Journal
APPLIED SCIENCES-BASEL
Volume 11, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/app11073209
Keywords
infrared spectroscopy; handheld spectrometer; fresh tomato quality; partial least squares (PLS); field production
Categories
Funding
- CAPES [88881.187998/2018-01]
- CNPq-Research Productivity Fellowship [309043/2016-6, 302866/2017-5]
Ask authors/readers for more resources
Portable spectrometers show potential in quickly and accurately assessing various quality attributes of different types of tomatoes, demonstrating a practical and efficient method for food quality analysis.
Portable spectrometers are promising tools that can be an alternative way, for various purposes, of analyzing food quality, such as monitoring in a few seconds the internal quality during fruit ripening in the field. A portable/handheld (palm-sized) near-infrared (NIR) spectrometer (Neospectra, Si-ware) with spectral range of 1295-2611 nm, equipped with a micro-electro-mechanical system (MEMs), was used to develop prediction models to evaluate tomato quality attributes non-destructively. Soluble solid content (SSC), fructose, glucose, titratable acidity (TA), ascorbic, and citric acid contents of different types of fresh tomatoes were analyzed with standard methods, and those values were correlated to spectral data by partial least squares regression (PLSR). Fresh tomato samples were obtained in 2018 and 2019 crops in commercial production, and four fruit types were evaluated: Roma, round, grape, and cherry tomatoes. The large variation in tomato types and having the fruits from distinct years resulted in a wide range in quality parameters enabling robust PLSR models. Results showed accurate prediction and good correlation (R-pred) for SSC = 0.87, glucose = 0.83, fructose = 0.87, ascorbic acid = 0.81, and citric acid = 0.86. Our results support the assertion that a handheld NIR spectrometer has a high potential to simultaneously determine several quality attributes of different types of tomatoes in a practical and fast way.
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