The use of polyethylene bags and ethylene absorbent to extend the life of kiwifruit (<i>Actinidia chinensis</i>planch) during cool storage

Scott, K. J.; Giugni, J.; Bailey, Wilf Mc.

doi:10.1080/00221589.1984.11515233

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…The ability of potassium permanganate to reduce ethylene concentration in the atmosphere around horticultural produce was fi rst demonstrated by Forsyth et al (1967) on apples. The reduction in ethylene affected by addition of potassium permanganate was subsequently found to delay the ripening of many climacteric fruits such as banana (Scott et al, 1970), kiwifruit (Scott et al, 1984), mango (Esguerra et al, 1978) and avocado (Hatton and Reeder, 1972). Fewer studies have been conducted with non-climacteric produce but potassium permanganate has been found to extend postharvest life by retarding loss of green color and microbial wastage of lemon (Wild et al, 1976) and lettuce and inhibiting rotting of strawberry .…”

mentioning

confidence: 99%

Efficacy of Potassium Permanganate Impregnated into Alumina Beads to Reduce Atmospheric Ethylene

Wills¹,

Warton²

2004

jashs

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A systematic study was conducted on the ability of potassium permanganate absorbent to remove low levels of ethylene from the atmosphere. Absorption of potassium permanganate onto alumina beads by dipping in a saturated solution was maximal at 2 g/100 g after 2 hours at 20 °C and 4 g/100 g after 1 hour at 65 °C. Commercial alumina-based absorbents were found to contain potassium permanganate at 2.7 to 6.0 g/100 g suggesting many are prepared at elevated temperature. Trials in a closed system at 20 °C and 60% to 70% RH with alumina beads containing potassium permanganate at 4 g/100 g showed a logarithmic decrease in ethylene concentration with 90% of the ethylene removed after 2.5 to 3.0 hours. Relative humidity (RH) had a marked inverse effect on ethylene absorption with reactivity at 100% RH calculated to be 15% of that at 0% RH. Performance of potassium permanganate where ethylene was continually generated by a continuous flow of ethylene at 14 μL·h-1 through the container showed a steady state was attained within 1 hour and maintained for 24 hours. Ethylene removal increased linearly with bead weight and ranged from 30% with 1 g to 90% with 50 g. Examination over 20 days showed a continuing decrease in rate of ethylene removal which after 14 days had declined to 10% of incoming ethylene although 44% of the original level of potassium permanganate still remained in the beads. Calculations based on known endogenous ethylene production rates suggest that at 20 °C and 90% RH, use of a potassium permanganate-alumina absorbent would be beneficial with produce having a low level of ethylene generation. Suitability for larger packages of produce generating higher ethylene levels is questionable as >1 kg of absorbent may be required.

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confidence: 99%

Efficacy of Potassium Permanganate Impregnated into Alumina Beads to Reduce Atmospheric Ethylene

Wills¹,

Warton²

2004

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“…Dados estes confirmados por Sarantóupolos & Soler (1989), no qual descreve os efeitos positivos da embalagem quanto à criação de uma barreira de proteção que separa os frutos do contato direto com o meio, preservando assim a integridade física dos mesmos. Os resultados da análise de firmeza de polpa (Figura 3), demonstraram que os frutos submetidos ao tratamento 5 (PEBD de 22 µm), apresentaram uma firmeza de polpa superior aos demais tratamentos, possivelmente pela elevação dos níveis de CO 2 quanto a uma melhor preservação da integridade dos tecidos celulares, dados estes concordantes com McDonald & Harmam (1982); Mitchell et al (1982); Scott et al (1984) no qual observam que a elevação nos níveis de CO 2 , através do uso de filmes plásticos pode, entre outros fatores, reduzir a taxa inicial de perda da firmeza de polpa.…”

Section: Resultsunclassified

Polietileno de baixa densidade (PEBD) na conservação pós-colheita de figos cv. "Roxo de Valinhos"

2002

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Estudou-se o efeito de diferentes embalagens de polietileno em figos cv. "Roxo de Valinhos", sob condições de frigoconservação. Os frutos colhidos no início do estádio de maturação, foram limpos e selecionados, sendo após embalados em filmes plásticos de polietileno de diferentes espessuras, constituindo assim os tratamentos: 1(controle), 2 - PEBD com 6 µm de espessura, 3 - PEBD com 10 µm de espessura, 4 - PEBD com 15 µm de espessura, 5 - PEBD com 22 µm de espessura. Os frutos foram então armazenados em câmara fria com temperatura de -- 0,5 °C e 85-90 % de UR, por oito dias. As análises foram realizadas diariamente, avaliando-se os seguintes parâmetros: perda de massa fresca, aspecto visual, firmeza de polpa, sólidos solúveis totais (SST), acidez total titulável (ATT) e relação SST/ATT. Ao final, verificou-se que os frutos embalados em PEBD de 22 µm apresentaram maior firmeza de polpa, melhor aspecto visual, menores teores de sólidos solúveis totais, maiores níveis de acidez total titulável e menores valores na relação SST/ATT, quando comparados aos demais tratamentos. No parâmetro perda de massa fresca, todos os tratamentos foram estatisticamente superiores ao controle.

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“…The initial studies were on the ambient storage of bananas in sealed polyethylene bags, where Scott et al showed that the inclusion of potassium permanganate delayed ripening to 21 days compared with 14 days in a sealed bag without ethylene absorbent and 7 days for air‐stored bananas. The ability of potassium permanganate to delay ripening has been extended to a range of other climacteric fruits such as avocado, mango and kiwifruit, with beneficial effects also being shown on non‐climacteric produce such as lemons, lettuces and strawberries …”

Section: Methods For Reducing Ethylenementioning

confidence: 99%

“…The initial studies were on the ambient storage of bananas in sealed polyethylene bags, where Scott et al 24 showed that the inclusion of potassium permanganate delayed ripening to 21 days compared with 14 days in a sealed bag without ethylene absorbent and 7 days for air-stored bananas. The ability of potassium permanganate to delay ripening has been extended to a range of other climacteric fruits such as avocado, 25 mango 26 and kiwifruit, 27 with beneficial effects also being shown on non-climacteric produce such as lemons, 28 lettuces 29 and strawberries. 30 Potassium permanganate is commercially available impregnated into various inert substrates from a diverse range of manufacturers in many countries, but the barrier to better commercial uptake would seem to be the lack of definitive studies determining the actual amount of potassium permanganate required to keep ethylene at a sufficiently low concentration to maintain quality in individual produce for the desired market period under specific storage conditions.…”

Section: Absorption/oxidationmentioning

confidence: 99%

Reduction of energy usage in postharvest horticulture through management of ethylene

Wills

Golding

2014

J Sci Food Agric

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Cool chain management is the preferred technology to extend the postharvest life of horticultural produce, but with rising energy costs and community pressure to reduce greenhouse gas emissions, there is a need to use less energy-intensive technologies. Minimising the level of ethylene around horticultural produce inhibits ripening and senescence and therefore has the potential to reduce the use of refrigeration. The long-distance transport of bananas within Australia and from Central America to Europe is used as a case study to show that the need for refrigeration could be reduced if the appropriate concentrations of ethylene were maintained around fruit during transit. Data are also presented to show a similar benefit of ethylene control with green beans, as well as another study showing that apples treated with the ethylene action inhibitor 1-methylcyclopropene could be stored at a higher temperature without loss of quality to the consumer. The range of technologies available to manage ethylene levels is discussed.

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The use of polyethylene bags and ethylene absorbent to extend the life of kiwifruit (Actinidia chinensisplanch) during cool storage

Cited by 10 publications

References 4 publications

Efficacy of Potassium Permanganate Impregnated into Alumina Beads to Reduce Atmospheric Ethylene

Efficacy of Potassium Permanganate Impregnated into Alumina Beads to Reduce Atmospheric Ethylene

Polietileno de baixa densidade (PEBD) na conservação pós-colheita de figos cv. "Roxo de Valinhos"

Reduction of energy usage in postharvest horticulture through management of ethylene

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