Chinese Journal of Lasers, Volume. 44, Issue 11, 1111001(2017)
Measurement of Iodine Value of Pork′s Subcutaneous Adipose Tissue by Interval Partial Least Square and Raman Spectroscopy
Figures & Tables(8)
Fig. 4. Raman spectra processed by different methods. (a) SG smoothing; (b) first derivative; (c) 8th order polynomial fitting; (d) standard normal variate
Fig. 5. Statistical results of variables selected by interval partial least square
Fig. 6. Modeling results of interval partial least square. (a) Calibration set; (b) prediction set
Table 1. Distribution of iodine value in fat samples10-2
View tableTable 1. Distribution of iodine value in fat samples10-2
Data set Minimum Maximum Mean Standard deviation Calibration set 59.72 92.15 71.80 8.42 Prediction set 61.09 83.62 71.43 7.41
Table 2. Modeling results of partial least square for iodine value in full wavelength
View tableTable 2. Modeling results of partial least square for iodine value in full wavelength
Preprocessing method Latent variables R cRMSEC /10-2 R pRMSEP /10-2 Raw spectrum 6 0.9251 3.0617 0.9220 3.5648 SG smoothing 7 0.9268 3.1656 0.9262 3.0765 8th order polynomial fitting 4 0.9314 3.0684 0.9314 3.0609 First derivative 4 0.9762 1.8815 0.8516 3.3773 Standard normal variate 6 0.9693 2.0710 0.9090 3.4428 SG and polynomial fitting 6 0.9388 2.9017 0.8869 3.7101 Polynomial fitting and first derivative 4 0.9772 1.8414 0.8563 3.3448
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Zhao Fang, Peng Yankun. Measurement of Iodine Value of Pork′s Subcutaneous Adipose Tissue by Interval Partial Least Square and Raman Spectroscopy[J]. Chinese Journal of Lasers, 2017, 44(11): 1111001
Paper Information
Category: Spectroscopy
Received: Jun. 5, 2017
Accepted: --
Published Online: Nov. 17, 2017
The Author Email: Yankun Peng (ypeng@cau.edu.cn)
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