Category: alcohols-buliding-blocks

Lu, Yunhao published the artcileBio-augmented effect of Bacillus amyloliquefaciens and Candida versatilis on microbial community and flavor metabolites during Chinese horse bean-chili-paste fermentation, Computed Properties of 505-10-2, the main research area is Bacillus Candida flavor metabolites horse beans fermentation China; Bio-augmented fermentation; Chinese horse bean-chili-paste; Enzymatic activities; Microbial diversity; Volatile compounds.

Chinese horse bean-chili-paste (CHCP), a fermented condiment in China, is traditionally manufactured through naturally spontaneous semi-solid fermentation procedures without intentionally inoculated microorganisms. The aim of this study was to investigate the effect on microbiota and quality variations during CHCP fermentation by inoculation of selected autochthonous microorganisms Bacillus amyloliquefaciens and Candida versatilis. The results showed that relative abundance of Bacillus in the samples inoculated with B. amyloliquefaciens were increased from about 0.6% to almost 25%, and the batches bio-augmented with C. versatilis exhibited clearly 0.7 Lg copies/g higher biomass than that of the other samples. By bio-augmentation, six enzyme activities, namely acid protease, leucine aminopeptidase, α-amylase, cellulose, β-glucosidase and esterase, were considerably enhanced. As a result, inoculation of these two strains exhibited significant effect on the volatile profiles of CHCP. B. amyloliquefaciens herein was found to contribute mainly to the accumulation of acids, sulfur-containing compounds and pyrazines, whereas C. versatilis was considerably associated with the formation of alcs., esters and phenols. This study proved that combination of B. amyloliquefaciens and C. versatilis could obtain more extensive aroma profiles, especially for the enrichment of miso-like and fruity flavors, which could provide a guideline for the tailored control of CHCP fermentation process.

International Journal of Food Microbiology published new progress about Acidity. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Computed Properties of 505-10-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lindsay, Angus published the artcileSensitivity to behavioral stress impacts disease pathogenesis in dystrophin-deficient mice, HPLC of Formula: 97-67-6, the main research area is behavioral stress mutation phenotype dystrophin; blood pressure; dystrophin; estrogen; hypothalamic pituitary adrenal axis; skeletal muscle.

Mutation to the gene encoding dystrophin can cause Duchenne muscular dystrophy (DMD) and increase the sensitivity to stress in vertebrate species, including the mdx mouse model of DMD. Behavioral stressors can exacerbate some dystrophinopathy phenotypes of mdx skeletal muscle and cause hypotension-induced death. However, we have discovered that a subpopulation of mdx mice present with a wildtype-like response to mild (forced downhill treadmill exercise) and moderate (scruff restraint) behavioral stressors. These stress-resistant mdx mice are more phys. active, capable of super-activating the hypothalamic-pituitary-adrenal and renin-angiotensin-aldosterone pathways following behavioral stress and they express greater levels of mineralocorticoid and glucocorticoid receptors in striated muscle relative to stress-sensitive mdx mice. Stress-resistant mdx mice also presented with a less severe striated muscle histopathol. and greater exercise and skeletal muscle oxidative capacity at rest. Most interestingly, female mdx mice were more phys. active following behavioral stressors compared to male mdx mice; a response abolished after ovariectomy and rescued with estradiol. We demonstrate that the response to behavioral stress greatly impacts disease severity in mdx mice suggesting the management of stress in patients with DMD be considered as a therapeutic approach to ameliorate disease progression.

FASEB Journal published new progress about Behavior. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, HPLC of Formula: 97-67-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Miranda, Bruna M. published the artcileA galactose-rich heteropolysaccharide extracted from “”jaboticaba”” (Plinia cauliflora) peels, Category: alcohols-buliding-blocks, the main research area is jaboticaba Plinia cauliflora galactose; Arabinogalactan; GC/MS chromatography; Relative viscosity; Rheology.

