Determination of seed content in red pepper powders by 1 H NMR and second‐derivative FT‐IR spectroscopy combined with statistical analyses

2022 ◽  
Author(s):  
Yuri Choi ◽  
Junyoung Hong ◽  
Byung Hee Kim ◽  
Sangdoo Ahn
Keyword(s):  
Ir Spectroscopy ◽  
Statistical Analyses ◽  
Red Pepper ◽  
Second Derivative ◽  
H Nmr ◽  
Seed Content ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Electrochemically Synthesis and Characterization of Copolymers Based on 1, 4-Diethoxybenzene and 3, 4-Ethylenedioxythiophene

2011 ◽  
Vol 335-336 ◽  
pp. 989-993
Author(s):  
Mi Ouyang ◽  
Zhen Wei Yu ◽  
Yi Xu ◽  
Yu Jian Zhang ◽  
Cheng Zhang
Keyword(s):  
Cyclic Voltammetry ◽  
Ir Spectroscopy ◽  
Feed Ratio ◽  
Synthesis And Characterization ◽  
Monomer Mixture ◽  
Long Wavelength ◽  
H Nmr ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Copolymers based on 1, 4-diethoxybenzene (DEB) and 3, 4-ethylenedioxythiophene (EDOT) were electrochemically synthesized and characterized. The structures of the copolymers were established by 1H NMR and FT-IR spectroscopy. The results indicated the final product was a copolymer instead of a blend or a composite. The physical properties were systematically investigated by cyclic voltammetry, UV-vis absorption and fluorescence. The PL maximum of copolymers presented obviously red-shift to long wavelength as the feed ratio of EDOT in monomer mixture increased.

Applications of Diffuse Reflectance FT-IR to Pigment Photodecomposition in Paint

1982 ◽  
Vol 36 (2) ◽  
pp. 155-157 ◽  
Author(s):  
D. B. Chase ◽  
R. L. Amey ◽  
W. G. Holtje
Keyword(s):  
Ir Spectroscopy ◽  
Infrared Spectra ◽  
Diffuse Reflectance ◽  
Spectral Subtraction ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Diffuse reflectance FT-IR spectroscopy is used to obtain infrared spectra of paints directly on paper panels. The binder contribution to the spectrum can be effectively eliminated by spectral subtraction and the spectra of photodecomposition products are obtained. Comparison with reference spectra allows the determination of the photodecomposition mechanism.

Reagentless determination of glucose and other constituents in blood by ATR-FT-IR-spectroscopy.

1989 ◽  
Vol 35 (9) ◽  
pp. 1854-1856 ◽  
Author(s):  
J D Kruse-Jarres ◽  
G Janatsch ◽  
U Gless
Keyword(s):  
Ir Spectroscopy ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Determination of Spore Inactivation during Thermal and Pressure-Assisted Thermal Processing Using FT-IR Spectroscopy

2006 ◽  
Vol 54 (26) ◽  
pp. 10300-10306 ◽  
Author(s):  
Anand Subramanian ◽  
Juhee Ahn ◽  
V. M. Balasubramaniam ◽  
Luis Rodriguez-Saona
Keyword(s):  
Ir Spectroscopy ◽  
Thermal Processing ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Determination of the conformations of intramolecular DNA triple helices by FT-IR spectroscopy: effect of loop length

1995 ◽  
Vol 372 (2-3) ◽  
pp. 241-247 ◽  
Author(s):  
Ye Fang ◽  
Chunli Bai ◽  
Ying Wei ◽  
Youqi Tang ◽  
Shwu-Bin Lin ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Loop Length ◽  
Ft Ir ◽  
Triple Helices ◽  
Ft Ir Spectroscopy

Determination of the Integrated Molar Absorptivity for C-ONO and C-NO2 Groups, Using FT-IR Spectroscopy

1986 ◽  
Vol 40 (7) ◽  
pp. 1068-1069 ◽  
Author(s):  
M. S. Akhter ◽  
A. R. Chughtai ◽  
D. M. Smith
Keyword(s):  
Ir Spectroscopy ◽  
Molar Absorptivity ◽  
Ft Ir ◽  
Ft Ir Spectroscopy
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