Journal
JOURNAL OF NEAR INFRARED SPECTROSCOPY
Volume 17, Issue 4, Pages 203-212Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1255/jnirs.842
Keywords
NIR spectroscopy; insect infestation; non-destructive detection; fruit; blueberry; instrument comparison
Categories
Funding
- Wild Blueberry Commission of Maine
- USDA-CSREES
Ask authors/readers for more resources
A near infrared (NIR) spectroscopy system for rapid, automated and non-destructive detection of insect infestation in blueberries is desirable to ensure high quality fruit for the fresh and processed markets. The selection of suitable instruments is the first step in system development. Three diode array spectrophotometers were evaluated based on technical specifications and capacity for larva detection in wild blueberries (Vaccinium angustifolium) using discriminant partial least squares (PLS) regression models. These instruments, differing mainly in wavelength range and detector type, comprised two spectro photometers with scanning wavelength ranges of 6501100 nm and 600-1700 nm and an imaging spectrograph with the scanning range of 950-1400 nm. The assessed factors affecting predictions included signal-to-noise ratio, wavelength range, resolution, measurement configuration, spectral pre-processing and absorbance bands related to infestation. The scanning spectrophotometers demonstrated higher signal-to-noise ratios with infestation prediction accuracies of 82% and 76.9% compared to the imaging spectrograph with 58.9% accuracy. Resolution, spectral pre-processing and measurement configuration had a lesser effect on model accuracy than wavelength range. The 950-1690 nm bands were identified as important for infestation prediction. In general, NIR spectroscopy should be a feasible technique for rapid classification of insect infestation in fruit.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available