Effects of Gas Concentrations and Temperature on O2 Consumption of Strawberries

Talasila, P. Chowdary; Chau, Kenneth J.; Brecht, Jeffrey K.

doi:10.13031/2013.28591

Cited by 43 publications

(31 citation statements)

References 5 publications

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“…The effect of CO 2 level on R O2 and R CO2 was found more pronounced at higher level of O 2 concentration. These results are in close agreement with those obtained by Talasila et al (1992). Overall, at all the reference temperatures, R O2 decreased by decreasing the O 2 and increasing the CO 2 levels and this effect was more significant for low O 2 concentration and higher temperatures.…”

Section: Results and Discussion Respiration Rate At Transient State Osupporting

confidence: 91%

Development and evaluation of Modified Atmosphere (MA) packages<br>employing lamination technique for Royal Delicious apple

Mangarajbr

Goswamibr

Giribr

et al. 2013

Emir. J. Food Agric

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Modified atmosphere (MA) packages were prepared for Royal Delicious apple with an aim to achieve the optimum storage atmosphere within the packages in minimum possible time. Apples were harvested at their commercial maturity and respirtion rate of the fruits was measured at temperatures between 0 -25°C. On the basis of preliminary investigations, air composition with 3% O 2 and 3% CO 2 was found appropriate for MA packaging of apple. The MA package was finalized with a size of 24 cm x 19 cm for 1 kg fill-weight of apples. As the gas transmission rates of individual polymeric films could not match the gas transmission requirements of MAP, judicious combinations of the films were made to bring gas transmission characteristics close to the required values. The equilibrium concentrations of O 2 and CO 2 were established within 36-72 h under different storage temperatures. The mathematical model, developed applying enzymatic kinetics based respiration equation coupled with the Arrhenius model, effectively predicted the equilibrium time and the levels of O 2 and CO 2 at equilibrium. MA packages were evaluated through assessment of different quality parameters of apple during storage and were found to increase its shelf life by 125-210% that of unpacked fruits at different storage temperatures.

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Section: Results and Discussion Respiration Rate At Transient State Osupporting

confidence: 91%

Development and evaluation of Modified Atmosphere (MA) packages<br>employing lamination technique for Royal Delicious apple

Mangarajbr

Goswamibr

Giribr

et al. 2013

Emir. J. Food Agric

View full text Add to dashboard Cite

show abstract

“…2). These results are in close agreement with those obtained by Talasila et al (1992), Mangaraj and Goswami (2011a).…”

Section: Respiration Of Fruits For Transient State Of Mapsupporting

confidence: 93%

Design and development of modified atmosphere packaging system for guava (cv. Baruipur)

2012

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Modified atmosphere packaging (MAP) is a dynamic system during which respiration and permeation occur simultaneously. Hence factors affecting both respiration and permeation were considered for designing a package. In the design of MA packages for guava (cv. Baruipur) a total of 13 variables were considered. The independent variables includes: weight of fruits, surface area of packaging film, free volume of the package, thickness of the film and permeabilities of film to O 2 and CO 2 gas. The fixed variables considered were: the surrounding gas composition and temperature, the respiration rates for O 2 consumption and CO 2 evolution, and the equilibrium gas compositions to be attained in the package so that the fruit's shelf-life is extended. Two types of MA packages, having package size of 19 cm× 19 cm for a fill weight of 1,000±100 g were developed. Packages were designed to accommodate a fill weight range of 0.90-1.10 kg. Various package parameters were optimized to facilitate establishment of dynamic equilibrium at target levels of O 2 and CO 2 concentration in the package. The storage study of MA packages was performed at 10, 15, 20 and 25°C temperatures. The performance of film packages was evaluated for their ability to establish equilibrium at target levels and to extend the shelf life of the packaged fruit. The MA packaging system increased the shelf life of guava by 128-200 % compared to the unpacked fruits at various storage temperatures with a quality comparable with the freshly harvested commodity.

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“…Para determinação da atividade respiratória (produção de CO 2 ), a entrada e a saída das misturas de atmosfera nos frascos de vidro foram seladas por duas horas. A primeira amostra da composição da mistura do frasco de vidro foi feita logo após o fechamento das conexões, e a outra amostra foi feita após duas horas, para calcular a atividade respiratória conforme descrito em Talasila et al (1992).…”

Section: Methodsunclassified

Respiração e produção de etanol e de etileno em mangas armazenadas sob diferentes concentrações de dióxido de carbono e oxigênio

Bender

Brecht

2000

Pesq. agropec. bras.

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RESUMO -O objetivo deste trabalho foi avaliar a respiração e produção de etanol e etileno em mangas armazenadas sob reduzidas concentrações de oxigênio (O 2 ) e elevadas concentrações de dióxido de carbono (CO 2 ). Mangas pré-climatéricas das cultivares Kent e Tommy Atkins foram armazenadas, sob fluxo contínuo, por 14 ou 21 dias, a 12°C em três concentrações de O 2 : 3%, 5% ou 21% em mistura com concentrações de 5%, 15%, 25%, 35%, 45%, 50% ou 70% de CO 2 . O tratamento-testemunha constou de armazenagem em ar sob fluxo contínuo. Após o período em atmosfera controlada (AC), as mangas foram transferidas e mantidas por 5 dias em ar a 20 o C. Mangas sob concentrações de 50% e 70% de CO 2 produziram mais etanol que nas demais concentrações de CO 2 . A redução para 3% de O 2 na atmosfera de armazenagem aparentemente não teve efeito adicional ao CO 2 na produção de etanol. A atividade respiratória de mangas em AC com CO 2 acima de 45% foi muito mais intensa do que a respiração sob as concentrações de CO 2 mais baixas; a produção de etileno, no entanto, esteve suprimida, e, mesmo após a transferência para ar, não se recuperou, permanecendo inferior aos demais tratamentos. A queda na atividade respiratória das mangas armazenadas a 50% e 70% de CO 2 , quando foram transferidas para ar a 20 o C indica que as elevadas concentrações de CO 2 causaram dano irreparável aos tecidos.Termos para indexação: Mangifera indica, cultivar Kent, cultivar Tommy Atkins, armazenagem em atmosfera controlada, anaerobiose. RESPIRATION RATES AND ETHANOL AND ETHYLENE PRODUCTION OF MANGOES STORED UNDER ELEVATED CARBON DIOXIDE AND REDUCED OXIGEN ATMOSPHERESABSTRACT -The objective of this work was to evaluate respiration rates and ethanol and ethylene production of mangoes stored in controlled atmosphere (CA) with reduced O 2 and elevated CO 2 concentrations. Pre-climacteric Kent and Tommy Atkins mangoes were stored for 14 or 21 days at 12°C in 5%, 15%, 25%, 35%, 45%, 50% or 70% CO 2 plus either 21%, 5% or 3% O 2 in a flow through CA system at 12°C. In the control treatment fruits were stored in air at the same temperature and also in the flow through system. After the CA storage the mangoes were transferred and kept for 5 days in air at 20 o C. Mangoes stored in either 50% or 70% CO 2 had the highest ethanol production rates. The reduction to 3% of the O 2 concentration in the storage atmosphere does not seem to have an additional effect on ethanol production. Respiratory rates of mangoes in CA above 45% CO 2 atmospheres were higher than in the other treatments, while ethylene production rates were the lowest values. After transfer to air at 20 o C, respiration rates of mangoes from these treatments dropped significantly below control levels, which, associated with lower rates of ethylene production, indicate that the mangoes had been damaged by the elevated CO 2 atmospheres.

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Effects of Gas Concentrations and Temperature on O2 Consumption of Strawberries

Cited by 43 publications

References 5 publications

Development and evaluation of Modified Atmosphere (MA) packages<br>employing lamination technique for Royal Delicious apple

Development and evaluation of Modified Atmosphere (MA) packages<br>employing lamination technique for Royal Delicious apple

Design and development of modified atmosphere packaging system for guava (cv. Baruipur)

Respiração e produção de etanol e de etileno em mangas armazenadas sob diferentes concentrações de dióxido de carbono e oxigênio

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