Fatty Acid Composition, Tocopherols and Beta-Carotene Content in Polish Commercial Vegetable Oils

Rafałowski, Ryszard; Zegarska, Z; Kuncewicz, A.; Borejszo, Zbigniew

doi:10.3923/pjn.2008.278.282

Cited by 31 publications

(25 citation statements)

References 7 publications

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“…In general, the fatty acid compositions of our samples concur with the literature (Strecker et al, 1996;O'Brien, 2004;Codex Stan, 2015;Rafalowski et al, 2008). There were statistically significant differences between the two samples for the sterol composition (Table 2).…”

Section: Fatty Acid Sterol and α-Tocopherol Compositionssupporting

confidence: 79%

“…Clearly during refining, significant losses of a-tocopherol have occurred. Rafalowski et al, (2008) have determined the tocopherol composition of both refined and cold pressed corn oil among ten other oils. They have quantified 27.22, 91.76, and 5.93 mg/100 g oil of a-tocopherol, g-tocopherol and d-tocopherol in the cold pressed sample, while the same tocopherols were quantified in refined oils as 26.11, 44.31, and 0.0 mg/100 g oil, respectively.…”

Section: Fatty Acid Sterol and α-Tocopherol Compositionsmentioning

confidence: 99%

“…In one study (Daugan et al, 2011), the b-carotene content of commercial corn oil was reported as 0.91 ppm. Another study (Rafalowski et al, 2008) reported the b-carotene content of cold pressed corn oil as 3.56 mg/100 g oil, and indicated its absence in the refined oil. Tuberoso et al, (2007) reported the chlorophylls content as 4.9 mg/kg, b-carotene content as 0.9 mg/kg, and TEAC activity to be 2.30 mmol/L for corn oil.…”

mentioning

confidence: 99%

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Cold pressed versus refined winterized corn oils: quality, composition and aroma

Güneşer

Yılmaz

2017

Grasas y Aceites

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SUMMARY:The aims of this study were to characterize and compare cold pressed and fully refined winterized corn oils. Free fatty acidity (FFA), peroxide (PV) and p-anisidin (p-AV) values, saponification number, total carotenoid and phenolic contents of cold pressed corn oils were higher than that of the refined winterized corn oils. Linoleic and oleic acids (approximately 53-54% and 30-31%, respectively) were detected as the major fatty acids in both oil samples. Fifteen different sterols with a majority of β-sitosterol, campesterol, and stigmasterol were quantified in both oil samples. Although phenolic compounds were not quantified in the refined winterized oil samples, some flavonoids (hesperidin, rutin) and phenolic acids (gallic, syringic, rosmaniric and trans-ferulic) were detected in the cold pressed oil samples. This study concludes that cold pressed corn oils could be superior in terms of bioactive compounds but still need some quality improvements for sensory attributes. KEYWORDS:Cold pressing; Corn oil; Nutrition; Refining; Sensory; Volatile RESUMEN: Aceites de maiz prensados en frío Vs. refinado y winterizado: calidad, composición y aroma. Los objetivos de este estudio fueron caracterizar y comparar los aceites de maíz prensados en frío y los totalmente winterizados y refinados. Los valores de acidez libre (FFA), peróxidos (PV) y p-anisidina (p-AV), índice de saponificación, contenido total de carotenoides y compuestos fenólicos de los aceites de maíz prensados en frío fueron superiores a los de los aceites de maíz refinados. Los ácidos linoleico y oleico (aproximadamente 53-54% y 30-31%, respectivamente) fueron los ácidos grasos mayoritarios en ambas muestras de aceite. Quince esteroles diferentes fueron cuantificados en ambos aceites siendo los mayoritarios β-sitosterol, campesterol y estigmasterol. Aunque los compuestos fenólicos no se cuantificaron en las muestras refinadas de aceites winterizados, se detectaron algunos flavonoides (hesperidina, rutina) y ácidos fenólicos (gálico, siríngico, rosmarínico y transferúlico) en muestras de aceite prensado en frío. En este estudio se concluye que los aceites de maíz prensados en frío podrían ser superiores en términos de compuestos bioactivos, pero todavía necesitan algunas mejoras de calidad para los atributos sensoriales.

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Section: Fatty Acid Sterol and α-Tocopherol Compositionssupporting

confidence: 79%

Section: Fatty Acid Sterol and α-Tocopherol Compositionsmentioning

confidence: 99%

mentioning

confidence: 99%

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Cold pressed versus refined winterized corn oils: quality, composition and aroma

Güneşer

Yılmaz

2017

Grasas y Aceites

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“…As can be seen, sunflower-seed oil is free of retinol. It is caused by b-carotene absence in this oil that confirms by chromatographic analysis [35]. The found amount of retinol the linseed oil is probably explained by destruction of b-carotene from linseeds [36] during oil preparation process.…”

Section: Voltammetric Determination Of Retinol In Real Samplessupporting

confidence: 51%

Cyclic Voltammetry of Retinol in Surfactant Media and Its Application for the Analysis of Real Samples

2010

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Retinol is irreversibly oxidized at 790 mV in water 0.1 M LiClO 4 that corresponds to formation of retinal. Effect of surfactant on voltammetric characteristics of retinol oxidation has been evaluated. The calibration graph was linear in the range 29.4-980 mM of retinol with detection limit of 15 mM in presence of 1.1 10 À4 M of sodium dodecyl sulfate. Application of surfactant media leads to decrease of detection limit, enlargement of analytical range for retinol determination and permits analyze retinol in water media. Simple, express and reliable voltammetric approach for determination of retinol in real samples using surfactant media have been developed.

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“…This frequently low effect of processing might be negated on the market as was shown in a recent Polish study with no differences in tocopherol content and pattern between cold pressed and refined rapeseed oils and an even higher tocopherol content of refined versus sunflower oil [23].…”

Section: Methodsmentioning

confidence: 97%

Analysis of carotenoids and vitamin E in selected oilseeds, press cakes and oils

Franke

Fröhlich

Werner

et al. 2010

Euro J Lipid Sci & Tech

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Carotenoids and vitamin E in oils from the market -6 rapeseed and 6 sunflower oils, half of each cold pressed and refined -and in the oils of rape, sunflower, flax and safflower as well as the respective seeds and press cakes from a local oil mill were quantified by HPLC. Furthermore, a photometric determination of carotenoid content was tested and checked against the chromatographic method. In the cold pressed oils minor amounts of xanthophylls (all-E)-lutein and (all-E)-zeaxanthin were determined. With exception of traces of (all-E)-b-carotene in cold-pressed rapeseed oil this provitamin A active compound did not occur. Cold pressed rapeseed oils contained 0.5-1.5 mg total carotenoids/100 g which was manifold the content of the further oils. Vitamin E was found in all vegetable oils at plant-typic tocopherol patterns. The photometric determination of carotenoids resulted in significantly higher concentrations compared to the HPLC. This overestimation bases on the carotenoid pattern which was validated by comparison with known high-carotenoid materials, i.e. maize flour with an abundant amount of xanthophylls and carrots with an abundant amount of carotenes.

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Fatty Acid Composition, Tocopherols and Beta-Carotene Content in Polish Commercial Vegetable Oils

Cited by 31 publications

References 7 publications

Cold pressed versus refined winterized corn oils: quality, composition and aroma

Cold pressed versus refined winterized corn oils: quality, composition and aroma

Cyclic Voltammetry of Retinol in Surfactant Media and Its Application for the Analysis of Real Samples

Analysis of carotenoids and vitamin E in selected oilseeds, press cakes and oils

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