Category: esters-buliding-blocks

Huang, Xiuqiong published the artcileEffect of Natural Antioxidants from Marigolds (Tagetes erecta L.) on the Oxidative Stability of Soybean Oil, Name: Methyl docosanoate, the main research area is Tagetes soybean oil natural antioxidant oxidative stability; DPPH-HPLC-Q-TOF/MS; HS-SPME-GC-MS; Tagetes erecta L.; oxidative stability; quercetagetin.

In recent years, synthetic antioxidants that are widely used in foods have been shown to cause detrimental health effects, and there has been growing interest in antioxidants realized from natural plant extracts In this study, we investigate the potential effects of natural antioxidant components extracted from the forage plant marigold on the oxidative stability of soybean oil. First, HPLC-Q-TOF-MS/MS was used with 1,1-diphenyl-2-picrylhydrazyl (DPPH) to screen and identify potential antioxidant components in marigold. Four main antioxidant components were identified, including quercetagetin-7-O-glucoside (1), quercetagetin (2), quercetin (3) and patuletin (4). Among them, quercetagetin (QG) exhibited the highest content and the strongest DPPH radical scavenging activity and effectively inhibited the production of oxidation products in soybean oil during accelerated oxidation, as indicated by reductions in the peroxide value (PV) and acid value (AV). Then, the fatty acids and volatile compounds of soybean oil were determined with gas chromatog.-mass spectrometry (GC-MS) and headspace solid-phase microextraction-gas chromatog.-mass spectrometry (HS-SPME-GC-MS). A total of 108 volatile components, including 16 alcs., 23 aldehydes, 25 ketones, 4 acids, 15 esters, 18 hydrocarbons, and 7 other compounds, were identified. QG significantly reduced the content and number of aldehydes and ketones, whereas the formation of acids and hydrocarbons was completely prevented. In addition, the fatty acid anal. demonstrated that QG significantly inhibited oxidation of unsaturated fatty acids. Consequently, QG was identified as a potential, new natural antioxidant that is believed to be safe, effective and economical, and it may have potential for use in plant extracts feed additives.

Molecules published new progress about Fatty acids 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, Name: Methyl docosanoate.

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

Ali, Fatma published the artcileOil/fat blending strategy for improving milk fat globule membrane stability and its effect on fatty acid composition, Safety of Methyl docosanoate, the main research area is milk oil fatty acid fat globule membrane stability.

This study examined the effect of blending with cumin essential oil (CEO) on the stabilization of milk fat globule membrane (MFGM) emulsions, as well as the particle migration rate, fatty acid composition and phospholipid content after pasteurisation. Blending the MFGM with 20% CEO at pH 6.6 (CM4) led to a decrease in the creaming rate. With increasing CEO ratio, the creaming measurements increased to a 30 mm height with 20% CEO at pH 5.5 (CM3) from 25 mm with 10% CEO at pH 5.5 (CM2). The CM4 migration rate was 0.55 mm/h, and this sample showed no significant forward movement during implementation. The droplet size increased with increasing CEO ratio from 1.69 to 2.07μm. A total of 20% CEO at pH 6.6 (CM4) was the best blending condition for MFGM stabilization. This study showed enhanced creaming rate and droplet size, indicating greater destabilization of the MFGM emulsion, when the CEO ratio was increased.

International Journal of Dairy Technology published new progress about Fatty acids 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

Poornachandra Rao, K. published the artcileAntiaflatoxigenic Potential of Cell-Free Supernatant from Lactobacillus plantarum MYS44 Against Aspergillus parasiticus, Recommanded Product: Methyl docosanoate, the main research area is aflatoxin Lactobacillus plantarum Aspergillus parasiticus feed peanut; Aflatoxin B1; Antifungal metabolites; Biopreservation; CFS of LpMYS44; Poultry feeds.

The study aims to evaluate the cell-free supernatant (CFS) from Lactobacillus plantarum strain MYS44 against the growth and aflatoxin production by Aspergillus parasiticus MTCC 411. Standard in vitro techniques revealed the potential antifungal activity of CFS of LpMYS44. In poison food technique, it was observed that 6% CFS of LpMYS44 retarded maximum growth. The inhibition of A. parasiticus on peanuts confirmed the ability of CFS of LpMYS44 for biopreservation. Further, CFS of LpMYS44 was purified by chromatog. and analyzed by GC-MS. The major antifungal compounds were oleic acid, octanoic acid, butanamide, and decanoic acid derivatives Twofold concentrated 80 μL of CFS was found to be min. inhibitory concentration (MIC) of CFS of LpMYS44. CFS of LpMYS44 suppressed the germination and growth of the spores of A. parasiticus. Microscopic observation showed that CFS of LpMYS44 severely affected the hyphal wall of A. parasiticus by the leakage of cytoplasmic content leading to complete destruction. Acidic condition is favorable for CFS of LpMYS44 activity. In poultry feed sample, CFS of LpMYS44 reduced the aflatoxin B1 content by 34.2%, reflecting its potentiality to use as detoxification agent. The multiple antifungal components in CFS of LpMYS44 exhibited antifungal properties against aflatoxigenic A. parasiticus resulted in causing overall morphol. changes. Furthermore, we also observed the biopreservative ability of CFS of LpMYS44 against A. parasiticus and AFB1 reduction in for poultry feed. This study makes a contribution to using CFS of LpMYS44 and their applications in food and feed as pretreatment against aflatoxigenic A. parasiticus to reduce or eliminate AFB1 and maybe other aflatoxins, produced by other Aspergillus spp.

Probiotics and Antimicrobial Proteins published new progress about Aflatoxins 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, Recommanded Product: Methyl docosanoate.

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

Ghazipour, H. published the artcileInsights on biodiesel blends with alkanol solvents, Related Products of esters-buliding-blocks, the main research area is biodiesel blend alkanol solvent radial distribution.

Thermophys. properties of mixtures of fatty acid esters with alkanols were measured in the whole composition range as a function of temperature for understanding features of biodiesel blends. Excess and mixing properties calculated from exptl. measurements allowed to quantify and analyze the intermol. forces in the considered systems. Likewise, mol. modeling studies using quantum chem. and classical mol. dynamics simulations led to a detailed characterization of these systems at the nanoscopic level. The nature of hydrogen bonding in these liquid mixtures was particularly analyzed from macroscopic properties and theor. modeling results. The reported exptl. and computational study allowed to infer the relationships between the intermol. forces and addnl. microscopic features and the mixtures macroscopic properties, which are relevant for the development and characterization of biodiesels. The non-ideality behavior of the studied systems shows relevant changes in hydrogen bonding structuring upon mixing, with the fatty acid esters largely disrupting the alcs. self-association, although ester – alc. hydrogen bonding is developed, this type of interactions is remarkably weaker than those for alcs. Therefore, the studied biodiesel blends macroscopic properties may be tuned and controlled through the amount of alcs. in the mixtures and rooted on its effect on hydrogen bonding.

Journal of Molecular Liquids published new progress about Alcohols Role: PEP (Physical, Engineering or Chemical Process), PROC (Process). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Related Products of esters-buliding-blocks.

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

Tang, Bo published the artcileChiral amorphous metal-organic polyhedra used as the stationary phase for high-resolution gas chromatography separations, Related Products of esters-buliding-blocks, the main research area is methyl caproate enanthate high resolution gas chromatog separation; amorphous metal-organic polyhedra; chiral recognition; chiral stationary phases; gas chromatography.

Herein, we describe a new chiral amorphous metal-organic polyhedra used as the stationary phase for high-resolution gas chromatog. (GC). The chiral stationary phase was coated onto a capillary column via a dynamic coating process and investigated for a variety of compounds The exptl. results showed that the chiral stationary phase exhibits good selectivity for linear alkanes, linear alcs., polycyclic aromatic hydrocarbons, isomers, and chiral compounds In addition, the column has the advantages of high column efficiency and short anal. time. The present work indicated that amorphous metal-organic polyhedra have great potential for application as a new type of stationary phase for GC.

Chirality published new progress about Alcohols Role: PEP (Physical, Engineering or Chemical Process), PROC (Process). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Related Products of esters-buliding-blocks.

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

Tang, Bo published the artcileChiral amorphous metal-organic polyhedra used as the stationary phase for high-resolution gas chromatography separations, Category: esters-buliding-blocks, the main research area is methyl caproate enanthate high resolution gas chromatog separation; amorphous metal-organic polyhedra; chiral recognition; chiral stationary phases; gas chromatography.

Herein, we describe a new chiral amorphous metal-organic polyhedra used as the stationary phase for high-resolution gas chromatog. (GC). The chiral stationary phase was coated onto a capillary column via a dynamic coating process and investigated for a variety of compounds The exptl. results showed that the chiral stationary phase exhibits good selectivity for linear alkanes, linear alcs., polycyclic aromatic hydrocarbons, isomers, and chiral compounds In addition, the column has the advantages of high column efficiency and short anal. time. The present work indicated that amorphous metal-organic polyhedra have great potential for application as a new type of stationary phase for GC.

Chirality published new progress about Alcohols Role: PEP (Physical, Engineering or Chemical Process), PROC (Process). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Category: esters-buliding-blocks.

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

He, Zeyu published the artcileCooperation between an alcoholic proton and boryl species in the catalytic gem-hydrodiborylation of carboxylic esters to access 1,1-diborylalkanes, Synthetic Route of 111-11-5, the main research area is alc boryl reactivity hydrodiborylation carboxylic ester; diboryl alkane boronic ester preparation chemoselective.

Cooperation between an alc. proton and boryl species in the selective gem-hydrodiborylation of carboxylic esters is described. The simple iron salt FeBr2 was used as an effective catalyst. Exptl. evidence suggests that the ester is initially hydrogenated with the alc. proton as the hydride source to provide an intermediate aldehyde, followed by a gem-diborylation with B2pin2 (bis(pinacolato)diboron) to selectively achieve gem-hydrodiborylation. The structure of the alkoxide used is important for chemoselective transformation of the ester functional group. When tert-butoxide is used, protonation of the iron boryl species to form an iron hydride species is rate-limiting, making hydrodiborylation of the ester selectively occur. When ethoxide or methoxide is used, the protonation of the iron boryl species to form an iron hydride species is relatively facile, making hydrogenation of the ester to an alc. selectively occur with the alc. proton acting as the hydride source. With NaOtBu as the base and EtOH as the proton source, various aliphatic esters like Et acetate were selectively converted to 1,1-diborylalkanes in the presence of B2pin2. Diverse transformations of the obtained 1,1-diborylalkanes exhibit the advantages of this methodol. for hetero multi-functionalization of ester functional groups for the synthesis of various value-added mols.

Organic Chemistry Frontiers published new progress about Alkanes Role: SPN (Synthetic Preparation), PREP (Preparation) (diborylalkanes). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Synthetic Route of 111-11-5.

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

Sun, Qingyang published the artcileRain-shelter cultivation affects the accumulation of volatiles in ‘shuijing’ grape berries during development, Recommanded Product: Ethyl 3-hydroxybutanoate, the main research area is volatile grape berry development rain shelter cultivation.

Rain-shelter cultivation could protect grape berries from many diseases and affect grape berry quality. However, there have been few studies of the effects of rain-shelter cultivation on the accumulation of volatiles in Shuijing grapes grown in Yunnan Province. Therefore, the goal of this research was to explore the effects of rain-shelter cultivation on the accumulation of volatiles in Shuijing grape berries during development. The Shuijing grapes used during this study were grown in the Yunnan Province of southwest China in two consecutive vintages (2018 and 2019). The results showed that rain-shelter cultivation promoted grape ripening and inhibited volatiles synthesis in Shuijing grape berries. However, the application of rain shelters did not affect the accumulation patterns of volatiles; instead, it affected the concentrations of volatiles in Shuijing grape berries, especially during the maturation phase [12-15 wk after flowering (WAF)]. The concentrations of isoprenoid-derived volatiles (2019), fatty acid-derived volatiles, and amino acid-derived benzenoids in Shuijing grape berries were decreased by rain-shelter cultivation during the maturation phase. The concentration of 2,5-dimethyl-4-methoxy-3(2H)-furanone (mesifurane) was also decreased by rain-shelter cultivation during the late maturation phase (14 and 15 WAF). A principal component anal. (PCA) indicated that the vintage had a much greater influence on the physicochem. parameters and volatiles of the Shuijing grape berries than the cultivation method. This work reveals the formation and accumulation patterns of volatiles of Shuijing grape berries under rain-shelter cultivation during development and has significance for exploring the potential of rain-shelter cultivation in grape-producing regions with excessive rainfall.

HortScience published new progress about Amino acids Role: FFD (Food or Feed Use), BIOL (Biological Study), USES (Uses). 5405-41-4 belongs to class esters-buliding-blocks, name is Ethyl 3-hydroxybutanoate, and the molecular formula is C6H12O3, Recommanded Product: Ethyl 3-hydroxybutanoate.

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

Domingos, Ligia Dozena published the artcileFat reduction and whey protein concentrate addition alter the concentration of volatile compounds during Prato cheese ripening, Safety of Ethyl 3-hydroxybutanoate, the main research area is fat reduction whey protein volatile compound cheese ripening; Diacetyl; Mass spectrometry; Solid phase microextraction; Volatile compounds; Washed curd cheese.

The impact of fat reduction and the addition of whey protein concentrate (WPC) on the volatile compounds profile of Prato cheese was evaluated for 210 days of storage at 12 °C. Full fatPrato cheese, Prato cheese with fat reduction and reduced fatPrato cheese with 0.5% (w/v) WPC were made, and replicated on a different day. Cheese volatile compounds were extracted by solid phase microextraction (SPME) and separated, identified and quantified by gas chromatog. coupled to a mass spectrometry detector (GC-MS). Fat reduction and the WPC addition resulted in lower concentrations of compounds derived from lipolysis and free fatty acid catabolism. Fat reduction generated higher levels of diacetyl and acetoin, both from the citrate metabolism, at days 5 and 30. A similar pattern was observed for sulfur compounds derived from the catabolism of free amino acids, at day 120. Higher levels of diacetyl (day15), di-Me disulfide (days 150-180) and di-Me trisulfide (days 150-210) were found for cheese with WPC. These differences might have occurred due to alterations in the structure and polarity of the protein matrix caused by fat reduction and the WPC addition

Food Research International published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 5405-41-4 belongs to class esters-buliding-blocks, name is Ethyl 3-hydroxybutanoate, and the molecular formula is C6H12O3, Safety of Ethyl 3-hydroxybutanoate.

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

Cheng, Jin-tao published the artcileTranscriptome analysis of the influence of CPPU application for fruit setting on melon volatile content, Formula: C9H10O2, the main research area is Cucumis fruit benzyl phenethyl acetate phenylalanine metabolism CPPU transcriptomics.

In fruit production, the application of the plant growth regulator 1-(2-chloro-4-pyridyl)-3-phenylurea (CPPU) dulls the fruit aroma. Gas chromatog.-mass spectrometry and transcriptome analyses were performed on CPPU-treated and pollinated fruits to determine how CPPU affects the production of aroma in melon fruit. The results showed that the contents of two important esters (benzyl acetate and phenethyl acetate) in the CPPU-treated fruits were significantly lower than those in the pollinated fruits. Transcriptome sequencing data revealed that most differentially expressed genes were involved in “”phenylalanine metabolism”” pathway, and their expression was significantly decreased in the CPPU-treated fruits. Further anal. showed that the phenylalanine content in the CPPU-treated fruits was significantly higher than that in the pollinated fruits. In summary, CPPU application interferes with phenylalanine metabolism in melon fruits and affects the production of aromatic esters.

Journal of Integrative Agriculture published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Formula: C9H10O2.

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