Esters-buliding-blocks

Liu, Ping published the artcileConsumer preference of Chinese traditional fermented fava pastes, HPLC of Formula: 110-34-9, the publication is International Journal of Food Properties (2018), 21(1), 2469-2490, database is CAplus.

The present study was designed to investigate the consumer preference and the quality attributes of five brands of Chinese traditional first-grade fava pastes, following which their quality differences were evaluated in order to identify the key drivers or factors, which can be applied to explain the behavior of consumer preferences. Consumers ranked these samples based on the 9-point method. An obvious preference for sample P1 was observed with 35% of participants settling on extremely liked option, giving the said sample the highest overall preference score of 7.8 ± 0.2. Further sensory and physicochem. properties, and volatiles were conducted to identify the major drivers of the consumer behavior. Sensory evaluation showed that sample P1 also produced the highest overall sensory score (85 ± 3). Though all the samples exhibited similar physicochem. attributes, significant differences were observed in the species and the concentration of volatile compounds Accordingly, the content of free amino acids (FAAs) and low-mol.-weight (MW) fraction (≤5 kDa) represented the trend that fell in line with sensory score. PLS2 correlation anal. indicated that physicochem. indexes and volatiles could be used to explain the consumer preference, which was likely to be synergistically affected by FAAs, protein, amino nitrogen, dietary fiber, Ca, P, Fe, δ-Ε, and some volatiles, especially the pos. drivers of FAAs and low MW proportion to sample P1. The work would not only provide valuable information for grading of fava pastes in the industry but also guide actual producing toward the expectation of consumers, especially increasing those pos. drivers.

International Journal of Food Properties published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, HPLC of Formula: 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Zhou, Hui published the artcileThe nucleation mechanism of 1-N’,3-N’-dibenzoylbenzene-1,4-dicarbohydrazide as a nucleating agent for isotactic polypropylene, Category: esters-buliding-blocks, the publication is Journal of Polymer Research (2022), 29(7), 283, database is CAplus.

A novel nucleating agent (NA) 1-N’,3-N’-dibenzoylbenzene-1,4-dicarbohydrazide (PTADH-Ph-3) for isotactic polypropylene (iPP) was synthesized and the structure of the synthesized product was characterized by Fourier transform IR spectroscopy (FT-IR), proton NMR spectroscopy (1H-NMR) and high resolution mass spectrometry (HRMS). The results showed that the target compound was successfully synthesized. Differential scanning calorimeter (DSC) was used to study the influence of the addition concentration of PTADH-Ph-3 and the final heating temperature (T_f) on the crystallization behavior of iPP. The results showed that the crystallization behavior of nucleated iPP had no relationship with T_f no matter how much PTADH-Ph-3 was added. This shows that PTADH-Ph-3 is not a solution-type NA, so its nucleation mechanism belongs to the traditional heterogeneous crystallization The nucleation mechanism of PTADH-Ph-3 in iPP was explored through Materials Studio (MS) simulation. Firstly, the mol. dynamics (MD) of PTADH-Ph-3 and iPP were calculated mainly by MS. The calculation results showed that the interaction force between PTADH-Ph-3 and iPP mols. was 14.447 kcal mol^-1, indicating that PTADH-Ph-3 has a better adsorption effect on the iPP surface, which can promote the epitaxial crystallization of iPP. The calculated results show that the lattice mismatch between PTADH-Ph-3 and iPP is only 0.03% and 2.28%, which is far lower than the strict upper limit of 10-15% geometric mismatch in the crystal lattice matching theory.

Journal of Polymer Research published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C8H8O3, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Ding, Bao-jian published the artcileBiosynthesis of the Sex Pheromone Component (E,Z)-7,9-Dodecadienyl Acetate in the European Grapevine Moth, Lobesia botrana, Involving Δ11 Desaturation and an Elusive Δ7 Desaturase, Computed Properties of 16974-11-1, the publication is Journal of Chemical Ecology (2021), 47(3), 248-264, database is CAplus and MEDLINE.

The European grapevine moth, Lobesia botrana, uses (E,Z)-7,9-dodecadienyl acetate as its major sex pheromone component. Through in vivo labeling experiments we demonstrated that the doubly unsaturated pheromone component is produced by Δ11 desaturation of tetradecanoic acid, followed by chain shortening of (Z)-11-tetradecenoic acid to (Z)-9-dodecenoic acid, and subsequently introduction of the second double bond by an unknown Δ7 desaturase, before final reduction and acetylation. By sequencing and analyzing the transcriptome of female pheromone glands of L. botrana, we obtained 41 candidate genes that may be involved in sex pheromone production, including the genes encoding 17 fatty acyl desaturases, 13 fatty acyl reductases, 1 fatty acid synthase, 3 acyl-CoA oxidases, 1 acetyl-CoA carboxylase, 4 fatty acid transport proteins and 2 acyl-CoA binding proteins. A functional assay of desaturase and acyl-CoA oxidase gene candidates in yeast and insect cell (Sf9) heterologous expression systems revealed that Lbo_PPTQ encodes a Δ11 desaturase producing (Z)-11-tetradecenoic acid from tetradecanoic acid. Further, Lbo_31670 and Lbo_49602 encode two acyl-CoA oxidases that may produce (Z)-9-dodecenoic acid by chain shortening (Z)-11-tetradecenoic acid. The gene encoding the enzyme introducing the E7 double bond into (Z)-9-dodecenoic acid remains elusive even though we assayed 17 candidate desaturases in the two heterologous systems.

Journal of Chemical Ecology published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Computed Properties of 16974-11-1.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Li, Xiaonan published the artcileCloning and expression of Lactobacillus brevis β-glucosidase and its effect on the aroma of strawberry wine, Computed Properties of 103-26-4, the publication is Journal of Food Processing and Preservation (2022), 46(3), e16368, database is CAplus.

The aim of this study was to evaluate the effect of β-glucosidase (Lb0241) derived from Lactobacillus brevis on the aroma of strawberry wine. The recombinant Lb0241 was cloned and expressed in Escherichia coli BL21 (DE3). The effect of temperature, pH, and additives on the activity of Lb0241 and its substrate specificity and kinetic parameters were analyzed. Furthermore, the effects of Lb0241 on the aroma properties of strawberry wine were evaluated by SPME-GC-MS and sensory evaluation. Lb0241 showed remarkable specificity for β-glucoside and displayed the highest activity at pH 5.0 and 30°C, with a relative activity of 55% in 12% ethanol. Ni2+ and K+ could increase the activity of Lb0241, but Fe2+, urea, 2-hydroxy-1-ethanethiol, and sodium dodecyl sulfate showed the opposite effect. Lb0241 could increase the aroma-active volatiles of esters, terpenoids, and phenols, and decrease alcs. and volatile acids. Overall, Lb0241 showed promising prospects in terms of aroma release in strawberry wine. Practical applications : A notable part of non-volatile glycosidic precursors present in fruit wine constitutes a reserve of potential aroma-active mols. Thus, the hydrolysis of aromatic precursors could significantly enhance the aroma of fruit wine. Our results showed that the new β-glucosidase Lb0241, which was derived from Lactobacillus brevis T61, exhibited strong acid and ethanol resistance. Moreover, Lb0241 could effectively hydrolyze aromatic precursors and enhance the level of aroma compounds in strawberry wine. Therefore, Lb0241 has potential application prospects and economic value to improve the flavor of fruit wine.

Journal of Food Processing and Preservation published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C10H10O2, Computed Properties of 103-26-4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kong, Jiahui published the artcilePreparation of the key dolutegravir intermediate via MgBr2-promoted cyclization, Related Products of esters-buliding-blocks, the publication is Molecules (2021), 26(10), 2850, database is CAplus and MEDLINE.

