Preparation and characterization of a poly(ether-block-amide) film–based CO2 indicator for monitoring kimchi quality

Baek, Seunghye; Maruthupandy, Muthuchamy; Lee, Kaeun; Kim, Dowan; Seo, Jongchul

doi:10.1016/j.reactfunctpolym.2018.07.007

Cited by 29 publications

(19 citation statements)

References 39 publications

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“…Gas indicators, commonly produced in the form of label, are attached inside the food package for monitoring the changes of the level of gas, such as O 2 and CO 2 , and then provide information through visual color changes [48]. A mixed pH dye-based indicator was developed for checking their ability of changes in color at different concentrations of CO 2 (10-80%) [48]. This indicator is relatively sensitive to the change of CO 2 level by changing the color from blue to green when the CO 2 level increased.…”

Section: Gas Indicatorsmentioning

confidence: 99%

“…Thus, it needs to combine with other chemical dyes to enable pH indication [65]. Baek et al [48] studied the combination of two chemical dye indicators at different ratios (methyl red/bromothymol blue; 1:9, 3:7, 5:5, 7:3, and 9:1). The authors suggested that the mixing of two dyes exhibited various color changes in a narrow pH range, compared to the methyl red alone or bromothymol blue alone.…”

Section: Chemical Dyementioning

confidence: 99%

“…The authors suggested that the mixing of two dyes exhibited various color changes in a narrow pH range, compared to the methyl red alone or bromothymol blue alone. Therefore, the combination of two dyes has been widely used as chemical indicator [7,39,48,52].…”

Section: Chemical Dyementioning

confidence: 99%

“…In the recent year, the applications of smart packaging tools or devices on food product have been described [48,53,58]. Indicators are the most frequently used tool due to their nondestructive method, simplicity, low cost, and easy detection by the naked eye.…”

Section: Applications Of Smart Packaging Filmsmentioning

confidence: 99%

“…It was demonstrated that the sensor could retain its color and sensitivity to CO 2 at 4°C for 21 days. Recently, an indicator for monitoring the fermentation stage of kimchi was developed by Baek et al [48]. It was prepared by coating poly(ether-block-amide) that contained chemical dye (mixing of methyl red and bromothymol blue, ratio of 3:7) on polyethylene terephthalate (PET).…”

Section: Application Of Smart Packaging On Fruits and Vegetablesmentioning

confidence: 99%

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Valorization of Food Processing By-Products as Smart Food Packaging Materials and Its Application

Rawdkuen¹,

Kaewprachu²

2020

Food Preservation and Waste Exploitation

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Traditional food packaging systems cannot provide any information related to the food quality during storage to consumers. Recently, the renewable resources have been considered as starting materials for making biodegradable packaging film. A variety of food processing by-products have been utilized, either alone or in mixtures, to produce packaging films with proper properties. It shows high possibility for smart biodegradable filmmaking as well as is applicable in the food industry. In order to monitor the food quality and to reduce the food loss and waste, a new packaging technology has been increasingly developed. Smart packaging refers to packaging systems which can monitor, detect, and inform about the qualities of food in real time. Indicator is the most commonly used device, which can communicate through direct visual change, especially in color. Natural extract and synthetic color are usually added into smart packaging films. However, synthetic dyes may be harmful to the consumers' health. Thus, the use of natural extract has been increased. Smart packaging films can be applied to various types of food products in order to monitor the food quality during transportation and storage. Thus, smart packaging could be used as a nondestructive tool to detect the food quality.

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Section: Gas Indicatorsmentioning

confidence: 99%

Section: Chemical Dyementioning

confidence: 99%

Section: Chemical Dyementioning

confidence: 99%

Section: Applications Of Smart Packaging Filmsmentioning

confidence: 99%

Section: Application Of Smart Packaging On Fruits and Vegetablesmentioning

confidence: 99%

See 3 more Smart Citations

Valorization of Food Processing By-Products as Smart Food Packaging Materials and Its Application

Rawdkuen¹,

Kaewprachu²

2020

Food Preservation and Waste Exploitation

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Carbon Dioxide Sensors/Indicators‐Based Intelligent Food Packaging

Gupta,

Sai Baba,

Singh

et al. 2024

Smart Food Packaging Systems

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A Flexible and Polymer‐Based Chemiresistive CO₂ Gas Sensor at Room Temperature

Shahrbabaki

Farajikhah

Ghasemian

et al. 2023

Adv Materials Technologies

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CO2 sensing is important in many applications ranging from air‐quality monitoring to food packaging. In this study, an amine‐functionalized copolymer, poly(N‐[3‐(dimethylamino)propyl]‐methacrylamide‐co‐2‐N‐morpholinoethyl methacrylate) (p(D‐co‐M)) is synthesized, offering moderate basicity suitable for a wide CO2 detection range. Taking advantage of this characteristic of p(D‐co‐M), this polymer is used for designing a chemiresistive, low‐cost, flexible, and reversible CO2 sensor. The p(D‐co‐M)‐based sensors show a noticeable decrease in their direct current resistance and alternating current impedance upon exposure to a wide range of CO2 concentration (1–100%) at room temperature with a response and a recovery time of 6 and 14 min, respectively. Additionally, the p(D‐co‐M)‐based sensors demonstrate a favorable selectivity to CO2 in the presence of interfering gases including methanol, ethanol, toluene, and acetone. Surface potential measurements show an increase of +6.34 V upon exposure to humidity and CO2, indicating the protonation of the polymer's amine sites, facilitating the detection of CO2 in the wet environment. This sensor is efficient for detecting CO2 concentration released during fermentation of kimchi as a food model.

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Preparation and characterization of a poly(ether-block-amide) film–based CO2 indicator for monitoring kimchi quality

Cited by 29 publications

References 39 publications

Valorization of Food Processing By-Products as Smart Food Packaging Materials and Its Application

Valorization of Food Processing By-Products as Smart Food Packaging Materials and Its Application

Carbon Dioxide Sensors/Indicators‐Based Intelligent Food Packaging

A Flexible and Polymer‐Based Chemiresistive CO₂ Gas Sensor at Room Temperature

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Preparation and characterization of a poly(ether-block-amide) film–based CO2 indicator for monitoring kimchi quality

Cited by 29 publications

References 39 publications

Valorization of Food Processing By-Products as Smart Food Packaging Materials and Its Application

Valorization of Food Processing By-Products as Smart Food Packaging Materials and Its Application

Carbon Dioxide Sensors/Indicators‐Based Intelligent Food Packaging

A Flexible and Polymer‐Based Chemiresistive CO2 Gas Sensor at Room Temperature

Contact Info

Product

Resources

About

A Flexible and Polymer‐Based Chemiresistive CO₂ Gas Sensor at Room Temperature