Category: 140-11-4

Najar, Basma published the artcileChemical Composition and in Vitro Cytotoxic Screening of Sixteen Commercial Essential Oils on Five Cancer Cell Lines, Application of Benzyl acetate, the main research area is essential oil composition cytotoxic screening; K562; MCF7; MDA-MB-231; SHSY-5Y; T47D; cytotoxicity.

The in vitro cytotoxic activity on human cancer cell lines of sixteen com. EOs such as Aloysia citriodora, Boswellia sacra, Boswellia serrata, Cinnamomum zeylanicum, Cistus ladanifer, Citrus × aurantium, Citrus limon, Citrus sinensis, Cymbopogon citratus, Foeniculum vulgare, Illicium verum, Litsea cubeba, Satureja montana, Syzygium aromaticum, Thymus capitatus and Thymus vulgaris was performed using the MTT reduction assay. The screening was carried out on human cancer cells of breast adenocarcinoma (MCF7, T47D and MDA-MB-231), chronic myelogenous erythroleukemia (K562) and neuroblastoma cell lines (SH-SY5Y). C. zeylanicum and L. cubeba EOs were the most active on almost all the cell lines studied and thus could be promising as an anticancer agent. These two species showed a difference in their composition even though they belong to the Lauraceae family. Almost 57% of the true cinnamon composition was made of (E)-cinnamaldehyde, while L. cubeba showed citral as the major compound (68.9%). The K562 cells were the most sensitive to these oils with an IC50 ranging from 5.2 parts-per million (ppm) (C. zeylanicum) to 11.1 ppm (L. cubeba). The latter oil also showed an important cytotoxicity on MDA-MB-231 (13.4 ppm).

Chemistry & Biodiversity published new progress about Aloysia citriodora. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Application of Benzyl acetate.

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

Park, Min Kyung published the artcileComparison of volatile profiles in Fagopyrum esculentum (buckwheat) soksungjang prepared with different starter cultures during fermentation, Related Products of esters-buliding-blocks, the main research area is Fagopyrum pentanoic acid dimethyl carbonate Bacillus Lactobacillus food fermentation; Fermentation; Partial least squares-discriminant analysis; Soksungjang; Soybean koji; Volatile profiles.

This study investigated the differences and changes in the volatile profiles of buckwheat soksungjang (BS) inoculated with multiple microbial starters (Lactobacillus brevis + Aspergillus oryzae, BS-LA vs. Lactobacillus brevis + Bacillus amyloliquefaciens, BS-LB) during fermentation using SPME coupled with GC-MS and partial least square-discriminant anal. BS samples fermented for 5 wk could be differentiated from other BS samples with shorter fermentation periods, and the BS-LA and BS-LB samples fermented for 5 wk were separated Acids, benzenes, and esters were main volatile compounds in both BS samples, however, their differences and changes were varied. The increase of 3-methylbutanoic acid was bigger in BS-LB than BS-LA, while the contents of 2- and 3-methylbutanal were relatively higher in BS-LA than BS-LB. Furthermore, the contents of esters of BS-LA significantly increased during fermentation These results indicate that the volatile profiles of BS samples depend on the fermentation periods and the combination of microbial starters.

Food Science and Biotechnology published new progress about Aspergillus oryzae. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Related Products of esters-buliding-blocks.

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

Rodriguez-Donis, Ivonne published the artcileModelling and experimental validation of dimethyl carbonate solvent recovery from an aroma mixture by batch distillation, SDS of cas: 140-11-4, the main research area is aroma mixture dimethyl carbonate solvent recovery batch distillation.

Modeling and exptl. validation of solvent recovery from an aroma mixture by batch distillation process is presented, with particular emphasis of the effect of the prediction of the physicochem. properties and the phase equilibrium data on the content of the aroma compounds in the distillate cuts. The illustrative case study refers to an industrial batch distillation to recover di-Me carbonate (DMC) from an extract generated by a solvent extraction process involving variable natural raw materials for tailored perfume and fragrance applications. Due to the high number of aroma compounds in natural extracts, a synthetic mixture containing six target aroma compounds (α-pinene, eucalyptol, linalool, cis-3-hexenol, fenchone and benzyl acetate) was mixed with DMC for the modeling and exptl. studies of the batch distillation process. The methodol. is tested through the simulation of the process with BatchColumn software. As physicochem. properties of the aroma compounds and the vapor-liquid equilibrium (VLE) of all involved mixtures are required for simulation study, group contribution methods are used to predict missing properties such as vapor pressure, vaporisation enthalpy and liquid and vapor heat capacities. Simulation results are in good agreement with experiments carried out in a fully automated batch distillation column at 15 kPa and help optimize the industrial process operation. The proposed methodol. can be applied for the design of other solvent recovery process in fragrance industry.

Chemical Engineering Research and Design published new progress about Batch distillation. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, SDS of cas: 140-11-4.

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

Garmendia, Sofiem published the artcileSelf-catalyzed folding of single chain nanoparticles (SCNPs) by NHC-mediated intramolecular benzoin condensation, Application of Benzyl acetate, the main research area is styrene vinylbenzaldehyde vinylbenzylethylbenzimidazolium chloride based catalyst benzyl acetate preparation.

