PH—Postharvest Technology: Comparison of Fourier Transform and Dispersive Near-Infrared Reflectance Spectroscopy for Apple Quality Measurements
✍ Scribed by Ann Peirs; Nico Scheerlinck; Kathleen Touchant; Bart M. Nicolaı̈
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 466 KB
- Volume
- 81
- Category
- Article
- ISSN
- 1537-5110
No coin nor oath required. For personal study only.
✦ Synopsis
The large amount of publications about quality measurements of horticultural products with near-infrared (NIR) re#ectance spectroscopy demonstrates its usefulness for measuring their internal composition in a nondestructive way. Up to now, dispersive instruments have been used exclusively to yield satisfactory calibration models. In this study, Fourier transform (FT) NIR spectroscopy has been compared to dispersive NIR spectroscopy. The instrument stability, the light penetration depth and the predictive capacity of some quality characteristics between both instruments were compared. The FT spectrophotometer achieved a higher signal-to-noise ratio. The light penetration depth in a Jonagold apple di!ered between the two instruments: the FT spectrophotometer established a lower penetration depth. Both instruments were able to measure the quality characteristics (soluble solids content, "rmness and titratable acidity) with comparable accuracy. Based on the results, it was concluded that FT}NIR re#ectance spectroscopy is an interesting alternative for standard dispersive instruments for the non-destructive quality evaluation of apples. 2002 Published by Elsevier Science Ltd.