Use of Raman spectroscopy for determining erucic acid content in canola oil

Velioglu, Serap Durakli; Temiz, Havva Tümay; Ercioglu, Elif; Velioğlu, Hasan Murat; Topçu, Ali; Boyaci, İsmail Hakkı

doi:10.1016/j.foodchem.2016.10.044

Cited by 33 publications

(7 citation statements)

References 22 publications

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“…However, physical and chemical analysis methods are not accurate, require high degree technical expertise, and can only determine whether the sample is adulterated without finding out which specific component is adulterated. Spectral methods, e.g., Nuclear Magnetic Resonance Spectroscopy (NMR) [ 7 ], Raman [ 8 ], Fourier Transform Infrared (FTIR) [ 9 ], and Fluorescence [ 10 ], were shown to be useful for detection and quantification of adulteration in oil. However, their data analysis requires specialized software and complex algorithms which are difficult for common users to master.…”

Section: Introductionmentioning

confidence: 99%

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Detection of Adulteration in Canola Oil by Using GC-IMS and Chemometric Analysis

Chen

et al. 2018

International Journal of Analytical Chemistry

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The aim of the present study was to detect adulteration of canola oil with other vegetable oils such as sunflower, soybean, and peanut oils and to build models for predicting the content of adulterant oil in canola oil. In this work, 147 adulterated samples were detected by gas chromatography-ion mobility spectrometry (GC-IMS) and chemometric analysis, and two methods of feature extraction, histogram of oriented gradient (HOG) and multiway principal component analysis (MPCA), were combined to pretreat the data set. The results evaluated by canonical discriminant analysis (CDA) algorithm indicated that the HOG-MPCA-CDA model was feasible to discriminate the canola oil adulterated with other oils and to precisely classify different levels of each adulterant oil. Partial least square analysis (PLS) was used to build prediction models for adulterant oil level in canola oil. The model built by PLS was proven to be effective and precise for predicting adulteration with good regression (R2>0.95) and low errors (RMSE ≤ 3.23).

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Section: Introductionmentioning

confidence: 99%

“…Most of the previous reports on canola oil analysis mainly focused on the adulteration detection and main component quantification of oil species [ 8 , 26 ], with few studies performed on aroma differentiation. Odour is an important quality criterion for edible vegetable oil.…”

Section: Introductionmentioning

confidence: 99%

Detection of Adulteration in Canola Oil by Using GC-IMS and Chemometric Analysis

Chen

et al. 2018

International Journal of Analytical Chemistry

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“…A shoulder around 1250 cm −1 assigned to C−H vibration is observed for QT-400C and QT-500C. 27 For QT-300C, a series of bands at 1260, 1305, and 1742 cm −1 are, respectively, attributed to the �C−H deformation of cis alkenes, the C−H deformation of −CH 2 and the C�O vibration of ester, 28 further proving rapeseed oil partially retained in QT-300C.…”

Section: Xrd and Ft-irmentioning

confidence: 89%

Effect of Liquid Passivation on the Oxidation Resistance and Hydrodesulfurization Activity of the NiMoS_x/Al₂O₃ Catalyst

Wen,

He,

et al. 2024

Energy Fuels

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Toluene and rapeseed oil were, respectively, used to passivate a commercial oxidic NiMo/Al 2 O 3 hydrotreating catalyst to prevent the sulfurized catalyst from oxidation and reduce the activity loss. The passivation at 400 and 500 °C by rapeseed oil can form carbon deposits with an amorphous-like graphite structure on the catalyst; however, passivation at 300 °C forms less carbon deposits. The high temperature facilitates carbon deposits with bigger size and more defects. After sulfurization and air exposure for 7 days, the oxidation degrees of Mo and Ni sulfides in the catalyst determined by TG are, respectively, decreased by 82.7 and 59.3% and 83.8 and 79.1% after 400 and 500 °C passivation. The rate constants of dibenzothiophene hydrodesulfurization of the initial sulfurized catalysts without passivation and passivated at 400 and 500 °C are 1.46, 1.49, and 0.83 mmol g −1 h −1 , respectively. The enhanced activity at 400 °C is ascribed to shorter MoS 2 slabs and the formation of Mo 2 C. However, the inert NiAl 2 O 4 formed at 500 °C causes significantly decreased activity. After 7 days of air exposure, the rate constants of catalysts without passivation and passivated at 400 °C are 1.15 and 1.40 mmol g −1 h −1 , respectively. The carbon deposits produced by passivation with rapeseed oil at 400 °C could effectively inhibit oxidation and reduce the activity loss, which is promising for ex situ sulfurized hydrotreating catalysts.