The objective of this work was to extract, identify and characterize a galactose-rich heteropolysaccharide (GH) from “”jaboticaba”” peel. The best conditions to extract the GH according to a 23 full-factorial expremental design were 90°C/30 min/pH 1.0, resulting in a 32.32% yield using lyophilized sample. The chem. structure analyzed by GC/MS and NMR spectra (HSQC/HSQC-TOCSY) showed that the main chain of GH consists of a (1→4) galactoside branched at carbon 3, containing galactose (67.21%), glucose (15.78%), arabinose (9.78%), rhamnose (2.26%) and traces of esterified and non-esterified uronic acids. Rheol studies revealed that GH suspensions behave as a Newtonian fluid, with calculated mol. mass of 1.48 x 105 Da. The abstract viscosity of 1% (w/v) aq suspension of GH decreased from 25 mPa s to 10 mPa s in NaCl and 7 mPa s in CaCl2, indicating the polyelectrolyte character of GH.

Carbohydrate Polymers published new progress about Behavior. 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, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shaikh, Kashif Mohd published the artcileMolecular profiling of an oleaginous trebouxiophycean alga Parachlorella kessleri subjected to nutrient deprivation for enhanced biofuel production, Application of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, the main research area is Parachlorella biofuel lipid metabolism photosynthesis; Biofuels; Metabolomics; Microalgae; Nutrient deprivation; Parachlorella kessleri.

Background: Decreasing fossil fuels and its impact on global warming have led to an increasing demand for its replacement by sustainable renewable biofuels. Microalgae may offer a potential feedstock for renewable biofuels capable of converting atm. CO2 to substantial biomass and valuable biofuels, which is of great importance for the food and energy industries. Parachlorella kessleri, a marine unicellular green alga belonging to class Trebouxiophyceae, accumulates large amount of lipids under nutrient-deprived conditions. The present study aims to understand the metabolic imprints in order to elucidate the physiol. mechanisms of lipid accumulations in this microalga under nutrient deprivation. Results: Mol. profiles were obtained using gas chromatog.-mass spectrometry (GC-MS) of P. kessleri subjected to nutrient deprivation. Relative quantities of more than 60 metabolites were systematically compared in all the three starvation conditions. Our results demonstrate that in lipid metabolism, the quantities of neutral lipids increased significantly followed by the decrease in other metabolites involved in photosynthesis, and nitrogen assimilation. Nitrogen starvation seems to trigger the triacylglycerol (TAG) accumulation rapidly, while the microalga seems to tolerate phosphorous limitation, hence increasing both biomass and lipid content. The metabolomic and lipidomic profiles have identified a few common metabolites such as citric acid and 2-ketoglutaric acid which play significant role in diverting flux towards acetyl-CoA leading to accumulation of neutral lipids, whereas other mols. such as trehalose involve in cell growth regulation, when subjected to nutrient deprivation. Conclusions: Understanding the entire system through qual. (untargeted) metabolome approach in P. kessleri has led to identification of relevant metabolites involved in the biosynthesis and degradation of precursor mols. that may have potential for biofuel production, aiming towards the vision of tomorrow’s bioenergy needs.

Biotechnology for Biofuels published new progress about Biofuels. 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

Nour, Mohamed published the artcileImprovement of CI engine combustion and performance running on ternary blends of higher alcohol (Pentanol and Octanol)/hydrous ethanol/diesel, Safety of n-Octanol, the main research area is CI engine diesel fuel blend higher alc hydrous ethanol.

Pentanol and Octanol are strong candidates to improve the blending stability of hydrous ethanol and diesel. Most of the available studies are limited to the stability assessment and properties characterization without combustion evaluation. In this study, the impact of ternary blends of pentanol/hydrous ethanol/diesel (Pe10E10D80) and octanol/hydrous ethanol/diesel (Oc10E10D80) on CI engine combustion and performance are investigated. The fuel characteristics are measured, and a thermogravimetric anal. is performed. A set of experiments are performed on a CI engine at a wide range of operating conditions. The experiments report that the peak cylinder pressures for Pe10E10D80 and Oc10E10D80 are lower than that of D100. The rate of heat release (RoHR) at premixed combustion phase is diminished but enhanced for diffusion combustion zone. Ignition delay and combustion duration increased for ternary blends. The BSEC and bsfc for Oc10E10D80 is lower than D100, but both for Pe10E10D80 are higher than D100. The BTE of Oc10E10D80 is higher than D100, but Pe10E10D80 has lower BTE. The smoke, NOx, CO and CO2 emissions are reduced by 73%, 33%, 83%, and 56%, resp. Pentanol and octanol addition to hydrous ethanol/diesel blend achieves better blending stability with improved engine performance and reduced emissions.

Fuel published new progress about Biofuels. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Safety of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Raffius, Thomas published the artcileLaser spectroscopic investigation of diesel-like jet structure using C8 oxygenates as the fuel, Recommanded Product: n-Octanol, the main research area is carbon oxygenate fuel laser spectroscopic diesel jet structure.

Di-Bu ether (DNBE) and n-octanol have very low sooting tendencies in diesel-like combustion, as demonstrated in previous engine studies. This finding is not fully understood for pure DNBE, because it has a very high cetane rating (∼100). In order to investigate the underlying mechanisms, the structure of diesel-type jets is analyzed by a number of optical diagnostics, such as spontaneous Raman scattering (SRS), laser-induced fluorescence (LIF), OH* luminescence imaging, Mie scattering, and shadowgraphy. Pure DNBE and a tailor-made blend of 50% DNBE and 50% n-octanol as well as neat n-heptane are used as the fuel in sep. experiments The jets are probed in a simulated engine-like environment in a high-pressure combustion vessel. In particular, the inner flame structure is analyzed by SRS and LIF. This yields information on the local temperature and the concentrations of O2, CO, and polycyclic aromatic hydrocarbons (PAH). For the first time, O2 is quant. detected in the core of a diesel-like flame by resonance-enhanced SRS. Thereby, air entrainment into the inner flame core is assessed. Results show that air entrainment is particularly strong for pure DNBE, explaining its high soot oxidation rate and overall low sooting tendency. High entrainment is primarily attributed to the low heat-release rate of DNBE, which is likely an effect of its high ignitability. Thus, it can be concluded that the high cetane rating of pure DNBE does not only lead to relatively poor pre-combustion mixture preparation and consequently considerable soot formation but seemingly also to particularly strong soot oxidation Moreover, the jet structure turns out to be very similar for the DNBE/n-octanol blend and neat n-heptane, indicating that the net effect of volatility and fuel oxygenation is weak.

Fuel published new progress about Biofuels. 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

Zhu, Yanli published the artcileHydrodeoxygenation of Octanoic Acid over Supported Ni and Mo Catalysts: Effect of Ni/Mo Ratio and Catalyst Recycling, Formula: C8H18O, the main research area is octanoic acid hydrodeoxygenation nickel molybdenum catalyst support recycling.

Hydrodeoxygenation of octanoic acid over supported NiMo bimetallic catalysts was investigated as a representative of carboxylic acid compounds in bio-oils. A series of MCM-41 supported Ni and Mo bimetal catalysts were prepared with the wetness impregnation method. The microstructural and physicochem. properties of the fresh and recovered bimetal catalysts were characterized by various methods such as X-ray diffraction (XRD), SEM (SEM) and XPS, etc.. The results show that the bulk NiO particles were well-uniformly dispersed on the surface of the bimetal catalyst, and Mo4+ was founded as the main valence of Mo inside solid. Under the optimal conditions, i. e. the reaction temperature of 270°C, reaction pressure of 3 MPa, and reaction time of 7 h, the 3Ni7Mo/MCM-41 sample exhibits selectivity to octane 72.6% with a high conversion of octanoic acid 96.1%. Only a slight decrease in catalytic activity was observed after reused for three times. Moreover, the recovered sample was easily regenerated only with simple calcination and deoxidization, but has the similar microstructure compared with the fresh one.

ChemistrySelect published new progress about Biofuels. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Han, Yinglei published the artcileTernary Phase Diagram of Water/Bio-Oil/Organic Solvent for Bio-Oil Fractionation, Synthetic Route of 111-87-5, the main research area is ternary phase diagram water biofuel organic solvent fractionation.

Separating bio-oil by fractionation with different chem. compositions is a critical step to refine these oils and obtain high-value products. Cold water precipitation of pyrolytic lignin from bio-oil is the most common approach used. However, the obtained aqueous phase from this method still contains phenols and is diluted and difficult to use. In this study, the use of liquid-liquid extraction with different solvents (1-butanol, Et acetate, 1-octanol, dichloromethane, toluene, and hexane) for the separation of targeted mols. (lignin oligomers, sugars, acetic acid) is explored. Ternary phase diagrams for the organic solvent/water/bio-oil are reported. The partition coefficient of compounds of interest (both light and heavy fractions) is reported for the liquid-liquid equilibrium zone. When using butanol as the solvent, the highest separation factor of total phenols over total sugars was observed Our results provide information to design L-L separation units with the capacity to selectively recover targeted mols. from pyrolysis oils.

Energy & Fuels published new progress about Biofuels. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Synthetic Route of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shenavaei Zare, Toktam published the artcileProduction of New Surfactant-free Microemulsion Biofuels: Phase Behavior and Nanostructure Identification, Computed Properties of 111-87-5, the main research area is surfactant free microemulsion Biofuels phase behavior nanostructure.

New surfactant-free microemulsion biofuels are synthesized and characterized in this work. Moringa and safflower plants have been used for providing the required oils because of their excellent resistance in dry and harsh environmental conditions. Me tert-Bu ether (MTBE), 1-heptanol, 1-octanol, oleic acid, 1,4-dioxane, and di-Bu ether have been used as biofuel additives. The obtained phase behavior results show that the microemulsion region of ternary phase diagrams in these systems decreases as follows: oleic acid > 1-octanol > 1-heptanol > MTBE > di-Bu ether >1,4-dioxane. The nanostructures formed in these types of ternary mixtures are investigated by conductivity, dynamic light scattering (DLS), and small-angle X-ray scattering (SAXS) techniques. Three different micro regions, including ethanol in oil (E/O), bicontinuous (B.C.), and oil in ethanol (O/E), have been recognized using elec. conductivity experiments along ethanol dilution lines. According to the presented results, the E/O region regarding the studied microemulsions is wider than the B.C. and O/E regions. Thus, the proposed formulation according to the reverse micelle microemulsion formation can be considered as a useful approach for biofuel production It is also shown that the kinematic viscosities and densities of the formulated biofuels in this article satisfy the approved biofuel standards

Energy & Fuels published new progress about Biofuels. 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

Billy, Yin Sing O. published the artcileThe use of non-nutritive and low-calorie sweeteners in 19,915 local and imported pre-packaged foods in Hong Kong, Product Details of C12H24O11, the main research area is nonnutritive lowcalorie sweetener prepackaged food Hong Kong; Hong Kong; intense sweeteners; low-calorie sweeteners; non-nutritive sweeteners; pre-packaged foods; sugar substitutes.

This study aims to examine the use of non-nutritive (NNSs) and low-calorie sweeteners (LCSs) in pre-packaged foods in Hong Kong and the differences in the number of NNSs/LCSs used between products from different regions. In a cross-sectional audit, the types of NNSs/LCSs used in 19,915 pre-packaged foods in Hong Kong were examined by searching the ingredients list of the included products for keywords related to 20 common NNSs/LCSs and their resp. E-numbers Prevalence of use of NNSs and LCSs, the co-presence of NNSs/LCSs and free sugar ingredients (FSI), and the number of NNSs/LCSs used in the included foods were computed. Pearson’s χ2 test was used to compare the total number of NNSs and/or LCSs used in food items from different regions. Sucralose (E955) was the most commonly used NNS (1.9%), followed by acesulfame K (E950, 1.6%). Sorbitol was the most commonly used LCS (2.9%). Overall, the use of LCSs was less common compared with NNSs (3.7% vs. 4.5%). The use of different types of NNSs varied substantially between food types. Notably, 20.2% of potato crisps and 15.2% of other crisps or extruded snacks contained at least one NNS and/or LCS. Co-presence of FSIs and NNSs/LCSs were most common in confectionery (15.7%) and snack foods (15.5%). Asian prepackaged foods were more likely to contain NNSs/LCSs (10.1%) compared with those from other regions. To conclude, NNSs/LCSs were used in a wide range of non-diet pre-packaged products which could be a public health concern due to their higher consumption frequencies than “”diet”” products.

Nutrients published new progress about Biscuits. 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, Product Details of C12H24O11.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts