Tag: M.W=150-200

Morales, M. L. published the artcileVolatile metabolites produced by different flor yeast strains during wine biological ageing, Name: Ethyl nonanoate, the main research area is volatile metabolite yeast strain wine biol aging; Flor yeast; GC-MS analysis; Heatmap; Sherry wine; Volatile compound.

Sherry white wine called Fino is produced by dynamic biol. ageing under the action of flor yeasts using traditional practices aimed at ensuring uniform quality and characteristics over time. These kinds of yeasts provide typical sensory properties to Fino wines. Although there are studies of the volatile composition of these wines submitted to biol. ageing in wood barrels, there is a lack of knowledge on the particular volatile profile produced by different flor yeast strains from Sherry zone wineries. For this reason, the aim of this study was to analyze the volatile profiles produced by 15 pure culture flor velum yeasts, with the goal of observing their suitability for obtaining high quality Fino sherry wines. Volatile composition was determined by dual sequential stir bar sorptive extraction, followed by GC-MS anal. All yeast strains studied produced the increase of most acetals, highlighting acetaldehyde diethylacetal which was the compound that most increased. Among terpenes, nerolidol and farnesol underwent remarkable increases. However, results showed that in a month of biol. ageing, significant differences were observed among the volatile metabolites produced by flor yeast strains studied. Only some of them stood out for their high production of volatile compounds characteristic of Sherry Fino wines, which are good candidates for producing starter cultures.

Food Research International published new progress about Metabolites. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Name: Ethyl nonanoate.

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

Morales, M. L. published the artcileVolatile metabolites produced by different flor yeast strains during wine biological ageing, Formula: C9H10O2, the main research area is volatile metabolite yeast strain wine biol aging; Flor yeast; GC-MS analysis; Heatmap; Sherry wine; Volatile compound.

Sherry white wine called Fino is produced by dynamic biol. ageing under the action of flor yeasts using traditional practices aimed at ensuring uniform quality and characteristics over time. These kinds of yeasts provide typical sensory properties to Fino wines. Although there are studies of the volatile composition of these wines submitted to biol. ageing in wood barrels, there is a lack of knowledge on the particular volatile profile produced by different flor yeast strains from Sherry zone wineries. For this reason, the aim of this study was to analyze the volatile profiles produced by 15 pure culture flor velum yeasts, with the goal of observing their suitability for obtaining high quality Fino sherry wines. Volatile composition was determined by dual sequential stir bar sorptive extraction, followed by GC-MS anal. All yeast strains studied produced the increase of most acetals, highlighting acetaldehyde diethylacetal which was the compound that most increased. Among terpenes, nerolidol and farnesol underwent remarkable increases. However, results showed that in a month of biol. ageing, significant differences were observed among the volatile metabolites produced by flor yeast strains studied. Only some of them stood out for their high production of volatile compounds characteristic of Sherry Fino wines, which are good candidates for producing starter cultures.

Food Research International published new progress about Metabolites. 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

Lei, Lyu published the artcileBio-modified rubberized asphalt binder: A clean, sustainable approach to recycle rubber into construction, Application of Methyl octanoate, the main research area is recycle rubber biomodified rubberized asphalt binder.

This paper introduces a hybrid utilization of scrap tires and bio-oil made from biomass waste to create bio-modified rubberized asphalt for use in roadway construction. This in turn promotes clean and sustainable manufacturing while enhancing resource conservation and durability of pavements. The durability of pavements is impacted by the resistance of their asphalt binder to moisture damage and aging. This study examines the moisture resistance of bio-modified rubberized asphalt when exposed to thermal aging and UV aging. Study results show that thermal aging significantly weakens the cohesive properties of rubberized asphalt binder, while UV aging reduces its adhesive properties when exposed to water. Bio-modification of rubberized asphalt binder was found to be effective to improve resistance to cohesive damage by three times based on the rheol. test, and resistance to adhesive damage by 70% as measured by the moisture-induced shear-thinning index. The observed improvement is attributed to the bio-oil’s role as a sacrificial agent, delaying the reaction of free radicals and asphalt. Also, computational modeling shows that bio-oil mols. supersede asphalt mols. in adsorption to stones aggregates creating a stable bridge between stone and asphalt. The outcome of this study promotes clean and sustainable manufacturing while turning two waste streams (rubber and biomass waste) into a product (bio-modified rubber) in support of resource conservation and sustainability.

Journal of Cleaner Production published new progress about Absorption. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

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

Zhang, Tong published the artcileRational design of lycopene emulsion-based nanofood for Lactobacillus plantarum to enhance the growth and flavor production, HPLC of Formula: 106-32-1, the main research area is Lactobacillus lycopene emulsion nanofood growth flavor.

Lactobacillus plantarum (L. plantarum) is an important probiotic with numerous pos. effects on human health and food processing. Although many studies have focused on improving the growth and activities of probiotics with water-soluble additives, the bioavailability and functional benefits of fat-soluble active substances (FSAS) to probiotics have been neglected their poor water-solubility, which impedes absorption by probiotics. To explore the application of FSAS to L. plantarum, in this work, the emulsion-based nanofood (EBN) was designed to enable adsorption and improve the bioavailability of FSAS to L. plantarum. Properties (including particle size, zeta potential, microstructure, encapsulation rate and storage stability) of the EBN consisting of lycopene-casein-soybean soluble polysaccharide complexes were assayed, and the functions of nanofood in the growing environment of L. plantarum (pH and fluid nutrient medium stability) was explored. The results showed that EBN possessed good properties and stability for the culture of L. plantarum. Compared to resp. control groups, groups containing lycopene EBN not only showed an obvious promotion effect on L. plantarum growth in plate count, but also, at MRS culture medium, greatly enhanced the contents of acids, aldehydes, and other volatile compounds, and increased the total numbers and contents of volatile components by L. plantarum. This study demonstrated that this nanofood is an effective way to regulate the relationship of microorganisms and FSAS.

Food Hydrocolloids published new progress about Absorption. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, HPLC of Formula: 106-32-1.

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