Author: tianli

Yuan, Yiqiong published the artcileEffect of simulated gastrointestinal digestion in vitro on the antioxidant activity, molecular weight and microstructure of polysaccharides from a tropical sea cucumber (Holothuria leucospilota), Computed Properties of 59-23-4, the main research area is Holothuria simulated gastrointestinal digestion polysaccharide antioxidant microstructure.

The physicochem. properties of Holothuria leucospilota polysaccharides (HLP) were measured, and the changes of mol. weight (Mw), antioxidant activity and microstructure in vitro were studied. The Mw of HLP was approx. 52.80 kDa, and the monosaccharide composition was primarily fucose, rhamnose and glucuronic acid. HLP showed good antioxidant activity at high concentration (≥2 mg/mL), and the DPPH (1,1-Diphenyl-2-picryl-hydrazil) free radical scavenging rate reached approx. 84%. It was observed that saliva did not have an effect on the Mw and antioxidant capability of HLP. Gastric and intestinal digestion significantly reduced the Mw of HLP (from 52.80 kDa to 14.67 kDa and 12.01 kDa) and maintained high antioxidant activity. In addition, the structure and surface morphol. were markedly altered. After simulated gastric digestion, the HLP changed from a smooth, irregular, and angular structure to a layered honeycomb with a large volume This result demonstrated that the decrease of Mw after gastric digestion was caused by the destruction of aggregates. Due to the decomposition of glycosidic bonds after digestion in intestine, HLP showed loose, small and blocky structures. Thus, HLP had antioxidant activity, and this activity was improved after gastric and intestinal digestion.

Food Hydrocolloids published new progress about Digestive juice. 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, Computed Properties of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sims, Samantha M. published the artcileCorrelating structure with ionic conductivity in bis(phosphonium)-containing [NTf2] thiol-ene networks, Related Products of alcohols-buliding-blocks, the main research area is correlating ionic conductivity phosphonium containing ionic liquid photopolymerization.

Thiol-ene photopolymerization was employed in order to prepare a series of covalently crosslinked bis(phosphonium)-containing poly(ionic liquid) (PIL) networks. While the counteranion was held constant (NTf2), the structure of the bis(phosphonium)-containing ‘ene’ monomer was varied in order to explore the breadth of thermal, mech. and conductive properties available for this system. Towards this end, it was determined that more flexible spacers within the cationic monomer led to PIL networks with lower Tg values and higher conductivities. Most notable was a two- to three-orders-of-magnitude increase in ionic conductivity (from 10-9 to 10-6 S cm-1 at 30 °C, 30% relative humidity) when the R group on phosphonium was changed from Ph to iso-Pr. Changing the functional group ratio to off-stoichiometry also led to a slight increase in conductivity Although the thermal stability (Td5%) of the phosphonium ionic liquid monomers was found to be significantly higher (>400 °C) than that of analogous imidazolium monomers, this improvement was not observed to directly transfer over to the polymer where a two-step decomposition pathway was observed The first step is attributed to the thiol monomer backbone while the second step correlates well with decomposition of the phosphonium portion of the PIL. © 2019 Society of Chem. Industry.

Polymer International published new progress about Dielectric loss. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Borchers, Philipp S. published the artcileA Viologen Polymer and a Compact Ferrocene: Comparison of Solution Viscosities and Their Performance in a Redox Flow Battery with a Size Exclusion Membrane, Formula: C17H28O8S4, the main research area is bipyridine styrene polymer ferrocene containing pentaerythritol redox flow battery.

In this work, the synthesis and characterization of a compact, ferrocene tetramer and a linear viologen polymer is reported. The latter material is a new, 4,4′-bipyridine containing, organo-soluble polymer. As aimed for solubility in nonpolar solvents, a 2-ethylhexyl-moiety to promote organosoly. and 4-vinylbenzyl serving as a polymerizable group are introduced to a 4,4′-bipyridine. The halide anions of the monomer cation are exchanged to bis(trifluoromethansulfon)imide, which further enhances organosoly. The monomer is subsequently copolymerized with styrene by free radical polymerization In addition, a four-ferrocene-containing compact structure, based on pentaerythritol, is synthesized via the straightforward radical thiol-ene reaction. The polymer solutions are thoroughly characterized hydrodynamically. Subsequently, propylene carbonate-based solutions of both materials are prepared to allow an assessment for future energy storage applications. This is done by testing battery characteristics in a custom-made flow-cell with a simple dialysis membrane for phys. separation of the active materials. The capability of energy storage is verified by leaving the charged materials in solution in an open circuit for 24 h. Here, more than 99% of the stored charges can be recovered. Cycling the battery for 100 times reveals the remarkable stability of the materials of only 0.2% capacity loss per day in the battery setup.

Macromolecular Chemistry and Physics published new progress about Current density. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Formula: C17H28O8S4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhao, Yiping published the artcileThree-stage microwave extraction of cumin (Cuminum cyminum L.) Seed essential oil with natural deep eutectic solvents, Application of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, the main research area is Cuminum tricyclene seed essential oil natural deep eutectic solvent.

As a class of promising green media, natural deep eutectic solvents (NADESs) have attracted more and more attention in recent years. In this paper, a novel method based on microwave-assisted natural deep eutectic solvents pretreatment coupled with microwave hydrodistillation (MA-NADES-MHD) was used for the extraction of essential oil from Cuminum cyminum L. seed. NADESs were used as pretreatment solvents for adsorbing microwaves and dissolving cellulose. The maximum yield of essential oil obtained with this three-stage microwave extraction technol. was 2.22% (weight/weight) when the natural deep eutectic solvent composed of choline chloride and L-lactic acid (with 1:3 of molar ratio) with 40% (weight/weight) of water. Compared with microwave hydrodistillation (MHD) and ultrasound-assisted natural deep eutectic solvents pretreatment combined with microwave hydrodistillation (UA-NADES-MHD) in which essential oil yield of 1.13% (weight/weight) and 1.57% (weight/weight) were obtained, resp., the MA-NADES-MHD naturally brought more essential oil. Notably, a total of 45, 48, and 58 volatile components were identified by using gas chromatog.-mass spectrometry with MHD, UA-NADES-MHD, and MA-NADES-MHD, resp. Hence, NADESs had a significant impact on the extraction of essential oil with higher yield, premium quality, and more quantity, especially when it was combined with microwave technol. Moreover, the MA-NADES-MHD as an economical and eco-friendly technique had the potential to be applied to other plant materials.

Industrial Crops and Products published new progress about Cuminum cyminum. 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, Application of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Peng published the artcileSolubility of Isomalt in the Water + Ethanol Solvent System at (288.15, 298.15, 308.15, and 318.15) K, Synthetic Route of 64519-82-0, the main research area is solubility isomalt water ethanol solvent system.

The solubility of isomalt in the water + ethanol solvent system was measured with the mole fraction of water ranging from 0.00 to 1.00 at (288.15, 298.15, 308.15, and 318.15) K by using the laser method that is timesaving and the gravimetric method that is more reliable. The data were fitted using the simplified Jouyban-Acree model. In this study, the solubility data obtained by these two methods were compared. The mean relative deviations for isomalt solubility determined by the laser method and the gravimetric method were less than 25 % and 17 %, resp.

Journal of Chemical & Engineering Data published new progress about Crystallization. 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, Synthetic Route of 64519-82-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Cheng published the artcileRapidly reprogrammable actuation of liquid crystal elastomers, Name: Pentaerythritol tetra(3-mercaptopropionate), the main research area is liquid crystal elastomer reprogrammable actuation.

A rapid and reprogrammable alignment strategy for the reversible actuation of liquid crystal elastomers has been achieved through the phase-transition-induced shape memory effect. This breakthrough, recently reported in Advanced Materials by Xie and colleagues, illustrated the important role of shape-memory-induced stress regulation in developing and improving functional polymer materials.

Matter published new progress about Crystallization. 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

Tananuwong, Kanitha published the artcileImpact of hydrogenated starch hydrolysate on glass transition, hygroscopic behavior and crystallization of isomalt-based systems, Safety of (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 isomalt hydrogenated starch hydrolyzate glass transition crystallization water uptake.

Glass transition behavior, adsorption isotherm and crystallization of isomalt-hydrogenated starch hydrolyzate (HSH) mixtures (0-20% HSH) and pure HSH were investigated. At similar solid content, Tg decreased as HSH concentration increased. Tg data at different solid contents were well-fitted with Gordon-Taylor equation (R2≥0.97). Adsorption isotherm showed that systems with greater HSH concentration became more hygroscopic. Accelerated storage test (30°C, 84% RH) of modeled hard candy containing 10% HSH and pure isomalt formula was done. HSH enhanced water uptake and crystallization of polyols in hard candy during aging without packaging; however, those effects were lessen for the samples aged in polyethylene terephthalate/cast polypropylene (PET/CPP) pouches, and were negligible after the application of superior moisture barrier, oriented polypropylene/metalized cast polypropylene (OPP/MCPP) film. Although HSH adversely affected storage stability of sugarless hard candies, it could be add into the formulation together with the application of packaging having a good moisture barrier.

