Thermal behavior of fowl feather keratin

Bioscience, Biotechnology, and Biochemistry
Koji TakahashiMakoto Hattori

Abstract

Differential scanning calorimetry (DSC) was applied to elucidate the thermal behavior of fowl feather keratins (barbs, rachis, and calamus) with different morphological features. The DSC curves exhibited a clear and relatively large endothermic peak at about 110-160 degrees C in the wet condition. A considerable decrease in transition temperature with urea and its helical structure content estimated by Fourier transform infrared spectroscopy (FT-IR), and the disappearance of one of the diffraction peaks with heating at 160 degrees C for 30 min, indicated that DSC could be used to evaluate the thermal behavior of keratin. Barbs showed a lower denaturation temperature than rachis and calamus. The pulverized samples showed a slightly higher denaturation temperature than the native samples. In the dry condition, thermal transition occurred in a markedly higher temperature region close to 170-200 degrees C. It is hence concluded that fowl feather keratins have very high thermal stability, and that the elimination of water brings about even greater thermal stability.

References

Sep 1, 1971·Proceedings of the National Academy of Sciences of the United States of America·P N LewisH A Scheraga
Dec 1, 1964·Analytical Biochemistry·R F ITZHAKI, D M GILL
Mar 1, 1951·Annals of the New York Academy of Sciences·R S BEAR, H J RUGO

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Citations

Jan 24, 2006·Bioscience, Biotechnology, and Biochemistry·Masato OginoKoji Takahashi
Dec 30, 2009·Applied Microbiology and Biotechnology·Adriano BrandelliAlessandro Riffel
Aug 14, 2013·Critical Reviews in Biotechnology·Daniel Joner Daroit, Adriano Brandelli
Nov 8, 2016·Acta Biomaterialia·Bin Wang, Marc André Meyers
Nov 9, 2017·Polymers·Ibon AranberriHans-Jürgen Grande
May 11, 2021·3 Biotech·Chaitanya Reddy ChilakamarryBoya Narasaiah
Sep 6, 2011·Biomacromolecules·Aman UllahJianping Wu
Jun 28, 2017··Timothy WendelinJulius Yellowhair

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