Author: tianli

Tang, Sheng published the artcileDye adsorption by self-recoverable, adjustable amphiphilic graphene aerogel, Computed Properties of 111-87-5, the main research area is selfrecoverable adjustable amphiphilic graphene aerogel dye adsorption; Adjustable amphiphilic; Dye adsorption; Graphene aerogel; Self-recoverable.

A type of self-recoverable, adjustable amphiphilic graphene aerogel (GA) was prepared and applied to the dye adsorption. The GA with polyvinyl alc. (PVA) as its crosslinking agent has the characteristics of adjustable amphiphilicity. By adjusting the PVA content in GA, the later can be used to adsorb dyes with different hydrophobic and hydrophilic properties. Four kinds of dyes (Malachite green, Rhodamine B, Methylene blue and Methyl orange) were applied as targets and the saturated adsorption amounts were calculated The Langmuir adsorption model and the Lagrange pseudo-second-order equation math. model were used to study the behavior of dye adsorption by GA, and the exptl. data was in full compliance with the math. models. The excellent mech. properties (compressibility and recoverability) make the GA suitable for dye adsorption. A computational simulation was also performed to verify the adsorption energy of GA to dyes. The GA was able to retain 89.5% of its initial removal efficiency (for malachite green) after 10 cycles of application.

Journal of Colloid and Interface Science published new progress about Absorption. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Computed Properties of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Fu, Junchao published the artcilePreparation and properties of UV-curable hyperbranched polyurethane acrylate hard coatings, COA of Formula: C17H28O8S4, the main research area is hyperbranched polyurethane acrylate hard coating mech property.

In order to efficiently protect plastic cover of 5G mobile phones, a novel hyperbranched polyurethane acrylate-based hard coating (HBPUA) having highly rigid hyperbranched cores was prepared and used as the protective film. For purpose of researching the structure and property relationship, two more hyperbranched cores (Hyper-6OH) and corresponding HBPUA oligomers were also synthesized. The structures of Hyper-6OH and HBPUA were characterized by proton NMR, and the mol. weight of HBPUA was confirmed by gel permeation chromatog. To further enhance the crosslinking and lower the internal stress, pentaerythritol tetra(3-mercaptopropionate) (PETMP) was introduced into the film system. The curing behaviors of the prepared HBPUA coatings were determined by Fourier-transform IR spectroscopy. The results indicated that the double bond conversion was associated with the rigidity of the hyperbranched core and the content of thiol groups. The properties of HBPUA-based films were characterized by the test of gel content, swelling ratio and water absorption and as well as dynamic mech. property, mech. property, thermogravimetry and surface property. The results reveal that the pencil hardness of the prepared coatings reaches 5H that is higher than the com. available resin PUA-6, enabling potential application in the protection of plastic cover. The rigidity of the hyperbranched cores and the introduction of PETMP remarkably affect the Tg value of the films, and the addition of thiol groups increases the gel content, swelling ratio, toughness and adhesion of coatings, but decreases the water absorption and tensile strength. Moreover, all coatings exhibit good thermal properties.

Progress in Organic Coatings published new progress about Absorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, COA of Formula: C17H28O8S4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Huang, Lijie published the artcilePreparation and properties of cassava residue cellulose nanofibril/cassava starch composite films, Application of (S)-2-hydroxysuccinic acid, the main research area is cellulose nanofibril cassava starch nanocomposite film preparation property; cassava residue; cassava starch; cellulose nanofibril; composite film; modified; nanocomposite.

Because of its non-toxic, pollution-free, and low-cost advantages, environmentally-friendly packaging is receiving widespread attention. However, using simple technol. to prepare environmentally-friendly packaging with excellent comprehensive performance is a difficult problem faced by the world. This paper reports a very simple and environmentally-friendly method. The hydroxyl groups of cellulose nanofibrils (CNFs) were modified by introducing malic acid and the silane coupling agent KH-550, and the modified CNF were added to cassava starch as a reinforcing agent to prepare film with excellent mech., hydrophobic, and barrier properties. In addition, due to the addition of malic acid and a silane coupling agent, the dispersibility and thermal stability of the modified CNFs became significantly better. By adjusting the order of adding the modifiers, the hydrophobicity of the CNFs and thermal stability were increased by 53.5% and 36.9% ± 2.7%, resp. At the same time, the addition of modified CNFs increased the tensile strength, hydrophobicity, and water vapor transmission coefficient of the starch-based composite films by 1034%, 129.4%, and 35.95%, resp. This material can be widely used in the packaging of food, cosmetics, pharmaceuticals, and medical consumables.

Nanomaterials published new progress about Absorption. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Application of (S)-2-hydroxysuccinic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mech, Paulina published the artcileWhen biomolecules meet 2-hydrazinopyrazine: from theory through experiment to molecular levels using a wide spectrum of techniques, Recommanded Product: n-Octanol, the main research area is hydrazinopyrazine structure physicochem cytotoxic property.

The design of drug structures that are non-toxic, easily transported and permeable to cellular barriers is currently one of the most growing research trends. Indeed, the structural similarity of 2-hydrazinopyrazine (2HP) to pyrazinamide, which has been successfully used in anti-tuberculosis therapy, makes 2HP a promising research object. Thus, herein, a complete anal. of the structure of 2HP and its physicochem. and cytotoxic properties was performed. Calf thymus DNA (CT-DNA) and bovine serum albumin (BSA) binding studies were conducted, which demonstrated the higher affinity of 2HP to BSA. Furthermore, cytotoxicity tests were performed, which proved that 2HP was non-toxic to human skin keratinocyte cells. Accordingly, 2HP was initially classified as a compound with potential application. Physicochem. investigations were performed using a wide range of experiments, which were supported by DFT calculations using the B3LYP functional and 6-311+G** basis set. The good correlation, high quality and correctness of the obtained parameters were proven although the data was obtained using independent techniques. Addnl., 42 tautomeric (prototrophic) forms of 2HP were found by searching the conformational hyperspace. The most energy stable 2HP conformer structure and the partial charge distribution were established. The preferred 2HP ionic forms preferred were presented, and models of the equilibrium occurring in aqueous solution were proposed. The hydrophilic character of 2HP was established based on the partition coefficient values determined by both experiment and theory. The PCM and SMD solvent models of water and n-octanol were used.

RSC Advances published new progress about Absorption. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Recommanded Product: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yang, Yanmin published the artcileStructural characterization and antioxidant activities of one neutral polysaccharide and three acid polysaccharides from Ziziphus jujuba cv. Hamidazao: A comparison, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Ziziphus Hamidazao neutral acid polysaccharide antioxidant anticancer agent; liver cancer; Antioxidant; Comparison; Polysaccharide; Structural characterization; Ziziphus jujuba cv. Hamidazao.

A neutral polysaccharide (HJP-1a) and three acid polysaccharides (HJP-2, HJP-3 and HJP-4) were obtained from Z. jujuba cv. Hamidazao. HJP-1a was mainly composed of arabinose and galactose in a ratio of 56.9:20.0, with an average mol. weight of 3.115 x 104 g/mol. HJP-2, HJP-3 and HJP-4 were homogeneous heteropolysaccharides mainly containing galacturonic acid, arabinose and galactose, with average mol. weights of 4.590 x 104, 6.986 x 104 and 1.951 x 105 g/mol, resp. Structural characterization indicated that the backbone of HJP-3 appeared to be mainly composed of �-alpha-D-GalpA (1�and �,4)-alpha-L-Rhap (1�residues with some branches consisting of �)-alha-L-Araf 1�residues and terminals of T-alpha-L-Araf 1�and T-beta-D-Galp residues. The four purified fractions displayed dose-dependent radical scavenging activity on ABTS+ radicals and reducing capacity, as well as excellent protective effect on H2O2-induced HepG2 cells and metronidazole-damaged zebrafish embryos, especially HJP-2 in vitro and HJP-1a in vivo. Therefore, the polysaccharides from Z. jujuba cv. Hamidazao could be used as a potential antioxidant in functional foods.

Carbohydrate Polymers published new progress about Absorption. 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

Chen, Lin published the artcileFreeform Three-Dimensionally Printed Microchannels via Surface-Initiated Photopolymerization Combined with Sacrificial Molding, Recommanded Product: (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, the main research area is three dimension printed microchannels surface initiated photopolymerization; Eosin Y disodium salt; freeform 3D printing; isomalt; microchannels; sacrificial molding; surface-initiated photopolymerization.

Precise freeform microchannels within an aqueous environment have several biomedical applications but remain a challenge to fabricate. Carbohydrate glass materials have shown potential for three-dimensionally (3D) printing precise, microscale structures and are suitable as a sacrificial material to reconstruct complex channel architectures, but due to the rapid dissolution kinetics in hydrogels and the aqueous environment, protective coatings are required. Here, conformal coatings were applied to carbohydrate structures via surface-initiated photopolymerization (SIP) by incorporating a photoinitiator (PI) into freeform 3D printed isomalt structures using a custom 3D printer. Structures were then immersed into a photocurable prepolymer bath and exposed to light for reaction initiation. To achieve uniform distribution of photoinitiator mols. in 3D printed constructs, miscibility between com. photoinitiators and isomalt was modeled using the group contribution method. A dye-based, type-two photoinitiator, Eosin Y disodium salt (EY), was selected for its miscibility with isomalt and stability under high temperature A previously described Eosin Y (EY)/triethanolamine (TEA) radical polymerization system was used to polymerize poly(ethylene glycol) diacrylate (PEGDA). Attenuated total reflectance-Fourier transform IR (ATR-FTIR), surface morphol., and swelling ratio characterizations via SIP were performed. Coatings around freeform structures and solid surfaces were presented to demonstrate the capability of coating complex architectures. This coating method should facilitate the application of 3D sacrificial molding in a variety of hydrogels toward building biomimetic vascular constructs.