Songklanakarin Journal of Science and Technology published new progress about Crystallization. 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, Safety of (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

Nopianti, R. published the artcileEffect of different types of low sweetness sugar on physiocochemical properties of threadfin bream surimi (Nemipterus spp.) during frozen storage, COA of Formula: C12H24O11, the main research area is sugar cryoprotectant Nemipterus storage.

The effects of different types of low-sweetness sugar (lactitol, maltodexrin, palatinit, polydextrose, trehalose) on the physicochem. properties of threadfin bream (Nemipterus spp.) surimi during six months of frozen storage were investigated. The characteristics analyzed were moisture content, pH, water-holding capacity, whiteness, folding test, gel strength, expressible moisture, and texture profile analyses. Generally, the cryoprotective effectiveness decreased as the storage time increased. Polydextrose was able to maintain a water-holding capacity of 77.0%, 98.6% whiteness, a folding test value of 100%, and a gel strength of 53.6% compared with its initial value during six months of frozen storage. Meanwhile, sucrose was able to maintain a water-holding capacity of 80.3%, 98.6% whiteness, a folding test value of 75%, and a gel strength of 56.8% compared with its initial value. Raw surimi was able to maintain water holding capacity of 62.2%, 98.7% whiteness, a folding test value of 75%, and a gel strength of 36.0% compared with its initial value. It is suggested that, polydextrose as a potential alternative cryoprotectant to replace other low-sweetness sugars.

International Food Research Journal published new progress about Cryoprotectants. 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, COA of Formula: C12H24O11.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Jingying published the artcileIdentification of Key Aroma Compounds in Cranberry Juices as Influenced by Vinification, Quality Control of 505-10-2, the main research area is cranberry juice vinification aroma compound; GC−MS/O; PCA; SPME; aroma-active; cranberry wine; volatile compounds.

This study aimed to identify the key aroma-active volatiles in cranberry wines through three vinification methods (White, Red and Thermo) using GC-MS/O to identify the important aroma compounds A total of 70 compounds were detected, with 67 in wines and 61 in juices. The esters was the most diversified class, while alcs. and acids were the most abundant, especially 3-methylbutanol, methylbutyric acid, and benzoic acid. The volatile profiles of cranberry wines are distinctive from their source juices. Most alcs., esters, and acids are fermentation-derived, while terpenes, phenols, aldehydes and ketones are varietal. The Red vinification retained the most varietal volatiles from the must, while the White and Thermo vinifications produced more volatiles during fermentation Thermovinification reduced the yield of benzoic acid and its derivatives after fermentation Olfactory anal. identified 47 aroma-active compounds, among which 41 were considered as the major aroma contributors (Et benzoate had the highest modified detection frequency).

Journal of Agricultural and Food Chemistry published new progress about Cranberry juice. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Quality Control of 505-10-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jiang, Bing published the artcileWet-spun porous fibers from high internal phase emulsions: Continuous preparation and high stretchability, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is wet spun porous fiber internal phase emulsion stretchability.

Although high internal phase emulsion (HIPE)-templating is promising to prepare macroporous materials (polyHIPEs) with controllable shapes and tuneable property, fibrous polyHIPEs with stretchability and their continuous preparation are still challenging. Here, we report the fabrication of polyHIPE fibers in a continuous manner through wet spinning of HIPEs. The successful fabrication of polyHIPE fibers depends on HIPE dispersed phase fractions, ammonia-catalyzed interfacial reaction and wet spinning. Dry polyHIPE fibers exhibit tunable diameters, hierarchically porous structures, high stability to temperature and to various solutions, and high stretchability (with a high tensile strain of 155%), which is hard to achieve for polyHIPEs. The polyHIPE fibers show enhanced uptakes to both water (14.4 mL g-1) and organic solvents (up to 26.3 mL g-1), and the amphiphilic swelling is rare for polyHIPEs. Moreover, the dry polyHIPE fibers show good thermal insulation, similar to that of cotton. Simple wet spinning, combining with HIPEs with tuneable composition, is promising for preparing various polyHIPE fibers for various potential applications.

Journal of Polymer Science (Hoboken, NJ, United States) published new progress about Cotton textiles. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts