Category: alcohols-buliding-blocks

Li, Xinzhi published the artcileEffect of co-fermentation and sequential fermentation of Candida versatilis and Lactococcus lactis subsp. cremoris on unsalted pork hydrolysates components, Product Details of C4H10OS, the main research area is fermentation Candida Lactococcus cremoris hydrolyzate pork.

Summary : In this study, the effect of co-fermentation and sequential fermentation with a typical halophilic soy sauce yeast Candida versatilis and a non-halophilic dairy bacterium Lactococcus lactis subsp. cremoris in pork hydrolyzates was explored for the first time with regard to their viability, physicochem. changes and volatile compound production It was observed that the growth of C. versatilis was suppressed (only 0.6 – 1.5 log CFU mL-1 increase), while L. lactis subsp. cremoris was stimulated (total cell counts exceeded 9.0 log CFU mL-1) in mixed-cultures relative to the resp. monocultures. There were no significant differences between co-inoculation and sequential inoculation regarding glucose consumption, organic acid production and free amino acids utilization. Some distinct volatile compounds such as methionol, 6-methyl-5-hepten-2-one and gamma-nonalactone were found in both co-inoculated and sequentially inoculated samples, with slightly different concentrations These results suggest that the mixed-inoculation of C. versatilis and L. lactis have a pos. impact on the volatile compounds formation in pork hydrolyzates.

International Journal of Food Science and Technology published new progress about Bacillus cremoris. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Product Details of C4H10OS.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Maculewicz, Jakub published the artcileIn vitro methods for predicting the bioconcentration of xenobiotics in aquatic organisms, Category: alcohols-buliding-blocks, the main research area is vitro method bioconcentration xenobiotic aquatic organism; Bioaccumulation; Bioconcentration; Membrane partitioning; Protein binding; Sorption.

The accumulation of anthropogenic chem. substances in aquatic organisms is an immensely important issue from the point of view of environmental protection. In the context of the increasing number and variety of compounds that may potentially enter the environment, there is a need for efficient and reliable solutions to assess the risks. However, the classic approach of testing with fish or other animals is not sufficient. Due to very high costs, significant time and labour intensity, as well as ethical concerns, in vivo methods need to be replaced by new laboratory-based tools. So far, many models have been developed to estimate the bioconcentration potential of chems. However, most of them are not sufficiently reliable and their predictions are based on limited input data, often obtained with doubtful quality. The octanol-water partition coefficient is still often used as the main laboratory tool for estimating bioconcentration However, according to current knowledge, this method can lead to very unreliable results, both for neutral species and, above all, for ionic compounds It is therefore essential to start using new, more advanced and credible solutions on a large scale. Over the last years, many in vitro methods have been newly developed or improved, allowing for a much more adequate estimation of the bioconcentration potential. Therefore, the aim of this work was to review the most recent laboratory methods for assessing the bioconcentration potential and to evaluate their applicability in further research.

Science of the Total Environment published new progress about Benthic organisms. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Yijia published the artcileA Systematic comparison of in vitro cell uptake and in vivo biodistribution for three classes of gold nanoparticles with saturated PEG coatings, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is gold nanoparticle PEG coating cell uptake macrophage biodistribution clearance.

Due to the cost, time, and impact on the animals for in vivo studies, the nanoparticle field predominantly uses cellular uptake assays as a proxy to predict in vivo outcomes. Extensive research has focused on decreasing macrophage uptake in vitro as a proxy to delay nanoparticle accumulation in the mononuclear phagocytic system (MPS), mainly the liver and spleen, and thereby increase tumor accumulation. We further found that this extremely low cellular uptake could be recapitulated on solid gold nanoparticles by densely coating their surface with small mols. Here we report our studies on the biodistribution and clearance of these materials in comparison to more conventional PEGylated gold nanoparticles. It was expected that the remarkably low macrophage uptake in vitro would translate to extended blood circulation time in vivo, but instead we found no correlation between either surface coverage or in vitro macrophage cell uptake and in vivo blood circulation. Gold nanoaggregates accumulate more rapidly and to a higher level in the liver compared to control gold nanoparticles. The lack of correlation between in vitro macrophage uptake and in vivo blood circulation suggests that the field must find other in vitro assays to use as a primary proxy for in vivo outcomes or use direct in vivo experimentation as a primary assay.

