Applications of carbon quantum dots in detection and packaging of foods
2022
shabnam sistani | Hajar Shekarchizadeh
Carbon quantum dots are a new generation of carbon nanoparticles that have good potential for food analysis and packaging due to their unique properties such as excellent fluorescence properties, easy synthesis, good biocompatibility, large functional groups, and low toxicity. Today, carbon quantum dots have replaced semiconductor quantum dots due to their non-toxicity. The use of carbon dots in packaging materials due to their antioxidant, antimicrobial and barrier properties increases product shelf life, reduces the growth of microorganisms, improves mechanical properties, the barrier against gases, UV light blocker, and reduces food waste. This paper aims to get acquainted with carbon quantum dots and synthesis methods and study their optical properties. Then, the principles of fluorescence sensor design, including the mechanism of fluorescence quenching and recovery and their application in food samples to detect food additives, pathogens, antibiotic residues, insecticides, heavy metals, and nutrients will be examined. Finally, the use of carbon dots in improved, active, intelligent and bio-packaging will then be discussed.
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