Towards an Efficient Protocol for the Determination of Triterpenic Acids in Olive Fruit: A Comparative Study of Drying and Extraction Methods

2011 ◽  
Vol 23 (5) ◽  
pp. 444-449 ◽  
Author(s):  
Vlasios Goulas ◽  
George A. Manganaris
Keyword(s):  
Comparative Study ◽  
Extraction Methods ◽  
Olive Fruit ◽  
Triterpenic Acids

Comparative study of two methods (hexane extraction and NMR) for the determination of oil content in an individual olive fruit

2013 ◽  
Vol 115 (9) ◽  
pp. 1070-1077 ◽  
Author(s):  
Adeline Deblangey ◽  
Jean-Michel Roger ◽  
Bernard Palagos ◽  
Gilbert Grenier ◽  
Ryad Bendoula
Keyword(s):  
Comparative Study ◽  
Oil Content ◽  
Hexane Extraction ◽  
Olive Fruit

Comparative study of extraction methods for the determination of PAHs from contaminated soils and sediments

Chemosphere ◽  
2002 ◽  
Vol 48 (9) ◽  
pp. 993-1001 ◽  
Author(s):  
Y.F Song ◽  
X Jing ◽  
S Fleischmann ◽  
B.-M Wilke
Keyword(s):  
Comparative Study ◽  
Contaminated Soils ◽  
Extraction Methods ◽  
Soils And Sediments

A comparative study of two ionization techniques in gas chromatography-mass spectrometric determination of sterenes in olive oil

2016 ◽  
Vol 34 (4) ◽  
pp. 429
Author(s):  
Xueyuan WEI ◽  
Weijian SHEN ◽  
Keyao YU ◽  
Jian ZHANG ◽  
Huiyuan LU ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Comparative Study ◽  
Olive Oil ◽  
Mass Spectrometric ◽  
Mass Spectrometric Determination

Comparison of Extraction Methods for the Determination of Vitamin B1 and B3 in Foods

2020 ◽  
Vol 49 (8) ◽  
pp. 822-828
Author(s):  
Jimin Yoon ◽  
Naeun Kim ◽  
Ahyeong Jeon ◽  
Jihyun Kwon ◽  
Sang-Hoon Lee ◽  
...  
Keyword(s):  
Vitamin B1 ◽  
Extraction Methods

Determination of Pyridostigmine Bromide in Presence of its Related Impurities by Four Modified Classical Least Square Based Models: A Comparative Study

2020 ◽  
Vol 17 (1) ◽  
pp. 87-94
Author(s):  
Ibrahim A. Naguib ◽  
Fatma F. Abdallah ◽  
Aml A. Emam ◽  
Eglal A. Abdelaleem
Keyword(s):  
Comparative Study ◽  
Least Squares ◽  
Orthogonal Projection ◽  
Predictive Ability ◽  
Least Square ◽  
Projection To Latent Structures ◽  
Preprocessing Method ◽  
Spectral Residual ◽  
Latent Structures

: Quantitative determination of pyridostigmine bromide in the presence of its two related substances; impurity A and impurity B was considered as a case study to construct the comparison. Introduction: Novel manipulations of the well-known classical least squares multivariate calibration model were explained in detail as a comparative analytical study in this research work. In addition to the application of plain classical least squares model, two preprocessing steps were tried, where prior to modeling with classical least squares, first derivatization and orthogonal projection to latent structures were applied to produce two novel manipulations of the classical least square-based model. Moreover, spectral residual augmented classical least squares model is included in the present comparative study. Methods: 3 factor 4 level design was implemented constructing a training set of 16 mixtures with different concentrations of the studied components. To investigate the predictive ability of the studied models; a test set consisting of 9 mixtures was constructed. Results: The key performance indicator of this comparative study was the root mean square error of prediction for the independent test set mixtures, where it was found 1.367 when classical least squares applied with no preprocessing method, 1.352 when first derivative data was implemented, 0.2100 when orthogonal projection to latent structures preprocessing method was applied and 0.2747 when spectral residual augmented classical least squares was performed. Conclusion: Coupling of classical least squares model with orthogonal projection to latent structures preprocessing method produced significant improvement of the predictive ability of it.

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