A self-catalyzed folding strategy to form single chain nanoparticles (SCNPs) was developed via an intramol. N-heterocyclic carbene (NHC)-mediated benzoin condensation. Benzaldehyde, styrene and benzimidazolium chloride units were randomly incorporated into a poly(ionic liquid)-based (PIL) copolymer precursor by reversible addition-fragmentation chain transfer (RAFT) copolymerization Post-chem. modification of this linear precursor by insertion of a non-innocent acetate counter-anion into the benzimidazolium moieties conferred thermolatent catalytic behavior owing to the equilibrium between benzimidazolium acetate units and corresponding NHC ones. Upon heating, catalytically active NHCs allowed the formation of benzoin-type intramol. cross-links, thus folding linear chains into SCNPs. NHC moieties became deactivated after cooling to room temperature, which enabled easy isolation and purification of the covalently and intramolecularly cross-linked SCNPs. Importantly, the latent NHC moieties were proven to retain their catalytic activity when arranged into SCNPs as evidenced through their reactivation by simple heating. The catalytic activity of these SCNPs was further confirmed by implementing another NHC-organocatalyzed reaction, namely, transesterification reaction between vinyl acetate and benzyl alc. This work represents the first example of catalysis by a parent linear precursor which drives its own folding and remains catalytically active.

Polymer Chemistry published new progress about Hydrodynamic radius. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Application of Benzyl acetate.

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

Jimenez-Sanchez, Maria published the artcileUse of ultrasound at a pilot scale to accelerate the ageing of sherry vinegar, Computed Properties of 140-11-4, the main research area is sherry vinegar aging ultrasound; Accelerated ageing; Oak; Phenolic compounds; Sherry vinegar; Ultrasound; Volatile compounds.

In the present work, the accelerated ageing process of sherry vinegar has been studied at pilot scale by means of the joint application of ultrasound, micro-oxygenation and wood chips (American oak, French oak and Spanish oak). The CIELab parameters have been studied as well as the polyphenolic and volatile content of the aged vinegar samples. Vinegars aged with American oak presented different chromatic characteristics to those aged with French and Spanish oak and a lower polyphenolic and volatile content than the latter ones. On the other hand, Spanish oak generated vinegars with a higher content of volatile compounds and an intermediate polyphenolic profile between those obtained using French and American oak. In addition, the use of ultrasound for a period between 4 and 21 days, generated vinegars with similar characteristics to others that were aged in the traditional way for between 2 and 6 mo. It has been demonstrated that the use of ultrasound, combined with micro-oxygenation and chip addition, is a technique which can accelerate the ageing process of vinegars at a pilot scale, so it could be a viable alternative to obtain sherry vinegars aged in a shorter time.

Ultrasonics Sonochemistry published new progress about Aging of materials. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Computed Properties of 140-11-4.

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

Qi, Dandan published the artcileCharacterization of the volatile compounds profile of the innovative broken oolong-black tea in comparison with broken oolong and broken black tea, Formula: C9H10O2, the main research area is volatile compound oolong black tea.

Broken oolong-black tea is an innovative tea in China produced by applying characteristic manufacture crafts of broken oolong tea (bruising) and broken black tea (fermentation) on the manufacture of tea and it has both aroma features of broken oolong tea and broken black tea. The aim of this study is to investigate the differences of the volatile compounds among broken oolong-black, broken oolong and broken black tea made by Huangzhixiang (HZX) and Huangdan (HD) varieties by gas chromatog.-mass spectrometry (GC-MS) combined with chemometirc anal. The results suggested significant differences on both aroma quality and volatile compounds profile of three kinds of tea. Chemometric anal. showed that 47 and 52 differential volatile compounds were identified to distinguish three kinds of teas made by HZX and HD, resp., and the differences of volatile compounds among the tea samples were mostly quant. rather than qual. Besides, compounds with floral and fruity aroma increased in broken oolong-black tea compared with the others, while compounds with green aroma decreased in broken oolong-black tea. Quant. descriptive anal. of the aroma showed that sweet aroma was a new trait of broken oolong-black tea compared with broken oolong tea while green aroma disappeared compared with broken black tea. Our results provide the theor. and practical meaning for the application of two characteristic crafts from different tea manufacture on the innovation of tea manufacture

Food Control published new progress about Black tea beverages. 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

Xiao, Zuobing published the artcileCharacterization of the key aroma compounds in three world-famous black teas, Quality Control of 140-11-4, the main research area is hexanal 3methylbutanal betamyrcene black tea aroma compound.

