Tag: 200-300

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:
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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

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

Li, Min;Zhang, Pan;Chen, Changle published 《Light-Controlled Switchable Ring Opening Polymerization》 in 2019. The article was appeared in 《Macromolecules (Washington, DC, United States)》. They have made some progress in their research.Reference of Oxacyclohexadecan-2-one The article mentions the following:

Salicylaldimine Zn(II) complexes bearing azobenzene moieties were prepared and characterized. Isomerization between the trans and cis forms of these complexes was achieved by exposure to light; both isomers were active in ring-opening polymerizations of ε-caprolactone (CL), rac-lactide, trimethylene carbonate, β-oxetanone, δ-valerolactone, cyclopentadecanolide, and 5-methyl-5-propyl-1,3-dioxan-2-one but exhibited different kinetic profiles. A 6-fold reactivity difference was realized for the ring-opening polymerization of CL upon irradiation with light. The light-induced isomerization also led to reactivity discrimination between different monomers in copolymerization reactions. Reversible photoswitching between two catalytically active states provides a strategy for the control of polymerization processes, as well as the compositions of the polymers produced. 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.Reference 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

Product Details of 124-06-1《Combined application of high-throughput sequencing and UHPLC-Q/TOF-MS-based metabolomics in the evaluation of microorganisms and metabolites of dry-cured ham of different origins》 was published in 2021. The authors were Zhu, Yingying;Guo, Yun;Yang, Fenghong;Zhou, Changyu;Tang, Changbo;Zhou, Guanghong, and the article was included in《International Journal of Food Microbiology》. The author mentioned the following in the article:

Ham fermentation relies on environmental and indigenous microorganisms forming a rich microbiome, which is pivotal to taste and flavor formation. Previous studies have focused on the appearance of differences of microorganisms and metabolites, this study aims to establish the relationship between microorganisms and metabolites over a period of two years in the fermentation of hams from Jinghua (JH2), Xuanwei (XW2), Rugao (RG2), Iberian (IB2) and Parma (PA2). We profiled bacterial communities by sequencing the V3-V4 region of the 16S rRNA genes and metabolites were analyzed using LC-Q-TOF-MS. LefSe anal. showed that different biomarkers in five ham groups. OPLS anal. showed that most differential metabolites are amino acids and were associated with four metabolic pathways. Correlation anal. implies a firm pos. relationship between microorganisms and metabolites. This study provides novel insights into the taste and flavor quality of dry-cured hams of different origins due to fermentation All sequence data have been deposited in the NCBI Sequence Read Archive under accession code PRJNA728825. 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.Product Details 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

Category: esters-buliding-blocks《Electrochemical Tandem Olefination and Hydrogenation Reaction with Ammonia》 was published in 2021. The authors were Zhang, Xiaofeng;Jiang, Runze;Cheng, Xu, and the article was included in《Journal of Organic Chemistry》. The author mentioned the following in the article:

An electrochem. Horner-Wadsworth-Emmons/hydrogenation tandem reaction was achieved using ammonia as electron and proton donors. The reaction could give two-carbon-elongated ester and nitrile from aldehyde or ketones directly. This reaction could proceed with a catalytic amount of base or even without a base. The ammonia provides both the electron and proton for this tandem reaction and enables the catalyst-free hydrogenation of an α,β-unsaturated HWE intermediate. More than 40 examples were reported, and functional groups, including heterocycles and hydroxyl, were tolerated.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.Category: esters-buliding-blocksEthyl 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

Multerer, Marie-Theres;Wendler, Martina;Ruther, Joachim published 《The biological significance of lipogenesis in Nasonia vitripennis》 in 2022. The article was appeared in 《Proceedings of the Royal Society B: Biological Sciences》. They have made some progress in their research.Related Products of 112-62-9 The article mentions the following:

