Internal bruising prediction in watermelon compression using nonlinear models

Sadrnia, Hassan; Rajabipour, Ali; Jafari, Ahmad; Javadi, Arzhang; Mostofi, Younes; Kafashan, Jalal; Dintwa, E.; Baerdemaeker, Josse De

doi:10.1016/j.jfoodeng.2007.10.007

Cited by 54 publications

(25 citation statements)

References 7 publications

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“…Incidentally, from the average of measurements on four samples, we confirmed that the surface-wave velocity on the green rind of watermelon is 90 m s À1 at 800 Hz, a value that is three times larger than that on the flesh. Sadrnia et al (2008) reported the value of Young's modulus of watermelon flesh from a compression test experiment. They obtained values of 0.40-0.54 MPa, depending on the variety.…”

Section: Discussionmentioning

confidence: 99%

“…It has been pointed out, however, that the acoustic impulse signal is sensitive to the angle and location of the impact on the fruit surface. Furthermore, the elasticity modulus of external rind is larger than that of internal flesh by one order of magnitude (Sadrnia et al, 2008), which is a hindrance to determining the mechanical properties of the flesh.…”

Section: Introductionmentioning

confidence: 99%

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Firmness evaluation of watermelon flesh by using surface elastic waves

Ikeda

Choi

Ishii

et al. 2015

Journal of Food Engineering

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a b s t r a c tWe measured the velocity of surface elastic waves on watermelon flesh for firmness evaluation. The Rayleigh waves at frequencies ranging from 800 to 2400 Hz propagate on the flesh and are detected by a piezo-bimorph sensor in contact with the flesh. We determined the shear elasticity from the velocity for two types of Japanese watermelons, Matsuribayashi777 and Wasenissho, to be 1.18 and 0.74 MPa, respectively. These correlated well with a sensory firmness evaluation. The values of Young modulus obtained by the surface-wave measurements were nine times larger than those by the compression tests performed, which can be explained by the differences in measurement displacement and frequency. We also investigated the effect of storage on the surface-wave velocity for Matsuribayashi777. The velocity decreased by about 10% after ten days of storage. The present results suggest that this technique can be applied to estimating the elastic properties of various fruits.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Firmness evaluation of watermelon flesh by using surface elastic waves

Ikeda

Choi

Ishii

et al. 2015

Journal of Food Engineering

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“…The mechanical simulation of fruits with a multiscale geometrical model linking the macroscopic (whole fruit) scale through the mesoscopic (tissue) scale to the microscopic (cellular) scale (Fratzl ; Aizenberg and others ) would be scientifically and commercially valuable in understanding how external mechanical damage to fruit causes internal cellular damage and other changes that lead to bruising. There are some kinds of fruits such as apple (Dintwa and others ), watermelon (Sadrnia and others ), and tomato (Li and others , ) for which multitissue geometrical models have been developed to simulate the complex impact and compression mechanical behavior. More realistic fruit models would be more accurate in simulations using finite element analysis, but they would take a long time to compute, maybe even unachievable within the limits of existing computing power (Li and others ).…”

Section: Applications Of Compression and Impact Mechanics In The Agromentioning

confidence: 99%

“…Therefore, the von Mises failure criterion is always used in finite element analysis to predict mechanical damage behavior of different types of fruits, tissues, or cells. Examples are sunflower fruits (Hernandez and Belles ), watermelon (Sadrnia and others ), apple (Celik and others ), and tomato (Li and others ).…”

Section: Rheological Characteristics Of Fruit Materialsmentioning

confidence: 99%

Mechanical Models of Compression and Impact on Fresh Fruits

Miao

Andrews

2017

Comp Rev Food Sci Food Safe

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Well-designed and well-operated postharvest mechanical handling processes are vital if fresh fruits are to enter markets with minimal damage. The susceptibility of fruit to quality loss during handling is largely determined by mechanical contact and damage. This article reviews current understanding concerning the effect of impact and other mechanical contacts on fruits. It also discusses the major mechanical models that represent the interaction between fruits or a fruit and a surface. In total, 25 mechanical models associated with compression and impact behaviors of fresh fruits, mainly characterizing such behavior between 2 deformable spherical bodies and between a deformable spherical body and a rigid plate are reviewed. Finally, possible future research directions are discussed. The main challenge in fruit handling is to recognize and prevent microscopic damage to fruits, especially internal tissue/cell damage and microcracks resulting from multiple/repetitive impacts and compressions.

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“…Long-term static force concentrated on a small area of apple surface, as well as hit against another fruit or element, results mostly in permanent deformation of the apples [1,2] . Hyde [3] , Kabas [4] , Komarnicki, et al [5] , and Thompson [6] conducted studies, consisting in assessing of mechanical damage including agricultural products, especially apples, tomatoes, and peaches.…”

Section: Introductionmentioning

confidence: 99%

Modeling of carrot root radial press process for different shapes of loading elements using the finite element method

Stopa

Komarnicki

Szyjewicz

et al. 2017

International Journal of Food Properties

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Biological material is exposed to different type loads during the harvesting, sorting, and transport. The contact with the hard element of the box or the harvester causes damage to the internal structure. Long-term static loads and hitting by another carrot root are the most common type of mechanical damage occurring in the post-harvest process. Because of the characteristic shape of agricultural products, compression force focused on a small area. The main purpose of this study was to determine the discrete model of carrot root as well as to verify it based on the displacement distribution.For determining an experimental model, the collected data were statistically processed. To verify the obtained model, the COSMOS/M software was applied. As a result of this study, a calculation model was presented, which allowed the assessment of surface pressures on the carrot root area, which occurred during the contact with different shaped elements in selected phases of technology process. ARTICLE HISTORY

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Internal bruising prediction in watermelon compression using nonlinear models

Cited by 54 publications

References 7 publications

Firmness evaluation of watermelon flesh by using surface elastic waves

Firmness evaluation of watermelon flesh by using surface elastic waves

Mechanical Models of Compression and Impact on Fresh Fruits

Modeling of carrot root radial press process for different shapes of loading elements using the finite element method

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