Non-destructive measurement of total soluble solid (TSS) content of dates using near infrared (NIR) imaging

The total soluble solid (TSS) content is one of the important quality attributes that determines the commercial value of dates. At present, TSS content in dates is measured using destructive techniques that are laborious and time consuming. In this study, the potential of a near infrared (NIR) imagi...

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Bibliographic Details
Published in:Emirates journal of food and agriculture 2014-11, Vol.26 (11), p.970
Main Authors: Manickavasagan, A, Ganeshmoorthy, K, Claereboudt, M R, Al-Yahyai, R, Khriji, L
Format: Article
Language:English
Subjects:
Cameras
Cultivars
Fruits
Light
Moisture content
Regression analysis
Skin
Software
Sugar
Variables
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Summary:The total soluble solid (TSS) content is one of the important quality attributes that determines the commercial value of dates. At present, TSS content in dates is measured using destructive techniques that are laborious and time consuming. In this study, the potential of a near infrared (NIR) imaging technique to determine TSS content of dates was evaluated. The area scan NIR camera which covers the full spectrum range of 900 nm-1,700 nm was used to capture the images of individual date fruits. Immediately following image acquisition, the TSS content (degrees Brix) of each sample was measured using a digital refractometer. The TSS content of dates was in the range of 34 degrees-63 degrees Brix and 14 degrees Brix-37 degrees Brix for tamar and khalal stages, respectively. The correlation coefficient between TSS content and NIR reflectance was 0.62 and 0.98 for three cultivars and two ripening stages, respectively.
ISSN:2079-052X
2079-0538
DOI:10.9755/ejfa.v26i11.18102