Influence of the operating conditions and the external mass transfer limitations on the synthesis of fatty acid esters using a Candida antarctica lipase

2007 ◽  
Vol 40 (4) ◽  
pp. 716-722 ◽  
Author(s):  
G. Trubiano ◽  
D. Borio ◽  
A. Errazu
Keyword(s):  
Mass Transfer ◽  
Fatty Acid ◽  
Candida Antarctica ◽  
Operating Conditions ◽  
Fatty Acid Esters ◽  
Candida Antarctica Lipase ◽  
External Mass Transfer ◽  
Acid Esters

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.

Development of the determination methods of fatty acid esters of chloropropanediols in fat-rich foods

2014 ◽  
Vol 31 (2) ◽  
pp. 95-101
Author(s):  
Xiaobo YAN ◽  
Shaoming WU ◽  
Nan LI ◽  
Huadong LV ◽  
Wusheng FU
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Esters ◽  
Determination Methods ◽  
Acid Esters

Mesomorphic Behaviour of Saturated and Monounsaturated C18 and C22 Fatty Acid Esters of Cholesterol

1994 ◽  
Vol 59 (4) ◽  
pp. 833-840
Author(s):  
Slavomír Pirkl
Keyword(s):  
Phase Transitions ◽  
Fatty Acid ◽  
Fatty Acid Esters ◽  
Aliphatic Esters ◽  
Acid Esters

The phase transitions and effective optical rotary power of saturated and monounsaturated aliphatic esters of cholesterol with 18 and 22 carbon atoms in the chain have been described. The effect of cis/trans isomerism on these properties is discussed.

The occurrence of long chain polyprenols in leaves of plants of Rosaceae family and their isolation by time-extended liquid chromatography

1992 ◽  
Vol 70 (6) ◽  
pp. 448-454 ◽  
Author(s):  
Ewa Świeżewska ◽  
T. Chojnacki ◽  
W. J. Jankowski ◽  
K. Singh ◽  
J. Olsson
Keyword(s):  
Liquid Chromatography ◽  
Fatty Acid ◽  
Large Scale ◽  
Fatty Acid Esters ◽  
Large Scale Preparation ◽  
Scale Preparation ◽  
Wet Weight ◽  
Rosaceae Family ◽  
Acid Esters ◽  
Long Chain

The long chain polyprenols composed of 30 and more isoprene units from leaves of plants belonging to the genera Potentilla and Rosa have been described. They occur in the form of fatty acid esters. The composition of polyprenol mixture was species dependent and its content reached ca. 0.5% wet weight. Large scale preparation of individual polyprenols from a natural polyprenol mixture was performed using time-extended liquid chromatography on the hydrophobic gel Lipidex-5000.Key words: long chain polyprenols, Rosaceae.

Separation of Fatty Acid Dimethyl Esters on an Ionic Liquid Gas Chromatographic Column

2020 ◽  
Author(s):  
R E Pauls ◽  
B Pease
Keyword(s):  
Ionic Liquid ◽  
Fatty Acid ◽  
Stationary Phases ◽  
Carbon Number ◽  
Fatty Acid Esters ◽  
Reaction Products ◽  
Isomer Separation ◽  
Metathesis Reaction ◽  
Polydimethyl Siloxane ◽  
Acid Esters

Abstract An ionic liquid (IL) 111 column was compared with other commonly employed stationary phases including polydimethyl siloxane and polyethylene glycol for the separation of fatty acid monomethyl and dimethyl esters. The fatty acid esters employed in this study were derived from metathesis reactions of vegetable oils both with and without olefins. The IL 111 column demonstrated enhanced performance compared with conventional columns for the separation of these esters. These advantages included significantly enhanced retention of dimethyl esters relative to monomethyl esters, excellent cis/trans isomer separation and the ability to analyze higher carbon number dimethyl esters. As a result, these columns are highly suited for the analysis of mixtures of mono- and dimethyl fatty acid esters found in lipid metathesis reaction products or to determine monofunctional impurities in samples of commercial dimethyl esters.

scholarly journals Terminal Trialkylsilyl Substituent Effect of Janus-type Molecular Tubes on the Inclusion of Unsaturated Fatty Acid Esters

ACS Omega ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 3227-3231
Author(s):  
Chizuru Kogame-Asahara ◽  
Hitomi Iguchi ◽  
Kenichiro Honda ◽  
Hajime Shigemitsu ◽  
Toshiyuki Kida
Keyword(s):  
Fatty Acid ◽  
Unsaturated Fatty Acid ◽  
Substituent Effect ◽  
Fatty Acid Esters ◽  
Molecular Tubes ◽  
Acid Esters
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