A novel approach for synthesizing the key dolutegravir intermediate is described via MgBr₂-promoted intramol. cyclization. Condensation of com. available Me oxalyl chloride and Et 3-(N,N-dimethylamino)acrylate afforded the vinylogous amide in an excellent yield. Subsequent substitution by aminoacetaldehyde di-Me acetal and Me bromoacetate gave rise to the expected precursor for cyclization, which was promoted by MgBr₂ to highly selectively convert into pyridinone diester. The key dolutegravir intermediate was finally prepared by the selective hydrolysis of the corresponding diester via LiOH.

Molecules published new progress about 924-99-2. 924-99-2 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Amine,Aliphatic hydrocarbon chain,Ester, name is Ethyl 3-(dimethylamino)acrylate, and the molecular formula is C7H13NO2, Related Products of esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Liu, Junzhi published the artcileInfrared and Raman spectra of long-chain mono-unsaturated alcohol esters, COA of Formula: C14H26O2, the publication is Canadian Journal of Spectroscopy (1990), 35(1), 5-10, database is CAplus.

The IR and Raman spectra of eleven long-chain mono-unsaturated alc. esters have been investigated both at room temperature and below the f.p. temperature (solid state). The differences between the observed spectra are discussed in terms of the structural differences in these mols.

Canadian Journal of Spectroscopy published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, COA of Formula: C14H26O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Langer, Peter published the artcileNew and efficient synthesis of pyrrolo[3,2-b]pyrrole-2,5-diones by double-anion-capture reactions of ester carbanions with bis(imidoyl)chlorides of oxalic acid, Application of Ethyltert-butylacetate, the publication is Journal of Organic Chemistry (2000), 65(3), 729-734, database is CAplus.

A variety of pyrrolo[3,2-b]pyrrole-2,5-diones were efficiently prepared by a new domino-reaction of ester carbanions with oxalic acid bis(imidoyl)chlorides. This reaction proceeded by condensation of 2 equiv of the ester with the bis(imidoyl)chloride and subsequent intramol. attack of the nitrogen atoms of the bis-enamine intermediate onto the ester groups. The products, which can be regarded as dilactams of pentalene, represent useful synthetic pigments due to their optical features, their stability, and low solubility The UV-visible properties of the pyrrolo[3,2-b]pyrrole-2,5-diones could be efficiently controlled by the substituents attached to the heterocyclic core. The scope and the limitations of the new cyclization reaction were investigated.

Journal of Organic Chemistry published new progress about 5340-78-3. 5340-78-3 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is Ethyltert-butylacetate, and the molecular formula is C8H16O2, Application of Ethyltert-butylacetate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Liu, Junzhao published the artcileROS-responsive liposomes as an inhaled drug delivery nanoplatform for idiopathic pulmonary fibrosis treatment via Nrf2 signaling, Formula: C6H8O4, the publication is Journal of Nanobiotechnology (2022), 20(1), 213, database is CAplus and MEDLINE.

Idiopathic pulmonary fibrosis (IPF) is a progressive fibrotic disease with pathophysiol. characteristics of transforming growth factor-β (TGF-β), and reactive oxygen species (ROS)-induced excessive fibroblast-to-myofibroblast transition and extracellular matrix deposition. Macrophages are closely involved in the development of fibrosis. Nuclear factor erythroid 2 related factor 2 (Nrf2) is a key mol. regulating ROS and TGF-β expression. Therefore, Nrf2 signaling modulation might be a promising therapy for fibrosis. The inhalation-based drug delivery can reduce systemic side effects and improve therapeutic effects, and is currently receiving increasing attention, but direct inhaled drugs are easily cleared and difficult to exert their efficacy. Therefore, we aimed to design a ROS-responsive liposome for the Nrf2 agonist di-Me fumarate (DMF) delivery in the fibrotic lung. Moreover, we explored its therapeutic effect on pulmonary fibrosis and macrophage activation. We synthesized DMF-loaded ROS-responsive DSPE-TK-PEG@DMF liposomes (DTP@DMF NPs). DTP@DMF NPs had suitable size and neg. zeta potential and excellent capability to rapidly release DMF in a high-ROS environment. We found that macrophage accumulation and polarization were closely related to fibrosis development, while DTP@DMF NPs could attenuate macrophage activity and fibrosis in mice. RAW264.7 and NIH-3T3 cells coculture revealed that DTP@DMF NPs could promote Nrf2 and downstream heme oxygenase-1 (HO-1) expression and suppress TGF-β and ROS production in macrophages, thereby reducing fibroblast-to-myofibroblast transition and collagen production by NIH-3T3 cells. In vivo experiments confirmed the above findings. Compared with direct DMF instillation, DTP@DMF NPs treatment presented enhanced antifibrotic effect. DTP@DMF NPs also had a prolonged residence time in the lung as well as excellent biocompatibility. DTP@DMF NPs can reduce macrophage-mediated fibroblast-to-myofibroblast transition and extracellular matrix deposition to attenuate lung fibrosis by upregulating Nrf2 signaling. This ROS-responsive liposome is clin. promising as an ideal delivery system for inhaled drug delivery.

Journal of Nanobiotechnology published new progress about 624-49-7. 624-49-7 belongs to esters-buliding-blocks, auxiliary class Inhibitor,Natural product, name is Dimethyl fumarate, and the molecular formula is C6H8O4, Formula: C6H8O4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Zou, Shuping published the artcileProduction and characterization of bio-oil from hydrothermal liquefaction of microalgae Dunaliella tertiolecta cake, Recommanded Product: Isobutyl palmitate, the publication is Energy (Oxford, United Kingdom) (2010), 35(12), 5406-5411, database is CAplus.

Renewable fuels are major alternatives to conventional fossil fuels. Biomass in the form of agricultural and industrial residues is fast becoming popular among new renewable energy sources. Hydrothermal liquefaction can thermochem. convert biomass residues into bio-oil. This work investigates the hydrothermal liquefaction of microalgae Dunaliella tertiolecta cake under various liquefaction temperatures, holding times, and catalyst dosages. A maximum bio-oil yield of 25.8% is obtained at a reaction temperature of 360 °C and a holding time of 50 min using 5% Na₂CO₃ as a catalyst. The various phys. and chem. characteristics of bio-oil obtained under the most suitable conditions are determined, and a detailed chem. compositional anal. of bio-oil is performed using an elemental analyzer, Fourier transform-IR spectroscopic anal. (FT-IR), and gas chromatog.-mass spectrometry (GC-MS). The bio-oil is composed of fatty acids, fatty acid Me esters, ketones, and aldehydes. Its empirical formula is CH_1.44O_0.29N_0.05, and its heating value is 30.74 MJ/kg. The bio-oil product is a possible eco-friendly green biofuel and chem.

Energy (Oxford, United Kingdom) published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C15H20BNO3, Recommanded Product: Isobutyl palmitate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Guo, Guangzhong published the artcileDetermination of the position of double bonds by micro ozone oxidation reaction, Application In Synthesis of 16974-11-1, the publication is Youji Huaxue (1982), 465-6, database is CAplus.

The positions of double bonds in some long-chain alkenol acetates, e.g., insect pheromones, were determined by micro O₃ oxidation O₃, generated from an O-N gas mixture by elec. discharge, was passed through the alkenol acetate sample solutions, and the resulting ketones or aldehydes were analyzed by gas chromatog. and mass spectrometry. The alkenol acetates identified were (Z)-8- and (Z)-9-dodecen-1-ol acetates and (E)-10-,(E)-12-tetradecen-1-ol acetates.

Youji Huaxue published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Application In Synthesis of 16974-11-1.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics