Month: April 2021

Reference of 5333-42-6, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 5333-42-6, Name is 2-octyldodecan-1-ol, SMILES is CCCCCCCCCCC(CCCCCCCC)CO, belongs to alcohols-buliding-blocks compound. In a article, author is Zhao, Guozhong, introduce new discover of the category.

Effect of Hericium erinaceus on bacterial diversity and volatile flavor changes of soy sauce

At present, the consumer demand for high-quality soy sauce is growing. Hericium erinaceus, an edible mushroom with many health benefits, was used for soy sauce fermentation. Firmicutes and Proteobacteria were identified as the main phyla, while, Bacillus and Stenotrophomonas as the predominant genera during soy sauce fermentation. H. erinaceus decreased the richness and diversity of bacteria during soy sauce fermentation due to its antimicrobial effect. Especially, Stenotrophomonas, a common opportunistic pathogen, was replaced by Bacillus during soy sauce fermentation by adding H. erinaceus. Moreover, H. erinaceus significantly promoted the esters and alcohols accumulation, and had positively influenced on a sensory constituent. However, pyrazines, ketones, and alkanes were rich in the control samples. Bacillus, Staphylococcus, and Psychrobacter showed a positive correlation to flavor formation with the addition of H. erinaceus. This study provided new insight into regulating the quality and microbial community of soy sauce by changing the raw material ingredients.

Reference of 5333-42-6, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 5333-42-6 is helpful to your research.

Reference:
Alcohol – Wikipedia,
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108-82-7, Name is 2,6-Dimethylheptan-4-ol, molecular formula is C9H20O, belongs to alcohols-buliding-blocks compound, is a common compound. In a patnet, author is Avchalumov, Yosef, once mentioned the new application about 108-82-7, HPLC of Formula: C9H20O.

Chronic ethanol exposure differentially alters neuronal function in the medial prefrontal cortex and dentate gyrus

Alterations in the function of prefrontal cortex (PFC) and hippocampus have been implicated in underlying the relapse to alcohol seeking behaviors in humans and animal models of moderate to severe alcohol use disorders (AUD). Here we used chronic intermittent ethanol vapor exposure (CIE), 21d protracted abstinence following CIE (21d AB), and re-exposure to one vapor session during protracted abstinence (re-exposure) to evaluate the effects of chronic ethanol exposure on basal synaptic function, neuronal excitability and expression of key synaptic proteins that play a role in neuronal excitability in the medial PFC (mPFC) and dentate gyms (DG). CIE consistently enhanced excitability of layer 2/3 pyramidal neurons in the mPFC and granule cell neurons in the DG. In the DG, this effect persisted during 21d AB. Re-exposure did not enhance excitability, suggesting resistance to vapor-induced effects. Analysis of action potential kinetics revealed that altered afterhyperpolarization, rise time and decay time constants are associated with the altered excitability during CIE, 21d AB and reexposure. Molecular adaptations that may underlie increases in neuronal excitability under these different conditions were identified. Quantitative polymerase chain reaction of large-conductance potassium (BK) channel subunit mRNA in PFC and DG tissue homogenates did not show altered expression patterns of BK subunits. Western blotting demonstrates enhanced phosphorylation of Ca2+/calmodulin-dependent protein kinase II (CaMKII), and reduced phosphorylation of glutamate receptor GluN2A/2B subunits. These results suggest a novel relationship between activity of CaMKII and GluN receptors in the mPFC and DG, and neuronal excitability in these brain regions in the context of moderate to severe AUD.

If you¡¯re interested in learning more about 108-82-7. The above is the message from the blog manager. HPLC of Formula: C9H20O.

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Let¡¯s face it, organic chemistry can seem difficult to learn, Quality Control of Sodium isethionate, Especially from a beginner¡¯s point of view. Like 1562-00-1, Name is Sodium isethionate, molecular formula is alcohols-buliding-blocks, belongs to alcohols-buliding-blocks compound. In a document, author is Putri, Rakhmawati M., introducing its new discovery.

