scholarly journals Development of blends of vegetable oils for a healthy diet

2021 ◽  
Vol 83 (1) ◽  
pp. 187-191
Author(s):  
N. L. Kleymenova
Keyword(s):  
Fatty Acid ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Milk Thistle ◽  
Healthy Human ◽  
Desirability Functions ◽  
Camelina Oil ◽  
Organoleptic Characteristics ◽  
Standard Level ◽  
Nutritional Needs

The analysis of vegetable oils was carried out in accordance with the recommendations of physiological needs for different groups of the population and FAO / WHO to meet the need for the consumption of vegetable oils. The aim of the work is to create blends of vegetable oils with an optimized composition of polyunsaturated fatty acids ?3, ?6, ?9 for healthy human nutrition. The objects of research are vegetable oils obtained by cold pressing from milk thistle, sunflower, rapeseed and camelina. The analysis of the fatty acid composition of the oils was carried out using gas chromatography. It was found that the greatest amount of ?6 is contained in sunflower oil – 66%, in milk thistle oil – 53%, in rapeseed oil 20%, in camelina oil 17%. Camelina oil is rich in ?3 – 37%, rapeseed oil ?9 – 59%, which corresponds to the standards for these types of oils. Using the method of linear programming, the calculation of four-component blends of various types of oils, balanced by ?3, ?6, ?9, in accordance with the norms recommended for satisfying the daily nutritional needs of a person is presented. Blends of vegetable oils were designed. The ratio in fatty acid blends ?3: ?6: ?9 - 1: 1.5: 1.3 has been established. By means of modeling, 5 blends of vegetable oils with different compositions were obtained. Based on the data obtained, the partial desirability functions for each blend and the general Harrington index were calculated. The values of the desirability functions that exceed 0.9 and the generalized Harrington criterion of 0.97 were obtained, which corresponds to the standard level of the desirability scale "excellent". In this regard, it can be argued that the resulting blends have a balanced composition. It should be noted that the next step is a tasting studies in order to obtain satisfactory organoleptic characteristics.

scholarly journals Heating of Plant Oils-Fatty Acid Reactions versus Tocopherols Degradation

2009 ◽  
Vol 27 (Special Issue 1) ◽  
pp. S185-S187 ◽  
Author(s):  
Z. Réblová ◽  
D. Tichovská ◽  
M. Doležal
Keyword(s):  
Fatty Acid ◽  
Soybean Oil ◽  
Olive Oil ◽  
Vegetable Oils ◽  
Sunflower Oil ◽  
Rapeseed Oil ◽  
Degradation Rate ◽  
Plant Oils ◽  
Oil Sunflower ◽  
High Degradation Rate

Relationship between polymerised triacylglycerols formation and tocopherols degradation was studied during heating of four commercially accessible vegetable oils (rapeseed oil, classical sunflower oil, soybean oil and olive oil) on the heating plate with temperature 180°C. The content of polymerised triacylglycerols 6% (i.e. half of maximum acceptable content) was achieved after 5.3, 4.2, 4.1, and 2.6 hours of heating for olive oil, soybean oil, rapeseed oil and sunflower oil, respectively, while decrease in content of total tocopherols to 50% of the original content was achieved after 3.4, 1.6, 1.3, and 0.5 hours of heating for soybean oil, rapeseed oil, sunflower oil and olive oil, respectively. Because of the high degradation rate of tocopherols, decrease in content of total tocopherols to 50% of the original content was achieved at content of polymerised triacylglycerols 0.6%, 1.9%, 2.8% and 4.9% for olive oil, rapeseed oil, sunflower oil and soybean oil, respectively, i.e. markedly previous to the frying oil should be replaced.

scholarly journals Effects of Dietary Conjugated Linoleic Acid and Selected Vegetable Oils or Vitamin E on Fatty Acid Composition of Hen Egg Yolks

2019 ◽  
Vol 19 (1) ◽  
pp. 173-188
Author(s):  
Magdalena Franczyk-Żarów ◽  
Beata Szymczyk ◽  
Renata B. Kostogrys
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Vitamin E ◽  
Olive Oil ◽  
Conjugated Linoleic Acid ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Standard Diet ◽  
Egg Yolks

