Category: alcohols-buliding-blocks

Zhang, Lin published the artcileDynamics of microbial communities, ethyl carbamate, biogenic amines, and major metabolites during fermentation of soy sauce, Formula: C4H10OS, the main research area is pyroglutamic lactic acid ethyl carbamate soy sauce fermentation.

In this study, the dynamics of the microbial communities and metabolites for soy sauce were investigated. The succession of microbiota was divided into three phases in process. Dynamics of physicochem. properties coincided with the succession of dominant genera in the first 3 mo, hereafter changed slightly. The contents of L-malic acid, pyroglutamic acid, and lactic acid were increased by 11.79, 11.39, and 3.19 times (p < 0.05), resp., compared with that in the initial moromi. The contents of volatiles were changed in the later phase significantly, and dominant constituents were pos. correlated with the dominant genera. The Et carbamate (EC) and seven kinds of biogenic amines (BAs) reached the maximum in the third month, then their contents decreased. The EC forming involved in two phases, the metabolic pathway was partly shared with that of putrescine biosynthesis. These results laid an important foundation in reducing the endogenous hazards by bioturbating. Food Science and Technology Research published new progress about Acidity. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Formula: C4H10OS.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bebon, Rick published the artcileElectrostatic pair-interaction of nearby metal or metal-coated colloids at fluid interfaces, Application of n-Octanol, the main research area is electrostatic pair potential colloid.

In this paper, we theor. study the electrostatic interaction between a pair of identical colloids with constant surface potentials sitting in close vicinity next to each other at the fluid interface. By employing a simplified yet reasonable model system, the problem is solved within the framework of classical d. functional theory and linearized as well as nonlinear Poisson-Boltzmann (PB) theory. Apart from providing a sound theor. framework generally applicable to any such problem, our novel findings, all of which contradict common beliefs, include the following: first, quant. and qual. differences between the interactions obtained within the linear and the nonlinear PB theories; second, the importance of the electrostatic interaction between the omnipresent three-phase contact lines in interfacial systems; and, third, the occurrence of an attractive electrostatic interaction between a pair of identical metal colloids. The unusual attraction we report largely stems from an attractive line interaction, which although scales linearly with the size of the particle can compete with the surface interactions and can be strong enough to alter the nature of the total electrostatic interaction. Our results should find applications in metal or metal-coated particle-stabilized emulsions where densely packed particle arrays are not only frequently observed but also sometimes required. (c) 2020 American Institute of Physics.

Journal of Chemical Physics published new progress about Colloids. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cassidy, Kyle J. published the artcileComposite Particles From Pickering-Stabilized Radical Mediated Thiol-Ene Suspension Polymerizations, Name: Pentaerythritol tetra(3-mercaptopropionate), the main research area is polythioether silica composite particle radical thiol ene suspension polymerization; pickering stabilization morphol thermal property.

Pickering stabilization is a facile method to create composite colloidal particles. Inorganic colloidal SiO2 nanoparticles are often used as the stabilizer for particles instead of the more common amphiphilic surfactants. Here the use of this approach in radical-mediated thiol-ene suspension polymerizations using monomers 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (TTT) and pentaerythritol tetrakis (3-mercaptopropionate) (PETMP) is described. The resulting micron-sized crosslinked poly(thioether) colloidal particles are coated with 80 nm silica nanoparticles. The addition of a small amount of various costabilizers is examined (hexadecane, cetyl alc. and toluene), and while all yielded particles, cetyl alc. provide more consistent results. SEM and thermal anal. of the composite particles demonstrate morphologies that are consistent with a raspberry-like structure. No significant changes to the glass transition temperature are observed, which is consistent with the silica nanoparticles being located at the surface of the polymer particles.

Macromolecular Reaction Engineering published new progress about Colloids. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Name: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sharapova, Angelica published the artcileSolubility and vapor pressure data of bioactive 6-(acetylamino)-N-(5-ethyl-1,3,4-thiadiazol-2-yl) hexanamide, Application of n-Octanol, the main research area is bioactive compound solubility elec conductivity.

This paper presents new exptl. data on some key physicochem. properties of original bioactive 6-(acetylamino)-N-(5-ethyl-1,3,4-thiadiazol-2-yl) hexanamide (AETH). Thermal anal. of the compound under study has been carried out using differential scanning calorimetry and thermogravimetric techniques. AETH solubility data in five pharmaceutically relevant solvents in the temperature range from 288.15 to 318.15 K have been obtained by the classic saturation shake-flask method. The bioactive compound has poor solubility in hexane and buffer solutions, while it is slightly soluble in selected alcs. The exptl. solubility results have been correlated by means of modified Apelblat and van’t Hoff equations. The selected thermodn. models produced acceptable results. The Hansen solubility parameters and their components for AETH and solvents have been evaluated by using the van Krevelen-Hoftyzer at. group contribution method. The ideal solubility and the solution activity coefficient at equilibrium in the selected solvents have been quantified based on exptl. values of melting enthalpy and temperature All the investigated solutions exhibit a pos. deviation from ideality with the maximal solubility in alcs. The equilibrium vapor pressure of the compound studied has been determined as a function of temperature in the range of 433.15-454.15 K by the transpiration method. The standard thermodn. parameters of AETH sublimation have been calculated

Journal of Chemical Thermodynamics published new progress about Crystals. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Perez, Hugo A. published the artcileEffect of cholesterol on the surface polarity and hydration of lipid interphases as measured by Laurdan fluorescence: New insights, Product Details of C8H18O, the main research area is cholesterol dipalmitoylphosphatidylcholine Laurdan fluorescence spectroscopy; Cholesterol; Laurdan fluorescence; Lipid membranes; Organic solvents.

Comparison of the behavior of Laurdan in gel and in the liquidcrystalline DPPC bilayers with that observedin chloroform and OctOH allow concluding that changes in the membrane lipid order cannot be ascribed to changes in viscosity of the local environment. Cholesterol acts as a spacer below the transition temperatureof DPPC, promoting a disorder state in the acyl chain region. No evidence of water entrance has been detected with Laurdan up to 30% Cholesterol in DPPC in this condition. In contrast, Chol displaces to longer values the wavelength of Laurdan in membranes in the liquidcrystallinestate. This decrease in polarity occurs above 5% Chol and is directly related to the water extrusion produced by Chol. This effect is similar to that occurring in liquid crystalline membranes subjected to hypertonic stress. The behavior is comparable to that of Laurdan in OctOH at different water ratios below 5% Chol/DPPC. At higher ratios, other changes are evident.

Colloids and Surfaces, B: Biointerfaces published new progress about Crystals. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Product Details of C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Kahr, Bart published the artcileTailor-Made Auxiliaries for Polar Growth from Melts, Computed Properties of 97-67-6, the main research area is review Tailor made auxiliary polar growth melt.

Tailor-made auxiliaries are generally less stereochem. discriminating of crystals grown from the melt than crystals grown from solution However, it is possible to make supramol. inferences using well-chosen additives in the manner taught to us by Lahav and Leiserowitz. Spherulites manifesting needle-like growth and small angle branching grow frequently from supercooled melts under high crystallization driving forces, along one principal crystallog. direction. If this direction is polar, it is important to establish its absolute sense as a basis for understanding growth at the interface between crystals and melt. This assignment, for polycrystalline ensembles, is beyond the capabilities of X-ray crystallog. Two examples of this discrimination are described with tailor-made additives, one for the β form of resorcinol and another for form I of L-malic acid. Assigning the absolute sense of a polar axis with mol. additives is a problem that resembles both the science and style of previous experiments from the Weizmann Institute.

Israel Journal of Chemistry published new progress about Crystals. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Computed Properties of 97-67-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Du, Xiaofen published the artcileAssociation of Refreshing Perception with Volatile Aroma Compounds, Organic Acids, and Soluble Solids in Freshly Consumed Cucumber Fruit, Computed Properties of 584-02-1, the main research area is cucumber fruit aroma compound organic acid soluble solid.

Refreshing is a multidimensional concept for the response to a food consumption experience, especially for drinks. The consumer has daily needs for refreshing; however, the perception of refreshing and the associated food sensory quality and mol. composition are underexplored. This study aimed to (1) use a consumer study to evaluate the refreshing perception of eight cucumber varieties, (2) identify volatile aroma and nonvolatile taste compounds in cucumber with instrumental anal., and (3) explore the potential correlation between refreshing perception and aroma- and taste-related compounds using statistical anal. The cucumber consumer study (n = 103) showed that cucumbers were perceived as refreshing in general (intensities 3.3-5.4, 0-10 line scale). The anal. of volatiles with solid-phase microextraction-gas chromatog.-mass spectrometry (SPME-GC-MS) identified 155 volatiles. Aldehydes and alcs. were the most dominant, accounting for 25.5%-77.9% and 15.0%-58.1%, resp. Soluble solids and three organic acids were quantified in the eight cucumber varieties using a refractometer and high-performance liquid chromatog. (HPLC), resp. Cucumber variety differences in these variables (volatiles, organic acids, and soluble solids) were significant (p ≤ 0.05). Compounds associated with refreshing perception were investigated using partial least-squares (PLS) regression, and refreshing perception was highly correlated with aldehydes (mainly C6 and C9 aldehydes), organic acid, and soluble solids. The findings would bring in a new potential use of cucumber, especially when the food industry is interested in developing products perceived as refreshing with natural flavorings.

ACS Food Science & Technology published new progress about Cucumber. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Computed Properties of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bredenberg, Susanne published the artcileEvaluation of a sieve classification method for characterization of low-dose interactive mixtures, Related Products of alcohols-buliding-blocks, the main research area is sodium salicylate carrier demixing sieving particle size.