PEO/PVA/LiOH Solid Polymer Electrolyte Prepared via Ultrasound-assisted Solution Cast Method

Most solid polymer electrolytes (SPEs) still suffer from low ionic conductivity at room temperature, which may be caused by the inhomogeneity of polymer blend and Li-salt. Here, polyethylene oxide (PEO), polyvinyl alcohol (PVA), and lithium hydroxide (LiOH) SPEs were prepared by an ultrasonic method to improve the ionic conductivity and shorten the synthesis time. This procedure has successfully yielded a flexible, transparent, and homogeneous SPEs, which were thermally stable at fairly high temperature as revealed from thermogravimetric analysis (TGA). These samples also showed relatively high ionic conductivity at room temperature with the highest conductivity of 1.25 x 10(-4) S/cm and low activation energy of 0.253 eV demonstrated by sample with 2 wt% LiOH loading. Moreover, this sample was also stable in the measured voltage range, i.e., -5 to 5 V. DFT calculation showed that strong intermolecular charge transfer was present in the interaction between Li+ ion with PVA and PEO chain.

If you are hungry for even more, make sure to check my other article about 1562-00-1, Quality Control of Sodium isethionate.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 3391-86-4, Name is Oct-1-en-3-ol, molecular formula is , belongs to alcohols-buliding-blocks compound. In a document, author is Milanovic, Vesna, Recommanded Product: Oct-1-en-3-ol.

Evaluation of the inhibitory activity of essential oils against spoilage yeasts and their potential application in yogurt

Yeasts are the leading cause of spoilage in yogurt. Considering the high demand from consumers to use natural products as an alternative to additives, essential oils (EOs) could be a promising solution to guarantee high microbiological standards. The present study highlighted the in vitro antifungal potential of cinnamon, ginger, lemongrass, mandarin, orange, lemon and lime EOs against spoilage yeasts isolated from yogurts prepared with pasteurized buffalo milk. A total of 74 isolates represented by 14 different species of Candida, Rhodotorula, Debaryomyces, Kluyveromyces and Yarrowia genera were subjected to a disc diffusion assay, showing lemongrass EO to have the highest antifungal activity (40.97 +/- 9.86 mm), followed by cinnamon (38.46 +/- 6.59 mm) and orange (12.00 +/- 4.52 mm) EOs. Yarrowia lipolytica was less susceptible to lemongrass EO than Candida sake and Yarrowia deformans isolates. Ginger EO exhibited the lowest efficacy. A minimum inhibitory concentration (MIC) assay showed the ability of lemongrass and cinnamon EOs to inhibit the growth of all selected isolates at concentrations between <= 0.31 and 1.25 mu L/mL. Therefore, for the first time, the two best-performing EOs (lemongrass and cinnamon) based on in vitro assays were assessed for their potential roles as preservatives in an in vivo yogurt model prepared at the laboratory scale. Since some limitations, such as the inhibition of lactic acid bacteria by cinnamon EO, consequently leading to fermentation failure as well as species-specific antifungal activity of lemongrass EO, were observed, further studies are needed to explore the possibility of using a slightly higher concentration of lemongrass EO and/or combinations of different EOs and/or their components. Finally, since yogurt spoilage could also be prevented by correct sanitation procedures of the production environment, the sanitizers commonly used in the food industry were tested against all isolates, showing the high efficiency of alcohol-based sanitizers and the ineffectiveness of chlorine-based sanitizers. Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 3391-86-4, in my other articles. Recommanded Product: Oct-1-en-3-ol.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry, like all the natural sciences, begins with the direct observation of nature¡ª in this case, of matter.870-72-4, Name is Hydroxymethanesulfonic Acid Sodium Salt, SMILES is O=S(CO)([O-])=O.[Na+], belongs to alcohols-buliding-blocks compound. In a document, author is Yeoman, Amber M., introduce the new discover, Category: alcohols-buliding-blocks.

