European Journal of Lipid Science and Technology This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

A sustainable tandem catalysis approach to plant oil based polyols via Schenck ‐Ene reaction and epoxidation
Abstract Novel polyols were synthesized in a one‐pot, tandem reaction approach. First, singlet oxygen was used as oxidant in the photochemical Schenck‐Ene reaction to obtain allyl hydroperoxides of triglycerides, which were reacted in situ to the corresponding epoxy alcohols catalyzed by titanium(IV) isopropoxide. Subsequent acidic epoxide ring‐opening with perchloric acid yielded a triglyceride‐based polyol. Under basic conditions applying aqueous sodium hydroxide solution, cleavage of the ester bonds of the triglyceride and epoxide ring‐opening occurred simultaneously resulting in a fatty acid‐based polyol.Pr...
Source: European Journal of Lipid Science and Technology - February 1, 2018 Category: Lipidology Authors: Maike Unverferth, Michael A. R. Meier Tags: Research Article Source Type: research

Application of Temperature Modulated Optical Refractometry for the Characterization of the Crystallization Behavior of Palm Oil
Abstract The phase behavior of fats is mainly determined using DSC. Here, the application of temperature modulated optical refractometry (TMOR) was examined to monitor the phase transitions of palm oil with different degrees of saturation.Studying the phase behavior by both methods revealed systematic differences. At identical scan rates, TMOR yielded up to 2 °C higher crystallization temperatures and identified consistently lower temperatures for melting phenomena. Because the prism serves as heating surface and defines the sample volume considered for the measurement a more direct heat transfer with TMOR is assumed. The...
Source: European Journal of Lipid Science and Technology - February 1, 2018 Category: Lipidology Authors: Michaela H äupler, Ratna Ayu Savitri, Valeska Hutschenreuter, Eckhard Flöter Tags: Research Article Source Type: research

Analytical determination of phylloquinone (vitamin K1) in olive oils. Comparison with other vegetable oils
Abstract Olive oil is mainly consumed in Mediterranean basin and is an important source of lipids, antioxidants and vitamins. Vitamin E (tocopherols) and phylloquinone (vitamin K1), are present in oils. If vitamin E was the subject of numerous studies, it was not the case of phylloquinone. The aim of this work was to uncover the latest advancements on phylloquinone contents in olive and vegetable oils. A bibliometric study, from Google Scholar and Web of Science databases, on the determination of phylloquinone content in vegetable oils made it possible to count a large number of scientific papers related to food matrices b...
Source: European Journal of Lipid Science and Technology - February 1, 2018 Category: Lipidology Authors: Catherine R ébufa, Jacques Artaud Tags: Review Article Source Type: research

Storage stability of dha in enriched liquid eggs
Abstract The oxidative stability of liquid eggs enriched with very long‐chain n‐3 fatty acids and liquid regular eggs stored under refrigerated temperature, was investigated. Oxidized lipids can alter both nutritional and sensorial properties of foods. The extent of lipid oxidation was evaluated by quantification of total lipids, docosahexaenoic acid (DHA) and peroxide value (PV), but also by assessment of total tocopherols and γ‐tocopherol losses. Additionally, the development of fishy off‐flavor was evaluated. Results highlighted significant differences between omega and regular liquid eggs stability. Although, ...
Source: European Journal of Lipid Science and Technology - February 1, 2018 Category: Lipidology Authors: Dorota Klensporf ‐Pawlik, Felix Aladedunye, Roman Przybylski Tags: Research Article Source Type: research

One ‐pot catalytic copolymerization of unsaturated plant oils or fatty acid methyl esters with ethylene
Abstract Until now natural fatty ester acid esters with their internal C=C‐bonds could not be used as substrates for catalytic polymerization reactions. It was always necessary to convert them to terminal unsaturated fatty acid esters first. Therefore we now developed a two‐catalyst system consisting of an isomerization catalyst and a Brookhart polymerization catalyst. With this system of isomerizing copolymerization (IsoCoP) it is possible to copolymerize high oleic plant oils or fatty acid methyl esters with ethylene in a one‐pot reaction. The resulting polymers have molecular weights above 30 kDa and can contain m...
Source: European Journal of Lipid Science and Technology - February 1, 2018 Category: Lipidology Authors: Andr é Fleckhaus, Patrice A. Fokou, Gerd Klaassen, Mark Rüsch gen Klaas Tags: Research Article Source Type: research

Characterization and Polymerization of Epoxidized Methacrylated Castor Oil
In this study, synthesis and polymerization of epoxidized methacrylated castor oil (EMETCO) was demonstrated. EMETCO was synthesized in two step. Castor oil (CO) was methacrylated with methacryloyl chloride at the first step. Then the methacrylated castor oil (METCO) was epoxidized by Prilezhaev reaction. Structure of EMETCO was determined by 1H NMR and IR techniques. EMETCO was copolymerized with acrylic acid (AA), styrene (ST) and methacrylic acid (MA). Thermal and mechanical properties of the synthesized polymers were evaluated. Among the polymers synthesized EMETCO‐ST‐MA polymer gave the highest storage modulus at ...
Source: European Journal of Lipid Science and Technology - January 31, 2018 Category: Lipidology Authors: G ökhan Çaylı, Demet Gürbüz, Adem Çınarlı Tags: Research Article Source Type: research

Improving storage stability of pistachio oil packaged in different containers by using rosemary (Rosmarinus officinalis L.) and peppermint (Mentha piperita) essential oils
In this study, the antioxidant capacity of rosemary (REO) and peppermint (PEO) essential oils along with butylated hydroxytoluene (BHT) was investigated on oxidative stability of pistachio oil packaged in glass and polyethylene terephthalate (PET). The essential oils (EOs) and their mixture were added at 1500 and 3000 ppm concentrations into the oil stored for 80 days at 60 °C under darkness. In order to evaluate the efficacy of antioxidants, peroxide value (PV), thiobarbituric acid, total phenolic compounds, oxidative stability index (OSI), conjugated dienes and trienes, free fatty acids (FFAs) and iodine value was measu...
Source: European Journal of Lipid Science and Technology - January 31, 2018 Category: Lipidology Authors: Moein Esmaeili, Sayed Amir Hossein Goli, Atefe Shirvani, Ahmad Shakerardakani Tags: Research Article Source Type: research

Determination of methyldibromoglutaronitrile (MDBGN) in skin care products by gaschromatography ‐mass spectrometry employing an Enhanced Matrix Removal (EMR) Lipid Clean‐up
Abstract A new application of QuEChERS (Quick, Easy, Cheap, Efficient, Rugged, and Safe) extraction followed by enhanced matrix removal‐lipid cleanup and GC‐MS analysis is proposed for skin care products. The method was applied to determine methyldibromo glutaronitrile (MDBGN), a preservative frequently used in cosmetic products before being banned for its allergic reactions, so as to unmask its now‐prohibited use. The new validated procedure consists in extracting the cosmetic products with acetonitrile, removing the lipid matrix and then water and solid particles from the organic mixture by two dispersive solid‐p...
Source: European Journal of Lipid Science and Technology - January 29, 2018 Category: Lipidology Authors: Fiorenza Far è, Michele Dei Cas, Sebastiano Arnoldi, Eleonora Casagni, Giacomo Luca Visconti, Giulia Parnisari, Cristiano Bolchi, Marco Pallavicini, Veniero Gambaro, Gabriella Roda Tags: Research Article Source Type: research

Obesity and male infertility: role of fatty acids in the modulation of sperm energetic metabolism
Abstract Obesity in men of reproductive age is increasing worldwide, impacting negatively on reproductive potential, sperm function and assisted reproduction outcomes. Changes in modern eating behaviors are needed to invert the negative correlation between lifestyle and sperm quality.It is known from the literature that fatty acids are able to modulate lipid metabolism by complex mechanisms involving a sequence of interdependent and cross‐regulated molecular events.Although a great deal of data is currently available on the dietary modulation of lipid metabolism, little is known about the nutritional regulation of sperm ...
Source: European Journal of Lipid Science and Technology - January 27, 2018 Category: Lipidology Authors: Alessandra Ferramosca, Mariangela Di Giacomo, Natalina Moscatelli, Vincenzo Zara Tags: Review Article Source Type: research

Solid fat content determination of dispersed lipids by time ‐domain NMR
Abstract Time domain nuclear magnetic resonance (TD‐NMR) was used to determine the solid fat content (SFC) of dispersions stabilized by a high molecular weight hydrocolloid (gum arabic, GA) containing a high melting lipid (tristearin, SSS). Since the lipid was molten prior to homogenization for the preparation of the dispersion it recrystallizes during cooling and storage. It is known that the recrystallization in a disperse system differs from bulk lipids and TD‐NMR could be a helpful tool to investigate the phenomenon. SFC measurement by TD‐NMR is well established and widely used in food science for oils, spreads a...
Source: European Journal of Lipid Science and Technology - January 27, 2018 Category: Lipidology Authors: Christina Linke, Gisela Guthausen, Eckhard Fl öter, Stephan Drusch Tags: Research Article Source Type: research

Enzymatic inter ‐esterification of binary blends containing Irvingia gabonensis seed fat to produce cocoa butter substitute
Abstract In order to investigate Irvingia gabonensis seed fat (IGF) as a potential cocoa butter alternative (CBA), its melting behavior was first compared to that of cocoa butter (CB). It was then modified by blending 90% of this fat with 10% of a liquid oil either rapeseed oil (RO) or groundnut oil (GO) or palm super olein (PSO) or Dacryodes edulis pulp oil (DPO). Those blends were then enzymatically interesterified in order to improve their melting profiles. The binary blend that showed a similar profile with CB and palm kernel stearin (PKS) was chosen as the best potential new speciality fat. Compatibility between the n...
Source: European Journal of Lipid Science and Technology - January 17, 2018 Category: Lipidology Authors: Yamoneka Wasso Juste, Malumba Paul, Lognay Georges, B éra Francois, Blecker Christophe, Danthine Sabine Tags: Research Article Source Type: research

Deacidification of Crude Hazelnut Oil Using Molecular Distillation ‐ Multiobjective Optimization for Free Fatty Acids and Tocopherol
Abstract Hazelnut oil is a good source for its high oleic acid and tocopherol contents. Since tocopherols are beneficial compounds in human diet, preservation of tocopherols in oil plays a great role in refining process. The aim of this study was to determine the optimum molecular distillation conditions for deacidification of crude hazelnut oil at which free fatty acids (FFAs) were removed while tocopherols were preserved as much as possible. A short‐path distillation column was used with evaporation temperatures ranging from 110 to 190 °C and vacuums from 0.05 to 5 mmHg for deacidification. Multiobjective optimization...
Source: European Journal of Lipid Science and Technology - January 17, 2018 Category: Lipidology Authors: Ayse Humeyra Altuntas, Onur Ketenoglu, Sena Cetinbas, Ferruh Erdogdu, Aziz Tekin Tags: Research Article Source Type: research

Thermal, mechanical, and morphological properties of rigid crude glycerol ‐based polyurethane foams reinforced with nanoclay and microcrystalline cellulose
In this study, water‐blown rigid polyurethane (PU) foams based on crude glycerol (CG) polyol were developed and halloysite nanotubes (HN) and microcrystalline cellulose (MC) with different loadings of 1.0%, 3.0% and 5.0% were incorporated to improve the performance of the foams, respectively. Effects of different loadings of HN or MC on the viscosity of CG polyols and the foaming process were investigated. CG‐based polyurethane (CGPU) foams and their foam composites (CG‐HN PU foams and CG‐MC PU foams) were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogra...
Source: European Journal of Lipid Science and Technology - January 17, 2018 Category: Lipidology Authors: Xiaoge Qi, Yongsheng Zhang, Chun Chang, Xiaolan Luo, Yebo Li Tags: Research Article Source Type: research

Optimization of novel oil extraction technique from canola seeds: lecithin ‐based microemulsion
This study introduced a novel technique using lecithin‐based microemulsion systems for extraction of edible oils from oilseeds. This technique, as a low energy consuming method, has great potency for being used as a safe and green oil extraction technique which is the developing direction for not only the dominant oil resources but also nutrient lipids which can be easily dissolvable in aqueous food and pharmaceutical formulations. (Source: European Journal of Lipid Science and Technology)
Source: European Journal of Lipid Science and Technology - January 17, 2018 Category: Lipidology Authors: Mohsen Radi, Soleiman Abbasi Tags: Research Article Source Type: research

HPLC ‐DAD, ESI–MS/MS, and NMR of Lycopene Isolated From P. guajava L. and Its Biotechnological Applications
Psidium guajava L. have been reported to be a rich source of antioxidant compounds. Its carotenoids have been highlighted by their high antioxidant capacity, which offers several benefits for human health. In this sense, lycopene isomers need to be identified. In this work, the comprehensive chemical characterization, by HPLC‐DAD, MS/MS, and NMR, of lycopene isolated from P. guajava L., antioxidant and antimicrobial activity of lycopene extracts and isolated lycopene are evaluated. The FTIR results reported a structure with Z configuration, confirmed by UV‐Vis, with λmax = 448, 473, and 505 nm for 5‐Z lycopene...
Source: European Journal of Lipid Science and Technology - January 15, 2018 Category: Lipidology Authors: Adriany G. N. Amorim, Jessica M. T. Souza, Raimunda C. Santos, Beatriz Gull ón, Ana Oliveira, Luiz F. A. Santos, Adamor L. E. Virgino, Ana C. Mafud, Helena M. Petrilli, Yvonne P. Mascarenhas, Cristina Delerue‐Matos, Manuela E. Pintado, José R. S. A. L Tags: Research Article Source Type: research