Production of natural chitin film from pupal shell of moth: Fabrication of plasmonic surfaces for SERS-based sensing applications

Chen, Yongming; Pekdemir, Sami; Bilican, İsmail; Koc-Bilican, Behlül; Çakmak, Betül; Ali, Asad; Zang, Lian-Sheng; Önses, M. Serdar; Kaya, Murat

doi:10.1016/j.carbpol.2021.117909

Cited by 18 publications

(5 citation statements)

References 61 publications

(60 reference statements)

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“…Natural polymers, such as cellulose and chitin, have been widely designed as hydrogels [ 1 , 2 ], films [ 3 , 4 ], catalysts [ 5 , 6 ], and adsorbents [ 7 , 8 ] due to their abundant reserves. Chitin is the second most abundant biopolymer on earth after cellulose, and it is found in the shells of arthropods, the skeletons of squid and insects, and the cell walls of some fungi [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation, Characterization and Gelation of a Fungal Nano Chitin Derived from Hericium erinaceus Residue

Liao

Huang

2022

Polymers

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Nano chitin is a promising biocompatible material with wide applications. In this work, a fungal-derived nano chitin was prepared from Hericium erinaceus residue via mineral/protein purification and subsequent TEMPO-mediated oxidation. The structure, dispersity, and gelation ability of the prepared fungal nano chitin were studied. The results showed that the average length and width of the prepared fungal nano chitin were 336.6 nm and 6.4 nm, respectively, and the aspect ratio exceeded 50:1. The nano chitin retained the basic structure of chitin, while the crystallization index was improved. In addition, the dispersity of the nano chitin in aqueous media was evaluated by the effective diameter, and the polydispersion index was mainly affected by pH and ionic strength. Under acetic acid “gas phase coagulation”, the prepared nano chitin dispersions with mass concentrations of 0.2, 0.4, 0.6, and 0.8% were converted into gels by enhanced hydrogen bond crosslinking between nano chitins.

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Section: Introductionmentioning

confidence: 99%

Preparation, Characterization and Gelation of a Fungal Nano Chitin Derived from Hericium erinaceus Residue

Liao

Huang

2022

Polymers

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“…4 Chitin, poly(β-(1!4)-N-acetyl-D-glucosamine), is the second most abundant natural polymer in nature behind cellulose, and mainly exists in the exoskeleton of crustaceans and in the cell walls of fungi and yeast. 23,24 Due to its good biocompatibility, biodegradability and bioactivity, chitin and its derivatives can be prepared into hydrogels, [25][26][27] microspheres, [28][29][30] films, 31,32 sponges, 33,34 and other functional materials. These chitin based materials have been widely explored and used in various fields, such as tissue engineering and food packaging.…”

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confidence: 99%

Multifunctional edible chitin nanofibers/ferulic acid composite coating for fruit preservation

Jia

Lin

Yang

et al. 2023

Journal of Polymer Science

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About one‐third of the world's entire food production is lost or wasted every year, in which the perishables such as fruits and vegetables account for the largest proportion due to their short shelf life. Therefore, it has attracted great attention to the development of food preservation. In this paper, a simple strategy for food preservation is developed. Chitin nanofiber aqueous suspension is used as the substrate, and ferulic acid (FA) acts as the physical crosslinker to obtain a multifunctional composite protective coating for fruits. The results of Zeta potential, X‐ray photoelectron spectroscopy (XPS) and X‐ray diffraction (XRD) indicate that there are multiple noncovalent interactions between FA and chitin nanofibers. The chitin/FA coating films show superior mechanical properties, water and oxygen resistance. They could effectively reduce the water loss rate, delay ripening, and resist oxidation and microbial invasion for the fresh strawberries and fresh‐cut apples, indicating the potential in food preservation.

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“…As an alternative green solution, some biomaterials have been suggested to replace such artificial dielectric structures in the fabrication of hybrid SERS substrates [ 6 , 7 , 8 , 9 , 10 ]. Among these, diatoms have been proposed as an outstanding source of biosilica with periodic porosity, mainly in the range of visible light wavelengths [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Tuning SERS Signal via Substrate Structuring: Valves of Different Diatom Species with Ultrathin Gold Coating

2023

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The discovered light modulation capabilities of diatom silicious valves make them an excellent toolkit for photonic devices and applications. In this work, a reproducible surface-enhanced Raman scattering (SERS) enhancement was achieved with hybrid substrates employing diatom silica valves coated with an ultrathin uniform gold film. Three structurally different hybrid substrates, based on the valves of three dissimilar diatom species, have been compared to elucidate the structural contribution to SERS enhancement. The comparative analysis of obtained results showed that substrates containing cylindrical Aulacoseira sp. valves achieved the highest enhancement, up to 14-fold. Numerical analysis based on the frequency domain finite element method was carried out to supplement the experimental results. Our results demonstrate that diatom valves of different shapes can enhance the SERS signal, offering a toolbox for SERS-based sensors, where the magnitude of the enhancement depends on valve geometry and ultrastructure.

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Production of natural chitin film from pupal shell of moth: Fabrication of plasmonic surfaces for SERS-based sensing applications

Cited by 18 publications

References 61 publications

Preparation, Characterization and Gelation of a Fungal Nano Chitin Derived from Hericium erinaceus Residue

Preparation, Characterization and Gelation of a Fungal Nano Chitin Derived from Hericium erinaceus Residue

Multifunctional edible chitin nanofibers/ferulic acid composite coating for fruit preservation

Tuning SERS Signal via Substrate Structuring: Valves of Different Diatom Species with Ultrathin Gold Coating

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