Results 71 to 80 of about 18,682 (226)

Effect of Free Fatty Acid Pretreatment to Yield, Composition and Activation Energy in Chemical Synthesis of Fatty Acid Methyl Ester

open access: yesIndonesian Journal of Chemistry, 2019
Transesterification of waste cooking oil (WCO) for fatty acid methyl ester synthesis using calcium oxide (CaO) as a catalyst with absence and presence of free fatty acid (FFA) pretreatment (untreated and pretreated) prior to reaction have been ...
Nor Saadah Mohd Alias   +3 more
doaj   +1 more source

Functional Diversity and Oleaginous Potential of Fungal Strains From Hawaiian Soil Ecosystems

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT Fungi represent an important but underexplored resource for microbial lipid production, including nutritionally valuable polyunsaturated fatty acids. Hawaiian soils, shaped by volcanic parent materials and strong environmental gradients, provide a unique setting for discovering functionally diverse fungal strains with distinct metabolic traits.
Yu Wang   +12 more
wiley   +1 more source

Penggunaan Katalis NaOH dalam Proses Transesterifikasi Minyak Kemiri menjadi Biodiesel

open access: yesJurnal Rekayasa Kimia & Lingkungan, 2011
Research on biodiesel production from hazelnut oil by transesterification process using NaOH catalyst was one of the efforts for renewable energy research.
Farid Mulana
doaj   +2 more sources

Methyl Esters Selectivity of Transesterification Reaction with Homogenous Alkaline Catalyst to Produce Biodiesel in Batch, Plug Flow, and Continuous Stirred Tank Reactors

open access: yesInternational Journal of Chemical Engineering, 2014
Selectivity concept is essential in establishing the best operating conditions for attaining maximum production of the desired product. For complex reaction such as biodiesel fuel synthesis, kinetic studies of transesterification reaction have revealed ...
N. F. Nasir   +3 more
doaj   +1 more source

Design principles for vitrimers: Linking dynamic covalent chemistry, network architecture, and engineering performance

open access: yesBulletin of the Korean Chemical Society, EarlyView.
This review examines vitrimer performance from a broader perspective, considering not only dynamic covalent chemistry but also molecular structure, network architecture, and rheological behavior. These factors are discussed in relation to service and processing windows, reprocessing, repair, and engineering applications, providing a multiscale ...
Kyosun Ku, Hyeonuk Yeo
wiley   +1 more source

Transesterifikasi Minyak Ikan Perak (Mene maculata) Dengan Katalis CaO Dari Cangkang Telur Ayam

open access: yesIndonesian Journal of Chemical Research, 2019
Silver fish (Mene maculata) is a type of pelagic fish found in the Moluccas sea, this fish has a high oil content so that it is easy to extract the oil content for transesterification.
Kartika Tahya   +2 more
doaj   +1 more source

Aptitude à la transestérification de quelques lipases régiosélectives 1-3. I. Détermination de l'activité spécifique. Comparaison entre interestérification et hydrolyse dans l'action des lipases [PDF]

open access: yes, 1988
L'activité spécifique de transestérification de 3 lipases régiosélectives 1-3 issues de 3 microorganismes différents (Candida deformans, Rhizopus arrhizus et Mucor miehei) mises en oeuvre sous différentes formes [lipase en l'état, lipase fixée (célite ...
Graille, Jean   +2 more
core  

Advances in Sustainable Production of Bio‐Derived 5‐Alkoxymethylfurfural and Levulinate Esters: A Comprehensive Review

open access: yesCarbon Energy, EarlyView.
The present review discusses the advancement in the catalytic synthesis of 5‐alkoxymethylfurfural (AMF) and levulinate esters (LEs) from the aspects of catalytic systems, reaction mechanisms, product isolation, and techno‐economic analysis, supplying valuable insights toward future sustainable and efficient manufacture of AMF and LEs. ABSTRACT The huge
Jun Zhang   +6 more
wiley   +1 more source

Synthèse et caractérisation de vitrimères de transestérification sans catalyseur

open access: yes, 2022
Vitrimers are a type of polymer materials featuring superior resistance to solvents, mechanical properties comparable to thermosets, and the ability to be reprocessed.
Cuminet, Florian
core   +1 more source

When Two Dimensions Matter: A Critical Review of Recent Comprehensive Two‐Dimensional Gas Chromatography Applications in Food Analysis

open access: yesChemFoodChem, EarlyView.
Comprehensive two‐dimensional gas chromatography (GC×GC) is gaining importance in food analysis, particularly for volatile and aroma‐related compounds. This review examines recent applications across plant‐, animal‐, and other food matrices, revealing trends in sample preparation, column selection, modulation and detection, while highlighting ...
Ana Jano   +3 more
wiley   +1 more source

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