使用聚苯胺/氧化镍纳米颗粒修饰的石英晶体微天平（QCM）传感器快速分析区分猪明胶和牛明胶。
Rapid analysis to distinguish porcine and bovine gelatin using PANI/NiO nanoparticles modified Quartz Crystal Microbalance (QCM) sensor.
作者信息
Kurniawan Fredy, Nugroho Ari, Baskara Rangga Aji, Candle Lourentia, Pradini Diwasasri, Madurani Kartika A, Sugiarso Raden Djarot, Juwono Hendro
机构信息
Laboratory of Instrumentation and Analytical Sciences, Chemistry Department, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia.
ITS Halal Center, Institute of Research and Community Service, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia.
出版信息
Heliyon. 2022 May 11;8(5):e09401. doi: 10.1016/j.heliyon.2022.e09401. eCollection 2022 May.
Rapid analysis to distinguish porcine and bovine gelatin using a modified Quartz Crystal Microbalance (QCM) sensor has been studied. The PANI was deposited on the sensor surface using electropolymerization, and then nickel nanoparticles were deposited by layer by layer (LbL) technique. The modified QCM sensor's performance was compared to an unmodified sensor in porcine and bovine gelatin at neutral, acidic, and alkaline conditions. The result shows that the unmodified sensor cannot distinguish between porcine and bovine gelatin, whereas the modified QCM sensor produces a different response. Porcine gelatin shows an increasing frequency response, but in contrast, bovine gelatin decreases frequency response at the alkaline condition. The time response was 2 min with a detection limit of 51.2 ppm and 8.7 ppm for porcine and bovine gelatin, respectively. Further investigation shows that the modified sensor can analyze porcine gelatin contamination in the a mixed gelatin sample.
研究了使用改进的石英晶体微天平（QCM）传感器快速区分猪明胶和牛明胶的方法。通过电聚合将聚苯胺沉积在传感器表面，然后采用层层（LbL）技术沉积镍纳米颗粒。在中性、酸性和碱性条件下，将改进的QCM传感器与未改进的传感器在猪明胶和牛明胶中的性能进行了比较。结果表明，未改进的传感器无法区分猪明胶和牛明胶，而改进的QCM传感器产生了不同的响应。猪明胶呈现频率响应增加，而相比之下，牛明胶在碱性条件下频率响应降低。时间响应为2分钟，猪明胶和牛明胶的检测限分别为51.2 ppm和8.7 ppm。进一步研究表明，改进后的传感器可以分析混合明胶样品中的猪明胶污染情况。
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