Category: esters-buliding-blocks

Zhu, Li-Xia published the artcileCombined indigenous yeast strains produced local wine from over ripen Cabernet Sauvignon grape in Xinjiang, Recommanded Product: Methyl decanoate, the main research area is wine Cabernet Sauvignon grape ripen Saccharomyces China; Cabernet Sauvignon; Co-fermentation; Over ripen; Wine; Xinjiang.

Cabernet Sauvignon grape produced in Xinjiang (China) is often overripe, with unusually high sugar content, which impedes utilization. We aimed to establish the optimal combination of indigenous yeast strains to produce a new sweet wine from the overripe grape. Five yeast strains with pronounced enol. characteristics were selected from 88 indigenous yeast isolates. Using a series of co-fermentation experiments with different inoculated strategies, we achieved optimal co-fermentation with a combination of strains SC19 and NS68, later identified as Saccharomyces cerevisiae and Pichia kudriavzevii, resp., simultaneously inoculated in a 1:1 ratio at the early stage of fermentation The combination was characterized by vigorous fermentation with high resistance to 457.13 g/L sugar and high alc. yield (16.01% vol). The sweet wine contained 17 aromatic compounds with odor activity value (OAV) ≥ 1 and pronounced sweet fruit, floral, herbaceous, and caramel odors. The co-fermentation has a good potential for utilization of overripe Cabernet Sauvignon grape.

World Journal of Microbiology & Biotechnology published new progress about Alcohols Role: FFD (Food or Feed Use), BIOL (Biological Study), USES (Uses). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Recommanded Product: Methyl decanoate.

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

Luganini, Anna published the artcileThe isoquinoline alkaloid berberine inhibits human cytomegalovirus replication by interfering with the viral Immediate Early-2 (IE2) protein transactivating activity., Application of 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, the main research area is HCMV virus replication IE2 isoquinoline alkaloid berberine; Berberine chloride; Human cytomegalovirus; IE2; IE3; Murine cytomegalovirus; Promoter transactivation.

The identification and validation of new small mols. able to inhibit the replication of HCMV remains a priority to develop alternatives to the currently used DNA polymerase inhibitors, which are often burdened by long-term toxicity and emergence of cross-resistance. Low micromolar concentrations of BBR were confirmed to suppress the replication of different HCMV strains, including clin. isolates and strains resistant to approved DNA polymerase inhibitors. Anal. of the HCMV replication cycle in infected cells treated with BBR then revealed that the bioactive compound compromised the progression of virus cycle at a stage prior to viral DNA replication and Early (E) genes expression, but after Immediate-Early (IE) proteins expression. Mechanistic studies in fact highlighted that BBR interferes with the transactivating functions of the viral IE2 protein, thus impairing efficient E gene expression and the progression of HCMV replication cycle. Finally, the mechanism of the antiviral activity of BBR appears to be conserved among different CMVs, since BBR suppressed MCMV replication and inhibited the transactivation of the prototypic MCMV E1 gene by the IE3 protein, the murine homolog of IE2. Together, these observations warrant for further experimentation to obtain proof of concept that BBR could represent an attractive candidate for alternative anti-HCMV therapeutic strategies.

Antiviral Research published new progress about Alkaloids Role: THU (Therapeutic Use), BIOL (Biological Study), USES (Uses). 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, Application of 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate.

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

Widayat, Tiandi published the artcileMetabolite profiles of agarwood Gyrinops versteegii (Gilg) domke leaves collected from Different locations, Formula: C17H34O2, the main research area is agarwood Gyrinops leaf antioxidant antimalaria antiproliferationn agent.

The leaves of Gyrinops versteegii, an agarwoodproducing plant, are reported to have many benefits, including antioxidant, anti-malaria and an antiproliferation activity against several cancer cell lines. The plants originate from the Eastern part of Indonesia and are now cultivated for resin production in several parts of Indonesia. Secondary metabolites are known to be highly influenced by environmental factors. This study was conducted to evaluate the effect of different planting locations on the leave metabolite profiles of G. versteegii. Leaf samples were collected from two different locations, Bogor Botanical Gardens, West Java and Research and Development Institute of Technol. Non-Timber Forest Product Mataram, Lombok Island. Samples were extracted by maceration overnight with non-polar to polar solvents of chloroform, Et acetate and ethanol at a ratio of 1:13 (w/v). The extracts were air-dried and then analyzed using GC-MS. The chromatograms were further processed for confirmation of the metabolites content. The metabolite profiles were compared using multivariate anal. in SIMCA P software and significant differences were confirmed with a t-test. The Bogor sample′s metabolite profile was different from the Mataram sample, specifically fifteen compounds including fatty acids, monoterpenes, sesquiterpenes and triterpenes. This difference may be due to the different soil composition between the two locations. The soil in Bogor had higher concentrations of K and Mn, but lower N and Ca compared to the Mataram soil. The different location was confirmed by the metabolite profiles of agarwood leaves and the G. versteegii leaves from Bogor are different from those from Mataram.

Research Journal of Biotechnology published new progress about Alkanes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 41114-00-5 belongs to class esters-buliding-blocks, name is Ethyl pentadecanoate, and the molecular formula is C17H34O2, Formula: C17H34O2.

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

Baranauskiene, Renata published the artcileValorisation of Roman chamomile (Chamaemelum nobile L.) herb by comprehensive evaluation of hydrodistilled aroma and residual non-volatile fractions, HPLC of Formula: 110-42-9, the main research area is Chamaemelum nobile hydrodistilled aroma nonvolatile fraction valorisation; Antioxidant capacity; Chamaemelum nobile L.; Deodorized acetone extract; Essential oil; Growth phases; Water extract.

Valorization of botanicals for the development of natural food-grade ingredients is an important task in terms of sustainability and processing waste reduction In this study, Roman chamomile (Chamaemelum nobile L.) herb was collected at six different vegetation phases in the period 26 May – 23 August 2019 and subjected to biorefining into the several valuable fractions. The yield of hydro-distilled essential oil (EO) was in the range of 0.22% (intensive vegetative growth) to 0.80% (full flowering). Angelic, isobutyric, butyric and methacrylic acid esters and some monoterpene and sesquiterpene derivatives were the major EO constituents: 3-methylpentyl angelate (20.11-27.56%), methallyl angelate (7.28-10.33%), isoamyl angelate (5.57-9.02%), iso-Bu angelate (4.84-6.79%), 2-methylbutyl angelate (3.11-6.32%), 3-methylamyl methacrylate (5.04-6.17%), 3-methylpentyl isobutyrate (4.29-6.64%), 3-methylamyl isobutyrate (4.29-6.64%), α-pinene (1.61-6.37%) and pinocarvone (1.46-4.67%). In order to valorize water soluble and solid EO distillation residues their antioxidant potential was evaluated by several in vitro assays: water extracts were considerably stronger antioxidants than acetone extracts isolated from the solid residues. Water extracts of the plants collected at flowering phases were the strongest antioxidants; their TPC, FRAP and ORAC values were up to 143.2 mg gallic acid equivalent/g, 650, and 5601 μmol TE/g dry extract, resp., while effective concentrations (EC50) of DPPH• and ABTS•+ scavenging, were down to 0.59 and 0.49 mg/mL, resp. Among 7 tentatively identified by UPLC/Q-TOF/MS phenolic constituents the intensity of mol. ion of 3,5-dicaffeoyl quinic acid was the largest. The results obtained may assist for developing flavorings, antioxidants and health beneficial preparations from C. nobile extracts

Food Research International published new progress about Alkanes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, HPLC of Formula: 110-42-9.

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

de Aquino, Adriana M. published the artcileEvaluation of molecular properties of humic acids from vermicompost by 13 C-CPMAS-NMR spectroscopy and thermochemolysis-GC-MS, Safety of Methyl docosanoate, the main research area is carbon vermicompost humic acid thermochemolysis GCMS CPMAS NMR spectroscopy.

The mol. characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC-MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of mol. parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific mol. features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the mol. quality of natural organic matter. The detailed mol. characterization of compost materials may hence represent a useful requirement to select the most suitable application of bulk biomasses and derived fractions for soil organic matter managements.

Journal of Analytical and Applied Pyrolysis published new progress about Alkanes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Safety of Methyl docosanoate.

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

Zhu, Qing published the artcileChemical Composition and Antimicrobial Activity of the Essential Oil From Euphorbia helioscopia L., Formula: C11H22O2, the main research area is Euphorbia helioscopia essential oil antimicrobial activity chem composition.

The chem. composition and antimicrobial activity of the essential oil from the aerial parts of Euphorbia helioscopia L. were investigated by gas chromatog.-mass spectrometry (GC-MS), GC, and microdilution methods. Thirty-five compounds, representing 83.51% of the total oil, were identified. 1,6-Dihydrocarveol (31.39%), carvone (16.79%), menthol (8.23%), and trans-dihydrocarvone (5.53%) were the principal constituents of the oil. The essential oil exhibited strong antimicrobial activity against strains of the bacteria, Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Shigella dysenteriae, and a strain of the fungus Candida albicans with a minimal inhibitory concentration value of 31.25μg/mL and min. bactericidal concentration values of 31.25μg/mL (S. aureus), 62.50μg/mL (E. faecalis), >62.50μg/mL (E. coli), >62.50μg/mL (S. dysenteriae), and >62.50μg/mL (C. albicans). These results indicated that the essential oil from the aerial parts of E. helioscopia could be used to control diseases caused by these microbes.

Natural Product Communications published new progress about Alkenes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Formula: C11H22O2.

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

Zhu, Qing published the artcileChemical Composition and Antimicrobial Activity of the Essential Oil From Euphorbia helioscopia L., Safety of Ethyl pentadecanoate, the main research area is Euphorbia helioscopia essential oil antimicrobial activity chem composition.

The chem. composition and antimicrobial activity of the essential oil from the aerial parts of Euphorbia helioscopia L. were investigated by gas chromatog.-mass spectrometry (GC-MS), GC, and microdilution methods. Thirty-five compounds, representing 83.51% of the total oil, were identified. 1,6-Dihydrocarveol (31.39%), carvone (16.79%), menthol (8.23%), and trans-dihydrocarvone (5.53%) were the principal constituents of the oil. The essential oil exhibited strong antimicrobial activity against strains of the bacteria, Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Shigella dysenteriae, and a strain of the fungus Candida albicans with a minimal inhibitory concentration value of 31.25μg/mL and min. bactericidal concentration values of 31.25μg/mL (S. aureus), 62.50μg/mL (E. faecalis), >62.50μg/mL (E. coli), >62.50μg/mL (S. dysenteriae), and >62.50μg/mL (C. albicans). These results indicated that the essential oil from the aerial parts of E. helioscopia could be used to control diseases caused by these microbes.

Natural Product Communications published new progress about Alkenes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 41114-00-5 belongs to class esters-buliding-blocks, name is Ethyl pentadecanoate, and the molecular formula is C17H34O2, Safety of Ethyl pentadecanoate.

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

Voutyritsa, Errika published the artcilePhotocatalytic atom transfer radical addition to olefins utilizing novel photocatalysts, Computed Properties of 583-04-0, the main research area is ruthenium photocatalyst atom transfer radical addition; ATRA reactions; olefins; photocatalysis; ruthenium-based complexes; sustainable catalysis.

Photocatalysis is a rapidly evolving area of research in modern organic synthesis. Among the traditional photocatalysts, metal-complexes based on ruthenium or iridium are the most common. Herein, we present the synthesis of two photoactive, ruthenium-based complexes bearing pyridine-quinoline or terpyridine ligands with extended aromatic conjugation. Our complexes were utilized in the atom transfer radical addition (ATRA) of haloalkanes to olefins, using bromoacetonitrile or bromotrichloromethane as the source of the alkyl group. The tailor-made ruthenium-based catalyst bearing the pyridine-quinoline bidentate ligand proved to be the best-performing photocatalyst, among a range of metal complexes and organocatalysts, efficiently catalyzing both reactions. These photocatalytic atom transfer protocols can be expanded into a broad scope of olefins. In both protocols, the photocatalytic reactions led to products in good to excellent isolated yields.

Molecules published new progress about Alkenes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 583-04-0 belongs to class esters-buliding-blocks, name is Allyl benzoate, and the molecular formula is C10H10O2, Computed Properties of 583-04-0.

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

Celik, Z. D. published the artcileImpact of malolactic fermentation on the volatile composition of Turkish Kalecik karasi red wines, COA of Formula: C10H20O2, the main research area is red wine volatile compound Oenococcus oeni.

The effects of spontaneous malolactic fermentation (MLF) and a malolactic starter culture (Oenococcus oeni) on the volatile compounds of Kalecik karasi red wines were investigated. The volatile compounds were extracted using liquid-liquid extraction and quantified by GC-MS-flame ionization detection. Starter cultures of O. oeni had a pos. effect in shortening MLF and producing lower volatile acidity. After MLF, the total volatile compounds increased in both the inoculated wines and the spontaneously fermented wine. Et lactate, di-Et succinate and γ-butyrolactone increased upon inoculation with cultures of O. oeni strains PN4 and VP41. MLF increased the diacetyl concentration in all Kalecik karasi wines. Strain dependent differences were found in the level of diacetyl, with O. oeni PN4 producing more diacetyl than O. oeni VP41. After MLF, the concentrations of acetoin, 4-ethylguaicol and 4-ethylphenol increased in spontaneously fermented wine compared with wines inoculated with O. oeni. Accordingly, the use O. oeni PN4 is recommended for a controlled MLF to produce better quality Kalecik karasi wines.

Journal of the Institute of Brewing published new progress about Lactones Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, COA of Formula: C10H20O2.

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

Liu, Zhibin published the artcileThe dynamics of volatile compounds and their correlation with the microbial succession during the traditional solid-state fermentation of Gutian Hong Qu glutinous rice wine, Category: esters-buliding-blocks, the main research area is rice wine volatile compoundmicrobial succession solid state fermentation; Bacterial community; Fungal community; Gutian Hong Qu glutinous rice wine; High throughput sequencing; Traditional solid-state fermentation; Volatile components.

Gutian Hong Qu glutinous rice wine (GHQW) is a representative alc. beverage in China. During its traditional brewing process, multiple strains are involved. However, the roles of these microorganisms, particularly their contributions to aroma formation, are poorly understood. Therefore, in this study, the dynamics of volatile components and microbial succession during the traditional fermentation process of GHQW were monitored, by using HS-SPME-GC/MS and high throughput 16 S rRNA and ITS sequencing techniques. Following a 32-day semi-open solid-state fermentation, massive changes in volatile profile and microbial communities were observed Based on these, the potential correlations between volatile components and microorganisms during the fermentation were explored by using Pearson correlation anal. It was revealed that 3 bacterial taxa, including Lactococcus lactis, Burkholderia gladioli and Cronobacter helveticus, and 5 fungal taxa, including Wickerhamomyces anomalus, Saccharomyces cerevisiae, Aspergillus vitricola, Aspergillus penicillioides and Monascus purpureus, showed strong connections with various volatile components. Thus these bacteria and fungi might play crucial roles in volatile components biosynthesis, and thus were preliminary considered as core functional microorganisms for GHQW brewing. The detailed information on the dynamic changes of volatile components and microbial communities throughout GHQW brewing can further expand our understanding of the formation mechanisms of GHQW aroma.

Food Microbiology published new progress about 16S rRNA Role: FFD (Food or Feed Use), BIOL (Biological Study), USES (Uses). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Category: esters-buliding-blocks.

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