Author: Jessica.F

Nie, Qixing;Hu, Jielun;Chen, Haihong;Geng, Fang;Nie, Shaoping published 《Arabinoxylan ameliorates type 2 diabetes by regulating the gut microbiota and metabolites》. The research results were published in《Food Chemistry》 in 2022.Application of 124-06-1 The article conveys some information:

Type 2 diabetes (T2D) is a metabolic disease characterized by hyperglycemia. Intake of dietary fiber is inversely associated with risks of T2D. Here, metabolomics and 16S rRNA gene sequencing were employed to investigate the effects of arabinoxylan on gut microbiota and their metabolites in type 2 diabetic rats. T2D increased the abundance of opportunistic pathogens (such as Desulfovibrio and Klebsiella) and the levels of 12α-hydroxylated bile acids and acylcarnitines (C3) in diabetic rats, which eventually contribute to insulin resistance and hyperglycemia. Supplementation with arabinoxylan promoted the growth of fiber-degrading bacteria to increase short-chain fatty acids (SCFAs), as well as decreased the abundance of opportunistic pathogens. Arabinoxylan treatment also decreased the concentrations of 12α-hydroxylated bile acids, and increased the levels of equol, indolepropionate, and eicosadienoic acid. This study indicated that the beneficial effects of arabinoxylan on T2D may be partially attributed to the modification of gut microbiota and related metabolites.Ethyl tetradecanoate (cas: 124-06-1) were involved in the experimental procedure.

Ethyl tetradecanoate(cas: 124-06-1) is a natural product found in Psidium guajava, Litchi chinensis, and other organisms.Application of 124-06-1Ethyl myristate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of myristic acid with the hydroxy group of ethanol.

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

Pyser, Joshua B.;Baker Dockrey, Summer A.;Benitez, Attabey Rodriguez;Joyce, Leo A.;Wiscons, Ren A.;Smith, Janet L.;Narayan, Alison R. H. published 《Stereodivergent, Chemoenzymatic Synthesis of Azaphilone Natural Products》 in 2019. The article was appeared in 《Journal of the American Chemical Society》. They have made some progress in their research.Reference of Methyl 2,4-dihydroxy-3,6-dimethylbenzoate The article mentions the following:

Selective access to a targeted isomer is often critical in the synthesis of biol. active mols. Whereas small-mol. reagents and catalysts often act with anticipated site- and stereoselectivity, this predictability does not extend to enzymes. Further, the lack of access to catalysts that provide complementary selectivity creates a challenge in the application of biocatalysis in synthesis. Here, we report an approach for accessing biocatalysts with complementary selectivity that is orthogonal to protein engineering. Through the use of a sequence similarity network (SSN), a number of sequences were selected, and the corresponding biocatalysts were evaluated for reactivity and selectivity. With a number of biocatalysts identified that operate with complementary site- and stereoselectivity, these catalysts were employed in the stereodivergent, chemoenzymic synthesis of azaphilone natural products. Specifically, the first syntheses of trichoflectin, deflectin-1a, and lunatoic acid A were achieved. In addition, chemoenzymic syntheses of these azaphilones supplied enantioenriched material for reassignment of the absolute configuration of trichoflectin and deflectin-1a based on optical rotation, CD spectra, and X-ray crystallog. To complete the study, the researchers used Methyl 2,4-dihydroxy-3,6-dimethylbenzoate (cas: 4707-47-5) .

Methyl 2,4-dihydroxy-3,6-dimethylbenzoate(4707-47-5) is used in biological study as role of androgens in inducing distinct response of epithelial-mesenchymal transition factors in human prostate cancer cells.Reference of Methyl 2,4-dihydroxy-3,6-dimethylbenzoate

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

Computed Properties of C15H28O2In 2021, Demir Kanbur, Esra;Yuksek, Turan;Atamov, Vagif;Ozcelik, Ali Erdem published 《A comparison of the physicochemical properties of chestnut and highland honey: The case of Senoz Valley in the Rize province of Turkey》. 《Food Chemistry》published the findings. The article contains the following contents:

The aim of this study was to determine the physicochem. parameter changes, aroma, melissopalynol. properties, and heavy metal content of honey produced from different types of flora (chestnut and highland) in the Senoz Valley. For this purpose, the distribution of beehives at different elevation levels in the research area was determined by a layered random sampling method. Some characteristics of the honey samples were analyzed by standard laboratory methods. The highest average color (L and b) and the glucose, sucrose, Brix, Cd, Pb, Ni, Zn, and Cr values were found in the highland honeys; the highest color (a) and fructose, F/G ratio, proline, pH, conductivity, Fe, Cu, Al, and Mn values were found in the chestnut honeys. The difference between highland and chestnut honeys was statistically significant in terms of color (L and a), F/G ratio, proline, pH, elec. conductivity, Pb, Cu, and Mn. A total of 146 aromatic components were isolated in the chestnut and highland honeys.Oxacyclohexadecan-2-one (cas: 106-02-5) were involved in the experimental procedure.

Oxacyclohexadecan-2-one(cas:106-02-5) is a monomer used to make PGA-co-pentadecalactone polymers to be used in the development of directly compressed prolonged release tablets of slightly soluble drugs such as ketoprofen.Computed Properties of C15H28O2It may be used for the synthesis of poly(pentadecanolide) (PPDL) by Novozyme 435 catalyzed ring-opening polymerization.

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

HPLC of Formula: 124-06-1《Molecular mechanism of high pressure shear grinding on Feng-flavour Chinese Baijiu ageing》 was published in 2022. The authors were Jia, Wei;Fan, Zibian;Du, An;Shi, Lin, and the article was included in《Food Research International》. The author mentioned the following in the article:

Ultrahigh-pressure homogenization is a powerful technique for accelerating Baijiu ageing. In this study, the mol. mechanism of artificial ageing was thoroughly investigated utilizing foodomics combined with a mass spectrum information optimization program. Various characterizations of compounds in the ageing process were performed through ultra high performance liquid chromatog. quadrupole-orbitrap high resolution mass spectrometry (UHPLC-Q-Orbitrap) based colloid theoretics. High-pressure shear grinding provides a high-pressure and high-temperature environment for Baijiu, accelerating the formation of flavor compounds and the decomposition of odor and harmful substances, thus improving the sensory characteristics of Feng-flavor Baijiu and shortening the ageing time. A total of 2069 substances were identified according to fragment spectra and Bayesian network model-based peak distribution. Mols. with VIP > 1, including 14 esters, 10 acids, 4 ketones, 3 aldehydes, 2 alcs. and 2 phenols, were quantified as potential markers of chemometric anal. A novel prediction model for Baijiu ageing degree was furnished, and ageing years of Feng-flavor Chinese Baijiu were accurately predicted by factor anal. with KMO 0.784 and a polynomial regression model with r 0.94. The results demonstrated that in 400 bar, fresh distilled Baijiu could reach a natural ageing effect of 6.43 years, which was consistent with the sensory evaluation. And Ethyl tetradecanoate (cas: 124-06-1) was used in the research process.

Ethyl tetradecanoate(cas: 124-06-1) is a natural product found in Psidium guajava, Litchi chinensis, and other organisms.HPLC of Formula: 124-06-1Ethyl myristate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of myristic acid with the hydroxy group of ethanol.

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

Ari, Ferda;Ulukaya, Engin;Oran, Seyhan;Celikler, Serap;Ozturk, Sule;Ozel, Mustafa Zafer published 《Promising anticancer activity of a lichen, Parmelia sulcata Taylor, against breast cancer cell lines and genotoxic effect on human lymphocytes》 in 2015. The article was appeared in 《Cytotechnology》. They have made some progress in their research.Application In Synthesis of Methyl 2,4-dihydroxy-3,6-dimethylbenzoate The article mentions the following:

