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NONDESTRUCTIVE TESTING OF SOLUBLE SOLIDS CONTENT IN CERASUS HUMILIS USING VISIBLE / NEAR-INFRARED SPECTROSCOPY COUPLED WITH WAVELENGTH SELECTION ALGORITHM
- Source :
- INMATEH Vol.61. 61:251-262
- Publication Year :
- 2020
- Publisher :
- R and D National Institute for Agricultural and Food Industry Machinery - INMA Bucharest, 2020.
-
Abstract
- Soluble solids content (SSC) is one of the most important quality attributes affecting the taste and maturity of fresh fruit. In this study, with the cerasus humilis fruit as the research object, a prediction model of soluble solid content (SSC) in cerasus humilis (CH) is established based on visible / near-infrared spectroscopy to explore a nondestructive testing method of the interior quality of CH. The visible / near-infrared spectral info (350-2500nm) of 160 CHs was collected to extract the reflection spectrum, establishing the linear model (PLSR) and non-linear model (LS-SVM) of CH’s spectral info and SSC. The prediction performance and stability of the model were justified using several statistical indicators namely correlation coefficient of the prediction set (Rp), the root mean square error of the prediction set (RMSEP), and the residual predictive deviation (RPD) index. Results showed that multiplicative scatter correction (MSC) was proved to be the best preprocessing method, UVE-CARS was the optimal method of dimension reduction, the quantities of characteristic wavelengths was 10 and the optimal model was UVE-CARS-PLSR, in which Rc is 0.8995, Rp is 0.8579, RMSEC is 0.8897, RMSEP is 0.9059, and RPD is 1.8766, indicating that the redundant data of the original spectrum can be reduced, the wavelength dimensions can be reduced, valid info can be retained and data processing can be simplified as UVE-CARS extracts characteristic wavelengths. Reference and theoretical basis are provided in this research for future research and development of portable detector and online sorting detection of CH internal quality.
- Subjects :
- Materials science
Visible near infrared
business.industry
Mechanical Engineering
Cerasus humilis
Analytical chemistry
04 agricultural and veterinary sciences
040401 food science
Industrial and Manufacturing Engineering
040501 horticulture
Wavelength
0404 agricultural biotechnology
Soluble solids
Nondestructive testing
Content (measure theory)
0405 other agricultural sciences
Spectroscopy
business
Food Science
Subjects
Details
- ISSN :
- 20682239 and 20684215
- Volume :
- 61
- Database :
- OpenAIRE
- Journal :
- INMATEH Vol.61
- Accession number :
- edsair.doi...........3e145a50234ccaef79da3db9800ac857
- Full Text :
- https://doi.org/10.35633/inmateh-61-28