冶金
作者
Se-Jong Park,Jae‐Suk Choi,Ho-Soo Lim,Su-Jin Jang,So‐Hee Kim,Meehye Kim
出处
期刊:Korean Journal of Food Science and Technology
[Korean Society of Food Science and Technology]
日期:2013-10-31
卷期号:45 (5): 545-549
被引量:1
标识
DOI:10.9721/kjfst.2013.45.5.545
摘要
Liquid paraffin is a mixture of heavier alkanes derived from petroleum.It can be used as a lubricant in processing machinery, as a coating agent, or as a releasing agent.The purpose of this study was to analyze liquid paraffins in foods by using a gas chromatography-flame ionized detector (GC-FID).Liquid paraffin was extracted from the food samples using n-hexane.Non-polar aromatic or olefinic co-extractives were removed by alkaline permanganate oxidation followed by clean up on an aluminium oxide SPE cartridge before the GC-FID analysis.The results of recovery tests were 91.5-103.2%.Based on this optimized method, we investigated the amount of liquid paraffin in various food samples purchased from domestic markets.The levels of liquid paraffin in bread were 95.5±156.0mg/kg (0.008%), those in capsules were 40.2±54.5 mg/kg (0.001%), and those in dried fruits and vegetables were 3.0±18.1 mg/kg (0.0001%).No liquid paraffin was detected in fresh fruits and vegetables.We propose that our method can be used to monitor and detect liquid paraffin in foods for food safety management.
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