Plants are still to be explored for new anti-cancer compounds because overall success in cancer treatment is still not satisfactory. As a new possible source for such compounds, the lichens are recently taking a great attention. We, therefore, explored both the genotoxic and anti-growth properties of lichen species Parmelia sulcata Taylor. The chem. composition of P. sulcata was analyzed with comprehensive gas chromatog.-time of flight mass spectrometry. Anti-growth effect was tested in human breast cancer cell lines (MCF-7 and MDA-MB-231) by the MTT and ATP viability assays, while the genotoxic activity was studied by assays for micronucleus, chromosomal aberration and DNA fragmentation in human lymphocytes culture. Cell death modes (apoptosis/necrosis) were morphol. assessed. P. sulcata inhibited the growth in a dose-dependent manner up to a dose of 100 μg/mL and induced caspase-independent apoptosis. It also showed genotoxic activity at doses (>125 μg/mL) higher than that required for apoptosis. These results suggest that P. sulcata may induce caspase-independent apoptotic cell death at lower doses, while it may be genotoxic at relatively higher doses.Methyl 2,4-dihydroxy-3,6-dimethylbenzoate (cas: 4707-47-5) were involved in the experimental procedure.

Methyl 2,4-dihydroxy-3,6-dimethylbenzoate(4707-47-5) is used in biological study as role of androgens in inducing distinct response of epithelial-mesenchymal transition factors in human prostate cancer cells.Application In Synthesis of Methyl 2,4-dihydroxy-3,6-dimethylbenzoate

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

Yeong, Siew Ping;Chan, Yen San;Law, Ming Chiat;Ling, Jordy Kim Ung published 《Improving cold flow properties of palm fatty acid distillate biodiesel through vacuum distillation》 in 2022. The article was appeared in 《Journal of Bioresources and Bioproducts》. They have made some progress in their research.SDS of cas: 112-62-9 The article mentions the following:

Palm fatty acid distillate (PFAD), a byproduct of refining process of crude palm oil can be used as a potential feedstock for biodiesel production However, the application of palm oil-based biodiesel is often hinder by its poor cold flow properties (CFP). Biodiesel fuel with poor CFP may crystallize and result in clogging of fuel lines, filters and injectors that cause engine operability problems. For that, a vacuum distillation method was designed and its feasibility and efficiency in improving the CFP was examined A total of 13.60wt% of total saturated fatty acid Me esters were successfully removed from the PFAD biodiesel, resulting in the improvement of the cloud point (CP), cold filter plugging point (CFPP) and pour point (PP) of PFAD biodiesel from 20°C, 19°C, and 15°C to 13°C, 11°C, and 9°C, resp. It is remarkable that the improved CFPP satisfied the requirements for grade C summer biodiesel for temperate climates in EN 14212 standard Addnl., Sarin (U_FAME) empirical correlation was evaluated and it was found to have a good prediction of CFP for PFAD biodiesel, with lower than 2°C deviation.Methyl oleate (cas: 112-62-9) were involved in the experimental procedure.

Methyl oleate(cas: 112-62-9) is a fatty acid methyl ester resulting from the formal condensation of the carboxy group of oleic acid with methanol.SDS of cas: 112-62-9 Methyl oleate(cas: 112-62-9) is an intermediate for detergents, emulsifiers, wetting agents, stabilizers, textile treatments, plasticizers for duplicating inks, rubbers, waxes etc.

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

Kasting, B. J.;Beasley, M. S.;Guiseppi-Elie, A.;Richert, R.;Ediger, M. D. published 《Relationship between aged and vapor-deposited organic glasses: Secondary relaxations in methyl-m-toluate》. The research results were published in《Journal of Chemical Physics》 in 2019.Recommanded Product: 99-36-5 The article conveys some information:

In situ interdigitated electrode broadband dielec. spectroscopy was used to characterize the excess wing relaxations in vapor-deposited and aged glasses of methyl-m-toluate (MMT, T_g = 170 K). MMT displays typical excess wing relaxations in dielec. spectra of its supercooled liquid and glasses. Phys. vapor deposition produced glasses with degrees of suppression of the excess wing relaxation that varied systematically with deposition conditions, up to a maximum suppression of more than a factor of 3. The glass deposited at a relatively high temperature, 0.96 T_g (163 K), showed the same amount of suppression as that of a liquid-cooled glass aged to equilibrium at this temperature The suppression of the excess wing relaxation was strongly correlated with the kinetic stability of the vapor-deposited glasses. Comparisons with aged MMT glasses allowed an estimate of the structural relaxation time of the vapor-deposited glasses. The dependence of the estimated structural relaxation times upon the substrate temperature was found to be stronger than Arrhenius but weaker than Vogel-Fulcher-Tammann dependence predicted from extrapolation of relaxation times in the supercooled liquid Addnl., this work provides the first example of the separation of primary and secondary relaxations using phys. vapor deposition. (c) 2019 American Institute of Physics.Methyl 3-methylbenzoate (cas: 99-36-5) were involved in the experimental procedure.

Methyl 3-methylbenzoate (cas: 99-36-5) is a common ester.Esters are common in organic chemistry and biological materials, and often have a pleasant characteristic, fruity odor. This leads to their extensive use in the fragrance and flavor industry. Ester bonds are also found in many polymers.Recommanded Product: 99-36-5

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

Quality Control of Oxacyclohexadecan-2-one《Quadruple-shape hydrogels》 was published in 2019. The authors were Balk, Maria;Behl, Marc;Lendlein, Andreas, and the article was included in《Smart Materials and Structures》. The author mentioned the following in the article:

The capability of directed movements by two subsequent shape changes could be implemented in shape-memory hydrogels by incorporation of two types of crystallizable side chains. While in nonswollen polymer networks even more directed movements could be realized, the creation of multishape hydrogels is still a challenge. We hypothesize that a quadruple-shape effect in hydrogels can be realized, when a swelling capacity almost independent of temperature is generated, whereby directed movements could be enabled, which are not related to swelling. In this case, entropy elastic recovery could be realized by hydrophilic segments and the fixation of different macroscopic shapes by means of three semi-crystalline side chains generating temporary crosslinks. Monomethacrylated semicrystalline oligomers were connected as side chains in a hydrophilic polymer network via radical copolymerization Computer assisted modeling was utilized to design a demonstrator capable of complex shape shifts by creating a casting mold via 3D printing from polyvinyl alc. The demonstrator was obtained after copolymerization of polymer network forming components within the mold, which was subsequently dissolved in water. A thermally-induced quadruple-shape effect was realized after equilibrium swelling of the polymer network in water. Three directed movements were successfully obtained when the temperature was continuously increased from 5°C to 90°C with a recovery ratio of the original shape above 90%. Hence, a thermally-induced quadruple-shape effect as new record for hydrogels was realized. Here, the temperature range for the multi-shape effect was limited by water as swelling media (0°C-100°C), simultaneously distinctly separated thermal transitions were required, and the overall elasticity indispensable for successive deformations was reduced as result of partially chain segment orientation induced by swelling in water. Conclusively the challenges for penta- or hexa-shape gels are the design of systems enabling higher elastic deformability and covering a larger temperature range by switching to a different solvent. The experimental procedure involved many compounds, such as Oxacyclohexadecan-2-one (cas: 106-02-5) .

Oxacyclohexadecan-2-one(cas:106-02-5) is a monomer used to make PGA-co-pentadecalactone polymers to be used in the development of directly compressed prolonged release tablets of slightly soluble drugs such as ketoprofen.Quality Control of Oxacyclohexadecan-2-oneIt may be used for the synthesis of poly(pentadecanolide) (PPDL) by Novozyme 435 catalyzed ring-opening polymerization.

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

COA of Formula: C9H10O2In 2019, Zhang, Rong;Yang, Xi;Tao, Zheng;Wang, Xiao;Wang, Huixiang;Wang, Liancheng;Lv, Baoliang published 《Insight into the Effective Aerobic Oxidative Cross-Esterification of Alcohols over Au/Porous Boron Nitride Catalyst》. 《ACS Applied Materials & Interfaces》published the findings. The article contains the following contents:

Boron nitride (BN) has attracted great attention with an unexpected ability in aerobic catalysis. Still, its related probe reactions are relatively rare, and the effect of the BN-supported metal catalyst on O₂ activation is still ambiguous, and opinions are varied. In this work, the porous BN (pBN)-supported Au catalyst with a porous structure and exposed edges exhibits high activity in the oxidative cross-esterification reactions between the aromatic and C₁-C₃ aliphatic alcs. at ambient temperature The turnover frequency value for Me benzoate is 118 h^-1 at 30 °C, and the calculated apparent activation energy (Ea, 58 kJ/mol) is comparable to that of AuPd/TiO₂, Ru/Al₂O₃, and PdBiTe catalysts. Combined with temperature-programmed desorption (TPD) results, the loading of Au enhances the desorption of O₂ and the interaction with alcs.; thus, a synergistic effect between the O-rich pBN and Au is considered. The free-radical scavenger can dramatically suppress the conversion (∼6%), suggesting that the reaction proceeds via the O₂* radicals. According to the vibration of ν_O-O, δ_OO-H, and ν_B-O-O-B detected by attenuated total reflectance-IR spectroscopy (ATR-IR), we are prone to consider the oxygen activation route by the edge B atoms. Then, a possible L-H reaction mechanism was proposed: benzyl alc. and O₂ adsorb on the Au/pBN initially, then O₂ is converted to O₂*, and the α-H elimination proceeds; as the semi-acetal formed, another α-H elimination proceeds and Me benzoate is finally formed. The experimental procedure involved many compounds, such as Methyl 3-methylbenzoate (cas: 99-36-5) .

Methyl 3-methylbenzoate (cas: 99-36-5) is a common ester.Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids.COA of Formula: C9H10O2 Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries.

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

HPLC of Formula: 124-06-1《Gas chromatography study of N-hexane and chloroform fractions of ethanol extract of Melastoma malabathricum L. leaves: an in vitro study of antioxidant and SPF values》 was published in 2022. The authors were Apridamayanti, P.;Pratiwi, L.;Sari, R., and the article was included in《International Journal of Pharmacy and Pharmaceutical Sciences》. The author mentioned the following in the article:

This research aimed to qual. determine the chem. compound constituents, antioxidant capacity, and sun protection factor (SPF) value of extract of the leaves of Melastoma malabathricum L. using GC-MS. The detected compounds were identified by processing the raw GC-MS data using ChemStation software and comparing results with the NIST mass spectral database. Antioxidant capacity was measured using 1,2-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging and ferric-reducing antioxidant power (FRAP) assays. The SPF contained in the n-hexane and chloroform fractions separated from the ethanol extract of the leaves of Melastoma malabathricum L was identified. The GC-MS test results revealed that 21 and 29 peaks of separation occurred in the n-hexane and chloroform fractions. The highest peak values are hexadecanoic acid Me ester (a fatty acid group also known as palmitic acid) (100%) in the n-hexane and chloroform fractions. The highest chem. content in n-hexane and chloroform fractions was obtained at 20 min. The thin-layer chromatog. (TLC) results indicated that the n-hexane and chloroform fractions contained steroid and terpenoid compounds The antioxidant capacity test using DPPH showed that the n-hexane and chloroform fractions of ethanol extract of the leaves of Melastoma malabathricum L had IC50 values of 49.2±7.9 g/mL and 11.3±3.65 g/mL, resp. Using FRAP, the IC50 values of the n-hexane and chloroform fractions were identified as 365.2±133.6 g/mL and 80.8±8.9 g/mL, resp., categorizing them as strong and weak antioxidants. SPF testing produced SPF values for the n-hexane and chloroform fractions of ethanol extract of Melastoma malabathricum L leaves of 11.7±0.1 and 21±0.4, resp. The study results show that the antioxidant activity and the SPF values of the chloroform fraction are greater than those of the n-hexane fraction. In conclusion, the n-hexane and chloroform fractions are found to have antioxidant properties in the weak and solid categories and the ability to protect against sunlight in the vulnerable category.Ethyl tetradecanoate (cas: 124-06-1) were involved in the experimental procedure.

Ethyl tetradecanoate(cas: 124-06-1) is a labeled component from essential oil of natural hawthorn perfume. Also frequently used in cosmetics, soaps, and flavorings.HPLC of Formula: 124-06-1Ethyl myristate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of myristic acid with the hydroxy group of ethanol.

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