ACS Applied Materials & Interfaces published new progress about Miscibility. 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, Recommanded Product: (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.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Morales, M. L. published the artcileVolatile metabolites produced by different flor yeast strains during wine biological ageing, Category: alcohols-buliding-blocks, 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. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wu, Shuang published the artcileHenry’s Law Constants and Indoor Partitioning of Microbial Volatile Organic Compounds, SDS of cas: 111-87-5, the main research area is Henry law indoor microbial volatile organic compound partitioning modeling; Henry’s law constant; chemical exposure; chemical partitioning; equilibrium partitioning; indoor air quality; indoor environment; microbial volatile organic compounds.

Microbial volatile organic compounds (MVOCs) play an essential role in many environmental fields, such as indoor air quality. Long-term exposure to odorous and toxic MVOCs can neg. affect the health of occupants. Recently, the involvement of surface reservoirs in indoor chem. has been realized, which signifies the importance of the phase partitioning of volatile organic pollutants. However, reliable partition coefficients of many MVOCs are currently lacking. Equilibrium partition coefficients, such as Henry’s law constant, H, are crucial for understanding the environmental behavior of chems. This study aims to exptl. determine the H values and their temperature dependence for key MVOCs under temperature relevant to the indoor environment. The H values were determined with the inert gas-stripping (IGS) method and variable phase ratio headspace (VPR-HS) technique. A two-dimensional partitioning model was applied to predict the indoor phase distribution of MVOCs and potential exposure pathways to the residences. The findings show that the MVOCs are likely distributed between the gas and weakly polar (e.g., organic-rich) reservoirs indoors. Temperature and the volume of reservoirs can sensitively affect indoor partitioning. Our results give a more comprehensive view of indoor chem. partitioning and exposure.

Environmental Science & Technology published new progress about Henry’s law. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, SDS of cas: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Montanha, Gabriel S. published the artcileZinc uptake from ZnSO4 (aq) and Zn-EDTA (aq) and its root-to-shoot transport in soybean plants (Glycine max) probed by time-resolved in vivo X-ray spectroscopy, Related Products of alcohols-buliding-blocks, the main research area is Glycine root shoot zinc sulfate EDTA X ray spectroscopy; Chemical speciation; Micronutrient transportationin vivo kinetics; XANES; XRF; Zinc uptake.

This study investigated the dynamic of zinc (Zn) uptake and the root-to-shoot Zn-transport when supplied as ZnSO4(aq) or Zn-EDTA (aq) in soybean seedlings using in vivo X-ray fluorescence (XRF) and X-ray absorption spectroscopy (XANES). The time-resolved X-ray fluorescence showed that plants absorbed ca. 10-fold more Zn from ZnSO4(aq) than from Zn-EDTA (aq). However, the uptake velocity did not influence the amount of Zn in the stem. It let furthermore appear that the plants were able to reduce the absorption of Zn from Zn-EDTA (aq) earlier than ZnSO4(aq). Thus, the entrance of Zn2+ into the roots is not necessarily accompanied by SO2-42-(aq). Regardless the source, the Zn distribution and its transport in the stem were spatially correlated to the bundles and cortex nearby the epidermal cells. Its chem. speciation showed that Zn is neither transported as ZnSO4(aq) nor as Zn-EDTA(aq), indicating that these compounds are retained in the roots or biotransformed on in the root-solution interface. Zn2+ was long-distance transported complexed by organic mols. such as histidine, malate, and citrate, and the proportion of ligands was affected by the concentration of Zn2+ in the stem rather than by the type of Zn source.

Plant Science (Shannon, Ireland) published new progress about Glycine max. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lee, Jic-Hyun published the artcileProduction of γ-Aminobutyric Acid and Its Supplementary Role in the TCA Cycle in Rice (Oryza sativa L.) Seedlings., Related Products of alcohols-buliding-blocks, the main research area is Oryza seed germination gamma aminobutyric acid TCA cycle.

In this study, we analyzed GABA shunt-related amino acids [glutamate (Glu), alanine (Ala), and GABA] and tricarboxylic acid (TCA)-cycle-related organic acids (pyruvate, citrate, α-ketoglutarate, succinate, fumarate, and malate) in rice, under dark and anaerobic conditions, to investigate the role of GABA in rice germination. The change in the GABA content before and after germination was compared using 2 cultivars selected from 18 varieties of Korean rice. Correlation anal. indicated that the metabolism of GABA in germinating rice might be related to Ala metabolism In a two-way stress study, GABA content was found to be pos. related to TCA-cycle organic acid contents (α-ketoglutarate, succinate, fumarate, and malate) but show a neg. relation with GABA shunt-related amino acid contents (Glu, Ala). In the dark, accumulation of TCA-cycle organic acids was observed, but Glu and Ala levels were reduced. GABA treatment (1 mM) in dark conditions produced TCA-cycle organic acids at levels similar to those in light conditions. In anaerobic conditions, TCA-cycle-related compounds accumulated at a high level, but Glu and Ala were remarkably reduced compared with normal conditions. As a result, GABA shunt is connected with TCA-cycle organic acids, but not amino acids. In conclusion, the present research suggests that GABA, accumulated in certain stress conditions, supplies organic acids such as succinate to the TCA cycle.

Journal of Plant Growth Regulation published new progress about Germination. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts