FT-NIR diffuse reflectance spectroscopy for kiwifruit firmness detection
Tóm tắt
This research was to study the potential of Fourier transform near-infrared (FT-NIR) diffuse reflectance spectroscopy as a nondestructive way for firmness measurement of “Qinmei” kiwifruit. NIR spectra were acquired from 800 nm to 2500 nm with different combinations of resolution (2, 4, 8, 16, and 32 cm−1) and scan number (32, 64 and 128). Original spectra, along with first and second derivative treatments, were analyzed with and without preprocessing. Two preprocessing methods were investigated, including multiplicative scattering correction (MSC) and standard normal variate (SNV). Partial least square (PLS) model for original spectra of 2 cm−1 resolution and 64 scan number without preprocessing indicated good results for calibration: correlation coefficient (r) of 0.89, root mean square error of calibration (RMSEC) of 4.09 N. The results showed that NIR diffuse reflectance spectroscopy was feasible to predict the firmness of “Qinmei” kiwifruit.
Tài liệu tham khảo
R.K. Cho, K.H. Lee, M. Iwamoto, Determination of firmness of intact apple fruit by near-infrared reflectance spectroscopy, in Proc.6th Int. Diffuse Reflect. Spectr. Conf., ed. by R.A. Taylor (NIR Publications, West Sussex, U.K., 1992), pp. 71–76
C.D. Elridge, Int. J. Remote Sensing 11(6), 1175–1195 (1995)
B.G. Osborne, T. Fearn, P.H. Hindle, Practical NIR Spectroscopy. Longman Scientific and Technical, London, U.K (1993)
V.A. McGlone, S. Kawano, Postharvest Biol. Technol. 13, 131–141 (1998)
R. Chalucova, G. Krivoshiev, M. Mukarev, V. Kalinov, C.N.G. Scotter, Lebensm.-Wiss. u.-Technol. 33, 489–498 (2000)
R. Lu, Trans. ASAE 44(5), 1265–1271 (2001)
R. Lu, D. Ariana, Appl. Eng. Agri. 18(5), 585–590 (2002)
B. Park, J.A. Abbott, K.J. Lee, C.H. Choi, K.H. Choi, Trans. ASAE 46(6), 1721–1731 (2003)
C.V. Dijk, C. Boeriu, T. Stolle-Smits, L.M.M. Tijskens, The firmness of stored tomatoes (cv. Tradiro). 2. kinetic and near infrared models to describe pectin degrading enzymes and firmness loss. J. Food Enginering In Press, Corrected Proof, Available online 1 September 2005
M. Zude, B. Herold, J. Roger, B. Veronique, S. Landahl, Non-destructive tests on the predictionof apple fruit flesh firmness and soluble solids content on tree and in shelf life. J. Food Engineering, In Press, Corrected Proof, Available online 5 August 2005
Q. Zhao, G. Zhang, X. Chen, Optics Precision Eng. 13(1), 53–58 (2005)
X. Chu, H. Yuan, W. Lu, Progress Chem. 16(4), 528–541 (2004)