Zhu Chengxian, Gao Lei, Han Yaojie, OuYang QiRan, Zong Lijun, Li Lin, Zhang Chengwu, Liu Jinhua, Yu Hai-Dong, Huang Wei
Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 Jiangsu PR China
Xi'an Institute of Flexible Electronics, Northwestern Polytechnical University 127 West Youyi Road Xi'an 710072 Shaanxi PR China.
RSC Adv. 2019 Jun 11;9(32):18285-18291. doi: 10.1039/c9ra02516b. eCollection 2019 Jun 10.
Adulterated cooking oils and the repeated use of frying cooking oils are harmful to human health. Current techniques for the quality control of cooking oils such as gas chromatography and high performance liquid chromatography usually require expensive facilities, and they are complicated to operate. This paper describes a simple technique that uses magnetic levitation (MagLev) to analyse cooking oils based on density. We have demonstrated the application of MagLev to detect the quality of cooking oil by simulating adulterated sesame oil using peanut oil and frying soybean oil for different times. We have also demonstrated the use of MagLev to differentiate secondhand cooking oil from certified cooking oil. MagLev provides a portable and inexpensive method for the on-site inspection of cooking oils, and it may be extended to many other applications in food safety, environmental monitoring, medical diagnosis, and so on. The advantages of high sensitivity, low cost, and convenience of operation make MagLev especially useful for applications in resource-limited settings.
掺假食用油以及反复使用煎炸食用油对人体健康有害。目前用于食用油质量控制的技术，如气相色谱法和高效液相色谱法，通常需要昂贵的设备，且操作复杂。本文介绍了一种利用磁悬浮（MagLev）基于密度分析食用油的简单技术。我们通过用花生油模拟掺假芝麻油以及对大豆油进行不同时长的煎炸，展示了磁悬浮技术在检测食用油质量方面的应用。我们还展示了利用磁悬浮技术区分二手食用油和合格食用油。磁悬浮为食用油的现场检测提供了一种便携且廉价的方法，并且它可能会扩展到食品安全、环境监测、医学诊断等许多其他应用领域。高灵敏度、低成本和操作简便的优点使得磁悬浮技术在资源有限的环境中应用特别有用。
