scholarly journals Determination of trans Fat in Selected Fast Food Products and Hydrogenated Fats of India Using Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR) Spectroscopy

2017 ◽  
Vol 66 (3) ◽  
pp. 251-257 ◽  
Author(s):  
Mohd Umar Khan ◽  
Mohammad Fahimul Hassan ◽  
Abdul Rauf
Keyword(s):  
Fourier Transform ◽  
Ftir Spectroscopy ◽  
Fast Food ◽  
Fourier Transform Infrared ◽  
Food Products ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Hydrogenated Fats

scholarly journals An indirect analytical approach based on ATR-FTIR spectroscopy for determining the FFA content in vegetable oils

RSC Advances ◽  
2020 ◽  
Vol 10 (40) ◽  
pp. 24073-24078
Author(s):  
Yaoyao Dong ◽  
Shaoxia Shi ◽  
Qi Li ◽  
Lingyan Zhang ◽  
Xiuzhu Yu
Keyword(s):  
Fourier Transform ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Ftir Spectroscopy ◽  
Vegetable Oils ◽  
Analytical Approach ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Novel Approach

In this study, we developed a novel approach for determining a free fatty acid (FFA) in vegetable oils using attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy.

Chemometric Approach to a Rapid Attenuated Total Reflection Fourier Transform Infrared Analysis of Complex Heroin-Based Mixtures

2020 ◽  
pp. 000370282096971
Author(s):  
Nataša Radosavljević Stevanović ◽  
Milena Jovanović ◽  
Federico Marini ◽  
Slavica Ražić
Keyword(s):  
Principal Component Analysis ◽  
Fourier Transform ◽  
Principal Component ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Illegal Market ◽  
Ft Ir

Heroin is one of the most frequently seized drugs in Southeastern Europe. Due to the position in the Balkan route, the Republic of Serbia keeps important role in suppression of the trafficking of heroin for domestic and foreign illegal market. This research is aimed to provide a good scientific approach in the field of seized heroin analysis. Two different forms of heroin are present in the illegal market, mostly in mixtures with typical “cutting” agents: caffeine, paracetamol, and sugars. It was observed that the quantity of pure heroin in seized samples slightly increases from year to year. The aim of this study was to produce a reliable and fast procedure for classification of illicit heroin samples and determination of the concentration range of heroin in the samples. For that purpose, the attenuated total reflection Fourier transform infrared spectroscopy (ATR FT-IR) technique was used and combined with such chemometric methods as principal component analysis, cluster analysis, and partial least squares. Principal component analysis (PCA) as an unsupervised model was used for exploratory purposes to identify trends, similarities, and differences between samples by reducing the dimensionality of the data. The cluster classification of examined samples turned out to be extremely useful to evaluate the possibilities of the ATR FT-IR technique to classify the samples appropriately into the patterns, the constituted clusters. Additionally, partial least square was the suitable method for the purpose of determination of the heroin hydrochloride concentration range in examined samples. It is proved that the joined application of spectroscopy and chemometrics can be extremely convenient and useful for forensic and drugs control laboratories.

In situ attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy combined with non-negative matrix factorization for investigating the synthesis reaction mechanism of 3-amino-4-amino-oxime furazan

2018 ◽  
Vol 10 (48) ◽  
pp. 5817-5822 ◽  
Author(s):  
Tianlong Zhang ◽  
Ting He ◽  
Chunhua Yan ◽  
Xinyu Gao ◽  
Junxiu Ma ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Reaction Mechanism ◽  
Ftir Spectroscopy ◽  
Matrix Factorization ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Synthesis Reaction ◽  
Non Negative Matrix Factorization

In situ ATR-FTIR combined with non-negative matrix factorization for investigating the synthesis reaction mechanism of 3-amino-4-aminoximefurazan.

scholarly journals Reagent-free total protein quantification of intact extracellular vesicles by attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy

2020 ◽  
Vol 412 (19) ◽  
pp. 4619-4628 ◽  
Author(s):  
Veronika Szentirmai ◽  
András Wacha ◽  
Csaba Németh ◽  
Diána Kitka ◽  
Anita Rácz ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Ftir Spectroscopy ◽  
Extracellular Vesicles ◽  
Total Protein ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Protein Quantification ◽  
Attenuated Total Reflection

scholarly journals Attenuated Total Reflection-Fourier Transform Infrared (ATR-FTIR) Spectroscopy Analysis of Saliva for Breast Cancer Diagnosis

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Izabella C. C. Ferreira ◽  
Emília M. G. Aguiar ◽  
Alinne T. F. Silva ◽  
Letícia L. D. Santos ◽  
Léia Cardoso-Sousa ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Fourier Transform ◽  
Ftir Spectroscopy ◽  
Cancer Patients ◽  
Sensitivity And Specificity ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Breast Cancer Patients ◽  
Potential Use

Saliva biomarkers using reagent-free biophotonic technology have not been investigated as a strategy for early detection of breast cancer (BC). The attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy has been proposed as a promising tool for disease diagnosis. However, its utilization in cancer is still incipient, and currently saliva has not been used for BC screening. We have applied ATR-FTIR onto saliva from patients with breast cancer, benign breast disease, and healthy matched controls to investigate its potential use in BC diagnosis. Several salivary vibrational modes have been identified in original and second-derivative spectra. The absorbance levels at wavenumber 1041 cm−1 were significantly higher (p<0.05) in saliva of breast cancer patients compared with those of benign patients, and the ROC curve analysis of this peak showed a reasonable accuracy to discriminate breast cancer from benign and control patients. The 1433–1302.9 cm−1 band area was significantly higher (p<0.05) in saliva of breast cancer patients than in control and benign patients. This salivary ATR-FTIR spectral area was prevalidated as a potential diagnostic biomarker of BC. This spectral biomarker was able to discriminate human BC from controls with sensitivity and specificity of 90% and 80%, respectively. Besides, it was able to differentiate BC from benign disease with sensitivity and specificity of 90% and 70%, respectively. Briefly, for the first time, saliva analysis by ATR-FTIR spectroscopy has demonstrated the potential use of salivary spectral biomarkers (1041 cm−1 and 1433–1302.9 cm−1) as a novel alternative for noninvasive BC diagnosis, which could be used for screening purposes.

scholarly journals Attenuated total reflection Fourier‐transform infrared ( ATR ‐ FTIR ) spectroscopy to diagnose osteoarthritis in equine serum

2019 ◽  
Vol 52 (1) ◽  
pp. 46-51 ◽  
Author(s):  
M. Paraskevaidi ◽  
P. D. Hook ◽  
C. L. M. Morais ◽  
J. R. Anderson ◽  
R. White ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Ftir Spectroscopy ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Attenuated Total Reflection
Sign in / Sign up

Export Citation Format

Share Document