Biosensor signal amplification of vesicles functionalized with glycolipid for colorimetric detection of Escherichia coli

Su, Yanlei; Li, Jinru; Jiang, Long; Cao, Jie

doi:10.1016/j.jcis.2004.10.003

Cited by 61 publications

(40 citation statements)

References 26 publications

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“…[2][3][4][5][6][7][8][9][10][11] It is well known that the spacially aligned monomeric diacetylene moieties undergo photo polymerization process via a 1,4-addition mechanism and form conjugated chains that give the molecule a significant color change. 12 Due to this unique color change, efforts have been devoted to develop efficient sensor systems based on this polyacetylenes.…”

Section: Methodsmentioning

confidence: 99%

Preparation of Carbohydrate Derivatives with PCDA Tails: Applicationfor Cell Surface Recognition

2009

Bulletin of the Korean Chemical Society

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Section: Methodsmentioning

confidence: 99%

Preparation of Carbohydrate Derivatives with PCDA Tails: Applicationfor Cell Surface Recognition

2009

Bulletin of the Korean Chemical Society

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“…The conjugated PDA has two spectroscopically distinct phases, designated as the blue and red forms due to their excitation absorption peaks at 650 and 540 nm, respectively. Under external perturbation, the conjugated PDA backbone can undergo a dramatic reversible or irreversible color change, depending on the chemical structure of PDA (Su et al 2005).…”

Section: Polydiacetylenesmentioning

confidence: 99%

“…The most probable manner in which the film interacts with E. coli is through the adsorption of E. coli on the film surface using its pili. For E. coli, Type 1 pili mediate binding to mannose-containing receptors, while P pili mediate binding to galactosecontaining receptors (Su et al 2005). There is, in fact, a very low affinity identified in carboxylate-protein interactions.…”

Section: Polydiacetylene Films As Biosensor To Food Applicationmentioning

confidence: 99%

Polydiacetylene as a Biosensor: Fundamentals and Applications in the Food Industry

Pires

Soares

Silva

et al. 2008

Food Bioprocess Technol

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Biosensors offer the potential for real-time pathogen detection. Polydiacetylene (PDA) is an ideal choice for use as a sensor due to its unique optical properties. PDA molecules can form thin films or vesicles that change color from deep blue to red in response to different stimuli, like temperature, pH, and the presence of biological molecules. PDA films and vesicles have been proven to be promising devices for the detection of bacteria and bacterial toxins. Langmuir troughs (for films) and microcalorimetry (for vesicles) are among the many techniques used to characterize PDA films and vesicles. In order to enable more applications of PDA films, it is imperative to elucidate and gain a deeper understanding of the molecular interactions associated with their color change. In addition, it is necessary to transfer the PDA film onto a solid support like plastic in order to incorporate PDA biosensors into an intelligent packaging system. Through the use of such a system, consumers can monitor food quality, thereby preventing foodborne outbreaks. In this review, we discuss the formation of PDA films and vesicles, their characteristics, and their potential applications as biosensors. The possibility to incorporate PDA biosensors into an intelligent packaging system to be used in the food industry is also explored.

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“…The blue and red forms result from absorption peaks at approximately 650 and 540 nm, respectively [20,21]. In order to optimize the PDA vesicle application as surfactant nanosensors is fundamental to know the driving force for vesicle-surfactant interaction.…”

Section: Introductionmentioning

confidence: 99%

Polydiacetylene Vesicles for Detecting Surfactants: Understanding the Driven Forces of Polydiacetylene-Surfactant Interaction

Pires¹,

Soares²,

Silva³

et al. 2016

J Food Chem Nanotechnol

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Surfactants are widely used by food industry thus its discharge is an environmental concern; and development of Polydiacetylene (PDA)-based sensors may detect these molecules. However, to improve the sensor efficiency is necessary to understand interactions between PDA vesicles and surfactants. In this work, we purpose to investigate the interactions between surfactants and PDA vesicles as well as between surfactants and PDA + cholesterol (CHO) + sphingomyelin (SPH) vesicles dispersed in water. The addition of a cationic surfactant, hexadecyltrimethylammonium bromide (CTAB), induced a blue-tored spectrophotometric transition in both structures; however, the addition of the anionic compounds, sodium dodecyl sulfate (NaDS) and lithium dodecyl sulfate (LiDS) did not change the vesicle color. The addition of the cationic surfactant increased the hydrodynamic radium (R h ) of the PDA vesicles (from 39.82 ± 3 nm to 96.85 ± 3 nm) and the PDA/CHO/SHP vesicles (from 160.89 ± 3 nm to 219.84 ± 3 nm). The presence of NaDS and LiDS also increased the size of the PDA vesicles (to 43.50 ± 3 nm and 43.75 ± 3 nm, respectively) and the PDA/ CHO/SPH vesicles (to 201.91 ± 3 nm and 210.24 ± 3 nm, respectively). The interaction energies between the cationic surfactant and PDA and PDA/CHO/ SPH were different; however, both were entropically driven. PDA vesicles show potential to be used as sensors for cationic surfactants detection.

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Biosensor signal amplification of vesicles functionalized with glycolipid for colorimetric detection of Escherichia coli

Cited by 61 publications

References 26 publications

Preparation of Carbohydrate Derivatives with PCDA Tails: Applicationfor Cell Surface Recognition

Preparation of Carbohydrate Derivatives with PCDA Tails: Applicationfor Cell Surface Recognition

Polydiacetylene as a Biosensor: Fundamentals and Applications in the Food Industry

Polydiacetylene Vesicles for Detecting Surfactants: Understanding the Driven Forces of Polydiacetylene-Surfactant Interaction

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