AbstractThe objective of this study was to produce eggs enriched with conjugated linoleic acid (CLA) and ameliorate their fatty acid profile using the appropriate combination of dietary CLA with or without vegetable oils (olive oil or rapeseed oil) and vitamin E. In Experiment 1, 25-week-old laying hens were randomly distributed into eight groups of nine. Birds were fed with a standard diet with four different levels of CLA (0.0, 0.5, 0.75, 1.0%) and vegetable oils (olive oil or rapeseed oil, both in the amount of 1.46%). In Experiment 2, hens were randomly distributed into 12 groups of nine. The same four levels of CLA with three doses of vitamin E (0, 150, 300 mg/kg of diet) were applied. In both experiments, eggs were collected twice (at 4 and 8 weeks) for fatty acid profiling using GCMS. The differences between treatment means were considered significant at P<0.05. CLA treatments significantly increased the content of CLA, saturated fatty acids (SFA), and significantly decreased the content of monounsaturated fatty acids (MUFA) in the egg yolk, whereas levels of polyunsaturated fatty acids (PUFA) were unaffected. The vegetable oils used did not prevent the negative effects of CLA effectively. Only after eight weeks of experiment 1 SFA levels were significantly lower, but MUFA levels were significantly higher in groups fed with rapeseed oil compared to groups fed with olive oil. In experiment 2, the addition of vitamin E to the hen diet did not have an essential influence on the lipid profile of egg yolks.

scholarly journals Application of combined methods for the production of ingredients for the confectionery industry

2021 ◽  
Vol 285 ◽  
pp. 05005
Author(s):  
Zinaida Baranova ◽  
Irina Krasina ◽  
Natalia Tarasenko ◽  
Rimma Elemanova
Keyword(s):  
Fatty Acid ◽  
Cocoa Butter ◽  
Trans Fatty Acid ◽  
Vegetable Oils ◽  
Mixed Type ◽  
Partial Hydrogenation ◽  
Crystal Formation ◽  
Organoleptic Characteristics ◽  
Physical And Chemical ◽  
Combined Methods

The production of confectionery products, especially those coated with chocolate or confectionery glaze, faces the challenges of selecting high-quality and technological fatty bases for the glaze or filling on a daily basis. In nature, the amount of vegetable oils that have an optimal fatty acid and triglyceride composition for use as such a base is significantly limited. Indeed, most of the vegetable oils and fats require a partial hydrogenation stage, that is, a change in the saturation level. As a result of these modifications, trans-fatty acid fatty acids are formed, which both impart hardness and form the basic rheological characteristics of the fatty base. The development of new, combined methods for the production of fatty ingredients for the confectionery industry and the improvement of processes for the modification of oils and fats are current trends in food production. In order to produce fatty ingredients – non-tempered mixed type cocoa butter substitutes with a low content of trans-fatty acid isomers and with optimal crystal formation properties, a research was carried out in respect of a set of indicators that form the consumer properties of the finished product: physical and chemical properties and main indicators of melting and solidification, as well as structural-mechanical and organoleptic characteristics. The research objectives included the study of the physical and chemical characteristics of the initial components of fatty ingredients, laboratory-based obtaining of samples of fatty ingredients for the production of confectionery glazes, the study of the physicochemical, structural, mechanical and rheological properties of the obtained fatty ingredients. The result of the research was the developed combined technology for the production of a non-tempered mixed type cocoa butter substitute with optimal consumer characteristics.

Detection of lactobacillic acid in low erucic rapeseed oil—A note of caution when quantifying cyclic fatty acid monomers in vegetable oils

2010 ◽  
Vol 163 (7) ◽  
pp. 698-702 ◽  
Author(s):  
Olivier Berdeaux ◽  
Stéphane Gregoire ◽  
Cindie Fournier ◽  
William W. Christie ◽  
Pierre Lambelet ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Cyclic Fatty Acid ◽  
Cyclic Fatty Acid Monomers ◽  
Lactobacillic Acid

Calculation of the molar heat of formation of fatty acid triglycerides from the heat of combustion of vegetable oils

2021 ◽  
Vol 11 (4) ◽  
pp. 8-15
Author(s):  
Łukasz Jęczmionek
Keyword(s):  
Fatty Acid ◽  
Vegetable Oils ◽  
Calculation Method ◽  
Formation Enthalpy ◽  
Heat Of Formation ◽  
Heat Of Combustion ◽  
Calorimetric Method ◽  
Combustion Heat ◽  
Natural Oils ◽  
Fatty Acid Triglycerides

The results of the research on estimation the molar heat of formation (enthalpy) of model triglycerides found in natural oils and fats are presented. In this work a calculation method and calorimetric one were used. It was found that combustion heat values determined by separate methods are comparable; their difference was a maximum of 155 kJ/kg, and thus was significantly lower than the tolerance for the calorimetric method according to PN 86/C-04062.

