Development of a colorimetric pH indicator using nanofibers containing Spirulina sp. LEB 18

Kuntzler, Suelen Goettems; Costa, Jorge Alberto Vieira; Brizio, Ana Paula Dutra Resem; Morais, Michele Greque de

doi:10.1016/j.foodchem.2020.126768

Cited by 49 publications

(19 citation statements)

References 35 publications

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“…LED 18) derived from the biomass of microalgae Spirulina as the colorimetric source since the presence of them showed a characteristic blue or green color. 132,138 As shown in Figure 10 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.…”

Section: ■ Electrospinning Of Pla Nanofibersmentioning

confidence: 99%

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%

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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“…Despite the fact that it is a convenient method, the dispersion of the powders needs to be firstly considered. There are also some other natural dyes with conjugated structure, such as chlorophyll (Veiga-Santos, Ditchfield, & Tadini, 2011), curcumin (Ma, Du, & Wang, 2017), alizarin (Parya Ezati & Rhim, 2020) and pigment from the microalga Spirulina (Goettems Kuntzler, et al, 2020), have been used in freshness indicator.…”

Section: Synthetic Ph Dyesmentioning

confidence: 99%

Recent developments in colorimetric and optical indicators stimulated by volatile base nitrogen to monitor seafood freshness

Wang

et al. 2021

Food Packaging and Shelf Life

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“…For this reason, the recently developed pH indicators can be introduced directly in the headspace of the food package in order to provide qualitative or semi-quantitative information of the presence of the microorganisms in the food, indicating its quality through visual colorimetric changes . To do so, molecules able to present a different hue, depending on the pH of the environment, have been investigated and used as principal components of these indicators, with natural molecules being the most recent and prevalent preference, mainly due to their biocompatible and sustainable essence. − …”

Section: Introductionmentioning

confidence: 99%

Highly Porous Curcumin-Loaded Polymer Mats for Rapid Detection of Volatile Amines

Kossyvaki

Barbetta

Contardi

et al. 2022

ACS Appl. Polym. Mater.

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Here, the development of highly porous colorimetric indicators that are able to rapidly sense the presence of amine vapors is presented. Specifically, porous, curcumin-loaded polycaprolactone fibers are formed by electrospinning through non-solvent-induced phase separation. In comparison to the non-porous fibers, the developed system shows significantly higher sensitivity and responsivity to the presence of dimethylamine vapors, with a distinct color change at very low vapor concentrations (2.33 ppm compared to 9.26 ppm) within the first 5 s of exposure. Indeed, CIELAB analysis proves that the induced color changes can be easily perceived visually, as the differences between the initial and the final color of the indicator after its interaction with the modified environment are well above the limit for visual perception, even by inexperienced users. Furthermore, the color changes are reversible, enabling the use of the same indicator several times, making it, thus, a sustainable colorimetric indicator system that can be used in applications where the rapid detection of low concentration of alkaline vapors is necessary.

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Development of a colorimetric pH indicator using nanofibers containing Spirulina sp. LEB 18

Cited by 49 publications

References 35 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

Recent developments in colorimetric and optical indicators stimulated by volatile base nitrogen to monitor seafood freshness

Highly Porous Curcumin-Loaded Polymer Mats for Rapid Detection of Volatile Amines

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