title: Detection of Golden apples' climacteric peak by laser biospeckle measurements.
abstract: In this paper, we report a study in which a laser biospeckle technique is used to detect the climacteric peak indicating the optimal ripeness of fruits. We monitor two batches of harvested Golden apples going through the ripening phase in low- and room-temperature environments, determine speckle parameters, and measure the emitted ethylene concentration using gas chromatography as reference method. Speckle results are then correlated to the emitted ethylene concentration by a principal component analysis. From a practical point of view, this approach allows us to validate biospeckle as a noninvasive and alternative method to respiration rate and ethylene production for climacteric peak detection as a ripening index.
authors.forename: Rana
authors.initials: R
authors.lastname: Nassif
authors.forename: Christelle Abou
authors.initials: CA
authors.lastname: Nader
authors.forename: Charbel
authors.initials: C
authors.lastname: Afif
authors.forename: Fabrice
authors.initials: F
authors.lastname: Pellen
authors.forename: Guy
authors.initials: G
authors.lastname: Le Brun
authors.forename: Bernard
authors.initials: B
authors.lastname: Le Jeune
authors.forename: Marie
authors.initials: M
authors.lastname: Abboud
mesh_terms: D000383:Agriculture / Q000295:instrumentation; D000465:Algorithms; D015415:Biomarkers / Q000032:analysis; D002979:Climacteric / Q000502:physiology*; D004784:Environmental Monitoring / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005030:Ethylenes / Q000032:analysis*; D005504:Food Analysis / Q000295:instrumentation; D007834:Lasers; D027845:Malus / Q000737:chemistry* / Q000502:physiology*; D010783:Photometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D015415:Biomarkers; D005030:Ethylenes; C036216:ethylene