Tag: 100-200

Effect of Spanish-style processing steps and inoculation with Lactobacillus pentosus starter culture on the volatile composition of cv. Manzanilla green olives was written by de Castro, Antonio;Sanchez, Antonio Higinio;Cortes-Delgado, Amparo;Lopez-Lopez, Antonio;Montano, Alfredo. And the article was included in Food Chemistry in 2019.Category: ethers-buliding-blocks The following contents are mentioned in the article:

The effects of the main steps of Spanish-style processing (alk. treatment and fermentation) on the volatile composition of cv. Manzanilla green olives were studied. Both spontaneous and controlled fermentations were considered. In the latter case, a Lactobacillus pentosus strain from green olive fermentation brine was used as starter culture. The volatile profile was determined by headspace solid-phase microextraction (HS-SPME) combined with gas chromatog.-mass spectrometry (GC-MS). Most of the volatile compounds detected in fresh olives decreased or were undetected after alk. treatment, while several compounds (mostly acetic acid, 2-methylbutanoic acid, and ethanol) were formed as a result of this treatment. Over 50 new volatile components, mostly esters and phenols, appeared as a result of fermentation The most outstanding finding was a considerable increase in 4-Et phenol (almost 100-fold increase) in inoculated olives compared to the uninoculated product. However, a sensory panel did not find significant differences in odor perception. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Category: ethers-buliding-blocks).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Study on the change of aroma compounds in hops with different drying methods was written by Xia, Na;Reyanggu, Abula;Munire, Abudukelim. And the article was included in Shipin Gongye Keji in 2013.Synthetic Route of C10H22O3 The following contents are mentioned in the article:

Effects of drying methods on volatile components of hops were determined by solid phase microextraction-gas chromatog.-mass spectrometry (SPME-GC-MS). There were 41 kinds of volatile components identified in fresh hops, including nine kinds of alcs., three kinds of aldehydes, seven kinds of esters, five kinds of ketones, three kinds of alkenes, seven kinds of organic acid, seven kinds of other ingredients, and the olefins accounted for 58.54% of the total relative content. Compared with fresh hops, there was an increase of two kinds of components in hops of factory hot air drying, accounted for 0.57% of the total peak area, and a decrease of eleven kinds, accounted for 3.69% of the total peak area, there was an increase of two kinds of components in hops of ambient air drying, accounted for 0.53% of the total peak area, and a decrease of eight kinds, accounted for 1.5% of the total peak area, the volatile constituents species and quantity were similar to that of fresh hops, and air drying could reduce the loss of hops volatile components. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Synthetic Route of C10H22O3).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Synthetic Route of C10H22O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Bacteriorhodopsin O-state photocycle kinetics: a surfactant study was written by Chu, Li-Kang;El-Sayed, Mostafa A.. And the article was included in Photochemistry and Photobiology in 2010.Safety of 2-(2-(Hexyloxy)ethoxy)ethanol The following contents are mentioned in the article:

The spectroscopy and dynamics of interaction between the O intermediate of bacteriorhodopsin (bR) and several surfactants (cetrimonium bromide [CTAB], sodium dodecyl sulfate [SDS] and diethylene glycol mono-n-hexyl ether [C6E2]) were investigated using steady-state UV-VIS spectrometry, CD spectroscopy and time-resolved absorption techniques. The steady-state spectral results show that bR can retain its trimeric state without severe damage in the molar concentration ratio of C6E2/bR ranging up to 4000. Time-resolved observations indicate that the rise and decay rates and transient populations of the O state can be increased in the presence of nonionic surfactant C6E2; however, these studies indicate the opposite phenomenon in the presence of the ionic surfactants CTAB and SDS. The observed 40% enhancement in the transient population of the O intermediate state that results from treatment of C6E2 is proposed to result from an expanding bR structure, which leads to more effective proton pumping efficiency in the photosynthetic system of bR. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Safety of 2-(2-(Hexyloxy)ethoxy)ethanol).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Safety of 2-(2-(Hexyloxy)ethoxy)ethanol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Methanolysis Fractionation and Catalytic Conversion of Poplar Wood toward Methyl Levulinate, Phenolics, and Glucose was written by Zhai, Qiaolong;Hse, Chung-yun;Long, Feng;Shupe, Todd F.;Wang, Fei;Jiang, Jianchun;Xu, Junming. And the article was included in Journal of Agricultural and Food Chemistry in 2019.Synthetic Route of C9H12O3 The following contents are mentioned in the article:

In the present study, methanolysis of poplar biomass was conducted for the selective transformation of hemicellulose and lignin, which leads to Me glycosides (mainly C5 glycosides) and lignin fragments in the liquefied products that can be separated according to their difference in hydrophilicity. The distribution of Me glycosides and delignification was dependent on the presence of acid catalysts and reaction temperatures The obtained lignin fraction was separated into solid lignin fragments and liquid lignin oil according to their mol. weight distribution. Subsequently, directional conversion of Me C5 glycosides into Me levulinate was performed with dimethoxymethane/methanol as the cosolvent. A yield of 12-30% of Me levulinate yield (based on the Me glycoside) was achieved under these conditions. The remaining cellulose-rich substrate showed enhanced susceptibility to enzymic hydrolysis, resulting in a yield of glucose of above 70%. Overall, the described strategy shows practical implications for the effective valorization of biomass. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Synthetic Route of C9H12O3).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Synthetic Route of C9H12O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Glycosylated simple phenolic profiling of food tannins using high resolution mass spectrometry (Q-Orbitrap) was written by Barnaba, C.;Larcher, R.;Nardin, T.;Dellacassa, E.;Nicolini, G.. And the article was included in Food Chemistry in 2018.Computed Properties of C9H12O3 The following contents are mentioned in the article:

Tannins are polyphenolic compounds extensively present in plants and used by food industry as processing aids. Due to the heterogeneity of plant sources, actions involved in food processing and tannin com. costs can be different. In the last years different approaches aimed at correctly identifying the tannin botanical origin have been developed, in order to satisfy the industry’s request to verify product labels. This work aimed to define the glycosidic simple phenolic profile of a large selection of monovarietal com. tannins of different origin, using a high-resolution untargeted approach. Using accurate mass, isotopic pattern and MS/MS fragmentation, 167 precursors, 89 as monoglycosylated and 78 as diglycosylated derivatives were tentatively identified in tannins, validating the untargeted approach with 3 custom-synthesized glycosidic precursors. Almost all tannin botanical varieties were shown to be characterized by a specific glycosylated phenolic profile, providing possible tools for tannin classification in the case of glycosylphenol standard availability. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Computed Properties of C9H12O3).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Computed Properties of C9H12O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Effect of Solvent, Role of Formic Acid and Rh/C Catalyst for the Efficient Liquefaction of Lignin was written by Matsagar, Babasaheb M.;Wang, Zheng-Yen;Sakdaronnarong, Chularat;Chen, Season S.;Tsang, Daniel C. W.;Wu, Kevin C.-W.. And the article was included in ChemCatChem in 2019.Application of 2380-78-1 The following contents are mentioned in the article:

We demonstrate highly efficient liquefaction of alkali lignin with a very high yield of THF-soluble bio-oil (91.5 wt %) using formic acid (FA) and Rh/C catalyst under relatively mild reaction conditions (250 °C, 6 h) in EtOH-H₂O co-solvent system. The monomeric products are identified in which alkyl guaiacols accounts for the main proportion. The role of FA was not only used as a liquid-phase in-situ hydrogen source but also acts as organic acid which can catalyze the hydrolysis reaction of -C-O-C ether bonds of lignin. Moreover, in the present study, the role of Rh/C and FA is demonstrated for the liquefaction of lignin. The replacement of pure H₂ gas by the liquid-phase FA (hydrogen source) can effectively prevent the char formation. The utilization of Rh/C catalyst helps for the conversion of alkenyl guaiacols to alkyl guaiacols suggesting the hydrogenation of phenolic monomers and further cleavage by hydrogenation results in the formation of bio-oil with lower mol. weight (Mn=466 g mol^-1) as well as lower O/C ratio (0.26). This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Application of 2380-78-1).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Application of 2380-78-1

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Solid-phase synthesis of curcumin mimics and their anticancer activity against human pancreatic, prostate, and colorectal cancer cell lines was written by Romanucci, Valeria;Giordano, Maddalena;Pagano, Rita;Agarwal, Chapla;Agarwal, Rajesh;Zarrelli, Armando;Di Fabio, Giovanni. And the article was included in Bioorganic & Medicinal Chemistry in 2021.Quality Control of 4-Hydroxy-3-methoxyphenethanol The following contents are mentioned in the article:

Curcumin is a bioactive natural compound with a wide range of pharmacol. properties, including antitumor activity; however, its clin. application has been limited because of its low solubility, stability, and bioavailability. In this study, a solid phase approach was proposed for the combinatorial synthesis of a mini library of the mimics of curcumin in good purity and yield. The non-effective findings in pancreatic cancer cells switched to strong growth inhibition and cell death efficacy for PC3 prostate cancer cells, and mimic 9, in which tyrosol (TYR) and homovanillyl alc. (HVA) units were linked by a phosphodiester bond, was quite effective not only in cell growth inhibition but also in causing strong cell death under the study conditions and treatments that were not effective in PANC1 cells. The results got more exciting when we also consider the findings in SW480 human colorectal carcinoma cell line, where the growth inhibitor effects were more in line with that of the PC3 cells, but the lack of cell death effect was more in line with the PANC1 cells. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Quality Control of 4-Hydroxy-3-methoxyphenethanol).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Quality Control of 4-Hydroxy-3-methoxyphenethanol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Modulating Aβ aggregation by tyrosol-based ligands: The crucial role of the catechol moiety was written by Romanucci, Valeria;Garcia-Vinuales, Sara;Tempra, Carmelo;Bernini, Roberta;Zarrelli, Armando;Lolicato, Fabio;Milardi, Danilo;Di Fabio, Giovanni. And the article was included in Biophysical Chemistry in 2020.Safety of 4-Hydroxy-3-methoxyphenethanol The following contents are mentioned in the article:

The abnormal deposition of Aβ amyloid deposits in the brain is a hallmark of Alzheimer’s disease (AD). Based on this evidence, many current therapeutic approaches focus on the development of small mols. halting Aβ aggregation. However, due to the temporary and elusive structures of amyloid assemblies, the rational design of aggregation inhibitors remains a challenging task. Here we combine ThT assays and MD simulations to study Aβ aggregation in the presence of the natural compounds tyrosol (TY), 3-hydroxytyrosol (HDT), and 3-methoxytyrosol (homovanillyl alc. HVA). We show that albeit HDT is a potent inhibitor of amyloid growth, TY and HVA catalyze fibril formation. An inspection of MD simulations trajectories revealed that the different effects of these three mols. on Aβ_1-40 aggregation are ascribable to their capacity to arrange H-bonds network between the ligand (position C-3) and the peptide (Glu22). We believe that our results may contribute to the design of more effective and safe small mols. able to contrast pathogenic amyloid aggregation. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Safety of 4-Hydroxy-3-methoxyphenethanol).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Safety of 4-Hydroxy-3-methoxyphenethanol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Catalytic valorization of lignin to liquid fuels over solid acid catalyst assisted by microwave heating was written by Zhou, Minghao;Sharma, Brajendra K.;Li, Jing;Zhao, Jiaping;Xu, Junming;Jiang, Jianchun. And the article was included in Fuel in 2019.Computed Properties of C9H12O3 The following contents are mentioned in the article:

In this study, three types of lignin feedstocks were introduced into the microwave assisted depolymerization process over solid acid catalysts. The effects of lignin structures, solvents and catalysts were investigated to improve bio-oil yields and properties. A common phenomenon was observed that the highest bio-oil yields were all obtained in methanol under optimal conditions with microwave heating. The highest bio-oil yield from alk. lignin, dealkaline lignin and lignosulfonate was 57.4%, 82.9% and 70.9% resp., all obtained in methanol. The promotional effect of methanol over HSZ-640 (or HSZ-660) in the depolymerization process was confirmed due to the higher polarity of methanol, and higher acidity of catalysts. The promotional effect on the elemental composition and HHV of bio-oil was observed, finding that HSZ-640 (or HSZ-660) exhibited to be effective to convert lignin to liquid fuels with higher HHV, and the HHV of obtained bio-oil increased to about 28-32 MJ/kg, confirming that hydrogenation/hydrodeoxygenation took place during the depolymerization This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Computed Properties of C9H12O3).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Computed Properties of C9H12O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Densities, excess molar volumes, speeds of sound, and isothermal compressibilities for 2-(2-hexyloxyethoxy)ethanol + n-alkylamine at temperatures between 288.15 K and 308.15 K was written by Pal, Amalendu;Gaba, Rekha;Sharma, Sanjay. And the article was included in Journal of Chemical & Engineering Data in 2008.Electric Literature of C10H22O3 The following contents are mentioned in the article:

The densities, ρ, and the speeds of sound, u, for binary liquid mixtures containing 2-(2-hexyloxyethoxy)ethanol (C₆E₂) and n-butylamine (BA), dibutylamine (DBA), and tributylamine (TBA) have been measured as a function of composition using a vibrating tube densimeter and sound analyzer Anton-Paar model DSA-5000 at temperatures (288.15, 293.15, 298.15, 303.15, and 308.15) K and atm. pressure. The ρ and u values were used to calculate excess molar volumes, V^E_m, and excess molar isentropic compressibility, K^E_S,m, resp. The V^E_m and K^E_S,m values are shown to be neg. for all the mixtures over the entire composition range. Both V^E_m and K^E_S,m become more neg. for all the mixtures with the rise of temperature The change of V^E_m and K^E_S,m with composition and temperature are discussed with a view to understand mol. interactions present in alkoxyethanol-alkylamine mixtures This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Electric Literature of C10H22O3).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Electric Literature of C10H22O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem