Results 71 to 80 of about 1,684 (196)

Comparison of glycerolysis of sardine oil by Lipozyme 435 in solvent free and SC-CO2 media [PDF]

, 2017
Ponencia presentada en: 16th European Meeting on Supercritical Fluids, 25 a 28 de abril de 2017, LisboaThe efficiency of lipase catalyzed glycerolysis of sardine oil in solvent free and supercritical carbon dioxide media has been investigated.
Beltrán Calvo, Sagrario, García Solaesa, Ángela, Illera Gigante, Alba Ester, Melgosa Gómez, Rodrigo, Sanz Díez, Mª Teresa   +4 more
core  

Sustainable polyurethane coatings derived from alkyds of Camelina oil monoglycerides

Journal of Applied Polymer Science, Volume 141, Issue 41, November 5, 2024.
This study presents the use of immobilized lipase for a low‐temperature glycerolysis reaction to produce monoglycerides. Monoglycerides were then reacted with dibasic acids to produce alkyd diols. The produced alkyd diols were incorporated into polyurethane formulations and were applied on metal substrates.
Elham Nadim, Pavan Paraskar, Mohammadnabi Hesabi, Hossein Yahyaei, Emma J. Murphy, Ian Major   +5 more
wiley   +1 more source

Reduction of free fatty acids in waste oil for biodiesel production by glycerolysis: investigation and optimization of process parameters

Green Processing and Synthesis, 2019
Influence of the process parameters for the industrially relevant reaction of free fatty acid (FFA) with glycerol is investigated. Furthermore, several drying techniques are investigated and a novel method is suggested that can provide more realistic ...
Mićić Radoslav, Tomić Milan, Martinović Ferenc, Kiss Ferenc, Simikić Mirko, Aleksic Aleksandra   +5 more
doaj   +1 more source

Synthesis of palm oil based polyol via glycerolysis and transamidation reactions for polyurethane foam production [PDF]

, 2014
Renewable sources like vegetable oil have been used to prepare many polymeric resins due to the awareness on environmental issue and depletion on petrochemical sources. In polyurethane (PU) production, petroleum-based polyols such as polypropylene glycol
A. Majid, Rohah, Abdul Halim, Khairul Azhar, Soloi, Sabrina   +2 more
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Chemical transesterification of coconut and corn oils using different metal hydroxides as catalysts to determine the chemical and physiochemical changes to the oils

Journal of the Science of Food and Agriculture, Volume 104, Issue 14, Page 8801-8812, November 2024.
Abstract BACKGROUND The transesterification of butteroil has been shown to alter its lipid chemistry and thus alter the crystallization of the fat. The reaction kinetics and resulting crystallization of the butteroil differ depending on the nature of the catalyst used.
Shoshana Rivka Ginsburg, Talia Katz, Rafael Jiménez‐Flores   +2 more
wiley   +1 more source

低温化学甘油解法制备1,3-甘油二酯工艺优化Optimization of low-temperature chemical glycerolysis process for preparation of 1, 3-diacylglycerol

Zhongguo youzhi, 2023
为制备富含1,3-甘油二酯（1,3-DAG）的甘油二酯油，以大豆油和甘油为原料，采用低温化学甘油解法制备1，3-DAG。利用单因素实验考察溶剂种类、溶剂用量、催化剂种类、催化剂用量、反应时间、反应温度对产品组成的影响，以优化工艺条件，并在最优条件下进行放大实验。结果表明：低温化学甘油解法制备1,3-DAG的最优条件为以丙酮为溶剂、溶剂与反应物质量比2∶ 1、以甲醇钠为催化剂、催化剂用量0.6%（以反应物质量计）、反应温度50 ℃、反应时间3 h；在最优条件下经验证实验，产物中甘油三酯（TAG）含量为44.
王熠璠，刘柯缨，黄雅祺，黄晔，高雅慧，王小三 WANG Yifan，LIU Keying，HUANG Yaqi，HUANG Ye， GAO Yahui，WANG Xiaosan
doaj   +1 more source

Green synthesis of highly active and recyclable chromium oxide nanocatalyst for biodiesel production from novel nonedible oil seeds

GCB Bioenergy, Volume 16, Issue 5, May 2024.
Herein, we produced biodiesel using nonedible and poisonous Phyllanthus maderaspatensis oil seeds, which have the highest seed oil content (35%), coupled with a lower free fatty acid content (0.87 mg/KOH), making them an ideal candidate for producing biodiesel.
Hadiqa Bibi, Mushtaq Ahmad, Ahmed I. Osman, Abdulaziz Abdullah Alsahli, Mamoona Munir, Ala’a H. Al‐Muhtaseb, David W. Rooney, Shazia Sultana   +7 more
wiley   +1 more source

Glicerólise de óleo de peixe catalisada por lipase comercial de Rhizomucor miehei em meio com surfactante de grau alimentício Glycerolysis of fish oil catalyzed by a commercial lipase from Rhizomucor miehei in reaction media containing food grade surfactant

Química Nova, 2013
Omega-3 enriched partial acylglycerols are beneficial for human health. The aim of this study was to obtain monoacylglycerols (MAG) and diacylglycerols (DAG) by means of glycerolysis of fish oil catalyzed by a lipase from Rhizomucor miehei in the ...
Joanna Silva Santos, Gisanara Dors, Débora de Oliveira, Soeli Francisca Mazzini Monte Blanco, José Vladimir de Oliveira, Agenor Furigo Júnior, Jorge Luiz Ninow, Maria Manuela Camino Feltes   +7 more
doaj  

Produção de Emulsionantes através da Glicerólise de Óleo de Bagaço de Azeitona Catalisada pela Lipase da Candida Rugosa Imobilizada em Espumas de Poliuretano [PDF]

, 2011
Os monoacilgliceróis (MAG) e diacilgliceróis (DAG) são dos emulsionantes mais utilizados na indústria alimentar e farmacêutica. Neste trabalho pretendeu-se selecionar preparações enzimáticas imobilizadas adequadas à biocatálise da glicerólise ...
Correia, Ana Cristina Vilas Boas, Ferreira‐Dias, Maria Suzana Leitão, Fonseca, Maria Manuela Regalo   +2 more
core  

Regiospecific analysis of Mono and Diglycerides in Glycerolysis products by GC x GC TOF-MS. [PDF]

, 2010
Comprehensive bidimensional gas chromatography coupled with time-of-flight mass spectrometry (GC × GC-TOF-MS) was used for the characterization of regiospecific mono- and diglycerides (MG-DG) content in the glycerolysis products derived from five ...
A Bareth, C Chifuntwe, CE Stauffer, Dias Indrasti, Dzulkifly Mat Hashim, E Pedro De, GC Lee, H Noureddini, J Dalluge, KA Fliszar, L Deng, LM Blumberg, M Junge, Marina Abdul Manaf, MC Perez-Camino, MS Klee, NOV Sonntag, O Koprivnjak, P Fagan, Shuhaimi Mustafa, ST Chin, Sung Tong Chin, T Yang, V Ruiz-Gutierrez, VA Isidorov, Yaakob B. Che Man   +25 more
core   +1 more source