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Hyperspectral laser-induced fluorescence imaging for nondestructive assessing soluble solids content of orange
Liu Muhua *,Shufen Hu,Huaiwei Lin,Enyou Guo
Jiangxi Agricultrual University
*Correspondence author
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Funding: none
Opened online:12 February 2007
Accepted by: none
Citation: Liu Muhua,Shufen Hu,Huaiwei Lin.Hyperspectral laser-induced fluorescence imaging for nondestructive assessing soluble solids content of orange[OL]. [12 February 2007] http://en.paper.edu.cn/en_releasepaper/content/11134
 
 
Fluorescence imaging is a promising technique for assessing postharvest quality of fruit. This paper reports on using a hyperspectral laser-induced fluorescence imaging technique for measurement soluble solids content (SSC) of orange fruit. A continuous wave laser (632 nm) was used as an excitation source for inducing fluorescence in oranges. Fluorescence scattering images were acquired from ‘Nanfeng’ oranges by a hyperspectral imaging system at the instance of laser illumination (0 min) in range of 700-1000nm. The hyperspectral fluorescence image data were represented by mean spectra of sub-image. The fruit soluble solids content were measured using hand-held refractometer. A line regressing method was used for developing prediction models to predict fruit soluble solids content. Excellent predictions were obtained for soluble solids content with the correlation coefficient of prediction of R=0.999（training sample）and R=0.998 (validation sample). The results show that hyperspectral laser-induced fluorescence imaging is a very good method for nondestructive assessing soluble solids content of orange.
Keywords:hyperspectral laser-induced fluorescence imaging, orange, soluble solids content
 
 
 

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