Estimation of soluble solids content of apple fresh juice by FTNIR spectroscopy

作者：Lu Hui-shan; Ying Yi-bin^*; Fu Xia-ping; Yu Hai-yan; Liu Yan-de; Tian Hai-qing

来源：Spectroscopy and Spectral Analysis, 2007, 27(3): 494-498.

• apple fresh juice
• Fourier transform
• near infrared spectrun
• soluble solids content
• non destructive measurement

The feasibility of Fourier transform near infrared (FTNIR) spectroscopic technology for rapid quantifying the soluble solids content (SSC) of apple fresh juice was investigated by means of spectral transmittance technique. A total of 60 juice samples were used to develop the calibration models. The relationship between laboratory SSC and FTNIR spectra of apple fresh juices was analyzed via principal component regression (PCR) and partial least squares (PLS) regression method using TQ 6. 2. 1 quantitative software. Models based on different spectral ranges were compared. Performance of different models was assessed in terms of root mean square errors of prediction (RMSEP) and correlation coefficients W) of validation set of samples. The best prediction models had a RMSEP of 0. 603 degrees Brix and correlation coefficient W) of 0. 997 for SSC. The results show that FTNIR transmittance technique is a feasible, accurate and fast method for non-invasive estimation of fruit fresh juice soluble solids content.

• 出版日期2007-3
• 单位浙江大学