Category: alcohols-buliding-blocks

Klacsova, Maria published the artcileThermodynamic and structural study of DMPC-alkanol systems, Quality Control of 111-87-5, the main research area is thermodn structural property dimyristoylphosphatidylcholine alkanol system DSC.

The thermodn. and structural behaviors of lamellar dimyristoylphosphatidylcholine-alkanol (abbreviation DMPC-CnOH, n = 8-18 is the even number of carbons in the alkyl chain) systems were studied by using DSC and SAXD/WAXD methods at a 0-0.8 CnOH : DMPC molar ratio range. Up to n ≤ 10 a significant biphasic effect depending on the main transition temperature tm on the CnOH concentration was observed Two breakpoints were revealed: turning point (TP), corresponding to the min., and threshold concentration (cT), corresponding to the end of the biphasic tendency. These breakpoints were also observed in the alkanol concentration dependent change in the enthalpy of the main transition ΔHm. In the case of CnOHs with n > 10 we propose a marked shift of TP and cT to very low concentrations; consequently, only increase of tm is observed A partial phase diagram was constructed for a pseudo-binary DMPC-C12OH system. We suggest a fluid-fluid immiscibility of the DMPC-C12OH system above cT with a consequent formation of domains with different C12OH contents. At a constant CnOH concentration, the effects of CnOHs on ΔHm and bilayer repeat distance were found to depend predominantly on the mismatch between CnOH and lipid chain lengths. Observed effects are suggested to be underlined by a counterbalancing effect of interchain van der Waals interactions and head-group repulsion.

Physical Chemistry Chemical Physics published new progress about Bilayer films. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Quality Control of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Almasi, Mohammad published the artcileDensities and Viscosities of Binary Mixtures Containing Methyl Isobutyl Ketone and (C6-C10) 1-Alkanol, Category: alcohols-buliding-blocks, the main research area is density viscosity solubility methyl isobutyl ketone alkanol binary mixture.

In the present study, to identify the governing intermol. interactions in the binary mixtures of Me iso-Bu ketone (MIBK) and 1-alkanols (1-hexanol up to 1-decanol), exptl. values of d. and viscosity at temperatures (293.15 to 323.15 K) were reported. Excess molar volumes (VmE) and viscosity deviations (Δη) for mentioned binary mixtures were calculated and correlated by the Redlich-Kister polynomial expansions. It was found that increasing the alkyl chain of alc. boosts the strength of intermol. forces. Also, to obtain more information about the governing forces in the binary mixtures, values of Hansen solubility parameter distance between two mols., Ra, were calculated, and based on the obtained results, the tendency of alc. to dissolve in the MIBK media was discussed.

Journal of Chemical & Engineering Data published new progress about Binary mixtures, liquid. 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

Almasi, Mohammad published the artcileMeasurement of the Density and Viscosity of Diisopropyl Ether and 1-Alkanol Mixtures at Various Temperatures, Related Products of alcohols-buliding-blocks, the main research area is density viscosity diisopropyl ether binary mixture alkanol pentanol decanol.

The current study was aimed to investigate intermol. forces in six binary associating systems containing diisopropyl ether (DIPE) and normal alcs. (1-pentanol to 1-decanol) at 293.15-323.15 K. The d. and viscosity of binary fluids were measured, and excess functions and partial volumes were calculated Excess volumes and deviation in the viscosity are neg. for all the above solutions Intermol. forces in mixtures are adjusted by mol. packing, dispersion forces, and hydrogen bonding. According to the findings, lengthening the alc. chain increases intermol. forces between mols. of different types. Most d. and viscosity values are new and have not been reported in scientific papers yet.

Journal of Chemical & Engineering Data published new progress about Binary mixtures, liquid. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Belleggia, Luca published the artcileUnravelling microbial populations and volatile organic compounds of artisan fermented liver sausages manufactured in Central Italy, Product Details of C4H10OS, the main research area is artisan liver sausage fermentation volatile organic compound microbial population; Debaryomyces hansenii; Latilactobacillus sakei; Liver; Metataxonomic analysis; Traditional product.

