Results 1 to 10 of about 26,673 (162)

Does glucose affect the de‐esterification of methyl ferulate by Lactobacillus buchneri? [PDF]

open access: yesMicrobiologyOpen, 2020
Silage, the fermented product from anaerobic storage of forage crops with high water contents (50%–70%), is normally used as animal feed but also for the production of biofuels and value‐added products.
Kamyar Mogodiniyai Kasmaei   +3 more
doaj   +5 more sources

Impacts of ultrasound-assisted Fenton degradation and alkaline de-esterification on structural properties and biological effects of pectic polysaccharides from Tartary buckwheat leaves [PDF]

open access: yesUltrasonics Sonochemistry
Tartary buckwheat (Fagopyrum tataricum (L.) Gaertn) leaf has abundant rhamnogalacturonan-I enriched pectic polysaccharides, which exert various health-promoting effects.
Wen-Bing Li   +9 more
doaj   +2 more sources

Hydrolysis of Acetamide on Low-Index CeO2 Surfaces: Ceria as a Deamidation and General De-esterification Catalyst. [PDF]

open access: yesACS Catal, 2022
Using DFT calculations and acetamide as the main example, we show that ceria is a potential catalyst for the hydrolysis of amide and similar bonds. The overall reaction is endergonic in the gas phase, yielding acetic acid and ammonia, but is slightly exergonic in the aqueous phase, which facilitates ionization of the products (CH3COO- and NH4 ...
Bhasker-Ranganath S, Xu Y.
europepmc   +3 more sources

Iodine-catalyzed green and efficient synthesis of secondary and tert-esters of N-acetyl-protected amino acids [PDF]

open access: yesRSC Advances
Esterification of amino acids is a critical transformation in synthetic and peptide chemistry. In this study, a green and effective I2-catalyzed method was developed for the esterification of N-acetyl protected amino esters and their hydrolysis. It is an
Ghazala Razaq Abbasi   +5 more
doaj   +2 more sources

Mild ultrasound-assisted alkali de-esterification modified pectins: Characterization and structure–activity relationships in immunomodulatory effects [PDF]

open access: yesUltrasonics Sonochemistry
Apple pectin (AP), a well-established dietary fiber, offers significant health benefits, particularly in immunomodulation. However, the structure–activity relationship (SAR) in this context remains poorly understood.
Huan Guo   +7 more
doaj   +2 more sources

Hydrolytic efficiency and isomerization during de-esterification of natural astaxanthin esters by saponification and enzymolysis

open access: yesElectronic Journal of Biotechnology, 2018
Background: Astaxanthin from natural sources is typically esterified with fatty acids; hence, it must be hydrolyzed to remove esters before identification and quantification by conventional HPLC.
Fang Su   +4 more
doaj   +2 more sources

The thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate) [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
The non-oxidative thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate) was investigated by studying changes in the polymer residue.
IVANKA G. POPOVIC   +2 more
doaj   +3 more sources

Response Surface Methodology and Artificial Neural Networks (ANNs) (RSM) Pectin Extraction from Banana Peel: A Modeling and Optimization Approach [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2022
In the present study, the extraction of pectin from the banana peel (Musa sp.) was optimized using an artificial neural network and response surface methodology on the yield and degree of esterification obtained using microwave-assisted extraction ...
Ermias Girma
doaj   +1 more source

Evaluation of the physicochemical properties of pectin extracted from Musa paradisiaca banana peels at different pH conditions in the formation of nanoparticles

open access: yesHeliyon, 2021
Colombia is one of the major producers and exporters of banana Musa paradisiaca. Its consumption is high then its agro-industrial wastes are important source to extract pectin.
David Arias   +3 more
doaj   +1 more source

Effects of de‐esterification treatment of lemon pectin on its stable capability against protein precipitation in acidified milk drinks

open access: yeseFood, 2023
In this work, we extracted pectin from lemon peel and used pectin methyl‐esterase (PME) to obtain pectins with different degree of methyl esterification (DM).
Liandi Liu   +5 more
doaj   +1 more source

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