Esters-buliding-blocks

Capozzi, Vittorio published the artcileImpact of co-inoculation of Saccharomyces cerevisiae, Hanseniaspora uvarum and Oenococcus oeni autochthonous strains in controlled multi starter grape must fermentations, Recommanded Product: Ethyl octanoate, the main research area is Saccharomyces Hanseniaspora Oenococcus grape must fermentation enol technol property.

The use of multi-species starter cultures is an approach of increasing significance for winemakers in order to improve the general quality and safety of the final product. As first step of the present study, we isolated and characterize two Saccharomyces cerevisiae yeast starter strains, denoted as ITEM 167292 and ITEM 17293, from natural must fermentations of “”Negroamaro”” grapes. As second step, we studied the interactions during grape must fermentation between these two strains, the Hanseniaspora uvarum strain ITEM 8785 and five autochthonous Oenococcus oeni strains, by microbial counts and by quantifying L-malic acid and ethanol concentrations The best performing O. oeni strain, namely OT4, was used to create, with the H. uvarum strain ITEM 8785, two mixed starter formulations with the strains ITEM 167292 and ITEM 17293. The three microbial species showed to be compatible and to complete the fermentative processes producing wines denoted by reduced acetic acid concentrations The performance of the mixed starter formulations were then validated by carrying pilot-scale vinifications. At the best of our knowledge, this report is the first study regarding the utilization of selected H. uvarum/S. cerevisiae/O. oeni autochthonous strains in a simultaneous multi-starter inoculation for the industrial production of regional typical wines.

LWT–Food Science and Technology published new progress about Grape. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Recommanded Product: Ethyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Buras, Zachary J. published the artcileSimulated production of OH, HO2, CH2O, and CO2 during dilute fuel oxidation can predict 1st-stage ignition delays, Quality Control of 110-42-9, the main research area is hydroxyl hydroperoxo formaldehyde fuel oxidation autoignition plug flow reactor.

Chem. kinetics simulations are used to explore whether detailed measurements of relevant chem. species during the oxidation of very dilute fuels (less than 1 Torr partial pressure) in a high-pressure plug flow reactor (PFR) can predict autoignition propensity. We find that for many fuels the timescale for the onset of spontaneous oxidation in dilute fuel/air mixtures in a simple PFR is similar to the 1st-stage ignition delay time (IDT) at stoichiometric engine-relevant conditions. For those fuels that deviate from this simple trend, the deviation is closely related to the peak rate of production of OH, HO2, CH2O, and CO2 formed during oxidation We use these insights to show that an accurate correlation between simulated profiles of these species in a PFR and 1st-stage IDT can be developed using convolutional neural networks. Our simulations suggest that the accuracy of such a correlation is 10-50%, which is appropriate for rapid fuel screening and may be sufficient for predictive fuel performance modeling.

Combustion and Flame published new progress about Fuels. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Quality Control of 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Cazares-Samaniego, Paulina J. published the artcileVolatilome and Essential Oil of Ulomoides dermestoides: A Broad-Spectrum Medical Insec, Category: esters-buliding-blocks, the main research area is Ulomoides volatilome essential oil; GC-MS; HS-SPME; PBET; Ulomoides dermestoides; VOCs; essential oils; insect.

Ulomoides dermestoides are used as a broad-spectrum medical insect in the alternative treatment of various diseases. Preliminary volatilome studies carried out to date have shown, as the main components, methyl-1,4-benzoquinone, ethyl-1,4-benzoquinone, 1-tridecene, 1-pentadecene, and limonene. This work focused on the production of metabolites and their metabolic variations in U. dermestoides under stress conditions to provide addnl. valuable information to help better understand the broad-spectrum medical uses. To this end, VOCs were characterized by HS-SPME with PEG and CAR/PDMS fibers, and the first reported insect essential oils were obtained. In HS-SMPE, we found 17 terpenes, six quinones, five alkenes, and four aromatic compounds; in the essential oils, 53 terpenes, 54 carboxylic acids and derivatives, three alkynes, 12 alkenes (1-Pentadecene, EOT1: 77.6% and EOT2: 57.9%), 28 alkanes, nine alkyl disulfides, three aromatic compounds, 19 alcs., three quinones, and 12 aldehydes were identified. Between both study approaches, a total of 171 secondary metabolites were identified with no previous report for U. dermestoides. A considerable number of the identified metabolites showed previous studies of the activity of pharmacol. interest. Therefore, considering the wide variety of activities reported for these metabolites, this work allows a broader vision of the therapeutic potential of U. dermestoides in traditional medicine.

Molecules published new progress about Drugs. 6259-76-3 belongs to class esters-buliding-blocks, name is Hexyl 2-hydroxybenzoate, and the molecular formula is C13H18O3, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Jimenez Saelices, Clara published the artcileSynthesis of latex stabilized by unmodified cellulose nanocrystals: the effect of monomers on particle size, Name: Dodecyl 2-methylacrylate, the main research area is cellulose nanocrystal stabilized polymer latex nanocomposite suspension polymerization property.

Cellulose nanocrystals (CNCs) are sustainable rod-shaped nanoparticles able to adsorb at oil-water interfaces to produce highly stable Pickering emulsions with enhanced mech. properties. Polymerization of the CNC-stabilized monomer droplets is investigated in detail to elucidate the synthesis mechanism of both micro- and nanoparticles of latex in relationship with the initial sizes of the droplets. It is shown in this study that unmodified CNCs, used as a sole stabilizer, are efficient to produce both monomer-in-water Pickering emulsion and nanocomposite latex particles with controlled dimensions. For the initial liquid emulsion of styrene, two populations of droplets were observed: micrometric droplets with diameters that decrease down to 5 μm with increasing CNC concentrations, and nanometric droplets with a diameter distribution ranging from 500 nm to 2 μm for all CNC concentrations It leads to two distinct populations of polystyrene latex particles by polymerization in aqueous dispersed media, i.e. microparticles of 5-18 μm and nanoparticles with an average diameter below 1 μm. The polymerization of various monomers, i.e. styrene, lauryl methacrylate, isobornyl acrylate, Bu methacrylate, and Me methacrylate, in the presence of different initiators indicated that the solubility of the monomer in the aqueous continuous phase is the key parameter to tune the size distribution of the latex particles. Nanocomposite CNC-stabilized waterborne latexes were prepared from polymers with different glass transition temperatures

Polymer Chemistry published new progress about Drops. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Name: Dodecyl 2-methylacrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Biendl, Stefan published the artcileDiscovery of novel antischistosomal scaffolds from the open access Pandemic Response Box, Product Details of C12H9N3O5S, the main research area is antischistosomal scaffold pandemic response box schistosomiasis praziquantel; Anthelminthics; Pandemic Response Box; Schistosoma mansoni; drug discovery; drug repurposing; schistosomiasis.

BackgroundTreatment and control of schistosomiasis rely on a single drug, praziquantel. New orally active antischistosomals featuring novel mol. scaffolds are urgently needed to prevent the emergence of resistance. MethodsWe screened 400 drug-like compounds contained in the open-access Pandemic Response Box (PRB) against newly transformed schistosomula (NTS) at a concentration of 10 μM scoring death, changes in motility, and morphol. alterations. Compounds displaying an activity ≥66% at 72 h underwent testing against adult Schistosoma mansoni in vitro. Fast-acting (≥66% at 24 h), nontoxic drugs focusing on late-stage and approved drugs were investigated in the patent S. mansoni mouse model. ResultsWe identified 26 hits active against NTS, of which 17 elicited ≥66% activity against adult S. mansoni following 24 h of drug exposure. The highest activity against adult S. mansoni was observed with MMV1581558 (EC50 value of 0.18 ± 0.01 μM) and nitazoxanide (0.47 ± 0.07 μM). Of the five compounds tested in vivo, MMV1581558 and the approved drug ozanimod reduced average worm burden vs. controls by 42 % and 36 %, resp., after a single oral dose of 200 mg/kg bodyweight in mice harboring a chronic S. mansoni infection. ConclusionMMV1581558 discovered from screening the PRB represents a novel antischistosomal scaffold with high in vitro antischistosomal activity amenable to chem. modification for drug development.

Expert Review of Anti-Infective Therapy published new progress about Death. 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Product Details of C12H9N3O5S.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Liu, Zhenyang published the artcileQuality and volatile compound analysis of shrimp heads during different temperature storage, Application of Methyl octanoate, the main research area is Litopenaeus heads volatile compound temperature storage quality; E-nose; Quality; SPME-GC/MS; Shrimp heads; Volatile compounds.

This study aimed to investigate volatile compounds and quality traits of shrimp heads stored at 20°C, 4°C, -3°C, and -18°C. With increased storage time, sensory scores gradually decreased, while pH and TVB-N content showed a gradually increase trend. L* showed a decreasing and then increasing tendency. The radar chart and principal component anal. showed variation changes. Three compounds including 2-decanone, di-Me disulfide and di-Me tetrasulfide, four compounds including 2-pentanone, 3-methyl-1-butanol, 2-methylbutyric acid, and 2,3,5-trimethylpyrazine, and 3-methylbutyraldehyde were the characteristic volatiles for the samples stored at 20°C, 4°C, and -3°C, resp. Twenty-five volatile compounds were key volatile compounds, among which nine were potential classification compounds with high variable importance in projection values. Trimethylamine and 2-nonanol were selected as potential markers of spoilage. The study provides the theor. basis for quality and volatile compound investigations for shrimp heads with further high-quality utilization.

Food Chemistry: X published new progress about Color. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Liu, Zhenyang published the artcileQuality and volatile compound analysis of shrimp heads during different temperature storage, Category: esters-buliding-blocks, the main research area is Litopenaeus heads volatile compound temperature storage quality; E-nose; Quality; SPME-GC/MS; Shrimp heads; Volatile compounds.

This study aimed to investigate volatile compounds and quality traits of shrimp heads stored at 20°C, 4°C, -3°C, and -18°C. With increased storage time, sensory scores gradually decreased, while pH and TVB-N content showed a gradually increase trend. L* showed a decreasing and then increasing tendency. The radar chart and principal component anal. showed variation changes. Three compounds including 2-decanone, di-Me disulfide and di-Me tetrasulfide, four compounds including 2-pentanone, 3-methyl-1-butanol, 2-methylbutyric acid, and 2,3,5-trimethylpyrazine, and 3-methylbutyraldehyde were the characteristic volatiles for the samples stored at 20°C, 4°C, and -3°C, resp. Twenty-five volatile compounds were key volatile compounds, among which nine were potential classification compounds with high variable importance in projection values. Trimethylamine and 2-nonanol were selected as potential markers of spoilage. The study provides the theor. basis for quality and volatile compound investigations for shrimp heads with further high-quality utilization.

Food Chemistry: X published new progress about Color. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Na, Li published the artcileAdjustment of impact odorants in Hutai-8 rose wine by co-fermentation of Pichia fermentans and Saccharomyces cerevisiae, Related Products of esters-buliding-blocks, the main research area is Pichia Saccharomyces rose wine odorant; Aroma active compounds; Aroma characteristics; Citronellol (PubChem CID:8842); Ethyl acetate (PubChem CID: 8857); Ethyl butyrate (PubChem CID: 77632); Ethyl decanoate (PubChem CID: 8048); Ethyl heptanoate (PubChem CID: 7797); Ethyl hexanoate (PubChem CID: 31265); Ethyl octanoate (PubChem CID: 7799); Hutai-8 grape; Isoamyl acetate (PubChem CID: 31276); Isobutyl alcohol (PubChem CID: 6560); Key aroma compounds; Mixed fermentation; Nerolidol (PubChem CID:5284507; Phenethyl acetate (PubChem CID: 7654); Single fermentation; β-Damascenone (PubChem CID: 5366074).

Hutai-8 grape (Vitis vinifera x Vitis labrusca) was fermented into rose wine with Saccharomyces cerevisiae to characterize the key aroma compounds by sensomics approach, and fermented with selected Pichia fermentans and S. cerevisiae for aroma enhancement. In total, 82 odorants were detected in single-fermentation Hutai-8 rose wine, 22 aroma active compounds, mainly varietal odorants and fruity esters, were further quantitated for aroma reconstitution tests, and successfully mimicked sweet, floral, and fruity traits. Omission tests excluded the importance of iso-Bu acetate, Et butyrate, 1-nonanol for aroma development. Furthermore, the successfully recombined co-fermentation Hutai-8 rose wine revealed 21 aroma active compounds identified from 79 odorants. The complexity of wine fruity/floral characteristics was improved through increased levels of inactive odorants and decreased levels of off-odorants. Moreover, rose wine made by co-inoculation had greater color stability compared to single-fermentation This work provides insights into the understanding of mechanisms underlying modulation of co-fermentation for improved wine quality.

Food Research International published new progress about Color. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Related Products of esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Na, Li published the artcileAdjustment of impact odorants in Hutai-8 rose wine by co-fermentation of Pichia fermentans and Saccharomyces cerevisiae, Safety of Methyl octanoate, the main research area is Pichia Saccharomyces rose wine odorant; Aroma active compounds; Aroma characteristics; Citronellol (PubChem CID:8842); Ethyl acetate (PubChem CID: 8857); Ethyl butyrate (PubChem CID: 77632); Ethyl decanoate (PubChem CID: 8048); Ethyl heptanoate (PubChem CID: 7797); Ethyl hexanoate (PubChem CID: 31265); Ethyl octanoate (PubChem CID: 7799); Hutai-8 grape; Isoamyl acetate (PubChem CID: 31276); Isobutyl alcohol (PubChem CID: 6560); Key aroma compounds; Mixed fermentation; Nerolidol (PubChem CID:5284507; Phenethyl acetate (PubChem CID: 7654); Single fermentation; β-Damascenone (PubChem CID: 5366074).

Hutai-8 grape (Vitis vinifera x Vitis labrusca) was fermented into rose wine with Saccharomyces cerevisiae to characterize the key aroma compounds by sensomics approach, and fermented with selected Pichia fermentans and S. cerevisiae for aroma enhancement. In total, 82 odorants were detected in single-fermentation Hutai-8 rose wine, 22 aroma active compounds, mainly varietal odorants and fruity esters, were further quantitated for aroma reconstitution tests, and successfully mimicked sweet, floral, and fruity traits. Omission tests excluded the importance of iso-Bu acetate, Et butyrate, 1-nonanol for aroma development. Furthermore, the successfully recombined co-fermentation Hutai-8 rose wine revealed 21 aroma active compounds identified from 79 odorants. The complexity of wine fruity/floral characteristics was improved through increased levels of inactive odorants and decreased levels of off-odorants. Moreover, rose wine made by co-inoculation had greater color stability compared to single-fermentation This work provides insights into the understanding of mechanisms underlying modulation of co-fermentation for improved wine quality.

Food Research International published new progress about Color. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Safety of Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Englezos, Vasileios published the artcileEffect of mixed species alcoholic fermentation on growth and malolactic activity of lactic acid bacteria, Synthetic Route of 106-32-1, the main research area is lactobacillus oenococcus growth malolactic alc fermentation; Interactions; Lactobacillus plantarum; Malolactic fermentation; Oenococcus oeni; Saccharomyces cerevisiae; Starmerella bacillaris.

In recent years, there is an increasing interest from the winemaking industry for the use of mixed fermentations with Starmerella bacillaris (synonym Candida zemplinina) and Saccharomyces cerevisiae, due to their ability to modulate metabolites of oenol. interest. The current study was carried out to elucidate the effect of this fermentation protocol on the growth and malolactic activity of lactic acid bacteria (LAB) used for malolactic fermentation (MLF) and on the chem. and volatile profile of Nebbiolo wines and their chromatic characteristics. To this end, two LAB species, namely Lactobacillus plantarum and Oenococcus oeni, were inoculated at the beginning and at the end of the alc. fermentation (AF) performed by pure and mixed yeast using the abovementioned yeasts. The different yeast inoculation protocols and the combination of species tested influenced greatly the interactions and behavior of the inoculated yeasts and LAB during AF and MLF. For both LAB species, inoculation timing was critical to how rapidly MLF started and finished. Fermentation inoculated with L. plantarum, at the beginning of the AF, completed MLF faster than those inoculated with O. oeni. The presence of Starm. bacillaris in mixed fermentation promoted LAB growth and activity, in particular, O. oeni. Furthermore, LAB species choice had a greater impact on the volatile and chromatic profile of the wines than inoculation time. These findings reveal new knowledge about the importance of LAB species choice and inoculation time to ensure fast MLF completion and to improve wine characteristics in mixed fermentation with Starm. bacillaris and S. cerevisiae.

Applied Microbiology and Biotechnology published new progress about Color. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Synthetic Route of 106-32-1.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics