Scientia Agricultura Sinica ›› 2007, Vol. 40 ›› Issue (8): 1760-1766 .

• HORTICULTURE • Previous Articles     Next Articles

A Approach to Nondestructive Measure Vitamin C Content of Orange With Near-infrared Spectroscopy Treated by Wavelet Transformation

  

  1. 华中农业大学工程技术学院
  • Received:2006-10-23 Revised:2007-03-23 Online:2007-08-10 Published:2007-08-10

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Abstract: In order to quest a approach for measure vitamin C content of orange, based on wavelet transformation by different decomposing level, the near-infrared spectroscopy signals of 100 intact orange samples were do-noised and some PLS-CV (partial least squared-cross validation ) operations were proposed for the prediction of orange Vc ( Vitamin C ) content with the reconstructed spectra after do-noised. The results show that the PLS-CV results were not the same when the wavelet decomposing level was different. PLS-CV result was best at a wavelet decomposing level of 4. Its R was 0.9574, and its RMSECV was 3.9mg/100g . Therefore, it is concluded that the FT-NIR model treated by wavelet do-noised can be feasible to detect Vc content of orange rapidly and nondestructively.

Key words: orange, near-infrared spectroscopy, wavelet do-noised, partial least squared

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