Changes of the tocopherol and fatty acid contents in rapeseed oil during refining

Gogolewski, M.; Nogala‐Kałucka, Małgorzata; Szeliga, Mariusz

doi:10.1002/1438-9312(200010)102:10<618::aid-ejlt618>3.3.co;2-y

Cited by 8 publications

(14 citation statements)

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“…As indicated by Gogolewski et al, neutralization and bleaching cause losses of tocopherols in comparison with their amount in crude oil by approx. 10%, while deodorization reduces the amount of tocopherols in comparison with bleached oil by 23%.…”

Section: Attempts To Improve the Rapeseed Valuementioning

confidence: 94%

“…10%, while deodorization reduces the amount of tocopherols in comparison with bleached oil by 23%. Total tocopherol losses during refining exceed 30% . Moreover, it was demonstrated that during refining the loss of δ‐tocopherol was greater than that of the α‐homologue; however in their study Ferrari et al showed the relative proportions of individual tocopherols to be relatively constant during refining.…”

Section: Attempts To Improve the Rapeseed Valuementioning

confidence: 96%

“…The reduction of tocopherol contents during neutralization and bleaching can result from the use of the condensed base in alkaline refining and also from the adsorption of particles by bleaching earth. However, this loss is considerably smaller than the one observed during the final stage of deodorization, resulting from distillation and thermal degradation (temperature: 220–260 °C, pressure about 3–4 hPa) . The level of tocopherol retained in the refined oil may be considered as the most reliable indicator of a properly optimized deodorization process .…”

Section: Attempts To Improve the Rapeseed Valuementioning

confidence: 99%

See 2 more Smart Citations

Current Research Developments on the Processing and Improvement of the Nutritional Quality of Rapeseed (Brassica napus L.)

Beszterda

Nogala‐Kałucka

2019

Euro J Lipid Sci & Tech

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Brassica napus is cultivated largely as a winter or semi‐winter form in Europe and Asia, respectively, whereas spring‐sown rape types are more adapted to the climatic conditions in Canada, northern Europe, and Australia. This plant, the third most important oil crop in the world after maize and oil palm, has had a unique history among those crops that have been targets of breeding and genetic modification. Although agronomy and genetic manipulations of B. napus plants to create seed with substantially no erucic acid content in the seed oil and meal largely free from aliphatic glucosinolates were major breakthroughs, opportunities for further advances in the reduction of antinutritive compounds/enhancement of bioactive compounds, in oil and meal health safety and quality, as well as in agronomic performance and pest resistance, are still greater today than they have ever been. Understanding and application of genetic control for key agronomic traits in B. napus, such as seed oil composition and concentration as well as their environmental interactions, are the main targets, which will underpin the development of the crop for cultivation in an extensive range of environments. It is also needed to improve phytochemical content through traditional breeding programs or through bioengineering of the phenylpropanoid pathway, leading to desirable secondary metabolite accumulation. This paper is a review of modifications (in the field of biotechnology, agronomy, and processing) that have been applied to improve the nutritional value of B. napus L. Practical Applications: This paper has value for people starting their scientific work in the field related to the B. napus biotechnology and nutritional value of vegetable oils. In addition, it is a current compedium of knowledge for people working professionally in the oil industry. Moreover, this article is a cross‐section of the current achievements of genetic engineering in improving the composition of rapeseed and indicates key publications on this subject. Brassica napus L., the third most important oil crop in the world after maize and oil palm, has a unique history among those crops that are targets of breeding and genetic modification. Effective tools of processing, biotechnology, and agronomy are essential to produce rapeseed oil with a high amount of bioactive compounds and continue to be employed in strengthening the product versatility.

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Section: Attempts To Improve the Rapeseed Valuementioning

confidence: 94%

Section: Attempts To Improve the Rapeseed Valuementioning

confidence: 96%

Section: Attempts To Improve the Rapeseed Valuementioning

confidence: 99%

See 1 more Smart Citation

Current Research Developments on the Processing and Improvement of the Nutritional Quality of Rapeseed (Brassica napus L.)

Beszterda

Nogala‐Kałucka

2019

Euro J Lipid Sci & Tech

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“…The negative side of the refining process is a loss of valuable components such as carotenoids, sterols, tocopherols, and polyphenols. Depending on the process parameters, the loss of sterols can be 10–15% (Prior et al, ; Van Hoed et al, ), tocopherols around 30% (Gogolewski et al, ), and polyphenols up to 80% (Szydłowska‐Czerniak et al, ). The loss of polyphenolics during rapeseed oil refining can be directly linked to the loss of 4‐vinylsyringol (4‐vinyl‐2,6‐dimethoxyphenol, canolol), a specific and dominant polyphenolic compound of virgin rapeseed oil (Kraljić et al, ).…”

Section: Introductionmentioning

confidence: 99%

Canolol Dimer, a Biologically Active Phenolic Compound of Edible Rapeseed Oil

Kraljić

Brkan

Škevin

et al. 2019

Lipids

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Rapeseed and its oil are the source of many biologically active substances. From crude rapeseed oil, canolol is isolated and from edible oil its dimer. Herein, we tested the biological activity of those two compounds isolated from the oils by determining their antioxidant capacity and in vitro cytotoxicity on human tumor cell lines. Canolol and its dimer showed antiproliferative activity on both cell lines with IC50 values of 46.45 μM in HeLa, and 51.19 μM in MCF7 cells, respectively. Evaluation of cell death was also done, while the oxygen radical absorbance capacity method confirmed that the canolol dimer has higher antioxidant potential than canolol. Stability of canolol and its dimer under different storage conditions showed that for a longer period of time both compounds should be stored in a freezer, but also that the dimer is more stable against degradation than canolol. Presented results indicate possible applications of canolol and its dimer in the food and pharmaceutical industry as a natural antioxidant and an anticancer agent, respectively.

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“…In fact, natural antioxidants play an important role in the oxidative stability of vegetable oils and are widely used to retard rancidity or deterioration during handling and/or long-term storage [17]. For instance, rapeseed and oilseed radish oils are rich sources of natural tocopherols, especially c-tocopherol, the antioxidant activity of which has been confirmed [18][19][20]. Consequently, these raw materials have been used for biodiesel production and then blended with soybean biodiesel in order to prevent its deterioration and provide long-term storage [20,21].…”

Section: Introductionmentioning

confidence: 99%

Application of solvent dye in the field of biodiesel preservation

Souza

Comin

Oliveira

et al. 2017

Coloration Technology

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In this study, biodiesel (OSRB) from degummed oilseed radish oil (OSR) was obtained by transesterification, and the effect on its thermal stability of a binary compound containing a conventional antioxidant and a solvent dye was evaluated. A combination of the traditional antioxidant tert-butylhydroquinone (TBHQ) and a solvent dye, so-called CI Solvent Blue 35 (SB-35), was prepared and incorporated into OSR and OSRB prior to analysis. The acid value, peroxide value, and induction period were measured, and it was found that TBHQ and SB-35 were highly effective in stabilising OSR and OSRB when used in combination. The TBHQ/SB-35 blend had strong antioxidation activity, even at very low concentrations, when compared with the addition of the individual compounds. In summary, the results showed that a TBHQ/SB-35 blend may be successfully used as an alternative additive for improving oil and biodiesel preservation.

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Changes of the tocopherol and fatty acid contents in rapeseed oil during refining

Cited by 8 publications

References 0 publications

Current Research Developments on the Processing and Improvement of the Nutritional Quality of Rapeseed (Brassica napus L.)

Current Research Developments on the Processing and Improvement of the Nutritional Quality of Rapeseed (Brassica napus L.)

Canolol Dimer, a Biologically Active Phenolic Compound of Edible Rapeseed Oil

Application of solvent dye in the field of biodiesel preservation

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