The volatile compounds of three world-famous black teas (Darjeeling, DJL, Keemun, KM, and Ceylon, CL) were extracted by stir bar sorptive extraction (SBSE), and analyzed by gas chromatog.-olfactometry (GC-O), gas chromatog.-mass spectrometry (GC-MS). The results indicated that 78, 76, and 69 volatile compounds were detected in the three tea infusions. And 9 sulfur compounds in black teas were identified by gas chromatog.-flame photometric detection (GC-FPD). In addition, a total of 42 aroma compounds were perceived and 38 compounds were identified as important aroma compounds due to their high odor activity values (OAVs), such as 3-methylbutanal (OAV: 24-82), linalool (OAV: 24-64), geraniol (OAV: 2-97), β-ionone (OAV: 54-122), and cis-jasmone (OAV: 2-119). According to the results of aroma recombination and omission experiments, 2-methylbutanal, linalool, Me salicylate and β-cyclocitral were confirmed to be the key aroma compounds in Darjeeling black tea, 3-methylbutanal, hexanal, β-myrcene, and Me salicylate were the key aroma compounds in Keemun, while β-ionone, linalool, 2-methylbutanal, and salicylaldehyde were the key aroma compounds in Ceylon black tea.

European Food Research and Technology published new progress about Black tea beverages. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Quality Control of 140-11-4.

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

Badoei-dalfard, Arastoo published the artcileLipase immobilization on glutaraldehyde activated graphene oxide/chitosan/cellulose acetate electrospun nanofibrous membranes and its application on the synthesis of benzyl acetate, Formula: C9H10O2, the main research area is glutaraldehyde graphene oxide chitosan cellulose acetate electrospun nanofibrous membrane; Benzyl acetate; Characterization; Electrospinning; Lipase immobilization; Nanofiber membranes.

In this research, lipase Km12 was immobilized on the glutaraldehyde-activated graphene oxide/chitosan/cellulose acetate nanofibers (GO/Chit/CA NFs) prepared by the electrospinning method. This immobilized lipase exhibited a higher activity value than the free lipase in the acidic pH region. This enzyme showed a 10 °C shift in the maximum temperature activity. Results displayed that the Vmax value of NFs-lipase was 0.64 μmol/min, while it was gained 0.405 μmol/min for the free lipase. The activity of NFs-lipase was reserved 100% after 10 min maintaining at 60 °C, in which the free lipase only kept 75% of its original activity. Moreover, a 20% enhancement in the lipase activity was observed for NFs-lipase after 180 min of incubation at 60 °C, compared to the free enzyme. Reusability studies exhibited that the immobilized lipase well-kept 80% of its original activity after 10 cycles of reusing. Results displayed that 14% of the protein was leaked from NFs-lipase at the same condition. Transesterification results indicated that the free lipase exhibited 65% and 85% conversation level of benzyl acetate after 12 and 24 h of incubation. Besides, the immobilized lipase showed 80% and 95% conversation level at the same condition. These results indicated the high performance of free and immobilized lipase in the production of benzyl acetate for applications in the perfume and cosmetic industries.

Colloids and Surfaces, B: Biointerfaces published new progress about Crosslinking agents. 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

Fedunov, Roman G. published the artcileTheory of fluorescence spectrum dynamics and its application to determining the relaxation characteristics of the solvent and intramolecular vibrations, Recommanded Product: Benzyl acetate, the main research area is fluorescence spectrum dynamics solvent intramol vibration relaxation characteristics.

A general anal. expression for the transient fluorescence spectrum is derived. The formation of a wave packet in the excited state of a fluorophore is described, assuming that the pump pulse has a Gaussian time-profile. The expression explicitly connects the relaxation characteristics of the medium with the spectral dynamics of a fluorophore. Fitting the expression to exptl. spectral dynamics allows obtaining the solvent relaxation function. So far this approach was applicable for the anal. of exptl. data when the pump pulse does not populate excited sublevels of intramol. high-frequency vibrational modes. Here, the approach is generalized to include vibrational relaxation in the excited electronic state. In this case, fitting to the exptl. spectral dynamics provides reliable information not only on the solvent relaxation, but also on the relaxation time constants of intramol. high-frequency vibrational modes. This approach is applied to the excited state dynamics of coumarin 153 in multiple solvents, obtained from broadband fluorescence upconversion spectroscopy.

Journal of Molecular Liquids published new progress about Dielectric constant. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Recommanded Product: Benzyl acetate.

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

Molisso, Susannah published the artcileMolecular interaction and partitioning in α-keratin using 1H NMR spin-lattice (T1) relaxation times, Name: Benzyl acetate, the main research area is hair alpha keratin mol interaction partitioning; spin lattice relaxation time 1HNMR; hair; interactions; keratin; populations; relaxation; solid-state NMR.

The interactions between small mols. and keratins are poorly understood. In this paper, a NMR method is presented to measure changes in the 1H T1 relaxation times of small mols. in human hair keratin to quantify their interaction with the fiber. Two populations of small-mol. compounds were identified with distinct relaxation times, demonstrating the partitioning of the compounds into different keratin environments. The changes in relaxation time for solvent in hair compared with bulk solvent were shown to be related to the mol. weight (MW) and the partition coefficient, LogP, of the solvent investigated. Compounds with low MWs and high hydrophilicities had greater reductions in their T1 relaxation times and therefore experienced increased interactions with the hair fiber. The relative population sizes were also calculated This is a significant step towards modeling the behavior of small mols. in keratinous materials and other large insoluble fibrous proteins.

Journal of the Royal Society, Interface published new progress about Electrostatic force. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Name: Benzyl acetate.

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