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Proceedings Paper

Nondestructive assessment of internal quality of Gannan navel orange by photodiode array spectrometer
Author(s): Xudong Sun; Huamao Zhou; Wenchao Zhou; Yande Liu
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Paper Abstract

The photodiode array (PDA) spectrometer combined with partial least square (PLS) was developed to rapid measure the internal quality indices of Gannan navel orange nondestructively in the wavelength range of 550-950nm. The original spectra were processed by standard normal variate (SNV) and Savitzky-Golay (SG) smooth method. The optimal models of internal quality indices were determined after different spectral windows chosen. The optimal model of soluble solids content (SSC), total acidity (TA) and ratio of them were developed with RMSECV = 0.5118Brix%, 0.0856% and 2.0617 by PLS method, respectively. The optimal spectral windows were 700-950nm, 600-750nm and 600-950nm for measuring internal indices nondestructively by PDA. The results illustrated that PDA with PLS method were a rapid tool to measure the internal quality indices of Gannan navel orange nondestructively.

Paper Details

Date Published: 6 March 2009
PDF: 8 pages
Proc. SPIE 7280, Seventh International Conference on Photonics and Imaging in Biology and Medicine, 728013 (6 March 2009); doi: 10.1117/12.820344
Show Author Affiliations
Xudong Sun, Jiangxi Agricultural Univ. (China)
Huamao Zhou, Jiangxi Agricultural Univ. (China)
Wenchao Zhou, Jiangxi Agricultural Univ. (China)
Yande Liu, Jiangxi Agricultural Univ. (China)


Published in SPIE Proceedings Vol. 7280:
Seventh International Conference on Photonics and Imaging in Biology and Medicine
Qingming Luo; Lihong V. Wang; Valery V. Tuchin, Editor(s)

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