Results 41 to 50 of about 2,593,431 (288)

Optimization of chemical esterification process of saponificated and acidulated soybean oil deodorizer distillate

open access: yesGrasas y Aceites, 2002
In this research work, it was optimized the reaction conditions for the chemistry esterification of unsaponifiable matter in soybean oil deodorizer distillate. The process involves (i) alkaline hydrolysis of saponifiable matter; (ii) acidulation of soaps
Nara Lúcia Facioli   +1 more
doaj   +1 more source

Synthesis and Study of Some fused Substituted 1,3,4-Thiadiazoles and 1,2,4-Triazoles from 4-Chloro- phenoxy acetic acid and 2,4-dichlorophenoxy acetic acid [PDF]

open access: yesمجلة التربية والعلم, 2020
In this work the synthesis of some substituted 1,2,4-triazoles and five ring system's reported. 2-(4-Chlorophenoxy) acetic acid (S1) was synthesis from corresponding substituted phenol by its reaction with chloroacetic acid in sodium hydroxide solution ...
Mudhar Othman
doaj   +1 more source

Otimização da síntese de ésteres usados na indústria de sabores e aromas [PDF]

open access: yes, 2008
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.Ésteres constituem uma das classes de substâncias químicas largamente encontradas na natureza.
MEDEIROS, Camilla Rigoni
core  

Water‐Compatible SuFEx‐Active Diazonium Linchpin Platform for Rapid Modular Diversification and On‐DNA Functionalization

open access: yesAdvanced Functional Materials, EarlyView.
Sulfur fluoride exchange (SuFEx) is a powerful click platform, yet water‐compatible multifunctional linchpins remain elusive. Here, we report decagram‐scalable diazonium linchpins that enable rapid Pd‐catalyzed diversification and direct, catalyst‐free on‐DNA ligation in aqueous media.
Seok Ju Hong   +5 more
wiley   +1 more source

Mono‐Material Polydisulfides for Pressure Sensitive Adhesive Tapes With Closed‐Loop Recyclability

open access: yesAdvanced Functional Materials, EarlyView.
A high‐performance pressure‐sensitive adhesive (PSA) tape is developed where both the adhesive layer and plastic backing layer can be recycled back to monomer in a closed‐loop cycle. Both layers of the tape are composed of analogous polydisulfide copolymers using only two unique monomers, thus giving it a mono‐material design and enabling recycling of ...
Woojung Ham   +3 more
wiley   +1 more source

Considerations about the in situ derivatization and fractionation of EFA and NEFA in biological and food samples

open access: yesMethodsX, 2015
Despite their important role in tissues, fluids and foods, the analysis of non-esterified fatty acids (NEFA) as methyl esters (NEFAME) is performed using expensive, cumbersome and time-consuming procedures that needs of isolation, fractionation and ...
Lígia L. Pimentel   +3 more
doaj   +1 more source

Preferential Interfacial Engineering of Hydrogels via Interdigitated Nanoparticle Assembly

open access: yesAdvanced Functional Materials, EarlyView.
Robust surface functionalization of hydrogel surfaces is performed via interdigitated metal nanoparticle assembly, inducing strong affinity with the hydrogel matrix. The partially exposed nanoparticle domains act as interfacial nanobridges that mediate both chemical and physical bonding with diverse materials, including small molecules, fluorous ...
Hyeonjin Kim   +11 more
wiley   +1 more source

Selection of oleaginous yeasts isolated from sugarcane bagasse as the potential producers of single cell oils and other metabolites

open access: yesAnnals of Microbiology, 2023
Purpose The microorganisms that possess diverse and improved traits for biotechnological applications provide an opportunity to address some of the current industrial challenges such as the sustainability of fuel energy and food.
Lesetja M. Legodi, Kgabo L. M. Moganedi
doaj   +1 more source

Modelling microscopic clusters of sulphuric acid and water relevant to atmospheric nucleation [PDF]

open access: yes, 2015
Classical nucleation theory has been a useful tool for predicting the phenomena of nucleation for the past seventy years. However the model has several limitations, which in some examples give rise to predicted rates that are several orders of magnitude ...
Stinson, J
core  

Charge‐Polarized Ni─S4 Single‐Atom Sites Drive Selective Photoreforming of Poly(lactic acid) to Lactate and Hydrogen

open access: yesAdvanced Functional Materials, EarlyView.
Atomically dispersed Ni–S4 sites on CdS nanorods induce interfacial charge polarization, directing photogenerated electrons to H2 evolution and holes to selective ester‐bond cleavage of poly(lactic acid). Without sacrificial reagents, this charge‐coupled system produces lactate while suppressing overoxidation, achieving an H2 evolution rate of 41.74 ...
Yu Yao   +8 more
wiley   +1 more source

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