PLoS One published new progress about Biological uptake. 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

Mahanta, Bhaskar Protim published the artcilePhytotoxic essential oil from black turmeric (Curcuma caesia Roxb.) rhizome: Screening, efficacy, chemical basis, uptake and mode of transport, Category: alcohols-buliding-blocks, the main research area is black turmeric rhizome phytotoxic essential oil screening transport.

Plant-based phytotoxins play an important role in plant-plant interaction and are of great promise for the development of bioherbicide. In this study, screening of essential oils from six different Curcuma rhizomes identified black turmeric (Curcuma caesia Roxb.) oil as an efficient growth inhibitor in wheatgrass coleoptile bioassay (IC50 57.1μg/mL). The phytotoxic efficacy of this oil was further confirmed through the dose dependent (10.0-300.0μg/mL) inhibition of germination, coleoptile and radicle growth of wheatgrass seeds in water medium (IC50 176.7, 90.6 and 93.0μg/mL resp.) and the pre-germinated seeds in agar medium. Activity-guided fractionation and purification of the crude oil identified curzerenone, a major furanosesquiterpene in this oil as the most active phytotoxin (IC50 13.0μg/mL in coleoptile bioassay; 188.3, 34.7 and 36.7μg/mL resp. in water medium). Structure-activity relationship study indicated the importance of all the functional groups for its phytotoxicity. A significant contribution by the oxygenated monoterpenes towards oil phytotoxicity was also evidenced. Though inhibitory efficacy of the oil was comparatively weak in soil, a profound activity through aerial diffusion was observed against germination and/or growth of fresh and pre-germinated wheatgrass seeds (IC50 1.4-6.2 mg/L air). The study also confirmed the uptake of active phytotoxins with no detectable transformation by the seeds in water and their persistence in the soil for at least one and half months. Further, its applicability was demonstrated through an efficient post-emergence growth inhibition (IC50 37.0-81.4μg/mL) of bermudagrass weed in water and agar medium.

Industrial Crops and Products published new progress about Biological uptake. 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, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Kaili published the artcileEditable shape-memory transparent wood based on epoxy-based dynamic covalent polymer with excellent optical and thermal management for smart building materials, Safety of Pentaerythritol tetra(3-mercaptopropionate), the main research area is editable shape memory transparent wood epoxy dynamic covalent polymer; optical thermal management smart building material.

Transparent wood (TW) with excellent optical and thermal management performance has been recently developed as a promising energy-efficient building material. Here, editable shape-memory TW (ESMTW) is developed through in situ polymerization of epoxy-based dynamic covalent polymers (EDCP) into a delignified wood scaffold. ESMTW possesses stiffness at low temperature and flexibility at high temperatures, while it exhibits excellent solid-state plasticity and shape-manipulation capability under thermal stimuli. Meanwhile, ESMTW shows unique light guiding and directional scattering effects, and the transmitted light intensity distribution is tunable owing to the shape-management capability. Addnl., the resultant TW possesses great thermal insulation properties. The combination of characteristics enables TW to exhibit great promise as an advanced functional and intelligent building material toward a sustainable society, especially for three-dimensional applications (e.g., curved or irregularly shaped glass, windows, ceilings, rooftops.). It may also provide new ideas for fabricating transparent and shape-editable optical/electronic devices.

Cellulose (Dordrecht, Netherlands) published new progress about Breaking strength. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Safety of Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zakowiecki, Daniel published the artcilePreparation of delayed-release multiparticulate formulations of diclofenac sodium and evaluation of their dissolution characteristics using biorelevant dissolution methods, HPLC of Formula: 64519-82-0, the main research area is diclofenac sodium dissolution drug formulation.

Diclofenac sodium was used as a model drug for preparation of delayed-release (DR) multiparticulates, which were further processed into solid oral dosage forms such as capsules and tablets. Multiple unit pellets systems (MUPS) were prepared from different types of starter pellets (inert cores) including microcrystalline cellulose pellets, sugar spheres, isomalt pellets and novel calcium phosphate-based pellets. The study results showed that the material of the inert cores affected both mech. properties of the drug-loaded pellets and the dissolution characteristic of the model drug. Biorelevant dissolution method carried out with the help of a pHysio-grad device allowed thorough examination of the developed formulations in the environment mimicking pH conditions along gastrointestinal tract. This method revealed significant differences between the formulations and their sensitivity to variable hydrodynamic conditions.

Journal of Drug Delivery Science and Technology published new progress about Breaking strength. 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, HPLC of Formula: 64519-82-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Tuskaev, Vladislav A. published the artcileNovel titanium(IV) diolate complexes with additional O-donor as precatalyst for the synthesis of ultrahigh molecular weight polyethylene with reduced entanglement density: Influence of polymerization conditions and its implications on mechanical properties, Safety of 2,2′-Oxydiacetic acid, the main research area is titanium diolate complex precatalyst UHMWPE polymerization.

New alkoxo-titanium(IV) complexes with diolate ligand containing addnl. donor oxygen atom have been synthesized from readily available and scalable precursors. The structure of complex 4 was established by X-ray diffraction. Titanium atom adopts a distorted tetrahedral geometry formed by six oxygen atoms of ligands. The resulting complexes 3-4 are moderately or highly active in ethylene polymerization in the presence of {EtnAlCl3-n + Bu2Mg} binary cocatalysts. The influence of the nature of the solvent, the organoaluminum cocatalyst and the polymerization temperature on the activity of catalytic systems, and the properties of the resulting polymers were studied. The obtained polymers are linear polyethylene of ultrahigh mol. weight (up to 5.8·106 g mol-1) with a broad mol. weight distribution. The polymers are suitable for the modern methods of polymer processing-the solventless solid-state formation of super high-strength (breaking strength up to 2.8 GPa) and high-modulus (elastic modulus up to 140 GPa) oriented films and film tapes. The possibility of scaling up the synthesis of ultrahigh mol. weight polyethylene (UHMWPE) without a significant drop in the productivity of the catalytic system and polymer properties is shown. UHMWPE samples have been investigated by small-angle X-ray scattering (SAXS) methods to study the structural changes induced by solid-state drawing of nascent reactor powders.

Applied Organometallic Chemistry published new progress about Breaking strength. 110-99-6 belongs to class alcohols-buliding-blocks, name is 2,2′-Oxydiacetic acid, and the molecular formula is C4H6O5, Safety of 2,2′-Oxydiacetic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Huang, Zhi published the artcileA novel polysaccharide from the roots of Millettia Speciosa Champ: preparation, structural characterization and immunomodulatory activity, Computed Properties of 59-23-4, the main research area is Millettia root polysaccharide fucose arabinose galactose pinocytosis; Immunomodulatory activity; Millettia Speciosa champ polysaccharide; Structural characterization.

A novel polysaccharide fraction (MSCP2) was extracted and isolated from the roots of Millettia Speciosa Champ. Structural characterization revealed that MSCP2 had an average mol. weight of 2.85 × 104 Da and was composed of fucose, arabinose, galactose, glucose and xylose with a ratio of 2.20: 2.52: 4.04: 87.29: 3.96. Methylation anal. and NMR (NMR) anal. showed that the main glycosidic linkage types of MSCP2 were proved to be α-D-Glcp-(1→, →4)-α-D-Glcp-(1→, →4)-α-D-Xylp-(1→, →6)-α-D-Galp-(1→, α-L-Araf-(1→, →3,4)-β-L-Fucp-(1→) and →4)-α-D-GalpA-(1→). The immunomodulatory assay suggested that MSCP2 could significantly improve the pinocytic capacity and increase the secretion of nitric oxide (NO) and cytokines by regulating the corresponding mRNA expression in RAW 264.7 cells. The data from the membrane receptor assay demonstrated that the potential mechanisms of MSCP2-induced macrophage activation were mainly through toll-like receptor 4 (TLR4), scavenger receptor type A (SRA) and glucan receptor (GR)-mediated signaling pathways. These results suggested that MSCP2 can be developed as a promising immunomodulatory agent in functional foods.

International Journal of Biological Macromolecules published new progress about Callerya speciosa. 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

Ding, Anzi published the artcileEffect of fatty acids on the flavor formation of fish sauce, Quality Control of 505-10-2, the main research area is Culter Carassius Ictalurus fatty acids flavor sauce.

An appropriate fish model helps track changes of lipid and fatty acid during fermentation Here we selected three freshwater fish (Culter alburnus, Carassius auratus and Ietalurus Punetaus) as the fermentative materials of fish sauce due to their significantly different contents of lipid and unsaturated fatty acid. The electronic nose showed that the flavor profiles of sauce samples prepared with different fish were dramatically different. A total of 71 volatile compounds of fish sauce were detected by solid-phase microextraction-gas chromatog.-mass spectrometry (SPME-GC/MS). Then nine key flavor compounds, including 3-methylbutanal, 3-methyl-1-butanol, 3-(methylthio)propanal, 1-octen-3-ol, phenylacetaldehyde, nonanal, di-Me trisulfide, decanal and hexanol, were screened based on odor activity values. According to correlation anal. between fatty acid profiles and fish sauce aroma, possible pathways of oleic acid (C18:1) and linoleic acid (C18:2) oxidation were suggested: oleic acid undergone the auto-oxidation to mainly form 10- hydroperoxide and 11- hydroperoxide, and (or) secondary form 8-hydroperoxide, then converted to nonanal, octanal and decanal; linoleic acid undergone the enzymic oxidation to form 10-L(S)-hydroperoxy-cis-9, trans-11-octadecadieuoic acid, then converted to 1-octen-3-ol.

LWT–Food Science and Technology published new progress about Carassius auratus. 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

Hao, Huili published the artcileStructural characterization and immunostimulatory activity of a novel polysaccharide from green alga Caulerpa racemosa var peltata, Safety of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Caulerpa galacturonic acid polysaccharide immunostimulant; Caulerpa racemosa var peltata; Immunostimulatory activity; Polysaccharide; Structural characteristics.

A novel water-soluble polysaccharide (named CRVP-1) was successfully obtained from Caulerpa racemosa var peltata by hot-water extraction, ethanol precipitation, and column chromatog. The structure of CRVP-1 was characterized by HPGPC, HPAEC-PAD, FT-IR, GC-MS and NMR. The structural anal. indicated that CRVP-1 possessed a sulfate content of 25.8% ± 0.7% and was a heteropolysaccharide with an average mol. weight of 29.68 kDa, and composed of mannose, galactose, glucose, galacturonic acid, and glucuronic acid with rates of 92.1%, 2.9%, 1.8%, 1.7% and 1.2%, resp., owning a backbone structure of (1-6)-linked a-D-Manp residues with (1-4)-linked a-D-Manp and (1-2)-linked a-D-Manp residues and side chain that was consisted of (1-4)-linked b-D-Galp residues. The immunostimulatory assay revealed that CRVP-1 had significant effects on the proliferation of macrophage, production of NO and secretion of cytokines (TNF-a, IL-1b and IL-6). These findings provide a scientific basis for further utilization of polysaccharides from C. racemosa var peltata.

International Journal of Biological Macromolecules published new progress about Caulerpa racemosa. 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, Safety of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts