Evaluation of biological contaminants in foods by hyperspectral imaging (HSI): A review
Vejarano Mantilla, Ricardo David
Siche Jara, Raúl Benito
Tesfaye Yimer, Wendu
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Responding to the ever growing concern about safe foods and security, the food industries are forced to seek an emerging technology capable of detecting and quantifying contaminations, especially those of biological origin. Amongst the different emerging technologies, hyperspectral imaging (HSI) is considered a good alternative as it can be easly applied at all steps of the food production process and is a non-destructive technique. This paper reviews targeted analytical applications of HSI in monitoring biological contaminants in food. First, traditional techniques for detection of biological contaminants in foods are presented, where disadvantages for practical applications are highlighted and explained in detail in their respective sections. Second, prominent applications of HSI from the last decade to food safety and quality assessment are reviewed, especifically focusing on both deteriorative and pathogenic microorganisms, microbial toxins and parasites; whether acting individually or collectively spoil food products and/or represent a health risk to the consumers. Finally, relevant current and future challenges, advantages and disadvantages of HSI applications are briefly examined.