Rapid method for determining malondialdehyde as secondary oxidation product in palm olein system by Fourier transform infrared spectroscopy

Mirghani, Mohamed Elwathig Saeed; Man, Y. B. Che; Jinap, S.; Baharin, Badlishah Sham; Bakar, Jamilah

doi:10.1002/pca.641

Cited by 23 publications

(19 citation statements)

References 28 publications

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“…This effect could be ascribed to CH stretching of the aldehyde groups. This agrees with Mirghani, Man, Jinap, Baharin, & Bakar (2002), who reported several bands in the 2832 and 2695-2699 cm -1 frequency regions in a palm olein system as a result of the accumulation of malonaldehyde and other secondary oxidation products. In addition, according to hydroperoxides may also be converted into alcohols and hydroperoxide derivatives, which are recorded at frequencies above 3500 cm -1 .…”

Section: Region Between 2700 and 3700 CM -1supporting

confidence: 93%

Formulation and stability of biodegradable films made from cod gelatin and sunflower oil blends

2009

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Sunflower oil was added to cod gelatin in proportions of 0, 0.3, 0.6, and 1% to improve the hydrophobic properties of the resulting films and decrease water vapor permeability and the soluble matter content. Mechanical and optical properties were evaluated to determine the influence of the added oil and the stability of the films during storage for one month. Adding oil increased film thickness, whiteness, and optical absorbance and decreased transparency; all these properties held stable over the storage period. Fourier transform infrared (FTIR) spectra revealed some lipid-protein interactions (hydrogen bonds, ester formation) and early oil oxidation. By the end of storage oxidation was well advanced and secondary oxidation products were present. Adding oil in any quantity decreased the puncture force but not the puncture deformation. Stability of these two mechanical properties decreased during storage in the films that contained ≥0.6 % added oil. Water vapor permeability did not decrease when oil was added and even increased with storage time, though adding oil yielded more insoluble films due to lipid-protein interactions.

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Section: Region Between 2700 and 3700 CM -1supporting

confidence: 93%

Formulation and stability of biodegradable films made from cod gelatin and sunflower oil blends

2009

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“…The greater the distance between the clusters the greater is the difference in their chemical composition. This multivariate approach has been previously reported to classify oils based on type using a full resolution benchtop MIR [19]. SIMCA was able to use the handheld spectra to classify the oils, generating distinct clusters (Fig.…”

Section: Classification and Quantitative Analysis By Atr-ir Spectroscopymentioning

confidence: 98%

“…Research efforts by Dr. Fredrik R. van de Voort and Dr. Maria D. Guillén in this topic are worth mentioning and their reviews summarize the developments and the applications in MIR spectroscopic analysis of edible oils [11,12]. One primary area of application is determination of oil quality parameters such as anisidine value [10], peroxide value [13], acid value [14,15], solid fat index [16], active oxygen method [17], and malondialdehyde and thiobarbituric acid-reactive substance [18,19] using mid-infrared spectroscopy. Analysis of characteristics related to the structure and composition of fatty acids such as cis and trans [20,21], iodine value [7,22], and saponification number [22] by MIR spectroscopy is another topic that has been focused.…”

Section: Introductionmentioning

confidence: 98%

Application of a Handheld Portable Mid‐Infrared Sensor for Monitoring Oil Oxidative Stability

Allendorf

Subramanian

Rodríguez-Saona

2011

J Americ Oil Chem Soc

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This study evaluated the capabilities of a handheld mid-infrared (MIR) spectrometer combined with multivariate analysis to characterize oils, monitor chemical processes occurring during oxidation, and to determine fatty acid composition. Vegetable oils (corn, peanut, sunflower, safflower, cottonseed, and canola) were stored at 65°C for 30 days to accelerate oxidation reactions. Aliquots were drawn at 5 day intervals and analyzed by benchtop and portable handheld mid-infrared devices (4,000-700 cm -1 ) and reference methods (IUPAC 2301 [1], 2302 [1]; AOCS Cd 8-58 [2]; and Shipe 1979 [3]). PLSR and soft independent modeling of class analogy (SIMCA) models were developed for oil classification and estimation of oil stability parameters. Models developed from MIR spectra obtained with a benchtop spectrometer equipped with a 3-bounce ATR device resulted in superior discriminative performances for classifying oils as compared to those obtained from handheld spectra (singlebounce ATR). Models developed from reference tests and handheld spectra showed prediction errors (SECV) of 1 meq/kg for peroxide value, 0.09% for acid value and 2% for determination of unsaturated fatty acids in different oils. Spectral regions *3,012-2,850 cm -1 (C-H stretching bands/shoulders of fatty acids), *1,740 cm -1 (C=O stretching of esters), and *1,114 cm -1 (-C-O stretching) were found to be important for prediction. Handheld-FTIR instruments combined with multivariate-analysis showed promise for determination of oil quality parameters.Portability and ease-of-use makes the handheld device a great alternative to traditional methods.

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“…The mean spectrum of CBD spiked by water is shown in the correlation spectrum (Fig. 2), which showed the -OH stretching absorption of H-bonding hydroxyl groups at the 3,075-3700 cm -1 region, however, not for the varying amount of the -OH-containing compounds, such as monoand diacylglycerols, free fatty acids and hydroperoxides as in oxidized oil samples, if any [21][22][23][24]. The 1,500-1,700 cm -1 region in the correlation spectrum (Fig.…”

Section: Absorption Bands Of Watermentioning

confidence: 99%

Rapid Method for the Determination of Moisture Content in Biodiesel Using FTIR Spectroscopy

Mirghani

Kabbashi

Alam

et al. 2011

J Americ Oil Chem Soc

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A new, rapid, and direct method was developed for the determination of moisture content in biodiesel produced from various types of oils using Fourier transform infrared (FTIR) spectroscopy with an attenuated total reflectance (ATR) element. Samples of biodiesels used in this study were produced using sludge palm oil (SPO). The calibration set was prepared by spiking double‐distilled water into dried biodiesel samples in ratios (w/w) between 0 and 10% moisture. Absorbance values from the wavelength regions 3,700–3,075 and 1,700–1,500 cm−1, and the partial least square (PLS) regression method were used to derive a FTIR spectroscopic calibration model for moisture content in biodiesel samples. The coefficient of determinations (R2) for the models was computed by comparing the results obtained from FTIR spectroscopy against the values of the moisture concentrations (%) determined using the American Oil Chemists’ Society (AOCS) oven method Ca 2d‐25. Same comparison was done using International Union of Pure and Applied Chemistry (IUPAC) distillation method 2.602. R2 was 0.9793 and 0.9700 using AOCS and IUPAC methods, respectively. The standard error (SE) of calibration was 1.84. The calibration model was cross validated within the same set of samples, and the standard deviation (SD) of the difference for repeatability (SDDr) and accuracy (SDDa) of the FTIR method was determined. With its speed and ease of data manipulation, FTIR spectroscopy is a useful alternative method to other methods for rapid and routine determination of moisture content in biodiesel for quality control.

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Rapid method for determining malondialdehyde as secondary oxidation product in palm olein system by Fourier transform infrared spectroscopy

Cited by 23 publications

References 28 publications

Formulation and stability of biodegradable films made from cod gelatin and sunflower oil blends

Formulation and stability of biodegradable films made from cod gelatin and sunflower oil blends

Application of a Handheld Portable Mid‐Infrared Sensor for Monitoring Oil Oxidative Stability

Rapid Method for the Determination of Moisture Content in Biodiesel Using FTIR Spectroscopy

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