Estimating person-to-person variability in VOC emissions from personal care products used during showering

An increasing fraction of volatile organic compounds (VOC) emissions come from the domestic use of solvents, contained within myriad commonplace consumer products. Emission rates are often poorly characterized and depend significantly on individual behavior and specific product formulation and usage. Time-concentration profiles of volatile organic compounds (VOCs) arising from the use of a representative selection of personal care products (PCPs) during showering are generated, and person-to-person variability in emissions calculated. A panel of 18 participants used a standardized set of products, dosages, and application times during showering in a controlled indoor bathroom setting. Proton transfer mass spectrometry was used to measure the in-room VOC evolution of limonene (representing the sum of monoterpenes), benzyl alcohol, and ethanol. The release of VOCs had reproducible patterns between users, but noticeable variations in absolute peak concentrations, despite identical amounts of material being used. The amounts of VOC emitted to air for one showering activity were as follows: limonene (1.77 mg +/- 42%), benzyl alcohol (1.07 mg +/- 41%), and ethanol (0.33 mg +/- 78%). Real-world emissions to air were between 1.3 and 11 times lower than bottom-up estimates based on dynamic headspace measurements of product emissions rates, likely a result of PCPs being washed away before VOC evaporation could occur.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 870-72-4 is helpful to your research. Category: alcohols-buliding-blocks.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 156-87-6, Name is 3-Aminopropan-1-ol, molecular formula is , belongs to alcohols-buliding-blocks compound. In a document, author is Hua, Mutian, SDS of cas: 156-87-6.

Strong tough hydrogels via the synergy of freeze-casting and salting out

Natural load-bearing materials such as tendons have a high water content of about 70 per cent but are still strong and tough, even when used for over one million cycles per year, owing to the hierarchical assembly of anisotropic structures across multiple length scales(1). Synthetic hydrogels have been created using methods such as electro-spinning(2), extrusion(3), compositing(4,5), freeze-casting(6,7), self-assembly(8) and mechanical stretching(9,10) for improved mechanical performance. However, in contrast to tendons, many hydrogels with the same high water content do not show high strength, toughness or fatigue resistance. Here we present a strategy to produce a multi-length-scale hierarchical hydrogel architecture using a freezing-assisted salting-out treatment. The produced poly(vinyl alcohol) hydrogels are highly anisotropic, comprising micrometre-scale honeycomb-like pore walls, which in turn comprise interconnected nanofibril meshes. These hydrogels have a water content of 70-95 per cent and properties that compare favourably to those of other tough hydrogels and even natural tendons; for example, an ultimate stress of 23.5 +/- 2.7 megapascals, strain levels of 2,900 +/- 450 per cent, toughness of 210 +/- 13 megajoules per cubic metre, fracture energy of 170 +/- 8 kilojoules per square metre and a fatigue threshold of 10.5 +/- 1.3 kilojoules per square metre. The presented strategy is generalizable to other polymers, and could expand the applicability of structural hydrogels to conditions involving more demanding mechanical loading. A strategy that combines freeze-casting and salting-out treatments produces strong, tough, stretchable and fatigue-resistant poly(vinyl alcohol) hydrogels.

If you are hungry for even more, make sure to check my other article about 156-87-6, SDS of cas: 156-87-6.

Reference:
Alcohol – Wikipedia,
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Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 5187-23-5, Name is (5-Ethyl-1,3-dioxan-5-yl)methanol, molecular formula is , belongs to alcohols-buliding-blocks compound. In a document, author is Hao, Fang, Computed Properties of C7H14O3.

One-step complexed preparation of nitrogen and Cu co-doped oxidative active carbon catalysts Cu-N/OAC for furfural selective hydrogenation with high yield

A facile procedure for preparing copper and nitrogen co-doped active carbon (Cu-N/OAC) by one-step complexed was reported and applied in liquid-phase hydrogenation of furfural (FAL). The facile procedure resulted in high Cu nanoparticles dispersion on OAC with Cu-0 and Cu+ sites and apparently promoted the catalytic activities during furfural hydrogenation reaction. The obtained Cu-N/OAC-800 shows 99.5% FAL conversion with 98.4% selectivity to furfuryl alcohols (FOL) under reaction condition of 150 degrees C, 2 MPa and 6 h. These results indicated that the excellent catalytic performance of the catalyst was due to the synergic effects of nitrogen doping and Cu metal active sites.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 5187-23-5, in my other articles. Computed Properties of C7H14O3.

Reference:
Alcohol – Wikipedia,
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Electric Literature of 2807-30-9, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 2807-30-9, Name is 2-Propoxyethanol, SMILES is CCCOCCO, belongs to alcohols-buliding-blocks compound. In a article, author is Sivec, Rok, introduce new discover of the category.

Surface kinetics and transport phenomena modelling for furfural hydrotreatment over Pd/C in isopropanol and tetrahydrofuran

Extensive experimental and computational study of hemicellulose-derived furfural hydrogenation, hydrodeoxygenation, oligomerisation and etherification has been conducted over Pd/C catalyst. In-situ reduction of PdO surfaces was observed, forming predominately Pd(111). Tetrahydrofurfuryl alcohol was observed as the main product. Selected solvent (solventless conditions, tetrahydrofuran, isopropanol), atmosphere (nitrogen, hydrogen), temperature (100-200 degrees C), pressure (25-75 bar) and stirring speed were varied. A micro-kinetic model was developed incorporating thermodynamics (hydrogen solubility), mass transfer, adsorption, desorption and surface reactions. The above-listed phenomena and their contribution to the surface coverages, TOF’s and global reaction rates were studied. Approximately 66% of active sites were estimated to be covered by the solvent, 5% by furanic species, while hydrogen coverage was low and limiting. Both furfural ring and aldehyde group hydrogenation have low activation energies (19.1 kJ mol(-1) and 23.5 kJ mol(-1)), although subsequent hydrogenation of tetrahydrofurfural (E-a = 42.5 kJ mol(-1)) is preferred at higher temperatures compared to furfuryl alcohol (E-a = 24.0 kJ mol(-1)) hydrogenation. Complete hydrogenation can be achieved at room temperature, while deoxygenation becomes considerable above 150 degrees C (E-a = 59.6 kJ mol(-1)), leading to complete conversion in most tests, yielding up to 77% tetrahydrofurfuryl alcohol at 75 bar in isopropanol.

Electric Literature of 2807-30-9, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 2807-30-9 is helpful to your research.

Reference:
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Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 873-76-7, Name is (4-Chlorophenyl)methanol, SMILES is OCC1=CC=C(Cl)C=C1, belongs to alcohols-buliding-blocks compound. In a document, author is Aredes, Rafaella Silva, introduce the new discover, Category: alcohols-buliding-blocks.

Evaluation of craft beers through the direct determination of amino acids by capillary electrophoresis and principal component analysis

The composition of beer wort in terms of amino acid (AA) content affects the final product quality, once it is related to the vitality of yeast during the initial exponential growth phase and throughout fermentation. The objective of this work was the use of a capillary zone electrophoresis method with UV-vis detection in association with Principal Component (Data) Analysis for craft beer classification. Cysteine, histidine, phenylalanine, lysine, tryptophan and arginine were the monitored AAs in wort and finished beer, which were extracted through cation exchange resin. Good differentiation among samples according to their production was obtained, showing a profile of AAs (6.5-55 mu g mL(-1)), which can be explained by the protein cleavage.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 873-76-7 is helpful to your research. Category: alcohols-buliding-blocks.

Reference:
Alcohol – Wikipedia,
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In an article, author is Cheng, Runqing, once mentioned the application of 4740-78-7, Quality Control of 1,3-Dioxan-5-ol, Name is 1,3-Dioxan-5-ol, molecular formula is C4H8O3, molecular weight is 104.11, MDL number is MFCD00014645, category is alcohols-buliding-blocks. Now introduce a scientific discovery about this category.

Effects of nine steaming nine sun-drying on proximate composition, oil properties and volatile compounds of black sesame seeds

Black sesame seeds (BSS) were processed by nine cycles of steaming and sun-drying, and the chemistry of their resulting products studied. That is, the shell color and structure, proximate composition, oil properties and volatile compounds of raw BSS were determined and compared with processed BSS. Various levels of shell color change and structure damage were observed. The proximate composition also differed, whereas the relative proportion of fatty acids and oil properties were unchanged. SPME-GCMS analysis revealed that aldehydes, hydrocarbons and alcohols were the main volatile compounds. And compared with raw BSS, four volatile substances were newly detected in the processed BSS. Principal component analysis (PCA) displayed the overall difference between samples and showed that repeated steaming and sun-drying process had a significant impact on the chemical composition of BSS.

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Reference:
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