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Sensors 2011, 11(6), 6317-6327; doi:10.3390/s110606317

Relation of Biospeckle Activity with Quality Attributes of Apples

Institute of Agrophysics, Polish Academy of Sciences, Doswiadczalna 4, Lublin 20-290, Poland
Author to whom correspondence should be addressed.
Received: 27 April 2011 / Revised: 7 June 2011 / Accepted: 8 June 2011 / Published: 14 June 2011
(This article belongs to the Special Issue Sensors in Agriculture and Forestry)
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Biospeckle is nondestructive optical technique based on the analysis of variations of laser light scattered from biological samples. Biospeckle activity reflects the state of the investigated object. In this study the relation of biospeckle activity (BA) with firmness, soluble solids content (SSC), titratable acidity (TA) and starch content (SC) during the shelf life of seven apple cultivars was studied. The results showed that the quality attributes change significantly during storage. Significant and pronounced positive correlation between BA and SC was found. This result shows that degradation of starch granules, which could be stimulated to vibration by intracellular cyclosis, causes a lesser number of laser light scattering centers and results in smaller apparent biospeckle activity.
Keywords: biospeckle; firmness; soluble solids content; titratable acidity; apple; starch; nondestructive biospeckle; firmness; soluble solids content; titratable acidity; apple; starch; nondestructive

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Zdunek, A.; Cybulska, J. Relation of Biospeckle Activity with Quality Attributes of Apples. Sensors 2011, 11, 6317-6327.

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