scholarly journals FRACTIONATION OF FATTY ACID ESTERS AND ACYLGLYCERIDES WITH PRESSURIZED CO2

2019 ◽  
Vol 49 (2) ◽  
pp. 117-124
Author(s):  
Natalia Cotabarren ◽  
Pablo Hegel ◽  
Selva Pereda
Keyword(s):  
Fatty Acid ◽  
Vegetable Oils ◽  
High Viscosity ◽  
Operating Conditions ◽  
Fatty Acid Esters ◽  
Emulsifying Properties ◽  
Relative Volatility ◽  
Fractionation Process ◽  
Synthesis Routes ◽  
Acid Esters

Fatty mono- and di-glycerides are products highly used in the food, cleaning and cosmetic industries because of their emulsifying properties. These products can be obtained through different synthesis routes, namely, glycerolysis of vegetable oils, direct esterification of fatty acids with glycerol or partial transesterification of vegetable oils with alcohols. The last two chemical pathways produce fatty acid esters besides mono/diglycerides, which are difficult to split and purify at industrial scale because of its low vapor pressure, low relative volatility, and high viscosity. In this work, we evaluate the fractionation of fatty acid esters and acylglycerides by supercritical CO2 technology. High pressure experimental extractions were carried out at different operating conditions to validate the technology and a rigorous thermodynamic model was used to evaluate the fractionation process.

In situ alkaline transesterification: An effective method for the production of fatty acid esters from vegetable oils

2004 ◽  
Vol 81 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Michael J. Haas ◽  
Karen M. Scott ◽  
William N. Marmer ◽  
Thomas A. Foglia
Keyword(s):  
Fatty Acid ◽  
Vegetable Oils ◽  
Fatty Acid Esters ◽  
Acid Esters

scholarly journals Direct Determination of MCPD Fatty Acid Esters and Glycidyl Fatty Acid Esters in Vegetable Oils by LC–TOFMS

2010 ◽  
Vol 88 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Troy D. Haines ◽  
Kevin J. Adlaf ◽  
Robert M. Pierceall ◽  
Inmok Lee ◽  
Padmesh Venkitasubramanian ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Vegetable Oils ◽  
Direct Determination ◽  
Fatty Acid Esters ◽  
Glycidyl Fatty Acid Esters ◽  
Acid Esters

scholarly journals Low-molecular-weight, fatty-acid esters as potential low-temperature drilling fluids for ice coring

2014 ◽  
Vol 55 (68) ◽  
pp. 39-43 ◽  
Author(s):  
Huiwen Xu ◽  
Lili Han ◽  
Pinlu Cao ◽  
Mingyi Guo ◽  
Junjie Han ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Fatty Acid ◽  
Butyl Acetate ◽  
Drilling Fluid ◽  
High Viscosity ◽  
Fatty Acid Esters ◽  
Low Molecular Weight ◽  
Drilling Fluids ◽  
Cold Environments ◽  
Acid Esters

AbstractA challenge for future deep-ice coring in central Antarctica is to identify an appropriate inert drilling fluid with no undesirable physical or chemical characteristics. The drilling fluids currently in use (kerosene-based fluids with density-increasing additives, ethanol and n-butyl acetate) are not intelligent choices for the future from safety, environmental and some technological standpoints. Recently proposed drilling fluids based upon ESTISOL™ have high viscosity at low temperatures, which severely limits their application in cold environments. This paper presents our research into the application of low-molecular-weight, fatty-acid esters (FAEs), substances commonly used in the fragrance and flavoring industries. According to available data, selected FAEs are not hazardous to human health. Considering density requirements alone, ethyl butyrate and n-propyl propionate best meet our present needs. The viscosities of these two chemicals are also the lowest among studied FAEs, not exceeding 4 mPas at temperatures down to −60°C. Both compounds are highly volatile, and insoluble in water. Such properties are attractive, but the applicability of FAEs to deep, cold, ice drilling can be evaluated only after field-based, practical experiments in test boreholes.

scholarly journals Formation of acylglycerol chloro derivatives in vegetable oils and mitigation strategy

2011 ◽  
Vol 29 (No. 4) ◽  
pp. 448-456 ◽  
Author(s):  
J. Šmidrkal ◽  
V. Ilko ◽  
V. Filip ◽  
M. Doležal ◽  
Z. Zelinková ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Vegetable Oils ◽  
Mitigation Strategy ◽  
Refining Process ◽  
Fatty Acid Esters ◽  
Process Conditions ◽  
Processed Foods ◽  
Oil Composition ◽  
Detailed Explanation ◽  
Acid Esters

The most important acylglycerol chloroderivatives identified in foods are 3-chlorpropane-1,2-diol fatty acid esters (3-CPD esters) that are accompanied by epoxypropanol fatty acid esters formed in processed foods and, particularly, during the deodorisation of vegetable oils. Their content in refined vegetable oils is influenced by the oil composition, refining process conditions and process conditions of hydrogenation. Described and discussed here are the main pathways that lead to the formation of acylglycerols chloroderivatives and epoxypropanol fatty acid esters. The article offers detailed explanation of the reaction mechanisms using the well-known chemical principals based on experimental data. The conditions suitable for removing the unwanted products from the refined vegetable oils were studied in models containing variable proportions of agents (bicarbonates or carbonates) causing the decomposition of 3-CPD fatty acid esters.

scholarly journals Technological Aspects of Chemoenzymatic Epoxidation of Fatty Acids, Fatty Acid Esters and Vegetable Oils: A Review

Molecules ◽  
2015 ◽  
Vol 20 (12) ◽  
pp. 21481-21493 ◽  
Author(s):  
Eugeniusz Milchert ◽  
Kornelia Malarczyk ◽  
Marlena Kłos
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Vegetable Oils ◽  
Fatty Acid Esters ◽  
Acid Esters

Stability of biodiesel, its improvement and the effect of antioxidant treated blends on engine performance and emission

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36240-36261 ◽  
Author(s):  
M. M. Rashed ◽  
M. A. Kalam ◽  
H. H. Masjuki ◽  
H. K. Rashedul ◽  
A. M. Ashraful ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Vegetable Oils ◽  
Engine Performance ◽  
Chain Fatty Acid ◽  
Fatty Acid Esters ◽  
Long Chain Fatty Acid ◽  
Performance And Emission ◽  
Animal Fats ◽  
Acid Esters ◽  
Long Chain

Biodiesel consists of long chain fatty acid esters derived from vegetable oils, animal fats, and used oils.

Synthesis and emulsifying properties of carbohydrate fatty acid esters produced from Agave tequilana fructans by enzymatic acylation

2016 ◽  
Vol 204 ◽  
pp. 437-443 ◽  
Author(s):  
Leticia Casas-Godoy ◽  
Javier Arrizon ◽  
Daniel Arrieta-Baez ◽  
Francisco J. Plou ◽  
Georgina Sandoval
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Esters ◽  
Agave Tequilana ◽  
Emulsifying Properties ◽  
Enzymatic Acylation ◽  
Acid Esters
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