Results 91 to 100 of about 18,164 (213)

Transestérification des acrylates par catalyse basique hétérogène [PDF]

, 2013
We present an original study of the use of solid basic catalysts in the transesterification reaction of acrylates. The reaction of ethyl acrylate with n-hexanol was chosen as model reaction. The catalysts employed, based on alumina modified with alkalin,
Maldonado Barrios, Adriana
core   +2 more sources

Characterization of Fatty Acid Profiles and Nutritional Quality Indices in Commercial Spreadable Processed Cheeses: Comparative Analysis and Health Implications

Food Safety and Health, EarlyView.
Natural processed cheeses showed a more favorable nutritional profile, including higher unsaturated fatty acids and better functional performance. A balanced fatty acid composition was identified as a key factor influencing meltability, oil separation, and overall quality of processed cheeses.
Shaimaa M. Hamdy, Amr A. Metwally, Mahmoud A. Deghedie, Hani S. Abdelmontaleb   +3 more
wiley   +1 more source

Synthesis of Methyl Ester from Microalgae Chlorella sp. TAD Using the In-Situ Transesterification Method

Jurnal Teknik Kimia dan Lingkungan
Synthesis of methyl ester from Chlorella sp. TAD microalgae was carried out using the in-situ transesterification method. This study aims to determine the methyl ester composition of Chlorella sp.
Ivon Telussa, Eirene G. Fransina, Kalsum Kalauw   +2 more
doaj   +1 more source

Transesterificação de óleos vegetais: caracterização por cromatografia em camada delgada e densidade Transesterification of vegetable oils: characterization by thin-layer cromatography and density

Química Nova, 2007
We studied the transesterification of two vegetable oils: soybean and waste frying oil. The main problem of transesterification is related to the measurement of the ethyl ester content.
Sandro Froehner, Juliana Leithold, Luiz Fernando Lima Júnior   +2 more
doaj   +1 more source

La transestérification hétérogène de l’huile de tournesol sous alumine : Production du biodiesel EEHV [PDF]

, 2012
La transestérification d’huiles végétales est une réaction catalytique homogène et hétérogène, elle est constituée par trois étapes consécutives et réversibles .Après la dernière étape on obtient un mélange d’esters : le biodiesel.
Mesbahi, Dalila
core   +1 more source

Valorisation des huiles de friture usagées en biodiesel par transestérification [PDF]

, 2020
Les déchets organiques composées essentiellement de triglycérides peuvent être convertis en biocarburant pour les moteurs. Pour cela,une adaptation des propriétés de l’huile est requise.
KHALFOUN, Seloua
core  

Higher Increases in Plasma n‐3 Polyunsaturated Fatty Acids Following Fish Oil Supplementation in Postmenopausal Females Compared With Age‐Matched Males

Lipids, EarlyView.
ABSTRACT The effects of fish oil supplementation on omega‐3 (n‐3) polyunsaturated fatty acids, particularly intermediates between eicosapentaenoic acid (EPA, 20:5n‐3) and docosahexaenoic acid (DHA, 22:6n‐3), that may provide valuable metabolic information, have not been fully characterized in older populations.
David C. R. Ku, Insaf Loukil, Annick Vachon, Mélanie Plourde, Adam H. Metherel   +4 more
wiley   +1 more source

A comparative study between chemical and enzymatic transesterification of high free fatty acid contained rubber seed oil for biodiesel production

Cogent Engineering, 2016
The choice of a paramount method for biodiesel production has significance as the demand of alternative fuels like biodiesel is growing rapidly. In the present study, experimental results from chemical-catalysed as well as enzyme-catalysed methods were ...
Jilse Sebastian, Chandrasekharan Muraleedharan, Arockiasamy Santhiagu   +2 more
doaj   +1 more source

Polymerized Pro‐Estrogen Microneedles via Two Photon Polymerization

Macromolecular Rapid Communications, EarlyView.
Acrylic pro‐drugs of 17β‐estradiol were subjected to spatially controlled two‐photon polymerization to create bespoke microneedle geometries with potential biomedical applications for long‐term transdermal hormone delivery. ABSTRACT Two‐photon polymerization (TPP) is a powerful technique to create microscale structures with high precision, offering ...
Yang Lou, John T. Leman, Harper Serringer, Ke Xia, Christopher N. LaFratta, Chaitanya Ullal, Edmund F. Palermo   +6 more
wiley   +1 more source

Recent Advances in Conductive Rubber Composites: Progress, Challenges, and Emerging Opportunities

Macromolecular Rapid Communications, EarlyView.
This study reviews the recent advances in conductive rubber composites, focusing on key aspects such as material selection, conductive mechanisms, interfacial engineering, processing methods, vulcanization strategies, and practical applications. It also discusses current challenges and highlights emerging directions that are shaping the development of ...
Lu Yin, Ali Vahidifar, Steven Yu, Boxin Zhao   +3 more
wiley   +1 more source