Determination of Fruit and Vegetable Properties by Ultrasonic Excitation

Mizrach, A.; Galili, N.; Rosenhouse, G.

doi:10.13031/2013.31262

Cited by 67 publications

(38 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ultrasounds cannot penétrate deeply into the pulp of most fruits due to the porous nature of the tissue, yet some promising results were obtained by using low-frequency ultrasounds. 4 Nuclear magnetic resonance appears promising in terms of specificity and spatial resolution, 5 but is not suitable for in-the-field or mass applications.…”

Section: Introductionmentioning

confidence: 99%

Time-Resolved Reflectance Spectroscopy Applied to the Nondestructive Monitoring of the Internal Optical Properties in Apples

et al. 2001

View full text Add to dashboard Cite

Time-resolved reflectance has been used for the nondestructive measurement of optical properties in apples. The technique is based on the detection of the temporal dispersión of a short láser pulse injected into the probed médium. The time distribution of re-emitted photons interpreted with a solution of the diffusion equation yields the mean valúes of the absorption and reduced scattering coefficients of the médium. The proposed technique proved useful for the measurement of the absorption and scattering spectra of different varieties of apples, revealing the spectral shape of chlorophyll. No major variations were observed in the experimental data when the fruit was peeled, showing that the optical properties measured were those of the pulp. With this technique the change in chlorophyll absorption during storage and ripening could be followed. Finally, a compact prototype working at few selected wavelengths was designed and constructed, demonstrating potentialities of the technique for industrial applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Time-Resolved Reflectance Spectroscopy Applied to the Nondestructive Monitoring of the Internal Optical Properties in Apples

et al. 2001

View full text Add to dashboard Cite

show abstract

“…In parallel, a built-in peak detector and microprocessor-controlled serial interface captured the signal amplitude and the transit time, and sent a digitized read-out to an external microcomputer. The stored data were used to determine the wave attenuation and calculate the fruit attenuation coefficient as described by Mizrach et al (1989).…”

Section: Methodsmentioning

confidence: 99%

“…A non-destructive method for the determination of avocado maturity would be of considerable economic interest for the avocado industry. Mizrach et al (1989) evaluated the use of high-power, low-frequency ultrasonic excitation for determination of fruit tissue properties, and suggested the application of this technique to the non-destructive quality evaluation of fruits and vegetables. An experimental system was designed for determination of the basic acoustic properties of some fruits and vegetables, i.e.…”

Section: Introductionmentioning

confidence: 99%

Determination of avocado maturity by ultrasonic attenuation measurements

Mizrach

Flitsanov

El-Batsri

et al. 1999

Scientia Horticulturae

View full text Add to dashboard Cite

A non-destructive ultrasonic method was evaluated for the determination of avocado (Persea americana Mill.) maturity. Fruit of`Ettinger' and`Fuerte' avocado cultivars were sampled from tagged trees in the orchard throughout the fruiting season on six and five dates, respectively. Each fruit was subjected to ultrasonic measurements in which ultrasonic mechanical waves were excited in the avocado flesh, enabling the attenuation of waves to be calculated. The dry weight (DW) content of fruit was assessed for the determination of avocado maturity. The changes in attenuation of the ultrasonic signal and those in DW content, during the fruiting season, were functions of time in opposite tendencies: a monotonic decrease in attenuation and a monotonic increase in the DW content. The two cultivars yielded similar tendencies for attenuation and DW content. The relationship between attenuation and DW content suggested that the degree of avocado maturity can be determined by ultrasonic non-destructive technology. #

show abstract

“…Los ultrasonidos de señal se han utilizado para medir diferentes parámetros de calidad en frutas (Mizrach et al, 1994;Mizrach et al, 2003;Mizrach, 2004;Camarena y Martínez-Mora, 2006). En sistemas multicomponentes, conociendo la velocidad ultrasónica en cada componente y la velocidad global en el sistema a varias temperaturas se puede estimar su composición.…”

Section: Entre Las Aplicaciones De Los Ultrasonidos De Señal En Tecnounclassified

Contribución al estudio de la aplicación de ultrasonidos de potencia en el secado convectivo de alimentos

Pérez¹,

Vicente²

View full text Add to dashboard Cite

Determination of Fruit and Vegetable Properties by Ultrasonic Excitation

Cited by 67 publications

References 0 publications

Time-Resolved Reflectance Spectroscopy Applied to the Nondestructive Monitoring of the Internal Optical Properties in Apples

Time-Resolved Reflectance Spectroscopy Applied to the Nondestructive Monitoring of the Internal Optical Properties in Apples

Determination of avocado maturity by ultrasonic attenuation measurements

Contribución al estudio de la aplicación de ultrasonidos de potencia en el secado convectivo de alimentos

Contact Info

Product

Resources

About