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Measurement of anthocyanin content in flowering tea using near infrared spectroscopy combined with ant colony optimization |
College of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract To improve the detecting accuracy and rate of anthocyanin content in flowering teas, a detection method was proposed based on near infrared spectroscopy combined with interval PLS and ant colony optimization. The flowering tea spectra were divided into 12 intervals, and three subsets of No. 1, 9 and 10 were selected to establish an iPLS model. The calibration and prediction correlation coefficients were 0.901 3 and 0.864 2, and the RMSECV and RMSEP were 0.160 0 and 0.202 0 mg?g-1, respectively. The results show that compared with conventional iPLS, the ACO-iPLS can effectively select wavelength regions of near infrared spectroscopy and improve accuracy and robustness.
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Received: 18 March 2013
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