Parasitic wasps have long been thought to be unable to synthesize fatty acids de novo, but recent 13C-labeling studies have challenged this view. It remained unclear, however, whether the reported biosynthesis rates are of biol. relevance. Here, we show in Nasonia vitripennis that ageing females with partly depleted lipid reserves produce biol. relevant amounts of fatty acids de novo. Females with varying oviposition history (0-48 h) prior to feeding 20% 13C-labeled glucose solution showed 13C-incorporation rates of (mean ± SEM) 30 ± 2%, 50 ±; 2%, 49 ±; 3% and 21 ± 2% in palmitic, stearic, oleic and linoleic acid, resp. The absolute amounts of fatty acids synthesized de novo across treatments corresponded to 28 ± 3 egg lipid equivalent Females incorporated de novo synthesized fatty acids into their eggs, and glucose-fed females laid more eggs than water-fed control females. The number of eggs laid prior to glucose feeding did not correlate with the degree of lipogenesis, but the amounts of de novo synthesized fatty acids correlated with constitutive (not synthesized de novo) fatty acids. Hence, glucose feeding has a twofold effect on the fatty acid status of N. vitripennis females by decelerating the catabolism of existing fat reserves and partially replenishing ebbing fat reserves by lipogenesis. The experimental procedure involved many compounds, such as Methyl oleate (cas: 112-62-9) .

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.Related Products of 112-62-9 It is also used in biochemical research as a chromatographic reference standard.

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

Name: Diethyl cyclobutane-1,1-dicarboxylate《Preparation of hydantoins containing a cycloalkyl substituent》 was published in 1952. The authors were Henze, Henry R.;Gayler, Cecil Winston, and the article was included in《Journal of the American Chemical Society》. The author mentioned the following in the article:

(BrCH₂)₂CH₂ was converted in 56% yield to Br(CH₂)₃CN, b₅ 75°, b₇₅₄ 208°, n_D²⁵ 1.4752, d₄²⁵ 1.4810, and this further in 77% yield to CH₂.CH₂.CHCN (I), b₂₀ 35-9°, b₇₅₅ 133-5°, n_D²⁵ 1.4208, d₄²⁵ 0.9131. PhMgBr (from 32 g. PhBr) in Et₂O and 11 g. I yielded 15.7 g. (78.5%) CH₂.CH₂.CHCOPh (II), b₂₀ 125°, n_D²⁰ 1.5525, d₄²⁵ 1.1456. Similarly was prepared CH₂.CH₂.CHCO(CH₂)₂CHMe₂ (III), 68%, b₄ 69-70°, n_D²⁰ 1.4395, d₄²⁰ 0.8790; 2,4-dinitrophenylhydrazone, m. 95°. CH₂.(CH₂)₂.C(CO₂Et)₂, b₁₀ 106-7°, n_D²⁰ 1.4335, d₄²⁰ 1.0350, was prepared in 44% yield from (BrCH₂)₂CH₂, CH₂(CO₂Et)₂, and NaOEt, hydrolyzed with alc. KOH, and the dicarboxylic acid decarboxylated at 210° to give 68% CH₂.(CH₂)₂.CHCO₂H (IV), b₈ 88-90° b₇₅₄ 190°, n_D²⁰ 1.4400, d₄²⁰ 1.0470. IV treated with SOCl₂ yielded 85% CH₂.(CH₂)₂. CHCOCl (V), b₇₅₀ 137°. V gave with C₆H₆ and AlCl₃ 35-55% CH₂.(CH₂)₂.CHBz, (VI), b₈ 122-5°, b₇₅₀ 260-2°, n_D²⁰ 1.5415, d₄²⁰ 1.0467. AcNH₂ (100 g.), 0.14-0.3 mol. KCN in its own weight of H₂O, 0.1-0.2 mol. II, III, or VI, and 0.3-0.6 mol. (NH₄)₂CO.₃ heated 20 hrs. in a glass-lined steel bomb at 110-25° and the mixture cooled, diluted with 100-200 cc. H₂O, and acidified yielded the following 5,5-disubstituted hydantoins (substituents given): 56% CH₂.CH₂.CH, Ph, m. 211.5° (corrected); 15% CH₂.CH₂.CH, iso-Am, m. 176-7° (corrected); and 85% CH₂.(CH₂)₂.CH, Ph (VII), m. 234.5-5° (corrected), resp. Catalytic hydrogenation of VII with PtO in EtOH yielded 70% 5-cyclobutyl-5-cyclohexylhydantoin, m. 254-5° (corrected). AcNH₂ (175 g.), 27 g. 2-methylcyclopentyl Me ketone, 19.5 g. KCN, and 62 g. (NH₄)₂CO₃ heated 10 hrs. in a closed container at 110° and the product fractionally crystallized from Me₂CO yielded 9 g. (17%) trans-5-(2-methylcyclopentyl)-5-methylhydantoin (VIII), white plates, m. 228-30° (corrected), and 34% cis-isomer (IX) of VIII, white needles, m. 176-7° (corrected). In a similar run carried out in 50% EtOH at 65°, the yields of VIII and IX were 41% each. 2,3-dimethylcyclopentyl Me ketone was converted similarly in 50% EtOH medium to 62% 5-(2,3-dimethylcyclopentyl)-5-methylhydantoin, which was separated by fractionated crystallization into 2 isomers, m. 145-50° and 220-5°. And Diethyl cyclobutane-1,1-dicarboxylate (cas: 3779-29-1) was used in the research process.

