Self-assembled micro-structured sensors for food safety in paper based food packaging

被引：7
|
作者：
Hakovirta, M. [1 ]
Aksoy, B. [1 ]
Hakovirta, J. [1 ]
机构：
[1] Auburn Univ, Alabama Ctr Paper & Bioresource Engn, Auburn, AL 36849 USA
来源：
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2015年 / 53卷
关键词：
Packaging; Food safety; Chemical sensor; Diatoms; Paper; Ammonia; IMMUNOCHROMATOGRAPHIC ASSAY; REAL-TIME; SALMONELLA; DISCRIMINATION; PATHOGENS; PRODUCTS; BACTERIA; ANTIGEN; DEVICE;
D O I：
10.1016/j.msec.2015.04.020
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
Natural self-assembled microstructured particles (diatomaceous earth) were used to develop a gas sensor paper with detection mechanism based on visible and distinct color changes of the sensor paper when exposed to volatile basic nitrogen compounds. The coating formulation for paper was prepared by applying diatomites, polyvinyl alcohol (PVOH), and pH sensitive dyes on acidic paper substrate. The surface coating was designed to allow a maximum gas flow through the diatomite sensors. The produced sensor paper was tested for sensitivity using different ammonia concentrations and we observed a sensitivity lower limit at 63 ppm. As a comparison, the results show comparable sensitivity levels to carbon nanotube based sensor technologies reported in literature. (C) 2015 Published by Elsevier B.V.
引用
收藏
页码：331 / 335
页数：5
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