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Proceedings Paper

Vis/NIR spectroscopy technique for determination quality attributes of tomato fruit
Author(s): Yong He; Xiaoli Li; Antihus Hernandeza; Annia Garciaa
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Paper Abstract

In this research, the potencial of using the Visible/Near Infrared Spectroscopy (Vis/NIRS) was investigated for measuring the quality attributes of Tomato 'Heatwave' (Lycopersicum esculentum), and the relationship is established between nondestructive Vis/NIR spectral measurements and the major physiological properties of tomto. The properties include fruit firmness, soluble solids content (SSC) and acidity (pH). Intact tomato fruit were measured by reflectance Vis/NIR in 350- 2500 nm range. The data set as the logarithms of the reflectance reciprocal (absorbance (log1/R)) was analyzed in order to build the best calibration model for each characteristic, using some spectral pretreatments and multivariate calibration techniques such as principal component regression (PCR) and partial least square regression (PLS). The models for the SSC (r= 0.90), standard error of prediction (SEP)= 0.19 °Brix with three factors; pH (r= 0.83), standard error of prediction (SEP)= 0.09°Brix with factors, compression force r= 0.81), standard error of prediction (SEP) =16.017°Brix N with six factors, and puncture force (r= 0.83), standard error of prediction (SEP) = 1.18°Brix N with three factors, shown the good to excellent prediction performance. The Vis/NIR spectroscopy technique had significantly greater accuracy for determining the SSC. It was concluded that the Vis/NIRS measurement technique seems reliable to assess the quality attributes of tomato nondestructively.

Paper Details

Date Published: 3 November 2005
PDF: 10 pages
Proc. SPIE 6043, MIPPR 2005: SAR and Multispectral Image Processing, 60431Y (3 November 2005); doi: 10.1117/12.654948
Show Author Affiliations
Yong He, Zhejiang Univ. (China)
Xiaoli Li, Zhejiang Univ. (China)
Antihus Hernandeza, Zhejiang Univ. (China)
Havana Agricultural Univ. (Cuba)
Annia Garciaa, Zhejiang Univ. (China)
Havana Agricultural Univ. (Cuba)

Published in SPIE Proceedings Vol. 6043:
MIPPR 2005: SAR and Multispectral Image Processing
Liangpei Zhang; Jianqing Zhang; Mingsheng Liao, Editor(s)

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