Methanol-Water-Dependent Structural Changes of Regenerated Silk Fibroin Probed by Terahertz Spectroscopy

Wu, Xu, Xiaodong Wu, Bin Yang, Min Shao, and Guojin Feng. "EXPRESS: Methanol-Water-Dependent Structural Changes of Regenerated Silk Fibroin Probed by Terahertz Spectroscopy." Applied Spectroscopy (2017): 0003702817706368.

Abstract 

The mechanism of β-sheet crystallization in silk fibroin remains unclear, due to the 
incomplete information of protein assembly and structural state. The emerging terahertz 
(THz) spectroscopy (< 10THz) has been taken as an important tool to detect new aspects of biomolecular structure and is used for the first time to analyze the methanol–water (MeOH) induced structural changes of Bombyx mori silk fibroin. Mid-infrared spectroscopy (IR) and ...

for full paper see http://journals.sagepub.com/doi/pdf/10.1177/0003702817706368

... for 3 min. Lower-frequency THz spectra (below 3 THz) were collected using two THz time-domain spectroscopies: CIP-TDS (Daheng Optics Co.) and TPS spectra 3000 (TeraViewLtd.). In the ... The data was collected by the software Spectra 1.17.6 (TeraView Ltd.). ...

for more information about TeraView see http://www.azom.com/equipment-details.aspx?EquipID=4411