Laboratory Evaluation of Potassium Permanganate for Ethylene Removal from CA Apple Storages

Lidster, P. D.; Lawrence, R. A.; Blanpied, G. D.; McRae, K. B.

doi:10.13031/2013.32252

Cited by 14 publications

(10 citation statements)

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“…Previous reports have shown the positive effects of either one these treatments on quality maintenance and shelf life extension of apple fruits (Lidster et al . ; Tatsuki et al . ; Jeziorek et al .…”

Section: Discussionmentioning

confidence: 99%

The Effects of 1-Methylcyclopropen (1-MCP) and Potassium Permanganate Coated Zeolite Nanoparticles on Shelf life Extension and Quality Loss of Golden Delicious Apples

Sardabi

Mohtadinia

Shavakhi

et al. 2013

Journal of Food Processing and Preservation

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Golden Delicious apples were treated with either 1 ppm 1‐methylcyclopropen (1‐MCP) at 25C for 8 h and/or ethylene absorber sachets. Apples left untreated were considered as the control. Apples were stored for 5 months at 0C and 90% relative humidity. Firmness, total soluble solid concentration, titratable acidity (TA), pH and skin color were evaluated on a monthly basis during storage period. Apples treated with 1‐MCP in presence of ethylene absorbing sachets were significantly firmer, greener and had a lower hue angle in comparison with the control apples. Also, using this treatment, TA was reduced less extensively and lower pH values were obtained compared with the control. These results suggest that treatment with 1‐MCP and ethylene absorber sachets is a cost‐effective and safe method to improve the quality maintenance of Golden Delicious apples during cold storage. Practical Applications Apples are one of the most common fruits consumed in many countries. Apples undergo many biochemical changes including ripening, between harvest and consumption resulting in the loss of freshness desirable to consumers. Ethylene has an effective role in apple quality loss. In the present study, the effect of ethylene reduction was investigated on improving the quality of Golden Delicious apples during cold storage. Overall, the results showed that 1‐MCP treatment and potassium permanganate coated zeolite nanoparticles caused a noticeable delay in apple ripening compared with control fruits which leads to quality maintenance.

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Section: Discussionmentioning

confidence: 99%

The Effects of 1-Methylcyclopropen (1-MCP) and Potassium Permanganate Coated Zeolite Nanoparticles on Shelf life Extension and Quality Loss of Golden Delicious Apples

Sardabi

Mohtadinia

Shavakhi

et al. 2013

Journal of Food Processing and Preservation

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“…Most published studies using a laboratory prepared or a commercial potassium permanganate product have evaluated the effect of single weight of product on a single produce with most papers not reporting the concentration of potassium permanganate in the product used and often not determining the effect on ethylene concentration. The most comprehensive studies on potassium permanganate were fi rstly by Lidster et al (1985) who found that alumina pellets retained a much greater amount of potassium permanganate than expanded glass beads, the effi ciency of each product to reduce ethylene increased with temperature but contrasting effects were obtained with increasing relative humidity (RH). Secondly, Kavanagh and Wade (1987) studied 21 carrier materials and found large variation among carriers with those of lower bulk density and a higher capacity to absorb potassium permanganate being more effi cient in reducing ethylene levels.…”

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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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“…Potassium permanganate (KMnO 4 ) is the most widely used ethylene scavenger; − however, it is not suitable for food applications due to its high toxicity. KMnO 4 decomposes ethylene via the following reaction: Ozone, as a strong oxidant, is another candidate for ethylene scavenging; , however, it is difficult to handle because it easily decomposes into oxygen, and it is toxic.…”

Section: Introductionmentioning

confidence: 99%

Ethylene Gas Decomposition Using ZSM-5/WO₃-Pt-Nanorod Composites for Fruit Freshness

Kim

Jeong

Kim

2019

ACS Sustainable Chem. Eng.

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The harmful effect of ethylene arising from fruits and vegetables renders heavy losses of fresh-cut products resulting in environmental waste. Various strategies such as controlled atmosphere devices and ethylene scavenger packaging have been developed for extension of shelf life in postharvest commodities. The photocatalytic oxidation process for ethylene removal can be considered as a promising alternative to use of coupling with zeolite absorbents maintaining high surface area though morphological characteristics of photocatalyst nanocrystals. Herein, we developed nanocomposites composed of visible-light active Pt-loaded monoclinic WO3 nanorods on ZSM-5 (ZSM-5/WO3-Pt) displaying a synergistic effect for ethylene removal. The hydroxyl radicals caused by WO3-Pt migrate into the micropores of the ZSM-5 matrix. These facilitated both adsorbing and decomposing ethylene during fruit storage without requiring a circulation device. The ZSM-5/WO3-Pt powders were processed with organic binder-free granules using a drum rotary method, and ethylene removal capacity was studied by measuring the ethylene concentration, CO2, and increased humidity in Tedlar gas sampling bags. The practical applications were tested by evaluating the color change and degree of surface spoilage in tomatoes stored with and without ZSM-5/WO3-Pt; for more realistic conditions, this test was performed in a refrigerator. The results indicate the potential for successful commercialization of this system.

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Laboratory Evaluation of Potassium Permanganate for Ethylene Removal from CA Apple Storages

Cited by 14 publications

References 0 publications

The Effects of 1-Methylcyclopropen (1-MCP) and Potassium Permanganate Coated Zeolite Nanoparticles on Shelf life Extension and Quality Loss of Golden Delicious Apples

The Effects of 1-Methylcyclopropen (1-MCP) and Potassium Permanganate Coated Zeolite Nanoparticles on Shelf life Extension and Quality Loss of Golden Delicious Apples

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

Ethylene Gas Decomposition Using ZSM-5/WO₃-Pt-Nanorod Composites for Fruit Freshness

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Laboratory Evaluation of Potassium Permanganate for Ethylene Removal from CA Apple Storages

Cited by 14 publications

References 0 publications

The Effects of 1-Methylcyclopropen (1-MCP) and Potassium Permanganate Coated Zeolite Nanoparticles on Shelf life Extension and Quality Loss of Golden Delicious Apples

The Effects of 1-Methylcyclopropen (1-MCP) and Potassium Permanganate Coated Zeolite Nanoparticles on Shelf life Extension and Quality Loss of Golden Delicious Apples

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

Ethylene Gas Decomposition Using ZSM-5/WO3-Pt-Nanorod Composites for Fruit Freshness

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Product

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Ethylene Gas Decomposition Using ZSM-5/WO₃-Pt-Nanorod Composites for Fruit Freshness