Identification of Factors Affecting the Deterioration Rate of Fresh-Cut Lettuce in Modified Atmosphere Packaging

Peng, Hui; Kandel, Jinita Sthapit; Michelmore, Richard W.; Šimko, Ivan

doi:10.1007/s11947-020-02538-2

Cited by 23 publications

(7 citation statements)

References 50 publications

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“…If the gas transmission rate of the film is appropriate, CO 2 inside the package can be discharged on time, and the O 2 outside the package can enter, which can avoid the anaerobic respiration and unpleasant odor of fruits and vegetables. 27 The formation of micropores brought gas pathways, which increased the gas transmission rate of the film significantly, and the CNF-PB8 and CNF-PB25 films had similar excellent O 2 transmission rates. The CO 2 transmission rates of CNF-PB8 and CNF-PB25 films were up to 137.06 ± 10.09 and 145.91 ± 11.71 cm 3 /m 2 • day•bar, respectively, which were conducive to the exchange of CO 2 inside and outside the package and avoided respiratory poisoning caused by excessive CO 2 atmosphere (Figure 2a).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Fruits and vegetables still maintain respiration after harvest, and the gas atmosphere inside the package is subject to both respiration and gas transmission rates across the film. If the gas transmission rate of the film is appropriate, CO 2 inside the package can be discharged on time, and the O 2 outside the package can enter, which can avoid the anaerobic respiration and unpleasant odor of fruits and vegetables . The formation of micropores brought gas pathways, which increased the gas transmission rate of the film significantly, and the CNF-PB8 and CNF-PB25 films had similar excellent O 2 transmission rates.…”

Section: Resultsmentioning

confidence: 99%

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CO₂ Escaping In Situ Endowed the Antimicrobial Nanocellulose Packaging Film with a Microporous Structure

Zhou

Yang

et al. 2023

ACS Sustainable Chem. Eng.

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The atmosphere and the mold under high humidity severely determine the shelf-life of fruits and vegetables. The microporous structure is helpful to regulate the atmosphere in the package. In this study, we designed a nanocellulose film with a microporous structure by CO2 escaping in situ. The microporous structure provided a pathway that enhanced the gas transmission rate, with the porosity of the film reaching 79.60% and O2 and CO2 transmission reaching 115.57 ± 1.81 cm3/m2 day bar and 145.91 ± 11.71 cm3/m2 day bar, respectively. Polyethyleneimine was exposed around the micropores accompanied by CO2 escaping in situ, which endowed the film with excellent antimicrobial property. The film could regulate the atmosphere and inhibit the microbial growth to maintain the color and taste of green plums and loquats for a long time. CO2 escaping in situ provides a green and sustainable strategy for the development of packaging materials of the microporous structured nanocellulose films with antimicrobial property.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

CO₂ Escaping In Situ Endowed the Antimicrobial Nanocellulose Packaging Film with a Microporous Structure

Zhou

Yang

et al. 2023

ACS Sustainable Chem. Eng.

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“…Plant material . Lettuce ( Lactuca sativa L.) romaine-type Triple Threat (TT) and Darkland (DA), two cultivars with short and long shelf life, respectively [ 72 ], were planted at three different locations: field plot A at the Spence experimental field, USDA, ARS, Salinas, CA, hereafter referred to as “experimental field”; and as plots embedded in commercial lettuce fields B and C, Salinas, CA, hereafter referred to as “conventional field”. Fields B and C were approximately 1.5 km apart and all three fields were on sandy loam soil and experience highly similar weather conditions.…”

Section: Methodsmentioning

confidence: 99%

Seasonality, shelf life and storage atmosphere are main drivers of the microbiome and E. coli O157:H7 colonization of post-harvest lettuce cultivated in a major production area in California

Leonard

Šimko

Mammel

et al. 2021

Environmental Microbiome

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Background Lettuce is linked to recurrent outbreaks of Shiga toxin-producing Escherichia coli (STEC) infections, the seasonality of which remains unresolved. Infections have occurred largely from processed lettuce, which undergoes substantial physiological changes during storage. We investigated the microbiome and STEC O157:H7 (EcO157) colonization of fresh-cut lettuce of two cultivars with long and short shelf life harvested in the spring and fall in California and stored in modified atmosphere packaging (MAP) at cold and warm temperatures. Results Inoculated EcO157 declined significantly less on the cold-stored cultivar with short shelf life, while multiplying rapidly at 24 °C independently of cultivar. Metagenomic sequencing of the lettuce microbiome revealed that the pre-storage bacterial community was variable but dominated by species in the Erwiniaceae and Pseudomonadaceae. After cold storage, the microbiome composition differed between cultivars, with a greater relative abundance (RA) of Erwiniaceae and Yersiniaceae on the cultivar with short shelf life. Storage at 24 °C shifted the microbiome to higher RAs of Erwiniaceae and Enterobacteriaceae and lower RA of Pseudomonadaceae compared with 6 °C. Fall harvest followed by lettuce deterioration were identified by recursive partitioning as important factors associated with high EcO157 survival at 6 °C, whereas elevated package CO2 levels correlated with high EcO157 multiplication at 24 °C. EcO157 population change correlated with the lettuce microbiome during 6 °C storage, with fall microbiomes supporting the greatest EcO157 survival on both cultivars. Fall and spring microbiomes differed before and during storage at both temperatures. High representation of Pantoea agglomerans was a predictor of fall microbiomes, lettuce deterioration, and enhanced EcO157 survival at 6 °C. In contrast, higher RAs of Erwinia persicina, Rahnella aquatilis, and Serratia liquefaciens were biomarkers of spring microbiomes and lower EcO157 survival. Conclusions The microbiome of processed MAP lettuce evolves extensively during storage. Under temperature abuse, high CO2 promotes a lettuce microbiome enriched in taxa with anaerobic capability and EcO157 multiplication. In cold storage, our results strongly support a role for season and lettuce deterioration in EcO157 survival and microbiome composition, suggesting that the physiology and microbiomes of fall- and spring-harvested lettuce may contribute to the seasonality of STEC outbreaks associated with lettuce grown in coastal California.

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“…Creating better food packaging systems can aid in reducing food waste by extending the quality shelf life of the food. Modified atmosphere packaging (MAP) has been shown to impact lettuce shelf life by controlling the package headspace gas concentrations thereby influencing the rate of respiration (Del Nobile et al, 2006;Escalona et al 2006;Guo et al, 2019;Kim et al, 2005;Martí nez-Sá nchez et al, 2010;McDonald et al, 1990;Olivera et al, 2010;Peng et al, 2020;Soltani Firouz et al, 2021). Cellular respiration is the process by which glucose and oxygen react to produce carbon dioxide, water, and energy.…”

Section: Introductionmentioning

confidence: 99%

“…Another factor that influences product shelf-life is storage temperature. Atmospheres within packages have been shown to change more rapidly at higher temperatures (Oliveira et al, 2010) and high temperatures have led to a faster rate of leafy green deterioration (Peng et al, 2020). MAP and low temperatures along with high relative humidity reduce the rates of release of water through leaves (transpiration) (Soltani Firouz et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Shelf Life of Aquaponically-grown Finstar Lettuce in Different Oxygen Transmission Rate Films

White¹,

Northcutt²,

Beecher³

et al. 2023

JFR

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The effects of oxygen transmission rate of packaging material on the shelf life of aquaponically-grown Finstar lettuce was studied. Parameters of packaging headspace gas composition (oxygen and carbon dioxide concentrations), lettuce pH, percentage weight loss, total aerobic microorganisms, and color were analyzed every ten days for sixty days. Finstar lettuce was stored at 4○C in four different types of packages (treatments), including a clamshell package and three film bags with oxygen transmission rates (OTR) of 3.0-6.0 cc/(m2/24 hr/1 atm), 80-90 cc/(m2/24 hr/1 atm), and >225 cc/(m2/24 hr/1 atm). The percentage weight loss of the 3.0-6.0 OTR package (-0.76-1.05%) was lowest while the percentage weight loss of the clamshell package was highest (0.81-7.72%) among packaging treatments. Nearly ½ of the panelists rated lettuce as fresh enough to eat as is after 50 days of storage in 80-90 cc/(m2/24 hr/1 atm) films while lettuce packaged in the other treatments had less that 1/3 of the panelists judging the lettuce fresh enogh to eat as is. The long shelf-life may be attributed to Finstar having resilient genetic properties along with being greenhouse-grown which lessens the possibility of contamination compared to field-grown lettuces.

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Identification of Factors Affecting the Deterioration Rate of Fresh-Cut Lettuce in Modified Atmosphere Packaging

Cited by 23 publications

References 50 publications

CO₂ Escaping In Situ Endowed the Antimicrobial Nanocellulose Packaging Film with a Microporous Structure

CO₂ Escaping In Situ Endowed the Antimicrobial Nanocellulose Packaging Film with a Microporous Structure

Seasonality, shelf life and storage atmosphere are main drivers of the microbiome and E. coli O157:H7 colonization of post-harvest lettuce cultivated in a major production area in California

Shelf Life of Aquaponically-grown Finstar Lettuce in Different Oxygen Transmission Rate Films

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Identification of Factors Affecting the Deterioration Rate of Fresh-Cut Lettuce in Modified Atmosphere Packaging

Cited by 23 publications

References 50 publications

CO2 Escaping In Situ Endowed the Antimicrobial Nanocellulose Packaging Film with a Microporous Structure

CO2 Escaping In Situ Endowed the Antimicrobial Nanocellulose Packaging Film with a Microporous Structure

Seasonality, shelf life and storage atmosphere are main drivers of the microbiome and E. coli O157:H7 colonization of post-harvest lettuce cultivated in a major production area in California

Shelf Life of Aquaponically-grown Finstar Lettuce in Different Oxygen Transmission Rate Films

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Product

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CO₂ Escaping In Situ Endowed the Antimicrobial Nanocellulose Packaging Film with a Microporous Structure

CO₂ Escaping In Situ Endowed the Antimicrobial Nanocellulose Packaging Film with a Microporous Structure