Effect of water content on electrical conductivity of fish skin collagen

Gauza, Marlena; Kubisz, Leszek

doi:10.1016/j.jnoncrysol.2010.07.032

Cited by 5 publications

(2 citation statements)

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“…The protein content of fish skin is higher than that of fish muscle, and the collagen content of fish skin can account for more than 80% of the total protein content, which is much higher than that of other parts of fish body [7]. The utilization of fish skin collagen not only solves the problem of fishery waste recovery, but also has the following advantages compared with mammalian collagen [6,8]. Firstly, fish skin collagen is easily soluble in neutral salt solution or dilute acid, even at low temperature, so it is easier to modulate soluble collagen solution [9,10].…”

Section: Introductionmentioning

confidence: 99%

Collagen/Chitosan Complexes: Preparation, Antioxidant Activity, Tyrosinase Inhibition Activity, and Melanin Synthesis

Hua

Tiantian

et al. 2020

IJMS

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Bioactive collagen/chitosan complexes were prepared by an ion crosslinking method using fish skin collagen and chitosan solution as raw materials. Scanning electron microscopy observation confirmed that the collagen/chitosan complexes were of a uniform spherical shape and uniform particle size. The complexes were stable at different pH values for a certain period of time through swelling experiments. Differential scanning calorimetry (DSC) showed the collagen/ chitosan complexes were more stable than collagen. X-ray diffraction (XRD) showed that the complexes had a strong crystal structure, and Fourier transform infrared spectroscopy (FTIR) data revealed the changes in the secondary structure of the protein due to chitosan and TPP crosslinking. The content of malondialdehyde (MDA) in the complex treatment group was considerably lower, but the content of SOD was significantly higher than that of the collagen group or chitosan group. In addition, the collagen/chitosan complexes could considerably reduce melanin content, inhibit tyrosinase activity, and down-regulate tyrosinase mRNA expression. In conclusion, the collagen/chitosan complexes were potential oral protein preparation for antioxidant enhancement and inhibiting melanin synthesis.

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Section: Introductionmentioning

confidence: 99%

Collagen/Chitosan Complexes: Preparation, Antioxidant Activity, Tyrosinase Inhibition Activity, and Melanin Synthesis

Hua

Tiantian

et al. 2020

IJMS

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“…Earlier results show that the size of peak observed in the temperature range of about 320350 K is correlated with air humidity [6]. Heating in the temperature of 377 K is supposed to remove bound water.…”

Section: Methodsmentioning

confidence: 88%

Influence of Transitional Metals Doping on Conductivity of Collagen Lyophilisate and Elastin

Gauza

Kubisz

2012

Acta Phys. Pol. A

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Knowing that conductivity is a temperature function σ = f (T ) allows us to estimate the thermal stability of collagen preparations from sh skin. Measurements can provide information, which is crucial for technologies applying this type of collagen. Conductivity σ measurements were performed in a constant electric eld E = 1 kV/m, in the temperature range of 290480 K. White collagen lyophilisate was used as control material. It contained neither elastin nor melanin dopants nor non-organic dopants such as gold, copper, silver or zinc. Gold, copper, silver and zinc belong to the group of transitional metals and they have intermediate properties of both alkaline metals and metals in the p block of the periodic table. The common feature of most of these elements is their ability to form coordination complexes of intense color. In the measured materials peaks were found in the temperature range of 303323 K. Peak temperature and its shape depend on the type of material. In the case of nano-gold doping a drop in peak temperature and a decrease in conductivity were observed. The measured materials are characterized by lower thermal resistance than bovine collagen. Nevertheless, thermal stability of sh skin collagen is high enough for sh skin collagen to replace bovine collagen. The measurement results obtained for white collagen and white collagen with Zn 2+ may indicate better bonding of free water. The presence of nano-silver and nano-copper as doping agents in graphite collagen may lead to a decrease in hygroscopy of the material and, as a result, may increase its resistance to bacteria.

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On the electrical properties of collagen macromolecule solutions: Role of collagen-water interactions

Ashoorirad

Saviz

Fallah

2020

Journal of Molecular Liquids

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Effect of water content on electrical conductivity of fish skin collagen

Cited by 5 publications

References 20 publications

Collagen/Chitosan Complexes: Preparation, Antioxidant Activity, Tyrosinase Inhibition Activity, and Melanin Synthesis

Collagen/Chitosan Complexes: Preparation, Antioxidant Activity, Tyrosinase Inhibition Activity, and Melanin Synthesis

Influence of Transitional Metals Doping on Conductivity of Collagen Lyophilisate and Elastin

On the electrical properties of collagen macromolecule solutions: Role of collagen-water interactions

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