Comparative spectral analysis of commercial fuel-ethanol blends using a low-cost prototype FT-Raman spectrometer

A low-cost fiber-optic probe was constructed and used to couple an FT-Raman spectrometer to a differential scanning calorimeter (DSC). The utility of this system is demonstrated by the investigation of the different phases of ammonium nitrate.

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Application of low-cost algal nitrogen source feeding in fuel ethanol production using high gravity sweet potato medium

Journal of Biotechnology ◽

10.1016/j.jbiotec.2012.02.008 ◽

2012 ◽

Vol 160 (3-4) ◽

pp. 229-235 ◽

Cited By ~ 13

Author(s):

Yu Shen ◽

Jin-Song Guo ◽

You-Peng Chen ◽

Hai-Dong Zhang ◽

Xu-Xu Zheng ◽

...

Keyword(s):

Ethanol Production ◽

Nitrogen Source ◽

Sweet Potato ◽

Low Cost ◽

Fuel Ethanol ◽

High Gravity

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Identification of Unique Aldehyde Dimers in Sorghum Wax Recovered after Fermentation in a Commercial Fuel Ethanol Plant

Journal of the American Oil Chemists Society ◽

10.1002/aocs.12424 ◽

2020 ◽

Vol 97 (12) ◽

pp. 1299-1308

Author(s):

Robert A. Moreau ◽

Megan E. Sharma ◽

Alberto Nuñez ◽

Charles A. Mullen ◽

Michael J. Powell ◽

...

Keyword(s):

Fuel Ethanol ◽

Sorghum Wax ◽

Ethanol Plant ◽

Commercial Fuel

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Structural, vibrational (FT-IR and FT-Raman) and UV–Vis spectral analysis of 1-phenyl-3-(1,2,3-thiadiazol-5-yl)urea by DFT method

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy ◽

10.1016/j.saa.2012.03.084 ◽

2012 ◽

Vol 95 ◽

pp. 331-340 ◽

Cited By ~ 11

Author(s):

C. Meganathan ◽

S. Sebastian ◽

I. Sivanesan ◽

Keun Woo Lee ◽

Byoung Ryong Jeong ◽

...

Keyword(s):

Spectral Analysis ◽

Dft Method ◽

Ft Ir ◽

Ft Raman

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First Use of Handheld Raman Spectroscopy to Analyze Omega-3 Fatty Acids in Intact Fish Oil Capsules

Applied Spectroscopy ◽

10.1177/0003702819877415 ◽

2019 ◽

Vol 74 (3) ◽

pp. 365-371 ◽

Cited By ~ 1

Author(s):

Daniel Patrick Killeen ◽

Asli Card ◽

Keith Christopher Gordon ◽

Nigel Brian Perry

Keyword(s):

Fatty Acids ◽

Fish Oil ◽

Methyl Esters ◽

Gas Chromatography Mass Spectrometry ◽

Omega 3 Fatty Acids ◽

Least Squares Regression ◽

Omega 3 ◽

Raman Spectrometer ◽

Mean Square Errors ◽

Ft Raman

Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are commercially important omega-3 fatty acids found in fish oils. Here we demonstrate that a handheld Raman spectrometer can be used to quantitate these compounds in intact fish oil capsules, avoiding oxidizing risk. Partial least squares regression models were prepared by relating Raman spectral variance to EPA and DHA concentrations determined using gas chromatography–mass spectrometry (GC-MS) analysis of fatty acid methyl esters in 15 commercial samples containing 145–473 mg g−1 EPA and 101–260 mg·g−1 DHA. Handheld Fourier transform (FT)-Raman models had root mean square errors of cross-validation of 38 mg g−1, 24 mg g−1, and 32 mg·g−1 for EPA, DHA, and EPA+DHA, respectively. Models generated from a benchtop FT-Raman spectrometer had corresponding errors of 32 mg·g−1, 22 mg·g−1, and 26 mg·g−1. By comparison, average standard deviations from triplicate GC-MS analyses were 11 mg·g−1 for EPA and 9 mg·g−1 for DHA.

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