This study investigated a sieve classification method for evaluating carrier materials and particle size fractions, which could be a valuable tool in the early development of pharmaceutical dosage forms containing low-dose interactive mixtures When developing new products based on interactive mixtures, it is essential to ensure that the drug particles are successfully deagglomerated and have adhered to the carrier particles. In this study, the effect on the demixing potential (DP) of low-dose interactive mixtures was assessed for various carrier particle sizes and surface textures. The model drug used was sodium salicylate and the tested carriers were lactose, mannitol, and isomalt. The results showed that the lowest DPs, i.e. the most mech. stable mixtures, were obtained with lactose. Furthermore, for interactive mixtures, small carrier particles and/or a narrow carrier particle size range are essential for obtaining a low DP and high homogeneity. Calculation of the DP provided a reliable estimate of the quality of the low-dose interactive mixtures used in this study.

Pharmaceutical Development and Technology published new progress about Demixing. 64519-82-0 belongs to class alcohols-buliding-blocks, name is (3R,4R,5R)-6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexane-1,2,3,4,5-pentaol, and the molecular formula is C12H24O11, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hadjikinova, Raina published the artcileDevelopment and validation of HPLC-RID method for determination of sugars and polyols, SDS of cas: 64519-82-0, the main research area is dessert food sugar polyol HPLC RID analysis.

The aim of the current study was to develop and validate a rapid, sensitive and accurate method for simultaneous determination of sugars (glucose, fructose, sucrose and lactose) and polyols (erythritol, mannitol, sorbitol, isomalt and xylitol) in low-calorie and no-sugar added desserts by high pressure liquid chromatog. coupled with refractive index detector (RID). The best chromatog. separation was performed on Pb2+ Shodex Sugars SP0810 operating at 80°C and mobile phase distilled water with flow rate 0.5 mL/min. Validation procedure includes for linearity, precision and accuracy of the method. The developed method offers excellent linearity in wide concentration range (0.1-5 mg/mL) for all tested carbohydrates with R2>0.997. Limit of detection (LOD) and limit of quantification (LOQ) for nine analytes were in the range of 0.01-0.17 mg/mL and 0.03-0.56 mg/mL, resp. HPLC-RID method showed very good repeatability (RSD >5 %) and reproducibility. The developed method was successfully applied for quantification of sugars and sugar alcs. in dessert foods. The results obtained from the analyzed real samples showed the possibility of the proposed method to be used for routine anal. of sugars and sugar alcs. in low-calorie, no-sugar added dessert foods and pharmaceutical formula only with one injection of the sample.

Journal of Pharmaceutical Sciences and Research published new progress about Desserts. 64519-82-0 belongs to class alcohols-buliding-blocks, name is (3R,4R,5R)-6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexane-1,2,3,4,5-pentaol, and the molecular formula is C12H24O11, SDS of cas: 64519-82-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Padmanabhan, Aparna published the artcileStructural characterization of exopolysaccharide from Streptococcus thermophilus ASCC 1275, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Streptococcus exopolysaccharide purification dialysis; exopolysaccharide; glycosyl linkage; nuclear magnetic resonance (NMR); structure.

In this study, we purified and characterized exopolysaccharide (EPS) produced by a high-EPS-producing dairy starter bacterium, Streptococcus thermophilus ASCC 1275. Crude EPS was extracted from S. thermophilus ASCC 1275 and partially purified using dialysis. Further purification and fractionation of exopolysaccharide was conducted using HPLC on a Superose 6 column (Cytiva/Global Life Sciences Solutions, Marlborough, MA). Glycosyl composition anal., linkage anal. along with 1-dimensional and 2-dimensional NMR spectroscopy were performed to deduce the structure of EPS. Three fractions (F) obtained from gel permeation chromatog. were termed F1 (2.6%), F2 (45.8%), and F3 (51.6%) with average mol. weights of approx. 511, 40, and 5 kDa, resp. Monosaccharide composition anal. revealed the dominance of glucose, galactose, and mannose in all 3 fractions. Major linkages observed in F3 were terminal galactopyranosyl (t-Gal), 3-linked glucopyranosyl (3-Glc), 3-linked galactofuranosyl (3-Galf), and 3,6-linked glucopyranosyl (3,6-Glc) and major linkages present in F2 were 4-Glc (48 mol%), followed by terminal mannopyranosyl (t-Man), 2- + 3-linked mannopyranosyl (2-Man+3-Man), and 2,6-linked mannopyranosyl (2,6-Man; total ∼28 mol%). The 1-dimensional and 2-dimensional NMR spectroscopy revealed that F2 comprised mannans linked by (1→2) linkages and F3 consisted of linear chains of α-D-glucopyranosyl (α-D-Glcp), β-D-glucopyranosyl (β-D-Glcp), and β-D-galactofuranosyl (β-D-Galf) connected by (1→3) linkages; branching was through (1→6) linkage in F3. A possible structure of EPS in F2 and F3 was proposed.

Journal of Dairy Science published new progress about Dialysis. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts