Tag: M.W=150-200

Yilmaz-Oral, Didem published the artcileThe beneficial effect of clove essential oil and its major component, eugenol, on erectile function in diabetic rats, HPLC of Formula: 140-11-4, the main research area is clove essential oil fertility agent erectile dysfunction; Syzygium aromaticum ; clove; corpus cavernosum; diabetes; erectile dysfunction; eugenol.

Diabetic men are at a higher risk of erectile dysfunction (ED). A tropical plant, clove (Syn. Eugenia caryophyllata, Caryophyllus aromaticus L., Syzygium aromaticum (L.) Merr. & L.M. Perry) from the Myrtaceae family has displayed aphrodisiac activity. The present research aimed to investigate the impacts of clove essential oil (CEO) and the ingredient of CEO, eugenol (E) on ED in diabetic rats. We divided Sprague-Dawley rats into control and diabetic groups. Erectile function was evaluated before and after CEO and E intracavernosal injection. CEO- and E-induced relaxation responses were investigated in isolated corpus cavernosum (CC) using various inhibitors. The intracavernous administration of CEO and E restored erectile responses in diabetic rats. CEO and E induced remarkable relaxation in all groups. CEO- and E-induced relaxation responses were partially inhibited after pre-contraction with KCl. Tetraethylammonium and glibenclamide inhibited the relaxation response to CEO. Glibenclamide inhibited maximum relaxation to E. The inhibitors of nitric oxide synthase (NOS), soluble guanylyl cyclase and nifedipine did not change CEO- and E-induced relaxation responses. The current results suggest that CEO and the major compound of the essential oil, E improved diabetes-induced ED in rats, and CEO caused CC relaxation via K+ channels independently NO signalling pathway.

Andrologia published new progress about Body weight. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, HPLC of Formula: 140-11-4.

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

Jarukas, Laurynas published the artcileOptimization and validation of the GC/FID method for the quantification of fatty acids in bee products, Product Details of C11H22O2, the main research area is fatty acid bee product GC flame ionization detection quantification.

To the best of our knowledge, so far, no study has been conducted about the comparison of the total fatty acid concentration in the four bee products (honey, bee pollen, bee bread, and propolis) collected from Lithuania. Therefore, we aimed to optimize the derivatization parameters and to investigate a simple and sensitive gas chromatog.-flame ionization detection (GC-FID) method to determine fatty acids. The optimal derivatization parameters were used to analyze fatty acids in the bee products. Regarding sample preparation, three derivatization parameters were compared (temperature and extraction time with BF3/MeOH reagent) in order to obtain a high amount of the total fatty acids of interest from the fatty acid Me ester (FAME) standard The results showed that the highest total yield of fatty acids was conducted by using the conventional heating process at 70°C for 90 min. Under optimal conditions, there was obtained excellent linearity for fatty acids with determination coefficients of r2 > 0.9998. The LODs and LOQs ranged from 0.21 to 0.54μg/mL and 0.63 to 1.63μg/mL, resp. This method has been successfully applied to the qual. anal. of fatty acids in bee products. The above findings might provide a scientific basis for evaluating the nutritional values of bee products.

Applied Sciences published new progress about Bread (bee). 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

Jarukas, Laurynas published the artcileOptimization and validation of the GC/FID method for the quantification of fatty acids in bee products, Related Products of esters-buliding-blocks, the main research area is fatty acid bee product GC flame ionization detection quantification.

To the best of our knowledge, so far, no study has been conducted about the comparison of the total fatty acid concentration in the four bee products (honey, bee pollen, bee bread, and propolis) collected from Lithuania. Therefore, we aimed to optimize the derivatization parameters and to investigate a simple and sensitive gas chromatog.-flame ionization detection (GC-FID) method to determine fatty acids. The optimal derivatization parameters were used to analyze fatty acids in the bee products. Regarding sample preparation, three derivatization parameters were compared (temperature and extraction time with BF3/MeOH reagent) in order to obtain a high amount of the total fatty acids of interest from the fatty acid Me ester (FAME) standard The results showed that the highest total yield of fatty acids was conducted by using the conventional heating process at 70°C for 90 min. Under optimal conditions, there was obtained excellent linearity for fatty acids with determination coefficients of r2 > 0.9998. The LODs and LOQs ranged from 0.21 to 0.54μg/mL and 0.63 to 1.63μg/mL, resp. This method has been successfully applied to the qual. anal. of fatty acids in bee products. The above findings might provide a scientific basis for evaluating the nutritional values of bee products.

Applied Sciences published new progress about Bread (bee). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Related Products of esters-buliding-blocks.

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

Mezo, Emerencia published the artcileThe role of ionic liquid interaction in the separation of fatty acid methyl esters-polyunsaturated geometric isomers in GC-MS, Recommanded Product: Methyl decanoate, the main research area is fatty acid methyl ester ionic liquid chromatog column interaction.

Knowledge of the type and level of saturated and unsaturated fatty acids in food and clin. matrixes is of practical importance, but the wide variety of fatty acids makes analyses very complex. The discrimination of the geometric isomers of fatty acid needs proper and effective separation conditions. The efficiency of three different stationary phases was evaluated by GC-MS methods in the separation of fatty acids in their Me ester forms. Significant differences were observed in the efficiencies of polysiloxane-based (non-polar HP-5MS and medium/high polarity DB-225MS) and ionic liquid-based (SLB-IL111) columns. Baseline separation of the geometric isomers of linoleic acid Me ester was obtained by the extremely polar SLB-IL111 column, showing a preference over the other two columns. The optimization of the exptl. conditions (response linearity, limit of detection, limit of quantification, system suitability, intraday and interday repeatability and accuracy) showed the separation power of the ionic liquid interaction in the analyses by using short (25-30 m long) columns. By deducting the general principles of the interaction, predictions can be made for the separation of other isomers. The results facilitate the precise identification of various types of fatty acids in real samples for nutritional information.

Separations published new progress about Calibration. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Recommanded Product: Methyl decanoate.

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

Mezo, Emerencia published the artcileThe role of ionic liquid interaction in the separation of fatty acid methyl esters-polyunsaturated geometric isomers in GC-MS, Recommanded Product: Methyl octanoate, the main research area is fatty acid methyl ester ionic liquid chromatog column interaction.

Knowledge of the type and level of saturated and unsaturated fatty acids in food and clin. matrixes is of practical importance, but the wide variety of fatty acids makes analyses very complex. The discrimination of the geometric isomers of fatty acid needs proper and effective separation conditions. The efficiency of three different stationary phases was evaluated by GC-MS methods in the separation of fatty acids in their Me ester forms. Significant differences were observed in the efficiencies of polysiloxane-based (non-polar HP-5MS and medium/high polarity DB-225MS) and ionic liquid-based (SLB-IL111) columns. Baseline separation of the geometric isomers of linoleic acid Me ester was obtained by the extremely polar SLB-IL111 column, showing a preference over the other two columns. The optimization of the exptl. conditions (response linearity, limit of detection, limit of quantification, system suitability, intraday and interday repeatability and accuracy) showed the separation power of the ionic liquid interaction in the analyses by using short (25-30 m long) columns. By deducting the general principles of the interaction, predictions can be made for the separation of other isomers. The results facilitate the precise identification of various types of fatty acids in real samples for nutritional information.

Separations published new progress about Calibration. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Recommanded Product: Methyl octanoate.

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

Ravichandran, Janani published the artcileAn atlas of fragrance chemicals in children’s products, Related Products of esters-buliding-blocks, the main research area is atlas fragrance chem product children potential health concern safety; Chemical regulation; Children’s products; FCCP database; Fragrance chemicals; Network analysis; Skin sensitizing chemicals.

Exposure to environmental chems. during early childhood is a potential health concern. At a tender age, children are exposed to fragrance chems. used in toys and child care products. Although there are few initiatives in Europe and United States towards monitoring and regulation of fragrance chems. in children’s products, such efforts are still lacking elsewhere. Besides there was no systematic effort to create a database compiling the surrounding knowledge on fragrance chems. used in children’s products from published literature. Here, we built a database of Fragrance Chems. in Children’s Products (FCCP) that compiles information on 153 fragrance chems. from published literature. The fragrance chems. in FCCP were classified based on their chem. structure, children’s product source, chem. origin and odor profile. Moreover, we have also compiled the physicochem. properties, predicted Absorption, Distribution, Metabolism, Excretion and Toxicity (ADMET) properties, mol. descriptors and human target genes for the fragrance chems. in FCCP. After building FCCP, we performed multiple analyses of the associated fragrance chem. space. Firstly, we assessed the regulatory status of the fragrance chems. in FCCP through a comparative anal. with 21 chem. lists reflecting current guidelines or regulations. We find that several fragrance chems. in children’s products are potential carcinogens, endocrine disruptors, neurotoxicants, phytotoxins and skin sensitizers. Secondly, we performed a similarity network based anal. of the fragrance chems. in children’s products to reveal the high structural diversity of the associated chem. space. Lastly, we identified skin sensitizing fragrance chems. in children’s products using ToxCast assays. In a nutshell, we present a comprehensive resource and detailed anal. of fragrance chems. in children’s products highlighting the need for their better risk assessment and regulation to deliver safer products for children. FCCP is accessible at: https://cb.imsc.res.in/fccp.

Science of the Total Environment published new progress about Carcinogens. 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

Tufariello, Maria published the artcileEfficacy of yeast starters to drive and improve Picual, Manzanilla and Kalamata table olive fermentation, Category: esters-buliding-blocks, the main research area is olive fermentation yeast; fermentation; quality; safety; starter; table olives; yeast.

BACKGROUND : Table olive fermentation is an unpredictable process and frequently performed using traditional practices often inadequate to obtain products with acceptable quality and safety standards In the present study, the efficacy of selected yeast strains as starters to drive fermentations of green and black table olives by the Greek method was investigated. Pilot-scale production by spontaneous fermentation as a control, olives started with previously selected Saccharomyces cerevisiae strains and fermentation driven by com. S. cerevisiae baker’s yeast strain were carried out for each of Manzanilla, Picual and Kalamata table olive cultivars. RESULTS : Time of fermentation was significantly shortened to 40 days to complete the transformation process for all three tested cultivars. Inoculated table olives were enhanced in their organoleptic and nutritional properties in comparison with corresponding samples obtained by spontaneous fermentation The use of starters was also able to improve safety traits of table olives in terms of biogenic amine reduction as well as absence of undesired microorganisms at the end of the process. CONCLUSIONS : Autochthonous, but also non-autochthonous, yeasts can be used to start and control table olive fermentations and can significantly improve quality and safety aspects of table olives produced by many smallholder farmers. © 2018 Society of Chem. Industry.

Journal of the Science of Food and Agriculture published new progress about Clostridium. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Category: esters-buliding-blocks.

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

Goi, Yohsuke published the artcileDual functions of TEMPO-oxidized cellulose nanofibers in oil-in-water emulsions: Pickering emulsifier and unique dispersion stabilizer, Formula: C11H22O2, the main research area is TEMPO oxidized cellulose nanofiber oil water emulsion Pickering emulsifier; dispersion stabilizer.

The emulsifying and dispersing mechanisms of oil-in-water emulsions stabilized by 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO)-oxidized cellulose nanofibers (CNFs) have been investigated. The emulsifying mechanism was studied by changing the oil/water interfacial tension from 8.5 to 53.3 mN/m using various types of oils. The results showed that the higher the oil/water interfacial tension, the greater is the amount of CNFs adsorbed at the oil/water interface, making the CNF-adsorbed oil-in-water emulsions thermodynamically more stable. Moreover, the amount of CNFs adsorbed on the surfaces of the oil droplets increased with increasing interfacial area. The dispersion stability of the oil droplets was dominated by the CNF concentration in the water phase. Above the critical concentration (0.15% weight/weight), the CNFs formed network structures in the water phase, and the emulsion was effectively stabilized against creaming. Emulsion formation and the CNF network structures in the emulsion were visualized by cryo-SEM.

Langmuir published new progress about Coalescence. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Formula: C11H22O2.

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

Lebanov, Leo published the artcileComprehensive characterization of ylang-ylang essential oils according to distillation time, origin, and chemical composition using a multivariate approach applied to average mass spectra and segmented average mass spectral data, SDS of cas: 140-11-4, the main research area is ylang essential oil composition mass spectra data multivariate; Average mass spectrum; Gas chromatography mass spectrometry; Multivariate statistical analysis; Quality control; Ylang-ylang essential oil.

Analyses of the complex essential oil samples using gas chromatog. hyphenated with mass spectrometry (GC-MS) generate large three-way data arrays. Processing such large data sets and extracting meaningful information in the metabolic studies of natural products requires application of multivariate statistical techniques (MSTs). From the GC-MS raw data several different input data sets for the MSTs can be created, including total chromatogram average mass spectra (TCAMS), segmented average mass spectra (SAMS) and chem. composition Herein, we compared the performance of MSTs on average mass spectrum based data sets, TCAMS and SAMS, against chem. composition and attenuated total reflectance – Fourier transformation IR (ATR-FTIR) spectroscopy in the evaluation of quality of ylang-ylang essential oils, based on their grade, geog. origin and chem. composition, using principal component anal. (PCA), partial least squares regression (PLS) and discriminatory anal. (PLS-DA). PCA based on TCAMS, SAMS and chem. composition showed clear trends amongst the samples based on increase in grade (distillation time). PLS-DA applied to TCAMS, SAMS and ATR-FTIR discriminated between all geog. origins. Predicted relative abundances of the 18 most important compounds, using PLS regression models on TCAMS, SAMS and ATR-FTIR, were successfully applied to ylang-ylang essential oil quality assessment based on comparison with the ISO 3063:2004 standard, where the SAMS data set showed superior performance, compared to other data sets.

Journal of Chromatography A published new progress about Composition. 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

Padwa, Albert published the artcileEfficient Construction of the Oxatricyclo[6.3.1.00,0]dodecane Core of Komaroviquinone Using a Cyclization/Cycloaddition Cascade of a Rhodium Carbenoid Intermediate, Formula: C9H16O2, the main research area is oxatricyclododecane core komaroviquinone preparation cyclization cycloaddition cascade rhodium carbenoid.

The rhodium(II)-catalyzed cyclization/cycloaddition cascade of a o-carbomethoxyaryl diazo dione is described as a potential route to the oxatricyclo[6.3.1.00,0]dodecane substructure I (R = H, Me) of the icetexane diterpene komaroviquinone. The initially formed carbonyl ylide dipole prefers to cyclize to an epoxide at 25 °C but can be induced to undergo cycloaddition across the tethered π-bond at higher temperatures

Organic Letters published new progress about Cyclization. 86549-27-1 belongs to class esters-buliding-blocks, name is Ethyl 2,2-dimethylpent-4-enoate, and the molecular formula is C9H16O2, Formula: C9H16O2.

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