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Proceedings Paper

Nondestructive measurement of acidity of Chinese bayberry using Vis/NIR spectroscopy techniques
Author(s): Xiaoli Li; Yong He
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Paper Abstract

In this research, the potential of using the Visible/Near Infrared Spectroscopy (Vis/NIRS) was investigated for measuring the acidity of Chinese bayberry (Myrica rubra Zucc. ), and the relationship is established between nondestructive Vis/NIR spectral measurement and the major physiological property of Chinese bayberry. Intact Chinese bayberry fruit were measured by reflectance Vis/NIR in 325-1075 nm range. The data set as the logarithms of the reflectance reciprocal (absorbance (loglIR)) was analyzed in order to build the best calibration model for this characteristic, using some spectral pretreatments and multivariate calibration techniques such as partial least square regression (PLS). The models for the pH (r=0.963), standard error ofprediction (SEP) 0.21 with a bias of 0.138; shown the excellent prediction performance. The Vis/NIR spectroscopy technique had significantly greater accuracy for determining the pH. It was concluded that the Vis/NIRS measurement technique seems reliable to assess the quality attribute of Chinese bayberry nondestructively.

Paper Details

Date Published: 27 October 2006
PDF: 7 pages
Proc. SPIE 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine, 60472D (27 October 2006); doi: 10.1117/12.710950
Show Author Affiliations
Xiaoli Li, Zhejiang Univ. (China)
Yong He, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 6047:
Fourth International Conference on Photonics and Imaging in Biology and Medicine
Kexin Xu; Qingming Luo; Da Xing; Alexander V. Priezzhev; Valery V. Tuchin, Editor(s)

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