MECHANOCHEMICAL ACTIVATION METHOD TECHNOLOGICAL PROCESS REFINING OF VEGETABLE OILS

2020 ◽  
Author(s):  
В.И. МАРТОВЩУК ◽  
С.А. КАЛМАНОВИЧ ◽  
А.А. ЛОБАНОВ ◽  
Е.В. МАРТОВЩУК
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Vegetable Oils ◽  
Structural Changes ◽  
Mechanochemical Activation ◽  
Cavitation Effect ◽  
Temperature Mode ◽  
The Stability ◽  
Local Pressures

Исследовано влияние механохимической активации на гидратируемость фосфолипидов растительных масел. Для эксперимента использовали механохимический активатор, обеспечивающий высокие локальные давления, сдвиговые деформации и кавитационный эффект, при следующих параметрах работы: давление на контактирующих поверхностях 70 МПа, частота 180 Гц, скорость сдвига 10200 с–1, размер капли эмульсии 1–2 мкм. Обработку образцов подсолнечного масла осуществляли в течение от 0 до 80 с при температурах 50, 60 и 70°С. Активность фосфолипидов оценивали по величине их адсорбции на границе с полярной поверхностью (водой) в оптимальном температурном режиме при обработке в механохимическом активаторе и без нее. Установлено, что механохимическая активация способствует снижению энергии активации с 6,4 до 4,7 кДж/моль за счет химических и структурных изменений фосфолипидов. В жирнокислотном составе фосфолипидов на 10–12% увеличилось содержание олеиновой кислоты при соответствующем уменьшении линолевой; в фосфатидилэтаноламинах и фосфатидилсеринах отмечено увеличение до 3% содержания пальмитиновой кислоты и незначительно – стеариновой кислоты. Эти изменения жирнокислотного состава и физических свойств фосфолипидов способствуют повышению их гидратируемости и уменьшению доли полиненасыщенных жирных кислот, что должно обеспечить стабильность обработанных в механохимическом активаторе масел к окислению при хранении. The effect of mechanochemical activation on the hydration of phospholipids of vegetable oils has been studied. A mechanochemical activator providing high local pressures, shear deformations and cavitation effect was used for the experiment with the following operating parameters: pressure on the contact surfaces of 70 MPa, frequency of 180 Hz, shear rate of 10200 s–1, the size of the emulsion drop of 1–2 microns. Processing of sunflower oil samples was carried out during 0 to 80 s at temperatures of 50, 60 and 70°C. The activity of phospholipids was estimated by the amount of their adsorption at the border with the polar surface (water) in the optimal temperature mode when processed in a mechanochemical activator and without it. It was found that mechanochemical activation contributes to a decrease in the activation energy from 6,4 to 4,7 kJ/mol due to chemical and structural changes in phospholipids. In the fatty acid composition of phospholipids, the content of oleic acid increased by 10–12% with a corresponding decrease in linoleic acid; in phosphatidylethanolamines and phosphatidylserines, the increase in the content of palmitic acid was noted to 3%, and stearic acid – slightly. These changes in the fatty acid composition and physical properties of phospholipids contribute to increasing their hydration and reducing the proportion of polyunsaturated fatty acids, which should ensure the stability of the oils processed in the mechanochemical activator to oxidation during storage.

Enhancement of Thermo-Oxidative Stability of Vegetable Oil Based Lubricant via Chemical Modification Techniques

2015 ◽  
Vol 813-814 ◽  
pp. 695-699
Author(s):  
S. Arumugam ◽  
G. Sriram ◽  
A. Hemanth Sai Kumar Chowdary ◽  
Janga Subramanya Sai
Keyword(s):  
Chemical Modification ◽  
Oxidative Stability ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Chemical Structure ◽  
Thermo Gravimetric Analysis ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
Transesterification Method ◽  
Unique Chemical

The rising demand for environmentally acceptable lubricant has led researchers to look to vegetable oils as an alternative to petroleum based lubricants. Vegetable oils have radically distinctive properties owing to their unique chemical structure which have greater ability to lubricate and have higher biodegradability. In spite of advantages, they are limited to inadequate thermo-oxidative stability and poor low-temperature properties which hinder their utilization. In the present study in order to produce a bio lubricant with good thermo-oxidative stability, rapeseed oil was subjected to two different chemical modification techniques viz., epoxidation method and successive transesterification method. The thermo-oxidative stability of formulated oil was analysed using Thermo Gravimetric Analysis (TGA). TGA analysis divulges that the thermo-oxidative stability of rapeseed oil was greatly improved with the epoxidation method in comparison with the successive transesterification method.

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