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    Hybrid nanocomposite thin film for hydrogen sulfide (H2S) gas sensor based on bacterial cellulose nanocrystals (BCNCs) has resulted in high demand of environmentally friendly nanomaterials. Films were prepared using thermal spray coating that sprayed hybrid nanocomposite suspension based on silver nanoparticles (AgNPs)-loaded BCNCs's surface and alginate-molybdenum trioxide (MoO3NPs) onto PET substratum. In this study, a novel food package label characterized as H2S gas sensor for meat spoilage is based on an optically transparent coated film with thickness ranging from 0.73 to 2.18 μm. Sensor characteristics with different suspension concentrations and various H2S gas concentrations were evaluated. The highest sensitivity to H2S with the limit of detection (LOD) (3.27 ppm) and the limit of quantification (LOQ) (10.94 ppm) was exhibited in 1%w/v suspension. Label prototypes which respond as visible color changes through naked-eye to H2S gas released during meat spoilage, monitored at 4 °C and varying storage times were conducted. Copyright © 2020 Elsevier Ltd. All rights reserved.


    Pongpat Sukhavattanakul, Hathaikarn Manuspiya. Influence of hydrogen sulfide gas concentrations on LOD and LOQ of thermal spray coated hybrid-bacterial cellulose film for intelligent meat label. Carbohydrate polymers. 2021 Feb 15;254:117442

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    PMID: 33357913

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