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“…were carefully washed to remove any foreign matter, dried to the necessary moisture level, and then crushed by a blender. A conventional method of oil extraction was used [ 23 ]. The collected oil was dried over anhydrous sodium sulfate, the mass of oil was determined using the gravimetric method, and the oil was then stored in dark brown bottles at −20 °C until examination.…”

Section: Methodsmentioning

confidence: 99%

Morphological Formation, Fatty Acid Profile, and Molecular Identification of Some Landraces of Ethiopian Brassica as a Promising Crop to Support Breeding Programs

Khalaf

Al-Aziz

Ali

et al. 2021

Plants

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There has been an increased interest in oilseed crops for agro-industry research and development breeding programs to secure sustainable food and agriculture. The introgression of exotic genotypes of oilseed Brassica into cultivated relatives is inevitable in the genetic improvement of oilseed crops. This experimental attempt aimed to characterize the morphological and molecular basis for the identification and characterization of some Brassica genotypes. Fatty acid profile, yield, and morphology are under genetic control and can be used to identify genotypes. Characterization and identification were fulfilled for five accessions from Brassica spp. Plant height, height of first branch, number of branches and pods per plant, seed yield per plant, average pod length, number of seeds per pod, protein and oil contents (%), and fatty acid profile were examined. Besides, the relationship between seed yield and seed yield-contributing characteristics was estimated, as well as the phylogenetic relationship of the internal transcribed spacer (ITS). The genotypes varied significantly for all examined traits, taking into account the most important traits: seed yield per plant and oil content. For example, oil content in the samples ranged between 41.1 and 49.3%. Path analysis results showed a high and positive direct effect between each number of primary branches and the number of pods per plant with seed yield per plant (0.48). The morphological and molecular observations suggest that the Fay1, Fay3, Fay4, and Fay6 accessions belong to Brassica rapa, while Fay2 belongs to Brassica carinata. It can be concluded based on the present findings that the Fay3 genotype with the highest oil content and the lowest erucic acid content compared to the other genotypes can be proposed as a potential donor for future breeding programs for oil production and quality, while Fay1 can be utilized as donor to increase the seed yield per plant.

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Use of Raman spectroscopy for determining erucic acid content in canola oil

Cited by 33 publications

References 22 publications

Detection of Adulteration in Canola Oil by Using GC-IMS and Chemometric Analysis

Detection of Adulteration in Canola Oil by Using GC-IMS and Chemometric Analysis

Effect of Liquid Passivation on the Oxidation Resistance and Hydrodesulfurization Activity of the NiMoS_x/Al₂O₃ Catalyst

Morphological Formation, Fatty Acid Profile, and Molecular Identification of Some Landraces of Ethiopian Brassica as a Promising Crop to Support Breeding Programs

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Use of Raman spectroscopy for determining erucic acid content in canola oil

Cited by 33 publications

References 22 publications

Detection of Adulteration in Canola Oil by Using GC-IMS and Chemometric Analysis

Detection of Adulteration in Canola Oil by Using GC-IMS and Chemometric Analysis

Effect of Liquid Passivation on the Oxidation Resistance and Hydrodesulfurization Activity of the NiMoSx/Al2O3 Catalyst

Morphological Formation, Fatty Acid Profile, and Molecular Identification of Some Landraces of Ethiopian Brassica as a Promising Crop to Support Breeding Programs

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Effect of Liquid Passivation on the Oxidation Resistance and Hydrodesulfurization Activity of the NiMoS_x/Al₂O₃ Catalyst