Abstract
Near-infrared (NIR) spectroscopy is the significant non-invasive technology in the detection of medicines and edible products, which can directly transmit through general plastic and glass bottles and possess the good capacity of qualification and quantification. The main advantages of NIR spectra are that the pollution caused by exposure to the air can be avoided to a great extent, the direct contact between samples and testers can be reduced, and the rapid and undifferentiated scanning of samples can be realized, etc. In this paper, we provide a review of the non-invasive detection studies using NIR spectra for the quantitative analysis and authenticity/qualitative identification of medicines and edible products in detail, evaluate the experimental design and the relevant data analysis methods used, and summarize the problems that should be paid attention to and improvement suggestions when conducting similar research in the future.
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