scholarly journals Rapid Determination of Acid Value of Edible Oils via FTIR Spectroscopy Using Infrared Quartz Cuvette

2019 ◽  
Vol 68 (2) ◽  
pp. 121-129 ◽  
Author(s):  
Keqing Hu ◽  
Zongyao Huyan ◽  
Qiaona Geng ◽  
Xiuzhu Yu
Keyword(s):  
Ftir Spectroscopy ◽  
Edible Oils ◽  
Rapid Determination ◽  
Acid Value

Rapid Determination of Free Fatty Acids in Poultry Feed Lipid Extracts by SB-ATR FTIR Spectroscopy

2007 ◽  
Vol 55 (13) ◽  
pp. 4928-4932 ◽  
Author(s):  
S. T. H. Sherazi ◽  
S. A. Mahesar ◽  
M. I. Bhanger ◽  
F. R. van de Voort ◽  
J. Sedman
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Ftir Spectroscopy ◽  
Rapid Determination ◽  
Poultry Feed

scholarly journals Use of Attenuated Total Reflectance—Fourier Transform Infrared (ATR-FTIR) Spectroscopy in Combination with Multivariate Methods for the Rapid Determination of the Adulteration of Grape, Carob and Mulberry Pekmez

Foods ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 231 ◽  
Author(s):  
Nihal Yaman ◽  
Serap Durakli Velioglu
Keyword(s):  
Fourier Transform ◽  
Ftir Spectroscopy ◽  
Rapid Determination ◽  
Fourier Transform Infrared ◽  
Attenuated Total Reflectance ◽  
Chemometric Methods ◽  
Total Reflectance ◽  
Glucose Syrup ◽  
Model Efficiency

Pekmez, a traditional Turkish food generally produced by concentration of fruit juices, is subjected to fraudulent activities like many other foodstuffs. This study reports the use of Fourier transform infrared spectroscopy (FTIR) in combination with chemometric methods for the detection of fraudulent addition of glucose syrup to traditional grape, carob and mulberry pekmez. FTIR spectra of samples were taken in mid-infrared (MIR) range of 400–4000 cm−1 using attenuated total reflectance (ATR) sample accessory. Partial least squares-discriminant analysis (PLS-DA) and PLS chemometric methods were built for qualitative and quantitative analysis of pekmez samples, respectively. PLS-DA models were successfully used for the discrimination of pure pekmez samples and the adulterated pekmez samples with glucose syrup. Sensitivity and specificity of 100%, and model efficiency of 100% were obtained in PLS-DA models for all pekmez groups. Detection of the adulteration ratio of pekmez samples was also accomplished using ATR-FTIR spectroscopy in combination with PLS. As a result, it was shown that ATR-FTIR spectroscopy along with chemometric methods had a great potential for determination of pekmez adulteration with glucose syrup.

Sweep Co-Distillation Cleanup of Fortified Edible Oils for Determination of Organophosphate and Chlorinated Hydrocarbon Pesticides

1967 ◽  
Vol 50 (3) ◽  
pp. 605-615
Author(s):  
R W Storherr ◽  
Edward J Murray ◽  
I Klein ◽  
Lynn A Rosenberg
Keyword(s):  
Fruits And Vegetables ◽  
Edible Oils ◽  
Rapid Determination ◽  
Organophosphate Pesticides ◽  
Nitrogen Flow ◽  
Distillation Method ◽  
Chlorinated Pesticides ◽  
Chlorinated Hydrocarbon ◽  
The Individual

Abstract The technique of sweep co-distillation developed for organophosphate pesticides in fruits and vegetables was expanded for application to organophosphate and chlorinated hydrocarbon pesticides in edible oils. A modified longer and wider Storherr tube and heating assembly was used in this work and 3 mm diameter glass beads replaced the glass wool packing used in crop work. The work on oils was performed at 248 ± 3°C with a nitrogen flow of 600 ml/min and injection of a sweeping solvent every 3 minutes for 30 minutes. Phosphate pesticides were analyzed by GLC with a potassium thermionic detector and chlorinated pesticides were determined by ECGLC, after a micro Florisil column was used to eliminate extraneous peaks. Recoveries of ten phosphate pesticides from nine edible oils ranged from 74 to 100% at fortification levels of 0.04 to 6.25 ppm; average recoveries for the individual pesticides were 90—99%. Average recoveries for the chlorinated pesticides ranged from a low of 75% for Tedion to a high of 98% for endrin and dieldrin. Sensitivity of 0.01 is readily obtainable for compounds such as parathion and heptachlor cpoxide. The sweep co-distillation method is suitable for the rapid determination of the 14 chlorinated and 10 organophosphate pesticides tested in edible oils

Determination of the peroxide value of edible oils by FTIR spectroscopy using polyethylene films

2015 ◽  
Vol 7 (5) ◽  
pp. 1727-1731 ◽  
Author(s):  
Xiuzhu Yu ◽  
Qinghua Li ◽  
Daijun Sun ◽  
Xiaobin Dong ◽  
Tong Wang
Keyword(s):  
Ftir Spectroscopy ◽  
Peroxide Value ◽  
Edible Oils ◽  
New Technique ◽  
Polyethylene Films ◽  
Sample Support ◽  
A New Technique

A new technique was developed to facilitate the mid-FTIR transmission analysis of viscous edible oils using disposable polyethylene (PE) films as a sample support for the determination of the peroxide value (PV) of the oils.

Improving the determination of moisture in edible oils by FTIR spectroscopy using acetonitrile extraction

2012 ◽  
Vol 135 (2) ◽  
pp. 722-729 ◽  
Author(s):  
Xianghe Meng ◽  
J. Sedman ◽  
F.R. van de Voort
Keyword(s):  
Ftir Spectroscopy ◽  
Edible Oils
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