Qualidade dos frutos de tomate de mesa quando submetidos a impacto por ocasião do beneficiamento

Magalhães, Ana M. de; Ferreira, Marcos D.

doi:10.1590/s0102-05362006000400017

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…Maximum acceleration on a metal surface was four times higher in comparison to rubbery padding. In tomatoes, the highest acceleration was determined by drop heights of 10 or 30 cm on rigid surfaces (MAGALHÃES et al, 2007). During the impact, smooth paddings dissipate the energy creating a bigger contact surface reducing the amount of incident energy on the fruit (GOMILLA, 2007).…”

Section: Resultsmentioning

confidence: 99%

“…After 120 days of storage and as well followed by five days at room temperature, the drop from a height of 6.5 cm onto a rubbery padding resulted in the lowest percentage of noticeable injuries. On tomatoes, an increase of 31 % was observed in internal bruises after the fruit had been submitted to drops of 30 cm onto a metallic surface in comparison to drops from the same height onto a foam-covered surface (MAGALHÃES;FERREIRA, 2006). Occurrence of impacts may not always result in visible bruises on the epidermis, nonetheless the mesocarp will undergo changes in response to the inflicted energy.…”

Section: Resultsmentioning

confidence: 99%

“…After 15 days at 0 ± 0.5 °C plus 90 ± 5 % UR to even out ripening the pears were retrieved from storage and maintained for approximately four hours at 20 ± 2 °C prior to submitting to the impact treatments. Impact treatments were applied using a device connected to a vacuum pump, which provided the fruit adhesion by suction and its fall when the vacuum pump is turned off (MAGALHÃES et al, 2007). The heights were adjusted so that all fruit, independently of its diameter, would drop from exactly the same height.…”

Section: Effects Of Mechanical Injuries By Impacts On Ripening and Qumentioning

confidence: 99%

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Critical points and magnitude of impacts on the packing line: effect on ripening and quality of 'Packham's Triumph' pears

Pasini¹,

Antoniolli

Bender

2017

SCA

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Pears have a very sensitive epidermis and are prone to signal mechanical blemishes, which result in reduced visual quality and low consumer acceptance. The objective of this work was to identify critical points and the magnitude of impact forces on a packing line at a commercial packinghouse. The effect of injuries on ripening and quality of ´Packham´s Triumph´ pears was also evaluated after cold storage. The packing line was scrutinized on its transfer points, fruit drop heights and cushioning overlays, which allowed to acquire the maximum accelerations on each spot. The maximum acceleration forces were reproduced in the lab with ‘Packham’s Triumph’ pears to evaluate the effects on fruit quality after cold storage. Four critical points were noticed on the packing line: at the transfer from the conveyor belt to the lifting rollers, at the transfer from the lifting rollers to the washing ramp with rotatory brushes, at the entrance to the singulator at the end of the conveyor belt and at the drop from the sizer to the packing stalls. Ripening of ‘Packham’s Triumph’ pears invariably came about during cold storage, and independently of the imposed impacts. The impacts under the circumstances of the test did not affect the quality of ´Packham´s Triumph´ pears kept for up to 120 days at cold storage followed by five days at room temperature.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Effects Of Mechanical Injuries By Impacts On Ripening and Qumentioning

confidence: 99%

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Critical points and magnitude of impacts on the packing line: effect on ripening and quality of 'Packham's Triumph' pears

Pasini¹,

Antoniolli

Bender

2017

SCA

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“…Não houve diferença nos valores de pH e nos teores de acidez titulável entre os tratamentos durante o armazenamento. MAGALHÃES & FERREIRA (2006), avaliando tomates submetidos a queda em três diferentes superfícies receptoras e três alturas de queda, não observaram diferença estatística (p> 0,05) para acidez titulável, pH e vitamina C. Por sua vez, DURIGAN et al (2005) observaram para lima ácida, que frutos submetidos a impacto demonstravam, após armazenamento por 9 dias, maior perda de massa e redução significativa nos teores de sólidos solúveis, acidez titulável e ácido ascórbico do que frutos intactos. TABELA 2.…”

Section: Efeito Do Impacto De Queda Nas Qualidades Físico-químicas Dounclassified