Diethyl cyclobutane-1,1-dicarboxylate (cas:3779-29-1
) is a solid catalyst that can be used in the synthesis of alkylating agents. It is used in the manufacture of cyclopropyl ketones and has been shown to exhibit anticancer properties.

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

Demiray, Hatice;Estep, Alden S.;Tabanca, Nurhayat;Becnel, James J.;Demirci, Betul published 《Chemical constituents from Rheum ribes shoots and its insecticidal activity against Aedes aegypti》. The research results were published in《Revista Brasileira de Farmacognosia》 in 2022.Application In Synthesis of Methyl oleate The article conveys some information:

A phytochem. investigation of hexane extract of Rheum ribes L., Polygonaceae, shoots was analyzed by gas chromatog. with flame ionization dection and mass specrometry and revealed seven components including Me hexadecanoate (Me palmitate) (2.4%), (Z)-9-Me octadecenoate (Me oleate) (2.9%), (Z,Z,Z)-9,12,15-Me octadecatrienoate (Me linolenate) (3.5%), 1-octadecanol (4.3%), (Z,Z)-9,12-Me octadecadienoate (Me linoleate) (5.7%), heptacosane (13.5%), and hexadecanoic acid (palmitic acid) (67.7%). The hexane extract was bioassayed for larvicidal and adult topical activity against an insecticide susceptible strain of Aedes aegypti, the yellow fever mosquito. Results demonstrated a 90% mortality against adults at 5μg/mosquito and first instar larvae at 1μg/μl. The major compound hexadecanoic acid showed 20% mortality at 6.25 ppm against adults whereas the compound provided 100% mortality at the highest screening dose of 1000 ppm against 1st instar larvae. The mosquitocidal activity of the analyzed plant material may be related to a specific combination of compounds present in the hexane extract Graphical abstract And Methyl oleate (cas: 112-62-9) was used in the research process.

Methyl oleate(cas: 112-62-9) is an intermediate for detergents, emulsifiers, wetting agents, stabilizers, textile treatments, plasticizers for duplicating inks, rubbers, waxes etc.Application In Synthesis of Methyl oleate It is also used in biochemical research as a chromatographic reference standard.

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

HPLC of Formula: 124-06-1《Effect of purification methods on functional properties of sardine oil ethyl esters》 was published in 2022. The authors were Zhang, Mengna;Chen, Zhigang;Shen, Qing, and the article was included in《Journal of Food Processing and Preservation》. The author mentioned the following in the article:

In this study, four methods including urea complexation (UC), mol. distillation (MD), low-temperature crystallization (LTC), and Ag+ bonded to mercaptopropyl silica gel column chromatog. (AgMSG-CC) were adopted to purify eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) from sardine oil Et esters (SOEEs). These methods were systematically compared in terms of physicochem. properties, fatty acid (FA) compositions, and volatile flavor compounds to evaluate the performance and find the superior among them. The AgMSG-CC method was superior in enhancing iodine value (IV) and reducing peroxide value (PV), enriching EPA and DHA from 31.63% to 92.19% and removing undesirable volatiles. Its mild exptl. conditions could avoid the degradation and geometrical isomerization of lipids, and the packed AgMSG column could be reused. Multivariate data anal. was applied to provide an integrated and holistic view of correlation coefficients between the samples and FA species. The results supported the critical role of AgMSG-CC method in purifying EPA and DHA. Finally, this method was validated to be accurate and sensitive in the purification of EPA and DHA from SOEEs. Practical applications : High quality of fish oil is related to its high content of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) and friendly aroma. However, enrichment methods about purifying fish oil affect the percentages of EPA and DHA, physicochem. indexes and the volatile flavor. In this study, the results demonstrated that Ag+ bonded to mercaptopropyl silica gel column chromatog. was the most effective to purify EPA and DHA as well as remove the undesirable odor volatiles. To complete the study, the researchers used Ethyl tetradecanoate (cas: 124-06-1) .

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