Nondestructive measurement of acidity of Chinese bayberry using Vis/NIR spectroscopy techniques

Xiaoli Li; Yong He

doi:10.1117/12.710950

27 October 2006 Nondestructive measurement of acidity of Chinese bayberry using Vis/NIR spectroscopy techniques

Xiaoli Li, Yong He

Proceedings Volume 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine; 60472D (2006) https://doi.org/10.1117/12.710950
Event: Fourth International Conference on Photonics and Imaging in Biology and Medicine, 2005, Tianjin, China

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 Sieb.et 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.

Citation Download Citation

Xiaoli Li and Yong He "Nondestructive measurement of acidity of Chinese bayberry using Vis/NIR spectroscopy techniques", Proc. SPIE 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine, 60472D (27 October 2006); https://doi.org/10.1117/12.710950

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