Avaliação de linhas de beneficiamento e impactos de queda na qualidade de caqui "Rama Forte"

et al. 2009

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RESUMO:O manuseio inadequado e excessivo de frutas e de hortaliças causa alta incidência de danos físicos e, consequentemente, perdas pós-colheita. O objetivo deste trabalho foi avaliar a magnitude de impacto em linhas de beneficiamento e classificação para caqui "Rama Forte" e determinar, em laboratório, seus limites de impactos. Para a avaliação dos pontos críticos, foi utilizada uma esfera instrumentada de 76 mm de diâmetro (Techmark, Inc., Lansing, EUA), que registrou a magnitude dos impactos em sete equipamentos distintos de quatro unidades de beneficiamento. A determinação de danos físicos foi feita em testes laboratoriais, nos quais a queda dos frutos foi relacionada com a magnitude de impacto, incidência de danos físicos e perdas na qualidade do fruto. Nas linhas de beneficiamento, os valores de impactos encontrados variaram de 21 a 87 G nos pontos de transferência, e a maioria dos impactos registrados (acima de 94%) durante a passagem pela linha foram de valores de até 50 G. Alturas de queda a partir de 20 cm causaram aumento na perda de massa do caqui no sexto dia de armazenamento, em temperatura ambiente. As quedas de 20 e 30 cm causaram maior escurecimento da casca (menores valores de L), associada à redução da intensidade da cor (chroma). O impacto não causou efeito nas características químicas da polpa do fruto. PALAVRAS-CHAVE: Diospyros kaki L., esfera instrumentada, aceleração (G), danos físicos. PACKING LINE EVALUATION FOR DROP IMPACTS ON PERSIMMON QUALITY "RAMA FORTE"ABSTRACT: Excessive and inadequate handling of fruits and vegetables provides high incidences of physical damage, consequently, post harvest losses. The main goal of this work was to evaluate the impact magnitude in persimmon packing lines, "Rama Forte", and to determine, at the laboratory, its impact limits. For evaluating the critical points it was used an instrumented sphere of 76 mm of diameter (Technmark, Inc, Lansing, USA), which registered the impact magnitude in seven distinctive impact lines located in four packing houses. For determining physical damages, tests were carried out at the laboratory, where fruit drop was related to impact magnitude, physical damage incidence and fruit post harvest losses. At the packing lines, the values found varied from 21 to 87 G on the transfer points and the majority of registered impacts (over 94%) were down 50G. Drops from 20 cm caused an increase in weight losses after six days of storage at room temperature. Drops from 20 and 30 cm caused skin darkness (low L values), associated to a decrease in color intensity (chroma). Impact drop did not affect pulp fruit chemical features.

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Avaliação de classificadora de cilindros divergentes para tomate "Carmen"

Atarassi¹,

Ferreira

Braunbeck

et al. 2010

Eng. Agríc.

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RESUMO:As normas de classificação garantem o mesmo padrão para produtores, atacadistas e consumidores finais, facilitando a comercialização, agregando valor ao produto e diminuindo as perdas. O objetivo deste trabalho foi avaliar uma classificadora de tomates in natura por diâmetro, por meio de cilindros rotativos divergentes com diferentes velocidades de rotação. Foram realizados ensaios para avaliar a eficiência da classificação, conformidade da classificação por diâmetro com a norma do PROGRAMA BRASILEIRO PARA A MODERNIZAÇÃO DA HORTICULTURA (2003) e incidência de danos mecânicos em tomates "Carmen". Os cilindros divergentes apresentaram conformidade de mistura na classificação por diâmetro, nas classes 60 e 80. Entretanto, para a classe 70, nenhum tratamento esteve em conformidade com a mistura permitida de 10% de frutos de outras classes. O conjunto de um cilindro liso e outro com helicoide de borracha a 150 rpm obteve a maior eficiência de classificação, com menor perda de massa dos tomates armazenados e atividade respiratória similar aos frutos-controle. PALAVRAS-CHAVE:pós-colheita, classificação, Lycopersicon esculentum Mill, qualidade, atividade respiratória. PERFORMANCE EVALUATION OF DIVERGENT SIZING CYLINDERS EQUIPMENT FOR "CARMEN" TOMATOABSTRACT: Grading standards guarantee consistent quality for growers, wholesalers and consumers, helping the trading, adding value to products and reducing postharvest losses. The main purpose of this study was to evaluate a grading diameter system for fresh market tomatoes in a rotative cylinder equipment in different rotation velocities. Sorting efficiency, based on the standard diameter of THE BRAZILIAN PROGRAM FOR THE HORTICULTURE MODERNIZATION (2003) and mechanical damage incidence for "Carmen" tomatoes were evaluated. The divergent cylinders were in accordance with grade mixing in classes 60 and 80 grading. However, for grade 70 no treatment was in accordance with the mixture percentage allowed, which is 10% of fruit from other classes. The combination of a flat and a helical rubber cylinder, both at 150 rpm, had the highest sorting efficiency, showing low weight loss and respiratory activity rates, values similar to the ones found for control treatments.

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Qualidade dos frutos de tomate de mesa quando submetidos a impacto por ocasião do beneficiamento

Cited by 3 publications

References 3 publications

Critical points and magnitude of impacts on the packing line: effect on ripening and quality of 'Packham's Triumph' pears

Critical points and magnitude of impacts on the packing line: effect on ripening and quality of 'Packham's Triumph' pears

Avaliação de linhas de beneficiamento e impactos de queda na qualidade de caqui "Rama Forte"

Avaliação de classificadora de cilindros divergentes para tomate "Carmen"

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