Laser speckle techniques in quality evaluation of orange fruits

Rabelo, Giovanni Francisco; Braga, Roberto A.; Fabbro, Inácio Maria Dal

doi:10.1590/s1415-43662005000400021

Cited by 46 publications

(24 citation statements)

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“…Non-invasive methods are used to classify agricultural products of different varieties, such as those presented by Rabelo et al (2005), Lorente et al (2012) and El Kalhed et al (2016). The optical technique known as biospeckle laser has been widely employed in studies on food quality (Rabal & Braga, 2008;Chargot et al, 2012;Retheesh et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Relationship between biospeckle laser technique and firmness of Acrocomia aculeata fruits

Costa

Pinto

Braga

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TKnowing the maturation of the Acrocomia aculeata (macaw palm) fruit is decisive for harvest to be performed when the fruit has a higher content and quality of oil. There are different approaches to monitor maturation and they can be classified as destructive and non-destructive. Variables obtained by optical instruments have been used to determine maturation stage. The present study evaluated the relationship between the biological activity measured by the optical technique of biospeckle laser and firmness, measured in the Acrocomia aculeata fruit pulp between the 41 st and 61 st week after flowering. The biological activity was quantified by biospeckle images, while the fruit pulp firmness was determined by digital penetrometer. Correlations between variables were evaluated during maturation and in the senescence of fruits. According to the results, significant correlation between biological activity and firmness was found for both evaluated conditions, demonstrating that biospeckle laser can be an effective non-invasive indicator of Acrocomia aculeate fruit maturation assisting in the determination of the moment of harvest.Relação entre a técnica do biospeckle laser e a firmeza dos frutos de Acrocomia aculeata R E S U M O O conhecimento da maturação dos frutos de Acrocomia aculeata (macaúba) é determinante para que a colheita seja realizada no momento em que o fruto apresente maior quantidade e qualidade de óleo. Existem diversas abordagens para monitorar a maturação, classificadas como destrutivas e não destrutivas. Variáveis obtidas por instrumentos óticos vêm sendo utilizadas para determinar, de forma não destrutiva, o estádio de maturação. Neste trabalho foram avaliadas a relação entre a atividade biológica mensurada pela técnica ótica do biospeckle laser e a firmeza da polpa dos frutos de Acrocomia aculeata entre as 41ª e 61ª semanas de maturação, após a florada. A atividade biológica foi quantificada a partir das imagens do biospeckle enquanto a firmeza da polpa dos frutos foi determinada por um penetrômetro digital. Foram avaliadas as correlações entre as variáveis durante a maturação e na senescência dos frutos. A partir dos resultados foi constatada correlação significativa entre atividade biológica e firmeza para as duas condições avaliadas demonstrando que o biospeckle laser pode ser um indicador eficiente não invasivo da maturação dos frutos da Acrocomia aculeata auxiliando na determinação do momento de colheita.

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Section: Introductionmentioning

confidence: 99%

Relationship between biospeckle laser technique and firmness of Acrocomia aculeata fruits

Costa

Pinto

Braga

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…In agriculture, the breakpoint can be attributed to applications of BSL in fruits (tomatoes), 1975 (Briers, 1975), followed by many other applications in fruits related to maturation stages (Xu;Joenathan;Khorana, 1995;Rabelo et al, 2005;Nirala, 2014;Nassif et al, 2014;Skic et al, 2016;Retheesh et al, 2016;Costa et al, 2017), or even using fruit to test processes and improve the BSL technique (Oulamara;Tribillon;Duvernoy, 1989;Kurenda et al, 2013;Nirala, 2013;Nirala, 2014a;Nirala, 2014b;Mulone et al, 2014;Kurenda et al, 2014;Arefi et al, 2016).…”

Section: Analysis Of Biospeckle Laser Applicationsmentioning

confidence: 99%

When noise became information: State-of-the-art in biospeckle laser

Braga

Alves²

2017

Ciênc. agrotec.

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Laser was presented to science and industry in the 1960s and shortly became a useful tool in many areas, with applications based on its multiple characteristics such as coherence of light, which presents a phenomenon known as interference pattern, or speckle, when beam returns from an illuminated surface. Despite great application of speckle pattern, its residual presence, for example, in interferometric approaches was considered as a noise, demanding filtering. However, grains themselves became information as their dynamic changes in time started to be linked to biological sample activity. Dynamic laser speckle has been since then a phenomenon widely used to monitor biological activities in many areas from agriculture to medicine. It is known as biospeckle laser (BSL) when adopted in biological material, with high sensitivity to follow very tiny movements in biological tissues, linked to changes in speckle provided by scatterer activities inside and outside cells. Since the 1970s, biospeckle laser usage follows a crescent technologic spiral where technological developments opened room for new applications, while new demands regarding biological monitoring forced the development of new methodologies. Therefore, potential adoption of the phenomenon as a sensor, for instance, in agricultural and medical processes, as well as constant offer of new devices provided new turns in the BSL technologic spiral and opened room for technique improvement. In this study, I present a short history of biospeckle laser (BSL) with applications and development associated with challenges regarding its usage in portable and accessible devices or even in commercial equipment. And the history was packed in a temporal diagram identifying the breakpoints responsible for improvements in the use of the technique.Index terms: Optical metrology; biosystems; challenges. RESUMOO laser foi apresentado à ciência e à indústria em 1960, e rapidamente tornou-se uma ferramenta útil à muitas áreas do conhecimento, que fazem uso de suas múltiplas características, como é o caso da coerência da luz, que é responsável pelo fenômeno conhecido como padrão de interferência, ou speckle; este padrão de interferência ocorre quando a luz retorna do material iluminado formando uma figura de interferência para o observador. Apesar da grande aplicação, a presença residual do padrão de speckle em abordagens interferométricas apresentavase como um ruído que demanda filtragem. Apesar da dificuldade em alguns casos, os grãos de speckle tornaram-se fonte de informação em situações dinâmicas, quando suas mudanças começaram a ser relacionadas à atividade do material biológico iluminado. Speckle laser dinâmico tornou-se o termo usado para denominar o fenômeno que passou a ser usado para monitorar a atividade biológica e não biológica em aplicações desde a agricultura até aquelas relacionadas à medicina. Este fenômeno também é conhecido como biospeckle laser (BSL), quando aplicado em material biológico, e com grande sensibilidade para seguir os menores movimentos ...

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“…Ces ré-sultats ont montré que les attributs de qualité évoluent de façon significative au cours du stockage. D'autres études [3], quantifiant la variation du moment d'inertie issu de la matrice de suivi temporel (THSP) extraite des images de speckle, ont été effectuées sur des oranges. Les moments d'inertie mesurés, et montrant une dynamique de speckle qui diminue avec la baisse de qualité des fruits, ont été utilisés comme indicateurs de qualité et de sénescence 1 pour les fruits.…”

Section: Fruits Climactériquesunclassified

Le speckle pour mesurer la maturité des fruits climactériques

Abboud

Brun

2016

Photoniques

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Laser speckle techniques in quality evaluation of orange fruits

Cited by 46 publications

References 2 publications

Relationship between biospeckle laser technique and firmness of Acrocomia aculeata fruits

Relationship between biospeckle laser technique and firmness of Acrocomia aculeata fruits

When noise became information: State-of-the-art in biospeckle laser

Le speckle pour mesurer la maturité des fruits climactériques

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