Acoustic Testing of Avocado for Fruit Ripeness Evaluation

Galili, N.; Shmulevich, I.; Benichou, N.

doi:10.13031/2013.17164

Cited by 53 publications

(36 citation statements)

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“…Another method which also injures the sample either partially visible or invisible is use of mechanical methods comprising dynamic force-deformation, impact and sonic principle. Firmness of apples and other fresh fruits using these principles have been determined (Galili et al 1998, Ozer et al 1998, Stone et al 1998, Sugiyama et al 1998, McGlone et al 1999, Zude et al 2006, Peng and Lu 2007. These mechanical methods differ in the instrumentation setup and the properties measured and their correlation with destructive measurement techniques.…”

Section: Measurement Of Various Quality Parameters Of Mangomentioning

confidence: 99%

Quality parameters of mango and potential of non-destructive techniques for their measurement — a review

et al. 2010

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The king of fruits "Mango" (Mangifera indica L.) is very nutritious and rich in carotenes. India produces about 50% of the total world's mango. Many researchers have reported the maturity indices and quality parameters for determination of harvesting time and eating quality. The methods currently used for determination of quality of mango are mostly based on the biochemical analysis, which leads to destruction of the fruits. Numerous works are being carried out to explore some non-destructive methods such as Near Infrared (NIR), Nuclear Magnetic Resonance (NMR), X-ray and Computed Tomography (CT), electronic nose, machine vision and ultrasound for quality determination of fruits. This paper deals with some recent work reported on quality parameters, harvesting and post-harvest treatments in relation to quality of mango fruits and reviews on some of the potential non-destructive techniques that can be explored for quality determination of mango cultivars.

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Section: Measurement Of Various Quality Parameters Of Mangomentioning

confidence: 99%

Quality parameters of mango and potential of non-destructive techniques for their measurement — a review

et al. 2010

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“…Frequently removing samples of fruit and performing penetrometer tests is a means of doing this, but it is a destructive technique that does not allow continuous monitoring, and there is a great need for a nondestructive method. Various researchers have suggested diverse nondestructive methods for maturity and firmness evaluation of avocado fruit: nuclear magnetic resonance (NMR) methods (Chen et al, 1993), applying vibrations to one side of the fruit, while measuring the transmitted vibration energy on its other side (Peleg et al, 1990), acoustic testing based on mechanical impulse excitation and flexible piezoelectric sensors (commercially available as Firmalon) (Galili et al, 1998); near infrared spectroscopy (Schmilovitch et al, 1997); ultrasonic excitation , etc. None of these studies included measurements at various storage temperatures.…”

Section: Introductionmentioning

confidence: 99%

Measurement of avocado softening at various temperatures using ultrasound

Flitsanov

Mizrach

Liberzon

et al. 2000

Postharvest Biology and Technology

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The low-temperature storage of avocado affects its subsequent softening process and shelf life. One of the main indices of ripeness in avocado fruit is firmness, which changes during the ripening and softening process. The temperature and duration of storage fundamentally influence the firmness of the stored fruit, and monitoring the softening of fruit enables us to regulate its shelf life. The objective of the present study was to use nondestructive ultrasonic tests to elucidate the influences of storage temperature and time on the softening process of avocado fruit. The attenuation of the ultrasonic waves transmitted through the fruit tissue changes as the fruit passes through the various softening stages during and after low-temperature storage. Four groups of avocados, each stored at a different low temperature, and a control group which was stored at room temperature (20°C) were examined during and after their designated storage times, until they reached full ripeness at room temperature. Nondestructive ultrasonic tests and destructive penetration measurements were carried out in order to determine the attenuation and the tissue firmness, respectively, of the avocados. Statistical analysis showed quite good correlation between the firmness and the ultrasonic attenuation, and their dependence on previous storage time-temperature history. This suggests that the ultrasonic measurements could be used as a nondestructive method of monitoring avocado ripeness during low-temperature storage.

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“…The samples were mechanically excited by an impulse force. Galili et al (1998) used a similar measurement system to measure the firmness of 'Fuerte' avocados. Their results showed that the firmness index determined by f 1 2 m 2/3 (where f 1 is the fundamental natural frequency) decreased with storage time.…”

Section: ) Nondestructive Deformation Methodsmentioning

confidence: 99%

Evaluation of the Internal Quality of Agricultural Products using Acoustic Vibration Techniques

Taniwaki

Sakurai

2010

J. Japan. Soc. Hort. Sci.

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Evaluation of the quality of agricultural products is important because this is the basis for consumer purchases. Consumers may evaluate products on the basis of factors such as fragrance, appearance, and hardness. Texture is one of the most important factors, especially as an indication of freshness. For agricultural products that ripen after harvest, the degree of ripeness is an important factor for optimum edibility. Ripeness evaluation ideally needs to be nondestructive. Various methods have been proposed to evaluate food texture and the nondestructive evaluation of fruit ripeness. This paper reviews such methods and recent developments, focusing on those that use acoustic vibration techniques.

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Acoustic Testing of Avocado for Fruit Ripeness Evaluation

Cited by 53 publications

References 0 publications

Quality parameters of mango and potential of non-destructive techniques for their measurement — a review

Quality parameters of mango and potential of non-destructive techniques for their measurement — a review

Measurement of avocado softening at various temperatures using ultrasound

Evaluation of the Internal Quality of Agricultural Products using Acoustic Vibration Techniques

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