کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9756953 | 1495289 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Collagen absorption bands in heated and rehydrated dentine
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The objective of this work is identifying changes in the collagen bands in heated and rehydrated dentine. We use bovine dentine slices that were heated in oven between 100 and 300 °C. The sample hydration was conducted in sodium chloride solution at 0.9 wt.%; the spectra were acquired by a Fourier transform infrared spectrometer in the spectral range of 4000-400 cmâ1. Our results show a temperature range (T â¤Â 175 °C) where the dentinal collagen can be partially denatured and reverted to initial conformation; a second region (175 °C < T â¤Â 225 °C) where this process occurs partially and a third region (T > 225 °C) where the collagen is denatured and no reversion is observed after rehydration. This work identifies an important characteristic that dentinal collagen can assume when the tissue is heated and rehydrated; these results indicate the denaturation temperature of dentinal collagen to be near 175-200 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 62, Issues 4â5, December 2005, Pages 1045-1049
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 62, Issues 4â5, December 2005, Pages 1045-1049
نویسندگان
Luciano Bachmann, Anderson S.L. Gomes, Denise M. Zezell,