| Nondestructive measurement of fresh tomato lycopene content and other physicochemical characteristics using visible-NIR spectroscopy. | |
| | |
MedLine Citation:
|
PMID: 18817411 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Measurement of fresh tomato fruit overall quality, and particularly lycopene content, is challenging in the context of high-volume production. An experiment was conducted to simultaneously measure various quality parameters of tomato in a nondestructive manner using vis-NIR reflectance spectroscopy and chemometrics. The sampling set included different cultivars that are obtainable from both retailers' shelves and two greenhouse producers. Results indicate that lycopene content was accurately predicted [r(2) = 0.98; root mean square error of cross-validation (RMSECV) = 3.15 mg/kg], along with color variables such as Hunter a (r(2) = 0.98), L, and b (r(2) = 0.92). Tomato color index (TCI) was better predicted (r(2) = 0.96) than the a/ b ratio (r(2) = 0.89). Firmness prediction, with an r(2) of 0.75, is comparable to what is reported in the literature for other fruits and may have a practical interest. Prediction of internal quality such as pH, soluble solids, titratable acidity, and electrical conductivity was less accurate, partly due to a low variability of these parameters among samples. Predictions were robust with regard to cultivars, except for pink variety tomato. The 400-1000 nm range gave results almost as accurate as the 400-1500 nm range. |
| | |
Authors:
|
Alain Clément; Martine Dorais; Marcia Vernon |
Publication Detail:
|
Type: Evaluation Studies; Journal Article Date: 2008-09-26 |
Journal Detail:
|
Title: Journal of agricultural and food chemistry Volume: 56 ISSN: 1520-5118 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2008 Nov |
Date Detail:
|
Created Date: 2008-11-06 Completed Date: 2008-12-31 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
|
Languages: eng Pagination: 9813-8 Citation Subset: IM |
Affiliation:
|
Food Research and Development Centre, Agriculture and Agri-Food Canada, 3600 Casavant Boulevard West, St-Hyacinthe, QC J2S 8E3, Canada. clementa@agr.gc.ca |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Carotenoids
/
chemistry* Fruit / chemistry Lycopersicon esculentum / chemistry* Spectroscopy, Near-Infrared / methods* Spectrum Analysis |
| Chemical | |
Reg. No./Substance:
|
36-88-4/Carotenoids; 502-65-8/lycopene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Stability evaluation of selected polyphenols and triterpene glycosides in black cohosh.
Next Document: Structure determination of 3-O-caffeoyl-epi-gamma-quinide, an orphan bitter lactone in roasted coffe...