Esters-buliding-blocks

Veselkova, I. published the artcileGel electrolytes based on copolymers, COA of Formula: C16H30O2, the main research area is gel electrolytes copolymer mech property.

This paper deals with preparation of gel electrolytes based on copolymers. Copolymer is a new material, which consists of two different monomers. The main goal of this work was to find a new gel electrolyte with conductivity more than 5 mS/cm with a good elec. stability and good mech. properties. Impedance spectroscopy and linear voltammetry were used for measurement elec. conductivity and potential window.

ECS Transactions published new progress about Electric conductivity. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, COA of Formula: C16H30O2.

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

Zhang, Zhi published the artcileAn alumina-coated UiO-66 nanocrystalline solid superacid with high acid density as a catalyst for ethyl levulinate synthesis, Formula: C7H12O3, the main research area is sulfate impregnated zirconia alumina catalyst preparation property; glucose dehydration ethyl levulinate.

The zirconium-containing metal-organic framework (MOF) UiO-66 was used as a cell to synthesize SO42-/ZrO2@Al2O3, a high-d. superacid with relatively strong Bronsted acidity. The UiO-66 MOF was first coated with alumina to form ZrO2@Al2O3. Impregnation with ammonium sulfate and calcination at 500°C afforded the bimetallic composite solid superacid SO42-/ZrO2@Al2O3. RESULTS : Scanning and transmission electron microscopy images confirmed that UiO-66 was successfully coated with aluminum oxide, and its octahedral structure and uniform size (400-600 nm) were retained. SO42-/ZrO2@Al2O3 had a Brunauer-Emmett-Teller sp. surface area of 301-330 m2 g-1 and average pore diameter of 9.6-10.7 nm. XPS and Fourier transform IR anal. showed that SO42-/ZrO2@Al2O3 contained S6+ and Al3+. Temperature-programmed ammonia desorption anal. showed that SO42-/ZrO2@Al2O3 contained super-strong acid sites. The total volume of desorbed ammonia reached 90-109 cm3 g-1. IR spectra of adsorbed pyridine indicated that SO42-/ZrO2@Al2O3 contained mainly Lewis acid sites and was relatively rich in Bronsted acid sites. Thermogravimetric anal. showed that the thermal stability of SO42-/ZrO2@Al2O3 was high. SO42-/ZrO2@Al2O3-3M (the impregnation concentration of ammonium sulfate was 3 mol L-1) and glucose were used to synthesize Et levulinate (EL) in ethanol. The highest EL yield of 37.5 mol% was obtained after reacting the mixture at 200°C for 5 h. An EL yield of 28.8 mol% was obtained after four consecutive reuses of the SO42-/ZrO2@Al2O3-3M catalyst.

Journal of Chemical Technology and Biotechnology published new progress about Dehydration catalysts. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Formula: C7H12O3.

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

Zhang, Jiang published the artcileCharacterization of key aroma compounds in melon spirits using the sensomics concept, Safety of Ethyl nonanoate, the main research area is aroma melon spirit sensomics.

Processing melon into spirits has important environmental and economic value. However, the flavor of melon spirits is undesirable and has yet to be studied. In this study, a combination of odor activity value, gas chromatog.-olfactometry detection frequency anal., aroma reconstitution, and omission tests showed that key aroma compounds (Group 1), including 3,6-nonadien-1-ol and 3-nonen-1-ol, were responsible for the undesirable green and fatty aromas of melon spirits. Meanwhile, the desirable fruity and floral aromas were provided by Group 2 compounds, which included isoamyl acetate and (E)-damascenone. Omission tests of Group 1 and Group 2 compounds showed that, similar to the fruit and floral aromas, the green and fatty aromas were important components of melon spirit flavor. Furthermore, adding Group 2 compounds to the spirits inhibited green and fatty flavours, improved the fruit and floral aromas, and enhanced the sensory evaluation of melon spirits. This study provides a basis for improving the production process and aroma of melon spirits.

