Study of the Qualitative Characteristics of Rapeseed Oil Obtained by Cold Pressing

Клейменова, Н. Л.; Болгова, Инэсса Николаевна; Копылов, М. В.; Zheltoukhova, E Yu

doi:10.18502/kls.v0i0.8959

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Clearly, the RSO is apparently dominated by oleic acid (84.7 wt %), followed by palmitic acid (6.71 wt %) and linoleic acid at 2.18 wt %. However, the high content of oleic acid of 84.7 wt % was above the range of 50 to 75 wt % often reported in literatures, − which may indicate its predominance in RSO and therefore occurred at enhanced levels among the free fatty acids that were esterified. Although high oleic RSO cultivars have been developed, it was unlikely that this result was conclusive and would be checked after the subcritical water hydrolysis method in Section .…”

Section: Results and Discussionmentioning

confidence: 64%

Subcritical Water Hydrolysis of Fresh and Waste Cooking Oils to Fatty Acids Followed by Esterification to Fatty Acid Methyl Esters: Detailed Characterization of Feedstocks and Products

et al. 2022

View full text Add to dashboard Cite

In this present work, the hydrolysis of a sample of rapeseed oil (RSO) and two waste cooking oil (WCO) samples in subcritical water has been carried out in a stirred batch stainlesssteel reactor to produce fatty acids. Using RSO as a model triglyceride, the effects of reaction parameters on the yields of fatty acids were investigated to determine the optimum set of hydrolysis conditions to be a temperature of 300 °C, a reaction time of 60 min, and a vegetable oil−water mass ratio of 1:2. The set of optimum conditions was applied to the hydrolysis of the WCOs. Oleic acid was the dominant fatty acid with yields of 74.4 wt % from RSO and 57.5 and 72.4 wt % from the two WCOs, respectively, while palmitic acid was the second most abundant fatty acid with yields of up to 31 wt %. The feedstocks and fatty acid products were characterized by acid−base titration and thermogravimetric analysis (TGA). Thereafter, the hydrolysis products from the optimum conditions were esterified to their fatty acid methyl esters (FAMEs), which were further characterized by gas chromatography−mass spectrometry (GC/MS) and TGA. With RSO at the optimum hydrolysis conditions, acid−base titration gave a fatty acid yield of 97.2 wt %, while TGA gave 86 wt %. Under the same conditions, the yield of FAMEs from GC/MS analysis was 88.6 wt %, while TGA gave a FAMEs' yield of 91 wt %. This study showed that the simple TGA method provided detailed and complete characterization of lipid feedstocks and their conversion products. In addition, subcritical water hydrolysis can be used to valorize WCOs to fatty acids, with little or no extensive feedstock purification, for various applications including biodiesel production.

show abstract

Section: Results and Discussionmentioning

confidence: 64%

Subcritical Water Hydrolysis of Fresh and Waste Cooking Oils to Fatty Acids Followed by Esterification to Fatty Acid Methyl Esters: Detailed Characterization of Feedstocks and Products

et al. 2022

View full text Add to dashboard Cite

show abstract

Influence of biostimulants and humic extracts treatment on the fatty acid profile of the spring oilseed rape variety

Petrova

Ivanova

Stoyanova

et al. 2023

AST

View full text Add to dashboard Cite

Abstract. For two consecutive economic years, a field experiment was conducted with spring rapeseed hybrid Rasna. The aim is to trace the effect of phytostimulant treatment on the total fat content of rapeseed and the proportion of essential fatty acids. The application of biostimulants (organic acid and humic complexes) in the cultivation of rapeseed variety Rasna leads to changes in the fatty acid composition of the seeds. The use of biostimulants HL100, HLN 55 and TH1-20% in the first year leads to a decrease in the content of saturated by 3.5%, 1.74% and 4.7% and polyunsaturated fatty acids by 2.74%, 0.59% and 3.15% due to the higher content of monounsaturated fatty acids by 0.99%, 0.58 and 1.47%. Biostimulator TH1-10% leads to an increase in saturated by 0.06%, monounsaturated by 0.26% and a decrease in polyunsaturated fatty acids by 1.35% compared to the control group of seeds. In the second year of treatment of rapeseed variety Rasna saturated fatty acids decreased compared to the control group to a lesser extent: with the application of biostimulant TH1-10% and HLN 55 by 0.33% and 0.11%, while with biostimulants HL 100, TH1-20% and H40 their content increases by 0.97, 0.06% and 0.04% respectively. Monounsaturated fatty acids decreased in humic complexes by 0.34%, biostimulator TH1-10% by 0.72% and biostimulator TH1-20% by 0.23%. Polyunsaturated fatty acids have the highest degree of reduction when applying biostimulant HL 100-2.77%. Saturated and polyunsaturated fatty acids had a higher content in the first year of treatment in rapeseed hybrid Rasna, while the concentration of monounsaturated fatty acids increased with a high degree of confidence (P≤0.001) in the second marketing year. This, on the one hand, is due to environmental factors, and on the other – to the type of preparation for treatment. The improved fatty acid composition of the seeds makes them a suitable raw material for the production of fats and their use in feed for monogastric and ruminant animals

show abstract

Study of the Qualitative Characteristics of Rapeseed Oil Obtained by Cold Pressing

Cited by 2 publications

References 0 publications

Subcritical Water Hydrolysis of Fresh and Waste Cooking Oils to Fatty Acids Followed by Esterification to Fatty Acid Methyl Esters: Detailed Characterization of Feedstocks and Products

Subcritical Water Hydrolysis of Fresh and Waste Cooking Oils to Fatty Acids Followed by Esterification to Fatty Acid Methyl Esters: Detailed Characterization of Feedstocks and Products

Influence of biostimulants and humic extracts treatment on the fatty acid profile of the spring oilseed rape variety

Contact Info

Product

Resources

About