Development of a PCL-PEO double network colorimetric pH sensor using electrospun fibers containing Hibiscus rosa sinensis extract and silver nanoparticles for food monitoring

Jovanska, Lavernchy; Chiu, Chun‐Hui; Yeh, Yi‐Cheun; Chiang, Wen Dee; Hsieh, Chang-Chi; Wang, Reuben

doi:10.1016/j.foodchem.2021.130813

Cited by 31 publications

(14 citation statements)

References 32 publications

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“…It is probably because PLA is a highly hydrophobic polymer that may repel water absorption of fabricated materials and contribute to a less distinct color response to pH buffers. 139 However, excessively hydrophilic materials can also easily result in the leakage of indicator substances, limiting their usage in packaging. Therefore, the hydrophobicity and hydrophilicity of materials need to be kept within an appropriate range.…”

Section: ■ Electrospinning Of Pla Nanofibersmentioning

confidence: 99%

“…Therefore, the hydrophobicity and hydrophilicity of materials need to be kept within an appropriate range. 138,139 In this case, the combination of PLA can solve the problem that packaging materials are too hydrophilic to be applied properly, which can be achieved by adjusting the ratios of blended polymers.…”

Section: ■ Electrospinning Of Pla Nanofibersmentioning

confidence: 99%

“…At present, there are few studies of applying PLA-based nanofibers as a colorimetric pH indictor for intelligent packaging. It is probably because PLA is a highly hydrophobic polymer that may repel water absorption of fabricated materials and contribute to a less distinct color response to pH buffers . However, excessively hydrophilic materials can also easily result in the leakage of indicator substances, limiting their usage in packaging.…”

Section: Applictions Of Pla-based Nanofibers For Food Packagingmentioning

confidence: 99%

“…However, excessively hydrophilic materials can also easily result in the leakage of indicator substances, limiting their usage in packaging. Therefore, the hydrophobicity and hydrophilicity of materials need to be kept within an appropriate range. , In this case, the combination of PLA can solve the problem that packaging materials are too hydrophilic to be applied properly, which can be achieved by adjusting the ratios of blended polymers.…”

Section: Applictions Of Pla-based Nanofibers For Food Packagingmentioning

confidence: 99%

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Electrospinning of PLA Nanofibers: Recent Advances and Its Potential Application for Food Packaging

Wang

et al. 2022

J. Agric. Food Chem.

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Poly(lactic acid), also abbreviated as PLA, is a promising biopolymer for food packaging owing to its environmental-friendly characteristic and desirable physical properties. Electrospinning technology makes the production of PLA-based nanomaterials available with expected structures and enhanced barrier, mechanical, and thermal properties; especially, the facile process produces a high encapsulation efficiency and controlled release of bioactive agents for the purpose of extending the shelf life and promoting the quality of foodstuffs. In this study, different types of electrospinning techniques used for the preparation of PLA-based nanofibers are summarized, and the enhanced properties of which are also described. Moreover, its application in active and intelligent packaging materials by introducing different components into nanofibers is highlighted. In all, the review establishes the promising prospects of PLA-based nanocomposites for food packaging application.

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Section: ■ Electrospinning Of Pla Nanofibersmentioning

confidence: 99%

Section: ■ Electrospinning Of Pla Nanofibersmentioning

confidence: 99%

Section: Applictions Of Pla-based Nanofibers For Food Packagingmentioning

confidence: 99%

Section: Applictions Of Pla-based Nanofibers For Food Packagingmentioning

confidence: 99%

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Electrospinning of PLA Nanofibers: Recent Advances and Its Potential Application for Food Packaging

Wang

et al. 2022

J. Agric. Food Chem.

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“…Recent research reports on active packaging obtained by incorporation of vanillin or quercetin as natural active agents into zein fibers prepared by combining electrospinning and supercritical fluids impregnation [25] or encapsulated in cyclodextrin inclusion complex [26]. Fiber mats were produced from co-electrospun ethanolic extract of Hibiscus rosa sinensis containing anthocyanin with polycaprolactone, polyethylene oxide and silver nanoparticles with the aim to be used as freshness indicator due to pH sensitivity induced color change [27].…”

Section: Introductionmentioning

confidence: 99%

Bioactive Electrospun Fibers of Poly(ε-Caprolactone) Incorporating α-Tocopherol for Food Packaging Applications

Dumitriu¹,

Stoleru²,

Mitchell

et al. 2021

Molecules

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Antioxidant activity is an important feature for food contact materials such as packaging, aiming to preserve freshness and retard food spoilage. Common bioactive agents are highly susceptible to various forms of degradation; therefore, protection is required to maintain functionality and bioavailability. Poly(ε-caprolactone) (PCL), a biodegradable GRAS labeled polymer, was used in this study for encapsulation of α-tocopherol antioxidant, a major component of vitamin E, in the form of electrospun fibers. Rheological properties of the fiber forming solutions, which determine the electrospinning behavior, were correlated with the properties of electrospun fibers, e.g., morphology and surface properties. Interactions through hydrogen bonds were evidenced between the two components. These have strong effect on structuration of macromolecular chains, especially at low α-tocopherol amounts, decreasing viscosity and elastic modulus. Intra-molecular interactions in PCL strengthen at high α-tocopherol amounts due to decreased solvation, allowing good structural recovery after cease of mechanical stress. Morphologically homogeneous electrospun fibers were obtained, with ~6 μm average diameter. The obtained fibers were highly hydrophobic, with fast release in 95% ethanol as alternative simulant for fatty foods. This induced good in vitro antioxidant activity and significant in vivo reduction of microbial growth on cheese, as determined by respirometry. Therefore, the electrospun fibers from PCL entrapping α-tocopherol as bioactive agent showed potential use in food packaging materials.

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A Smartphone Coupled Freshness Indicator Prepared by Rub‐coating of Hibiscus Flowers on Paper substrates for Visual Monitoring of the Spoilage of Milk

Chaithra

2022

ChemistrySelect

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This study developed an inexpensive and easy-to-use milk freshness indicator (H-Paper) by rub-coating hibiscus flowers onto paper. As per the best of our knowledge, this is the first example of a food quality indicator prepared by direct handrubbing of a natural halochromic material onto paper substrates. Unlike the previously reported colorimetric indicators from natural sources, our indicator does not require the extraction of anthocyanins from the natural product. The H-Paper undergoes a quantifiable color change from green to purple to pink corresponding to fresh, spoiling, and spoiled milk samples. Digital photographs of H-Paper treated with milk samples were acquired using a smartphone, and RGB indices were analyzed using a free application. The red chromatic shift was used as a parameter to quantify color change of H-Paper to follow the spoilage of milk. Anthocyanins present in the hibiscus flowers are responsible for this colorimetric response. This work demonstrates a proof-of-concept for directly rubcoating halochromic materials onto a substrate to fabricate food freshness indicators. The H-Paper indicator has advantages of naked-eye analysis, consumer-friendliness, and instrument-free operation. This requires neither any laboratory accessories nor the expertise of a trained analyst for its preparation and operation, which is appropriate for use in resource-limited settings.

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Development of a PCL-PEO double network colorimetric pH sensor using electrospun fibers containing Hibiscus rosa sinensis extract and silver nanoparticles for food monitoring

Cited by 31 publications

References 32 publications

Electrospinning of PLA Nanofibers: Recent Advances and Its Potential Application for Food Packaging

Electrospinning of PLA Nanofibers: Recent Advances and Its Potential Application for Food Packaging

Bioactive Electrospun Fibers of Poly(ε-Caprolactone) Incorporating α-Tocopherol for Food Packaging Applications

A Smartphone Coupled Freshness Indicator Prepared by Rub‐coating of Hibiscus Flowers on Paper substrates for Visual Monitoring of the Spoilage of Milk

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