LWT–Food Science and Technology published new progress about Cucumis melo (spirit). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Safety of Ethyl nonanoate.

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

Osorio, Pedro R. A. published the artcileEssential oil of Noni, Morinda citrifolia L., fruits controls the rice stem-rot disease without detrimentally affect beneficial fungi and ladybeetles, Formula: C9H18O2, the main research area is Morinda fruit essential oil.

The use of botanical fungicides has been presented as a promising tool to replace the use of synthetic compounds, as the former seems to offer reduced risks to the environment and human health. Here, we characterized the major constituents and evaluated the potential of essential oils of Noni, Morinda citrifolia L. plants for controlling stem-rot disease caused by the fungus Sclerotium rolfsii Catt in Neotropical rice, Oryza sativa L., fields. Using in silico mol. predictions and toxicol. approaches, we further assessed the essential oil selectivity against beneficial organisms such as the fungi Trichoderma asperellum Samuels, Lieckfeldt & Nirenbeand the ladybeetles Eriopis connexa Germar and Coleomegilla maculata DeGeer. Our results revealed that octanoic acid (64.0 %), butanoic acid (10.2 %), and hexanoic acid (8.6 %) were the major oil components. When applied at 30 mg/mL, the essential oil inhibited mycelial growth, whereas at 10 mg/mL, it inhibited the germination of all S. rolfsii sclerotia. The essential oil application at 25 mg/mL reduced disease severity in both curative (56.4 %) and preventive (71.2 %) methods. Essential oil applications (30 mg/mL) did not affect the beneficial fungus T. asperellum nor did it kill any ladybeetle. Our mol. docking analyses reinforced the essential oil selectivity actions predicting higher potential interactions between its major components and the tyrosine-tRNA ligase of S. rolfsii compared to those of T. asperellum. Collectively, our findings demonstrated that Noni essential oil could control S. rolfsii infestations without causing any detrimental effects on relevant beneficial organisms, highlighting its potential as an alternative fungicide.

Industrial Crops and Products published new progress about Coleomegilla maculata. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Formula: C9H18O2.

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

Osorio, Pedro R. A. published the artcileEssential oil of Noni, Morinda citrifolia L., fruits controls the rice stem-rot disease without detrimentally affect beneficial fungi and ladybeetles, Product Details of C11H22O2, the main research area is Morinda fruit essential oil.

The use of botanical fungicides has been presented as a promising tool to replace the use of synthetic compounds, as the former seems to offer reduced risks to the environment and human health. Here, we characterized the major constituents and evaluated the potential of essential oils of Noni, Morinda citrifolia L. plants for controlling stem-rot disease caused by the fungus Sclerotium rolfsii Catt in Neotropical rice, Oryza sativa L., fields. Using in silico mol. predictions and toxicol. approaches, we further assessed the essential oil selectivity against beneficial organisms such as the fungi Trichoderma asperellum Samuels, Lieckfeldt & Nirenbeand the ladybeetles Eriopis connexa Germar and Coleomegilla maculata DeGeer. Our results revealed that octanoic acid (64.0 %), butanoic acid (10.2 %), and hexanoic acid (8.6 %) were the major oil components. When applied at 30 mg/mL, the essential oil inhibited mycelial growth, whereas at 10 mg/mL, it inhibited the germination of all S. rolfsii sclerotia. The essential oil application at 25 mg/mL reduced disease severity in both curative (56.4 %) and preventive (71.2 %) methods. Essential oil applications (30 mg/mL) did not affect the beneficial fungus T. asperellum nor did it kill any ladybeetle. Our mol. docking analyses reinforced the essential oil selectivity actions predicting higher potential interactions between its major components and the tyrosine-tRNA ligase of S. rolfsii compared to those of T. asperellum. Collectively, our findings demonstrated that Noni essential oil could control S. rolfsii infestations without causing any detrimental effects on relevant beneficial organisms, highlighting its potential as an alternative fungicide.

Industrial Crops and Products published new progress about Coleomegilla maculata. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Product Details of C11H22O2.

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

Park, Hyeon-Yong published the artcileDiscrimination of Platycodon grandiflorum and Codonopsis lanceolata using gas chromatography-mass spectrometry-based metabolomics approach, COA of Formula: C17H34O2, the main research area is Platycodon Codonopsis metabolomics gas chromatog mass spectrometry traditional medicine; Codonopsis lanceolata; Gas chromatography-mass spectrometry (GC-MS); Metabolite profilings; Multivariate statistical analysis; Platycodon grandiflorum.

Species of herbaceous flowering perennial plant of the family Campanulaceae such as Platycodon grandiflorum (P. grandiflorum) and Codonopsis lanceolata (C. lanceolata) widely used in traditional medicine to treat different diseases. In spite of different medicinal results after consumption of the plants, it is hard to distinguish between two of them, because of their similar morphol. characteristics. In this study, a gas chromatog.-mass spectrometry (GC-MS) – based metabolite profiling approach was performed and examined to discriminate tuberous roots of P. grandiflorum and C. lanceolate for medicinal purposes. Two basic approaches for sample preparation, headspace solid-phase microextraction (HS-SPME) and solvent extraction were adopted. Multivariate statistical techniques, such as orthogonal partial least-squares discriminant anal. (OPLS-DA) plots showed significant differences between P. grandiflorum and C. lanceolata for polar primary and volatile organic metabolites. A number of potential candidates were suggested as the chemomarkers for discrimination of two plants.

Talanta published new progress about Codonopsis lanceolata. 41114-00-5 belongs to class esters-buliding-blocks, name is Ethyl pentadecanoate, and the molecular formula is C17H34O2, COA of Formula: C17H34O2.

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

Park, Hyeon-Yong published the artcileDiscrimination of Platycodon grandiflorum and Codonopsis lanceolata using gas chromatography-mass spectrometry-based metabolomics approach, Application of Methyl decanoate, the main research area is Platycodon Codonopsis metabolomics gas chromatog mass spectrometry traditional medicine; Codonopsis lanceolata; Gas chromatography-mass spectrometry (GC-MS); Metabolite profilings; Multivariate statistical analysis; Platycodon grandiflorum.

Species of herbaceous flowering perennial plant of the family Campanulaceae such as Platycodon grandiflorum (P. grandiflorum) and Codonopsis lanceolata (C. lanceolata) widely used in traditional medicine to treat different diseases. In spite of different medicinal results after consumption of the plants, it is hard to distinguish between two of them, because of their similar morphol. characteristics. In this study, a gas chromatog.-mass spectrometry (GC-MS) – based metabolite profiling approach was performed and examined to discriminate tuberous roots of P. grandiflorum and C. lanceolate for medicinal purposes. Two basic approaches for sample preparation, headspace solid-phase microextraction (HS-SPME) and solvent extraction were adopted. Multivariate statistical techniques, such as orthogonal partial least-squares discriminant anal. (OPLS-DA) plots showed significant differences between P. grandiflorum and C. lanceolata for polar primary and volatile organic metabolites. A number of potential candidates were suggested as the chemomarkers for discrimination of two plants.

Talanta published new progress about Codonopsis lanceolata. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Application of Methyl decanoate.

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

Ianni, Andrea published the artcileZinc supplementation of lactating dairy cows: effects on chemical-nutritional quality and volatile profile of Caciocavallo cheese, Safety of Ethyl nonanoate, the main research area is lactation cheese chem nutritional quality zinc feeding experiment; Caciocavallo Cheese; Friesian Cow; Lipid Peroxidation; Lipid Profile; Volatile Compound; Zinc Oxide.

Effect of dietary zinc supplementation of Friesian cows on chem.-nutritional and aromatic properties of Caciocavallo cheese after 7 days (C7) and 120 days (C120) of ripening. The control group (CG) was fed with a conventional complete diet, while the exptl. group (zinc group, ZG) received a daily zinc supplementation of 60 mg for kg of dry complete feed. During the exptl. period, the milk yield was monitored and samples of milk and caciocavallo cheese were collected and analyzed for chem.-nutritional composition and aromatic profile. The enrichment of dairy cows diet with zinc, did not influence milk yield and composition, however a marked reduction of somatic cell count was evidenced. Both in milk and cheese the ZG samples were characterized by a lower concentration of satured fatty acids and an increase in oleic, vaccenic and rumenic acids. The aromatic profile of dairy products was also pos. affected by dietary zinc intake, with an increase in concentration of carboxylic acids, esters and lactones. The present results suggest a pos. role of dietary zinc intake in improving the quality of bovine milk and related cheese, in particular for the increase in concentration of bioactive fatty acids such as rumenic acid. The changes evidenced in cheese through the anal. of the volatile profile, would be consistent with the development of interesting organoleptic properties, although further evaluations should be performed to confirm the consumer acceptability of these changes.

Asian-Australasian Journal of Animal Sciences published new progress about Cheese (Caciocavallo). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Safety of Ethyl nonanoate.

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

Shin, Minjoong published the artcileBilayer-folded lamellar mesophase induced by random polymer sequence, Related Products of esters-buliding-blocks, the main research area is polyacrylic amphiphilic random copolymer radical RAFT gradient copolymerization kinetics; lamellar mesophase self assembly.

Randomness is perceived in two different extremes, in macroscopic homogeneity and local heterogeneity, but apparently far away from order. Here we show that a periodic order spontaneously arises from a binary random copolymer when self-assembly occurs in an ensemble containing > 1015 possible chain sequences. A Bernoullian distribution of hydrophilic and hydrophobic side chains grafted onto a linear backbone was constructed by random copolymerization When the polymer chains associate in water, a sequence matching problem occurs because of the drastic heterogeneity in sequence: this is believed to generate local curvature mismatches which deviate from the ensemble-averaged interfacial curvature. Periodic folding of the self-assembled bilayer stabilizes the curvature instability as recurring hinges. Reminiscent of chain-folded lamellae found in polymer crystallization, this new liquid crystalline mesophase, characterized as bilayer-folded lamellae, manifests itself as an anisotropically alignable birefringent hydrogel with structural hierarchy across multiple length scales.

Nature Communications published new progress about Chain transfer agents. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Related Products of esters-buliding-blocks.

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

Sun, Changsheng published the artcileFormation of n-Hexane-in-DMF Nonaqueous Pickering Emulsions: ABC Triblock Worms versus AB Diblock Worms, Application of Dodecyl 2-methylacrylate, the main research area is formation hexane nonaqueous pickering emulsion triblock worm.

Nonaqueous Pickering emulsions exhibit promising applications in many industrial areas but have been relatively less studied in the past. In this study, n-hexane-in-DMF nonaqueous Pickering emulsions stabilized by core cross-linked copolymer worms with mixed shells are demonstrated for the first time. Core cross-linked copolymer worms with mixed shells were prepared by seeded reversible addition-fragmentation chain transfer (RAFT) quasi-solution polymerization Specifically, polystyrene-poly(4-vinylpyridine) (PS-P4VP) diblock copolymer worms were first prepared via RAFT-mediated dispersion polymerization in toluene under the given conditions using PS as both the macro-CTA and the stabilizer block. After the chem. crosslinking of P4VP cores, PS-P4VP diblock copolymer worms were chain-extended with LMA in DMF/toluene (1:9, weight ratio) mixed solvents, producing core cross-linked PS-P4VP-PLMA worms with PS/PLMA mixed shells. The as-prepared core cross-linked PS-P4VP-PLMA worms with mixed PS/PLMA shells were further utilized as Pickering emulsifiers for the generation of nonaqueous n-hexane-in-DMF Pickering emulsions. The emulsifying performances of mixed-shell copolymer worms were compared with those of their spherical and linear analogs with entirely identical chem. compositions as well as PS-P4VP diblock copolymer worm precursors, resp.

Langmuir published new progress about Chain transfer agents. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application of Dodecyl 2-methylacrylate.

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