Determination of the molecular mass of hydrolyzed fibroin obtained from natural silk fibroin by spectrophotometry

Eshchanov, Khushnudbek; Baltayeva, M. M.

doi:10.18596/jotcsa.969482

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Hydrolyzed fibroin (HF) samples were placed in aqueous solutions containing copper (II) ions. We have reported about the preparation of HF from silk fibroin fibers and its structure and properties in our previous publications [18,19]. The main reason we chose HF for the experiment is that it has a large proportion of large chains.…”

Section: Scheme 1: Sequence Of Amino Acid Residues In the Heavy Chain...mentioning

confidence: 99%

Study of the binding of copper (II) ions to the heavy chain of silk fibroin using the charmm22 force field

Polvonova,

Eshchanov,

Esomurodova

2024

IJAC

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Silk fibroin is of great interest due to its unique mechanical properties and preparation of biomaterials. It is important to study the mechanisms of the interaction of fibroin with metal ions and the composition of the resulting complexes. We studied the possibilities of coordination binding of copper (II) ions to the heavy chain of the silk fibroin molecule of calculations using the CHARMM22 force field and determined the optimal parts for coordination bonds. To practically confirm the results obtained in theoretical calculations, samples of fibroin containing copper (II) ions were analyzed by ATR-FTIR spectroscopy, and it was proved that copper ions are coordinately bound to the groups in fibroin. The agreement of the results obtained in the theoretical calculations with the results of the actual analysis confirms that indeed, copper (II) ions correspond to the conditions studied by modelling.

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Section: Scheme 1: Sequence Of Amino Acid Residues In the Heavy Chain...mentioning

confidence: 99%

Study of the binding of copper (II) ions to the heavy chain of silk fibroin using the charmm22 force field

Polvonova,

Eshchanov,

Esomurodova

2024

IJAC

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“…Sericin is a water-soluble globular protein made of side chains containing polar entities like amino, hydroxyl, and carboxyl functional groups. It is present as a tube-like enclosure over the silk fibroin as shown in SEM Figure 1B ( Pérez-Rigueiro et al, 2002 ), with molecular weight distribution varying between 10 and 400 kDa ( Matsuhira and Osaki, 2015 ; Eshchanov et al, 2021 ). Sericin has exclusive functionalities due to its molecular structure.…”

Section: Silk Structure and Processingmentioning

confidence: 99%

Silk and its composites for humidity and gas sensing applications

et al. 2023

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Silk fibroin (SF) is a natural protein largely used in the textile industry with applications in bio-medicine, catalysis as well as in sensing materials. SF is a fiber material which is bio-compatible, biodegradable, and possesses high tensile strength. The incorporation of nanosized particles into SF allows the development of a variety of composites with tailored properties and functions. Silk and its composites are being explored for a wide range of sensing applications like strain, proximity, humidity, glucose, pH and hazardous/toxic gases. Most studies aim at improving the mechanical strength of SF by preparing hybrids with metal-based nanoparticles, polymers and 2D materials. Studies have been conducted by introducing semiconducting metal oxides into SF to tailor its properties like conductivity for use as a gas sensing material, where SF acts as a conductive path as well as a substrate for the incorporated nanoparticles. We have reviewed gas and humidity sensing properties of silk, silk with 0D (i.e., metal oxide), 2D (e.g., graphene, MXenes) composites. The nanostructured metal oxides are generally used in sensing applications, which use its semiconducting properties to show variation in the measured properties (e.g., resistivity, impedance) due to analyte gas adsorption on its surface. For example, vanadium oxides (i.e., V2O5) have been shown as candidates for sensing nitrogen containing gases and doped vanadium oxides for sensing CO gas. In this review article we provide latest and important results in the gas and humidity sensing of SF and its composites.

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Physicochemical, Sorption, and Morphological Characteristics of Bombyx Mori Silkworm Cocoon Fibroin and a Multifunctional Hemosorbent Obtained on Its Basis

2023

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Determination of the molecular mass of hydrolyzed fibroin obtained from natural silk fibroin by spectrophotometry

Cited by 4 publications

References 8 publications

Study of the binding of copper (II) ions to the heavy chain of silk fibroin using the charmm22 force field

Study of the binding of copper (II) ions to the heavy chain of silk fibroin using the charmm22 force field

Silk and its composites for humidity and gas sensing applications

Physicochemical, Sorption, and Morphological Characteristics of Bombyx Mori Silkworm Cocoon Fibroin and a Multifunctional Hemosorbent Obtained on Its Basis

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