丝素
丝绸
三甲胺
聚苯胺
材料科学
聚合
纳米技术
化学
化学工程
复合材料
聚合物
生物化学
工程类
作者
Yahui Li,Yanxiao Li,Jiyong Shi,Zhihua Li,Xin Wang,Xuetao Hu,Yunyun Gong,Xiaobo Zhang
出处
期刊:Foods
[MDPI AG]
日期:2022-08-08
卷期号:11 (15): 2372-2372
被引量:5
标识
DOI:10.3390/foods11152372
摘要
A novel, operational, reliable, flexible gas sensor based on silk fibroin fibers (SFFs) as a substrate was proposed for detecting the freshness of pork. Silk is one of the earliest animal fibers utilized by humans, and SFFs exposed many biological micromolecules on the surface. Thus, the gas sensor was fabricated through polyaniline (PANI) and silver nanowires (AgNWs) and deposited on SFFs by in-suit polymerization. With trimethylamine (TMA) as a model gas, the sensing properties of the PANI/AgNWs/silk composites were examined at room temperature, and the linear correlativity was very prominent between these sensing measures and the TMA measures in the range of 3.33 μg/L-1200 μg/L. When the pork sample is detected by the sensor, it can be classified into fresh or stale pork with the total volatile basic nitrogen (TVB-N) as an index. The result indicated that the gas sensor was effective and showed great potential for applications to detect the freshness of pork.
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