Month: December 2022

Xu, Minwei published the artcileHS-SPME-GC-MS/olfactometry combined with chemometrics to assess the impact of germination on flavor attributes of chickpea, lentil, and yellow pea flours, Application of n-Octanol, the main research area is germination chickpea lentil pea; (E,E)-2,4-decadienal (PubChemCID: 5283349); (E,E)-2,4-nonadienal (PubChemCID: 5283339); 1-Hexanol (PubChemCID: 8103); 2-Pentyl-furan (PubChemCID: 19620); 3-Methyl-1-butanol (PubChemCID: 31260); Beany flavor; Chemometric; Germination; Gluten-free; Hexanal; Hexanal (PubChemCID: 6184); Pulse.

In this study, volatile component changes of germinated chickpea, lentil, and yellow pea flours over the course of 6 days germination were characterized by HS-SPME-GC-MS/O. In total, 124 volatile components were identified involving 19 odor active components being recorded by GC-O exclusively. Principal component anal. (PCA) and hierarchical cluster anal. (HCA) revealed that lentil and yellow pea flours had the similar aromatic attributes, while the decrease of beany flavor compounds along with the occurrence of unpleasant flavors was detected in chickpea flours upon germination. Six beany flavor markers, including hexanal, (E,E)-2,4-nonadienal, (E,E)-2,4-decadienal, 3-methyl-1-butanol, 1-hexanol, and 2-pentyl-furan, were employed to quantify beany flavor formation in the flours over the course of germination. The results suggested that no significant beany flavor formation or mitigation was appeared after 1 day of germination. The findings are crucial for tailing pulse germination process to enhance the macronutrients without increasing undesirable beany flavor.

Food Chemistry published new progress about Chickpea. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Katagiri, Takayuki published the artcileTrivalent metal ions promote the malic enzyme-catalyzed building of carbon-carbon bonds from CO2 and pyruvate, Recommanded Product: (S)-2-hydroxysuccinic acid, the main research area is malic enzyme carbon dioxide pyruvate aluminum iron ion carboxylation.

Malic enzyme (ME) from chicken liver (EC 1.1.1.40) is an enzyme that catalyzes the decarboxylation of malate into pyruvate and CO2 and the reverse reaction that introduces CO2 as a carboxy-group to pyruvate to form malate via oxaloacetate in the presence of natural co-enzyme NADP+/NADPH. Thus, ME is an attractive biocatalyst for building carbon-carbon bonds through the carboxylation of pyruvate with CO2. Since ME mainly catalyzes the decarboxylation of malate to produce pyruvate via oxaloacetate, it is necessary to devise ways to promote the carboxylation of pyruvate with CO2 to produce oxaloacetate based on the building of carbon-carbon bonds. Enhancing the carboxylation of pyruvate by the addition of metal ions with CO2 and using ME as a catalyst will lead to new insight into biocatalytic CO2 utilization research. The effect of adding divalent and trivalent metal ions to promote the ME-catalyzed building of carbon-carbon bonds through the carboxylation of pyruvate with CO2 was investigated. Specifically, it was found for the first time that the addition of trivalent aluminum and iron ions accelerates ME-catalyzed carboxylation of pyruvate with CO2. Moreover, it was found that a high concentration of aluminum ions (>100μM) and a low concentration of iron ions (<10μM) promote the ME-catalyzed carboxylation of pyruvate with CO2. New Journal of Chemistry published new progress about C-C bond. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Recommanded Product: (S)-2-hydroxysuccinic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shapira, Anna published the artcileTandem Mass Spectrometric Quantification of 93 Terpenoids in Cannabis Using Static Headspace Injections, Recommanded Product: rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, the main research area is Cannabis terpenoid GC quadrupole tandem MS.

The therapeutic effect of Cannabis largely depends on the content of its pharmacol. active secondary metabolites, mainly phytocannabinoids, flavonoids, and terpenoids. Recent studies suggest there are therapeutic effects of specific terpenoids as well as synergistic effects with other active compounds in the plant. Although Cannabis contains an overwhelming milieu of terpenoids, only a limited number are currently reported and used for metabolic anal. of Cannabis chemovars. In this study, we report the development and validation of a method for simultaneous quantification of 93 terpenoids in Cannabis air-dried inflorescences and extracts This method employs the full evaporation technique via a static headspace sampler, followed by gas chromatog.-mass spectrometry (SHS-GC/MS/MS). In the validation process, spiked terpenoids were quantified with acceptable repeatability, reproducibility, sensitivity, and accuracy. Three medical Cannabis chemovars were used to study the effect of sample preparation and extraction methods on terpenoid profiles. This method was further applied for studying the terpenoid profiles of 16 different chemovars acquired at different dates. Our results demonstrate that sample preparation methods may significantly impact the chem. fingerprint compared to the nontreated Cannabis. This emphasizes the importance of performing SHS extraction in order to study the natural terpenoid contents of chemovars. We also concluded that most inflorescences expressed relatively unique terpenoid profiles for the most pronounced terpenoids, even when sampled at different dates, although absolute concentrations may vary due to aging. The suggested method offers an ideal tool for terpenoid profiling of Cannabis and sets the scene for more comprehensive works in the future.

Analytical Chemistry (Washington, DC, United States) published new progress about Cannabis. 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, Recommanded Product: rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nadian, Narges published the artcileTextural and sensory characteristics of sugar-free biscuit formulated with quinoa flour, isomalt, and maltodextrin, Application In Synthesis of 64519-82-0, the main research area is optimization quinoa response surface method sugar free biscuit; optimization; quinoa; response surface method; sugar ‐free biscuit.

A low-calorie biscuit formulation containing quinoa flour (cultivars TTKK), isomalt, and maltodextrin was optimized using response surface methodol. Optimized samples were evaluated in terms of total phenolic compounds (TPC), sensory properties, and nutritional value while samples containing only wheat flour (Pishgam var.) and sucrose were used as control. Morphol. of isolated starch from quinoa was also investigated. The results showed that with increasing amounts of quinoa, isomalt, and maltodextrin Δ E and Browning index increased, whereas hardness and L values decreased. The formulation containing 25% quinoa flour, 3.5% maltodextrin, and 10% isomalt was found to be optimal with an overall desirability value of 0.95. The sensory evaluation showed that replacement of wheat flour with 25 g/100 g quinoa flour in biscuits was acceptable. TPC of the optimal biscuit (1,180.34 ± 0.02 μg GAE/g) was higher than that of the control sample (729.95 ± 0.007 μg GAE/g). In addition, the optimized biscuit had more protein (8.36 ± 0.035%) and dietary fiber (2.14± 0.035%) content compared with the control sample (7.01 ± 0.007% and 1.66 ± 0.028%, resp.). The consumption of 100 g of optimized quinoa biscuits supplies the daily requirement of Fe, Mg, Ca, and Zn at 2.43%, 44.81%, 19.46% and 1.12%, resp.

Food Science & Nutrition (Hoboken, NJ, United States) 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, Application In Synthesis of 64519-82-0.

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

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

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

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

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

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