The aim of the present study was to obtain information on the occurrence of bacteria and eumycetes in ready-to-eat fermented liver sausages manufactured by 20 artisan producers located in the Marche Region (Italy). To this end, culture-dependent analyses and metataxonomic sequencing were carried out. Physico-chem. parameters and volatilome of the fermented liver sausages were also studied. Finally, the presence of hepatitis E virus (HEV) was also assessed via real-time-RT-(q)PCR assays. Active microbial populations mainly represented by lactic acid bacteria, enterococci, coagulase-neg. cocci, and eumycetes were detected. Enterobacteriaceae, Pseudomonadaceae, and sulfite-reducing anaerobes were not detected in most of the samples. Latilactobacillus sakei dominated in all the analyzed samples, reaching abundances up to 80%. Staphylococcus xylosus and Staphylococcus equorum were also detected. Among minority bacterial taxa, Weissella spp., Leuconostoc spp., Macrococcus caseolyticus, Brochothrix thermosphacta, Staphylococcus succinus, Lactobacillus coryniformis, Lactiplantibacillus plantarum, Lactococcus garviae, Psychrobacter spp., and Carnobacterium viridans were detected. The mycobiota was mainly composed by Debaryomyces hansenii that was present in all samples at the highest frequency. Among minority fungal taxa, Aspergillus spp., Penicillium spp., Kurtzmaniella zeylanoides, Candida spp., Yamadazyma spp., Scopulariopsis spp., Yarrowia spp., and Starmerella spp. were detected. Interestingly, associations between some taxa and some physico-chem. parameters were also discovered. The absence of HEV in all the samples attested a high level of safety. Finally, most of the VOCs detected in the analyzed fermented liver sausages belonged to six classes as: terpenoids, aldehydes, ketones, alcs., esters, and acids. Nitrogen compounds, sulfur compounds, phenols, hydrocarbons, lactones, furans, and aromatic hydrocarbons were also identified. Several significant relationships were observed between mycobiota and VOCs.

Food Research International published new progress about Alcohols Role: ANT (Analyte), FFD (Food or Feed Use), ANST (Analytical Study), BIOL (Biological Study), USES (Uses). 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

Lin, Li-Yun published the artcileVolatile Variation Theobroma cacao Malvaceae L. Beans Cultivated in Taiwan Affected by Processing via Fermentation and Roasting, Synthetic Route of 505-10-2, the main research area is Theobroma cacao Malvaceae bean fermentation roasting processing volatile variation; amino acids; cocoa bean flavors; fats and fatty acids; fermentation; pyrazine and esters; roasting; triacylglycerols; volatile changes.

After being harvested, cacao beans are usually subjected to very complex processes in order to improve their chem. and phys. characteristics, like tastefulness with chocolate characteristic flavors. The traditional process consists of three major processing stages: fermentation, drying, and roasting, while most of the fermentation is carried out by an on-farm in-box process. In Taiwan, we have two major cocoa beans, the red and the yellow. We proposed that the major factor affecting the variation in tastes and colors in the finished cocoa might be the difference between cultivars. To uncover this, we examined the effect of the three major processes including fermentation, drying and roasting on these two cocoa beans. Results indicated that the two cultivars really behaved differently (despite before or after processing with fermentation, drying, and roasting) with respect to the patterns of fatty acids (palmitic, stearic, oleic, and arachidonic); triacylglycerols:1,2,3-trioleoyl-glycerol (OOO); 1-stearoyl-2,3-oleoyl-glycerol (SOO); 1-stearoyl-sn-2-oleoyl-3-arachidoyl- glycerol (SOA); 1,3-distearyol-sn-2-oleoyl-glycerol (SOS); organic acids (citric, tartaric, acetic, and malic); soluble sugars (glucose and fructose); amino acids; total phenolics; total flavonoids; and volatiles. Our findings suggest that to choose specific processing conditions for each specific cocoa genotype is the crucial point of processing cocoa with consistent taste and color.

Molecules published new progress about Alcohols Role: ANT (Analyte), FFD (Food or Feed Use), ANST (Analytical Study), BIOL (Biological Study), USES (Uses). 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Synthetic Route of 505-10-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Balthazar, Celso F. published the artcileEffect of probiotic Minas Frescal cheese on the volatile compounds profile and metabolic profile assessed by nuclear magnetic resonance spectroscopy and chemometric tools, Application of 3-Pentanol, the main research area is cheese probiotics volatile compound metabolic profile NMR spectroscopy chemometrics; Lacticaseibacillus casei 01; amino acid; chemometrics; fresh cheese; probiotic.

This study aimed to evaluate the effect of Lacticaseibacillus casei 01 as a probiotic culture on the production of volatile organic compounds and metabolic profile of Minas Frescal cheese. Lactose (α-lactose and β-lactose), fatty acids (unsaturated and saturated), citric acid, tryptophan, and benzoic acid were the main compounds Compared with the control cheese, probiotic cheese was characterized by the highest concentration of tryptophan and presented a higher number of volatile acids. The control cheese was characterized by the highest concentration of benzoic acid and fatty acids, resulting in a higher number of volatile alcs. and esters. No differences were observed for α-lactose, β-lactose, and citric acid contents. A clear separation of probiotic and control Minas Frescal cheese was obtained using 1H NMR spectra, demonstrating that the addition of probiotic culture altered the metabolic profile of Minas Frescal cheese. Overall, the findings suggested that the addition of probiotic culture promoted the proteolysis in the fresh cheeses, decreased the lipolysis, and altered the volatile compounds Furthermore, NMR spectroscopy coupled to chemometrics tools could be used to differentiate probiotic and conventional cheeses.

Journal of Dairy Science published new progress about Alcohols Role: ANT (Analyte), FFD (Food or Feed Use), ANST (Analytical Study), BIOL (Biological Study), USES (Uses). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Application of 3-Pentanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hikawa, Hidemasa published the artcileA borrowing hydrogen methodology: palladium-catalyzed dehydrative N-benzylation of 2-aminopyridines in water, Name: (4-Butoxyphenyl)methanol, the main research area is benzyl aminopyridine green preparation KIE; aminopyridine benzyl alc dehydrative monobenzylation palladium catalyst base free.

A greener borrowing hydrogen methodol. using the π-benzylpalladium system, which offered an efficient and environmentally friendly preparation of N-benzyl aminopyridines I [R1 = H, 5-F, 3-Me, etc.; R2 = H, 3-Me, 4-t-BuO, etc.; R3 = H, Me] via dehydrative N-monobenzylation of 2-aminopyridines with benzylic alcs. in the absence of base was demonstrated. The crossover experiment using benzyl-α,α-d2 alc. and 3-methylbenzyl alc. afforded H/D scrambled products, suggesting that the dehydrative N-benzylation in the catalytic system involved a borrowing hydrogen pathway. KIE experiments showed that C-H bond cleavage at the benzylic position of benzyl alc. was involved in the rate-determining step (KIE = 2.9). This simple base-free protocol could be achieved under mild conditions in an atom-economic process, affording the desired products in moderate to excellent yields.

Green Chemistry published new progress about Benzylation. 6214-45-5 belongs to class alcohols-buliding-blocks, name is (4-Butoxyphenyl)methanol, and the molecular formula is C11H16O2, Name: (4-Butoxyphenyl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Abolghasemi, Reza published the artcileTranscriptome architecture reveals genetic networks of bolting regulation in spinach, SDS of cas: 59-23-4, the main research area is transcriptome architecture genetic network bolting regulation Spinacia; Bolting; Flowering time; RNA-Seq; Spinach.

Bolting refers to the early flowering stem production on agricultural and horticultural crops before harvesting. Indeed, bolting is an event induced by the coordinated effects of various environmental factors and endogenous genetic components, which cause a large reduction in the quality and productivity of vegetable crops like spinach. However, little is known about the signaling pathways and mol. functions involved in bolting mechanisms in spinach. The genetic information regarding the transition from vegetative growth to the reproductive stage in spinach would represent an advantage to regulate bolting time and improvement of resistant cultivars to minimize performance loss. To investigate the key genes and their genetic networks controlling spinach bolting, we performed RNA-seq anal. on early bolting accession Kashan and late-bolting accession Viroflay at both vegetative and reproductive stages and found a significant number of differentially expressed genes (DEGs) ranging from 195 to 1230 in different comparisons. These genes were mainly associated with the signaling pathways of vernalization, photoperiod/circadian clock, gibberellin, autonomous, and aging pathways. Gene ontol. anal. uncovered terms associated with carbohydrate metabolism, and detailed anal. of expression patterns for genes of Fructose-1, 6-bisphosphate aldolase, TREHALOSE-6-PHOSPHATE SYNTHASE 1, FLOWERING PROMOTING FACTOR 1, EARLY FLOWERING, GIGANTEA, and MADS-box proteins revealed their potential roles in the initiating or delaying of bolting. This study is the first report on identifying bolting and flowering-related genes based on transcriptome sequencing in spinach, which provides insight into bolting control and can be useful for mol. breeding programs and further study in the regulation of the genetic mechanisms related to bolting in other vegetable crops.

BMC Plant Biology published new progress about Carbohydrates Role: BSU (Biological Study, Unclassified), BIOL (Biological Study) (metabolism). 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, SDS of cas: 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

dos Santos, Anai L. published the artcileAnalysis of the seasonal variation in chemical profile of Piper glabratum Kunth essential oils using GCxGC/qMS and their antioxidant and antifungal activities, Related Products of alcohols-buliding-blocks, the main research area is Piper essential oil antioxidant antifungal seasonal variation.

Piper glabratum is a plant native from South America, which has been little studied, despite its use in folk medicine. In this study, chem. composition, antioxidant and antifungal activities of essential oils (EOs) from leaves of P. glabratum were investigated. The influence of seasonality on its chem. composition was also evaluated. The chem. characterization was performed by twodimensional gas chromatog. coupled with quadrupole mass spectrometry (GC×GC/qMS). Altogether, 199 compounds were identified in the EOs and their composition varied during the seasonal cycle. The main compounds found were sesquiterpenes and their oxygenated analogs. EOs showed antioxidant activity, measured by 2,2-diphenyl-1-picrylhydrazyl-DPPH (from 28.1 to 33.4 μg mL-1) and β-carotene assays (from 57.4 to 66.4%), and inhibitory action against C. albicans. The oils provided expressive properties; however, the yield of EO from winter was not enough for activities assays, remarking the influence of the seasonality on the biol. activities of this plant.

Journal of the Brazilian Chemical Society published new progress about Fungicides. 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, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Thiyagarajan, Subramanian published the artcileRuthenium-Catalyzed α-Alkylation of Ketones Using Secondary Alcohols to β-Disubstituted Ketones, Application In Synthesis of 584-02-1, the main research area is Ruthenium pincer catalyzed alkylation ketone secondary alc.

An assortment of aromatic ketones was successfully functionalized with a variety of unactivated secondary alcs. that serve as alkylating agents, providing β-disubstituted ketone products in good to excellent yields. Remarkably, challenging substrates such as simple acetophenone derivatives are effectively alkylated under this ruthenium catalysis. The substituted cyclohexanol compounds displayed product-induced diastereoselectivity. Mechanistic studies indicate the involvement of the hydrogen-borrowing pathway in these alkylation reactions. Notably, this selective and catalytic C-C bond-forming reaction requires only a minimal load of catalyst and base and produces H2O as the only byproduct, making this protocol attractive and environmentally benign.

Organic Letters published new progress about Alkylation catalysts. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Application In Synthesis of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts