902 Combustion Characteristics of Blended Coconut Oil and Rapeseed Oil Biodiesels

Effects of different dietary fats on plasma, hepatic and biliary lipids were determined in male golden Syrian hamsters (Mesocricetus auratus) fed on purified diets for 7 weeks. Diets were made by blending different fats containing characteristic fatty acids: butter (14:0 + 16:0), palm stearin (16:0), coconut oil (12:0 + 14:0), rapeseed oil (18:1), olive oil (18:l) and sunflowerseed oil (18:2). In all diets except the sunflowerseed oil diet dietary 18:2 was held constant at 2% energy. Total fat supplied 12% of energy and cholesterol was added at 4 g/kg diet. Plasma cholesterol and triacyglycerol concentrations were increased by dietary cholesterol. After 7 weeks, plasma cholesterol concentrations were highest with the palm Stearin, coconut oil and olive oil diets (8·9, 8·9 and 9·2 mmol/l) and lowest with the rapeseed oil and sdowerseed oil diets (6·7 and 5·5 mmol/l) while the butter diet was intermediate (8·5 mmol/l). Hepatic cholesterol concentration was highest in hamsters fed on the olive oil diet and lowest with the palm stearin diet (228v. 144 µmol/g liver). Biliary lipids, lithogenic index and bile acid profile of the gall-bladder bile did not differ significantly among the six diets. Although the gallstone incidence was generally low in this study, three out of 10 hamsters fed on the palm stearin diet developed cholesterol gallstones. In contrast, no cholesterol gallstones were found with the other diets. Rapeseed and dowerseed oils caused the lowest plasma cholesterol and triacyglycerol concentrations whereas olive oil failed to demonstrate a cholesterol-lowering effect compared with diets rich in saturated fatty acids. Since 18:2 was kept constant at 2% of energy in all diets, the different responses to rapeseed and olive oils could possibly be attributed to their different contents of 16:0 (5·6 %v. 12·8% respectively). Other possible explanations are discussed.

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Combustion characteristics of compression ignition engine fuelled with rapeseed oil–diesel fuel–n-butanol blends

Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles ◽

10.2516/ogst/2021001 ◽

2021 ◽

Vol 76 ◽

pp. 17

Author(s):

Jakub Čedík ◽

Martin Pexa ◽

Bohuslav Peterka ◽

Miroslav Müller ◽

Michal Holubek ◽

...

Keyword(s):

Vegetable Oils ◽

Diesel Fuel ◽

Rapeseed Oil ◽

Direct Injection ◽

Combustion Characteristics ◽

Solid Particles ◽

Compression Ignition ◽

Compression Ignition Engine ◽

Fuel Blend ◽

Fuel Blends

Liquid biofuels for compression ignition engines are often based on vegetable oils. In order to be used in compression ignition engine the vegetable oils have to be processed because of their high viscosity or it is also possible to use vegetable oils in fuel blends. In order to decrease the viscosity of the fuel blends containing crude vegetable oil the alcohol-based fuel admixtures can be used. The paper describes the effect of rapeseed oil–diesel fuel–n-butanol blends on combustion characteristics and solid particles production of turbocharged compression ignition engine. The 10% and 20% concentrations of n-butanol in the fuel blend were measured and analysed. The engine Zetor 1204, located in tractor Zetor Forterra 8641 with the power of 60kW and direct injection was used for the measurement. The engine was loaded through power take off shaft of the tractor using mobile dynamometer MAHA ZW500. The measurement was carried out in stabilized conditions at 20%, 60% and 100% engine load. The engine speed was kept at 1950 rpm. Tested fuel blends showed lower production of solid particles than diesel fuel and lower peak cylinder pressure and with increasing concentration of n-butanol in the fuel blend the ignition delay was prolonged and premixed phase of combustion was increased.

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Fat blends on the base of structural triglycerides

Czech Journal of Food Sciences ◽

10.17221/10616-cjfs ◽

2004 ◽

Vol 22 (SI - Chem. Reactions in Foods V) ◽

pp. S76-S79

Author(s):

V. Filip ◽

M. Zárubová ◽

I. Piska ◽

J. Šmidrkal

Keyword(s):

Stearic Acid ◽

Physical Properties ◽

Palmitic Acid ◽

Trans Isomer ◽

Rapeseed Oil ◽

Enzymatic Reaction ◽

Coconut Oil ◽

Crystalline Modification ◽

Lipozyme Tl Im ◽

Long Chain

Fat blends for manufacture of trans isomer-free emulsified fats are prepared by blending of 20–30% of structured fat with vegetable oil. Structured fats on the base of trisaturated triglycerides are produced by basic or enzymatic catalyzed transesterification of fully hydrogenated coconut oil with fully hydrogenated palmstearine or low erucic rapeseed oil. Physical properties of transesterificated structured fats produced by enzymatic reaction using immobilized sn-1,3 specific lipase Lipozyme TL IM or by randomization are similar. The replacement of palmitic acid with stearic acid without any changes in the ratio between medium chain FA and long chain FA was observed too. Fat blends contain mixture of β` and β crystals, the replacement of palmitic acid with stearic acid in structured fat does not influence neither crystalline modification nor SFC profiles but it has a significant effect on fat blend consistency.

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Diesel Combustion Characteristics of Rapeseed Oil Isobutyl Ester

The Proceedings of Conference of Hokuriku-Shinetsu Branch ◽

10.1299/jsmehs.2018.55.c043 ◽

2018 ◽

Vol 2018.55 (0) ◽

pp. C043

Author(s):

Jinwei LI ◽

Eiji KINOSHITA ◽

Takeshi OTAKA ◽

Yasufumi YOSHIMOTO

Keyword(s):

Rapeseed Oil ◽

Combustion Characteristics ◽

Diesel Combustion ◽

Isobutyl Ester

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114 Diesel Combustion Characteristics of Coconut Oil Ester Fuels

The Proceedings of Conference of Kyushu Branch ◽

10.1299/jsmekyushu.2014.67._114-1_ ◽

2014 ◽

Vol 2014.67 (0) ◽

pp. _114-1_-_114-2_

Author(s):

Kenta KOIDE ◽

Akira ITAKURA ◽

Eiji KINOSHITA ◽

Yasufumi YOSHIMOTO

Keyword(s):

Coconut Oil ◽

Combustion Characteristics ◽

Diesel Combustion

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4824 Diesel Combustion Characteristics of Coconut Oil EthylEster

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.2006.7.0_207 ◽

2006 ◽

Vol 2006.7 (0) ◽

pp. 207-208

Author(s):

Eiji KINOSHITA ◽

Shogo NISHI ◽

Kazunori HAMASAKI ◽

Thet MYO

Keyword(s):

Coconut Oil ◽

Combustion Characteristics ◽

Diesel Combustion

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Source of Dietary Fat in Pig Diet Affects Adipose Expression of Genes Related to Cancer, Cardiovascular, and Neurodegenerative Diseases

Genes ◽

10.3390/genes10120948 ◽

2019 ◽

Vol 10 (12) ◽

pp. 948

Author(s):

Maria Oczkowicz ◽

Tomasz Szmatoła ◽

Małgorzata Świątkiewicz

Keyword(s):

Differentially Expressed Genes ◽

Beef Tallow ◽

Rapeseed Oil ◽

Fluid Shear Stress ◽

Coconut Oil ◽

Enrichment Analysis ◽

Gene Set Enrichment Analysis ◽

Differentially Expressed ◽

Coagulation Cascade ◽

P Value

It has been known for many years that excessive consumption of saturated fats has proatherogenic properties, contrary to unsaturated fats. However, the molecular mechanism covering these effects is not fully understood. In this paper, we aimed to identify differentially expressed genes (DEGs) using RNA-sequencing, following feeding pigs with different sources of fat. After comparison of adipose samples from three dietary groups (rapeseed oil (n = 6), beef tallow (n = 5), coconut oil (n = 5)), we identified 29 DEGs (adjusted p-value < 0.05, fold change > 1.3) between beef tallow and rapeseed oil and 2 genes between coconut oil and rapeseed oil groups. No differentially expressed genes were observed between coconut oil and beef tallow groups. Almost all 29 DEGs between rapeseed oil and beef tallow groups are connected to neurodegenerative, cardiovascular diseases, or cancer (e.g., PLAU, CYBB, NCF2, ZNF217, CHAC1, CTCFL). Functional analysis of these genes revealed that they are associated with fluid shear stress response, complement and coagulation cascade, ROS signaling, neurogenesis, and regulation of protein binding and protein catabolic processes. Furthermore, gene set enrichment analysis (GSEA) of the whole datasets from all three comparisons suggests that both beef tallow and coconut oil may trigger changes in the expression level of genes crucial in the pathogenesis of civilization diseases.

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