Optical absorption and scattering phenomena in 'Jubileum' plums in relation to their colour properties

S. Jacob, E. Vangdal, A. Torricelli, L. Spinelli, M. Vanoli, P. Eccher Zerbini, L. M M Tijskens, E. Madieta

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

Absorption and scattering of laser light pulse passing through the fruit determine among others, the optical properties of the product. Efforts have been made in the recent past to utilize innovative techniques such as time-resolved reflectance spectroscopy (TRS) to study the quality aspects of different fruit such as nectarines. These optical properties have been well related to firmness, sugars, acids and other quality attributes. TRS measurements were performed on 'Jubileum' plums at two different wavelengths: 670 nm and 758 nm. The fruit were harvested in Norway and brought to Italy under protected conditions. After sorting the fruit by size, TRS measurements were made and the fruit were randomized for different examinations of quality aspects. It was observed that the absorption coefficient (μa) increased for both wavelengths as ripening progressed towards the melting stage of the fruit. The μa values at 670 nm were higher than those at 758 nm. The higher rate in the μa was distinguishable from the third day onwards as the fruit ripened. Similarly, it was interesting to note that the internal colour measured after destructing the fruit related well with the TRS absorption coefficient (μa), i.e., a decrease in the CIE L* (towards darker region) and b* (towards blue) value along with an increase in a* (towards red) from third day of storage.

Original languageEnglish
Title of host publicationActa Horticulturae
Pages381-386
Number of pages6
Publication statusPublished - 31-03-2010
Externally publishedYes

Publication series

NameActa Horticulturae
Volume858
ISSN (Print)0567-7572

Fingerprint

plums
fruits
color
optical properties
wavelengths
nectarines
sugar acids
melting
sorting
lasers
Norway
firmness
ripening
Italy
reflectance spectroscopy

All Science Journal Classification (ASJC) codes

  • Horticulture

Cite this

Jacob, S., Vangdal, E., Torricelli, A., Spinelli, L., Vanoli, M., Eccher Zerbini, P., ... Madieta, E. (2010). Optical absorption and scattering phenomena in 'Jubileum' plums in relation to their colour properties. In Acta Horticulturae (pp. 381-386). (Acta Horticulturae; Vol. 858).
Jacob, S. ; Vangdal, E. ; Torricelli, A. ; Spinelli, L. ; Vanoli, M. ; Eccher Zerbini, P. ; Tijskens, L. M M ; Madieta, E. / Optical absorption and scattering phenomena in 'Jubileum' plums in relation to their colour properties. Acta Horticulturae. 2010. pp. 381-386 (Acta Horticulturae).
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abstract = "Absorption and scattering of laser light pulse passing through the fruit determine among others, the optical properties of the product. Efforts have been made in the recent past to utilize innovative techniques such as time-resolved reflectance spectroscopy (TRS) to study the quality aspects of different fruit such as nectarines. These optical properties have been well related to firmness, sugars, acids and other quality attributes. TRS measurements were performed on 'Jubileum' plums at two different wavelengths: 670 nm and 758 nm. The fruit were harvested in Norway and brought to Italy under protected conditions. After sorting the fruit by size, TRS measurements were made and the fruit were randomized for different examinations of quality aspects. It was observed that the absorption coefficient (μa) increased for both wavelengths as ripening progressed towards the melting stage of the fruit. The μa values at 670 nm were higher than those at 758 nm. The higher rate in the μa was distinguishable from the third day onwards as the fruit ripened. Similarly, it was interesting to note that the internal colour measured after destructing the fruit related well with the TRS absorption coefficient (μa), i.e., a decrease in the CIE L* (towards darker region) and b* (towards blue) value along with an increase in a* (towards red) from third day of storage.",
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Jacob, S, Vangdal, E, Torricelli, A, Spinelli, L, Vanoli, M, Eccher Zerbini, P, Tijskens, LMM & Madieta, E 2010, Optical absorption and scattering phenomena in 'Jubileum' plums in relation to their colour properties. in Acta Horticulturae. Acta Horticulturae, vol. 858, pp. 381-386.

Optical absorption and scattering phenomena in 'Jubileum' plums in relation to their colour properties. / Jacob, S.; Vangdal, E.; Torricelli, A.; Spinelli, L.; Vanoli, M.; Eccher Zerbini, P.; Tijskens, L. M M; Madieta, E.

Acta Horticulturae. 2010. p. 381-386 (Acta Horticulturae; Vol. 858).

Research output: Chapter in Book/Report/Conference proceedingChapter

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AU - Torricelli, A.

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Jacob S, Vangdal E, Torricelli A, Spinelli L, Vanoli M, Eccher Zerbini P et al. Optical absorption and scattering phenomena in 'Jubileum' plums in relation to their colour properties. In Acta Horticulturae. 2010. p. 381-386. (Acta Horticulturae).