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Multispectral imaging for determination of astaxanthin concentration in salmonids.

Dissing BS, Nielsen ME, Ersbøll BK, Frosch S - PLoS ONE (2011)

Bottom Line: A PLSR model was calibrated to predict astaxanthin concentration from novel images, and showed good results with a RMSEP of 0.27.For comparison a similar model were built for normal color images, which yielded a RMSEP of 0.45.The acquisition speed of the multispectral imaging system and the accuracy of the PLSR model obtained suggest this method as a promising technique for rapid in-line estimation of astaxanthin concentration in rainbow trout fillets.

View Article: PubMed Central - PubMed

Affiliation: Department of Informatics and Mathematical Modeling, Technical University of Denmark, Kgs. Lyngby, Denmark.

ABSTRACT
Multispectral imaging has been evaluated for characterization of the concentration of a specific cartenoid pigment; astaxanthin. 59 fillets of rainbow trout, Oncorhynchus mykiss, were filleted and imaged using a rapid multispectral imaging device for quantitative analysis. The multispectral imaging device captures reflection properties in 19 distinct wavelength bands, prior to determination of the true concentration of astaxanthin. The samples ranged from 0.20 to 4.34 g per g fish. A PLSR model was calibrated to predict astaxanthin concentration from novel images, and showed good results with a RMSEP of 0.27. For comparison a similar model were built for normal color images, which yielded a RMSEP of 0.45. The acquisition speed of the multispectral imaging system and the accuracy of the PLSR model obtained suggest this method as a promising technique for rapid in-line estimation of astaxanthin concentration in rainbow trout fillets.

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Distribution of measured astaxanthin.A histogram of the reference data shows the sample count as a function of g astaxanthin per fish, revealing a high number of observations around 2g.
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pone-0019032-g004: Distribution of measured astaxanthin.A histogram of the reference data shows the sample count as a function of g astaxanthin per fish, revealing a high number of observations around 2g.

Mentions: The results from the chemical measurements of the astaxanthin content are presented in Figure 4. The astaxanthin concentration in the samples ranges from 0.2 to 4.34 g per g fish with a mean of 1.69 g per g fish and a standard deviation of 0.95 g per g fish.


Multispectral imaging for determination of astaxanthin concentration in salmonids.

Dissing BS, Nielsen ME, Ersbøll BK, Frosch S - PLoS ONE (2011)

Distribution of measured astaxanthin.A histogram of the reference data shows the sample count as a function of g astaxanthin per fish, revealing a high number of observations around 2g.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3091859&req=5

pone-0019032-g004: Distribution of measured astaxanthin.A histogram of the reference data shows the sample count as a function of g astaxanthin per fish, revealing a high number of observations around 2g.
Mentions: The results from the chemical measurements of the astaxanthin content are presented in Figure 4. The astaxanthin concentration in the samples ranges from 0.2 to 4.34 g per g fish with a mean of 1.69 g per g fish and a standard deviation of 0.95 g per g fish.

Bottom Line: A PLSR model was calibrated to predict astaxanthin concentration from novel images, and showed good results with a RMSEP of 0.27.For comparison a similar model were built for normal color images, which yielded a RMSEP of 0.45.The acquisition speed of the multispectral imaging system and the accuracy of the PLSR model obtained suggest this method as a promising technique for rapid in-line estimation of astaxanthin concentration in rainbow trout fillets.

View Article: PubMed Central - PubMed

Affiliation: Department of Informatics and Mathematical Modeling, Technical University of Denmark, Kgs. Lyngby, Denmark.

ABSTRACT
Multispectral imaging has been evaluated for characterization of the concentration of a specific cartenoid pigment; astaxanthin. 59 fillets of rainbow trout, Oncorhynchus mykiss, were filleted and imaged using a rapid multispectral imaging device for quantitative analysis. The multispectral imaging device captures reflection properties in 19 distinct wavelength bands, prior to determination of the true concentration of astaxanthin. The samples ranged from 0.20 to 4.34 g per g fish. A PLSR model was calibrated to predict astaxanthin concentration from novel images, and showed good results with a RMSEP of 0.27. For comparison a similar model were built for normal color images, which yielded a RMSEP of 0.45. The acquisition speed of the multispectral imaging system and the accuracy of the PLSR model obtained suggest this method as a promising technique for rapid in-line estimation of astaxanthin concentration in rainbow trout fillets.

Show MeSH