Changes during the ripening of the very late season Spanish peach cultivar Calanda

Ferrer, Ana Luiza; Remón, Sara; Negueruela, A.I.; Oria, Rosa

doi:10.1016/j.scienta.2005.02.002

Cited by 104 publications

(81 citation statements)

References 26 publications

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“…4b shows the average visible reflectance spectrum (420-690 nm). In the interval between 630 nm and 690 nm, the average spectrum consistently increased with maturity cluster; this result is in accordance with the earlier results such as those reported by Ferrer et al (2005) who also found higher reflectance values in the same range as in more mature peaches.…”

Section: Comparison Of Multispectral Categories With Regard To Referesupporting

confidence: 92%

Multispectral images of peach related to firmness and maturity at harvest

Lleó

Elorza

Ruiz-Altisent

et al. 2009

Journal of Food Engineering

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Keywords:Fruit Multispectral Vision Ripeness Firmness Maturity Non-destructive Quality Visible spectra Chlorophyll Peach Two multispectral maturity classifications for red soft-flesh peaches ('Kingcrest', 'Rubyrich' and 'Richlady' n = 260) are proposed and compared based on R (red) and R/IR (red divided by infrared) images obtained with a three CCD camera (800 nm, 675 nm and 450 nm). R/IR histograms were able to correct the effect of 3D shape on light reflectance and thus more Gaussian histograms were produced than R images. As fruits ripened, the R/IR histograms showed increasing levels of intensity. Reference measurements such as firmness and visible spectra also varied significantly as the fruit ripens, firmness decreased while reflectance at 680 nm increased (chlorophyll absorption peak).

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Section: Comparison Of Multispectral Categories With Regard To Referesupporting

confidence: 92%

Multispectral images of peach related to firmness and maturity at harvest

Lleó

Elorza

Ruiz-Altisent

et al. 2009

Journal of Food Engineering

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“…This behaviour can be explained by the common inclusión of reflectance at 680 nm, the chlorophyll absorption peak, which increased with ripening due to the chlorophyll degradation. This behaviour has been observed by other studies using spectra acquired by a spectroradiometer (Ferrer et al, 2005) and backscattering profiles acquired in narrow bands of the skin in hyperspectral images (Qin and Lu, 2008;Lu and Peng, 2006). The above mentioned authors showed the relationship between ripeness and reflectance/absorbance at 680 nm.…”

Section: Discussionsupporting

confidence: 78%

“…Ruiz-Altisent et al (2006) showed that the reflectance associated with chlorophyll content (i.e., 680 nm) is inversely related to firmness for several yellow-and red-skinned peach cultivars, including 'Richlady'. Ferrer et al (2005) also observed significant differences in the reflectance spectra of Calanda peaches (clingstone, pale-yellowish, and non-melting fleshed cultivars) at 680 nm. Reflectance at 680 nm for chlorophyll content presents the highest correlation with firmness in peaches (Lu and Peng, 2006).…”

Section: State Ofthe Artmentioning

confidence: 75%

Comparison of multispectral indexes extracted from hyperspectral images for the assessment of fruit ripening

Lleó

Roger²,

Herrero-Langreo

et al. 2011

Journal of Food Engineering

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Keywords:Hyperspectral imaging Vision Ripeness Non-destructive assessment Quality PeachThe present research is focused on the application of artificial visión to assess the ripening of red skinned soft-flesh peach ('Richlady'). Artificial visión allows a spatially detailed determination of the ripening stage of the fruit. The considered optical indexes (Indi and Ind2, proposed in the present research, and Ind 3 and I AD , proposed by other authors) are based on the combination of wavelengths cióse to the chlorophyll absorption peak at 680 nm. Ind} corresponds approximately to the depth of the absorption peak, and Ind 2 corresponds to the relative absorption peak. An artificial image of each Índex was obtained by computing the corresponding reflectance images, which were acquired with a hyperspectral camera. All indexes were able to correct convexity (except for the just-harvested peaches and for Ind}). Ind 2 is the preferred Índex; it showed the highest discriminating power between ripening stages and no influence of convexity. Ind 2 also allowed the differentiation of ripening regions within the fruits, and it showed the evolution of those regions during ripening.

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“…De acuerdo con esto, Cascales et al (2005) indican que los duraznos variedad Caterin presentaron un cambio en la firmeza de 65 a 22 Newton (N), de igual manera Ferrer et al (2005) encontraron para duraznos cv. Calanda una disminución lineal de la firmeza con valores de 14 kg cm -2 a 4,5 kg cm -2 durante el periodo de maduración.…”

Section: Cambios En La Firmeza Del Frutounclassified

Fisiología y bioquímica de la maduración del fruto de durazno [<i>Prunus persica</i> (L.) Batsch]. Una Revisión

Africano

Almanza-Merchán

Balaguera-López

2015

Rev. Colomb. Cienc. Hortic.

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RESUMENEl durazno pertenece a la familia Rosaceae; es una drupa muy apetecida por su agradable sabor y cualidades nutricionales, al igual que en la industria de alimentos. Es un fruto climatérico, altamente perecedero con altas tasas respiratorias y de producción de etileno. Durante la maduración presenta pérdida del color verde de la epidermis y adquiere tonalidades rojizas/amarillas, por degradación de clorofilas y biosíntesis de antocianinas y carotenoides; también presenta aumento en el contenido de azúcares solubles, emisión de compuestos voláti-les y actividad antioxidante, disminución en el contenido de ácidos orgánicos, firmeza y almidón. Debido a las características fisiológicas y bioquímicas propias del fruto relacionadas con la alta perecibilidad, se dificultan las labores de manipulación, transporte y comercialización, por lo anterior se realizó la actualización de la fisiología y bioquímica de la maduración del fruto de durazno.

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Changes during the ripening of the very late season Spanish peach cultivar Calanda

Cited by 104 publications

References 26 publications

Multispectral images of peach related to firmness and maturity at harvest

Multispectral images of peach related to firmness and maturity at harvest

Comparison of multispectral indexes extracted from hyperspectral images for the assessment of fruit ripening

Fisiología y bioquímica de la maduración del fruto de durazno [<i>Prunus persica</i> (L.) Batsch]. Una Revisión

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