A New Non-targeted Screening Method for Milk Powder Safety Based on Improved Spectral Angle Mapping

doi:10.7506/spkx1002-6630-20190625-313

Abstract

Abstract: In this paper, a moving window spectral angle mapping-based Raman hyperspectral imaging method (MWSAM-RHIM) was proposed for non-targeted screening for milk powder safety, which could effectively compensate for the shortcomings of traditional targeted detection methods. In MWSAM-RHIM, an improved spectral angle mapping algorithm was used to calculate the spectral similarity of unknown samples. The pixels beyond the threshold were marked as adulterated to generate a visual binary image. The results showed that the recognition rates of negative and positive samples by MWSAM-RHIM method both reached 93.3%, indicating that this method can meet the needs of non-targeted screening for safety of dairy products and provide a new idea for rapid screening of other food samples.

Key words: Raman hyperspectral imaging, milk powder safety, spectral angle mapping, non-targeted screening, food safety

CLC Number:

TS252.7

ZONG Jing, HUANG Zhixuan, CHEN Xiaoyu, CHEN Da. A New Non-targeted Screening Method for Milk Powder Safety Based on Improved Spectral Angle Mapping[J]. FOOD SCIENCE, 2020, 41(2): 315-320.

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A New Non-targeted Screening Method for Milk Powder Safety Based on Improved Spectral Angle Mapping

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