Tag: M.W=50-100

Fang, X. published the artcileCharacteristics of volatile flavor components in traditional fermented yak milk produced in different ecoregions of the Qinghai-Tibetan plateau, Category: alcohols-buliding-blocks, the main research area is traditional fermented yak milk volatile flavor component; Qinghai-Tibetan plateau; traditional fermented yak milk; volatile flavor component; yak.

The volatile flavor substances in traditional fermented yak milk samples collected from 5 ecoregions (A: coniferous forests and grasslands of the Qilian Qingdong Mountains; B: alpine grasslands surrounding the lakes in the Qiangtang Plateau; C: alpine shrubs and meadows of the Guoluo-Nagqu Highlands; D: coniferous forests along the alpine valley in East Tibet; E: shrubs and grasslands along the alpine valley in South Tibet) of the Qinghai-Tibetan plateau were comparatively analyzed. The relative percentage composition of volatile flavor substances varied among the different ecoregions. In samples collected from region E, more than 50% of the volatile flavor compounds were esters comprising mainly Bu acetate, Bu butyrate, and Et octanoate, and a considerable proportion of acetoin was found in samples from regions B and E. Greater proportions of 2-heptanone and 2-nonanone were observed in samples collected from regions A, C, and D compared with regions B and E.

Journal of Dairy Science published new progress about Alcohols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yu, Haiyan published the artcileCharacterization of the volatile profile of Chinese rice wine by comprehensive two-dimensional gas chromatography coupled to quadrupole mass spectrometry, SDS of cas: 584-02-1, the main research area is Chinese rice wine volatile profile 2D GC MS; Chinese rice wine; comprehensive two-dimensional gas chromatography coupled to quadrupole mass spectrometry; surrogate odor activity value; volatile compounds.

BACKGROUND : Chinese rice wine (CRW) is a kind of traditional fermentation wine in China. Aged CRW is more popular among consumers owing to its harmonious and pleasant flavor. The volatile profile of CRW has been extensively studied using gas chromatog./mass spectrometry (GC/MS). However, flavor components in CRW are far richer than those detected by GC/MS. To obtain more information about the volatile profile of fresh (5-yr) and aged (10-yr) CRW, a method based on comprehensive two-dimensional gas chromatog. coupled to quadrupole mass spectrometry (GC×GC/qMS) was developed. The major volatile compounds contributing to the characteristic aroma of fresh and aged CRW were identified by surrogate odor activity value (OAV). RESULTS : Ninety-eight volatile compounds were detected in the 5-yr CRW samples and 107 in the 10-yr samples by GC×GC/qMS. The numbers of compounds detected by GC×GC/qMS for the 5-yr and 10-yr samples were 71.4 and 65.4% higher than those detected by GC/MS. The aged wine had a more complex volatile profile than the fresh wine, with an increase in esters and aldehydes and a decrease in alcs. and organic acids. There were 22 volatile compounds with surrogate OAV > 1. Nine were the potent key aroma compounds in CRW: Et isovalerate (OAV 500-33 500), Et butyrate (OAV 84-334), Et isobutyrate (OAV 49-170), 2-nonenal (OAV 20-100), Et heptanoate (OAV 1-74), Et hexanoate (OAV 60-77), phenylethyl alc. (OAV 2-18), benzaldehyde (OAV 28-30) and hexanal (OAV 4-11). CONCLUSION : GC×GC/qMS showed better separation than GC/MS. The presented GC×GC/qMS method was suitable for characterization of the volatile profile of CRW. © 2019 Society of Chem. Industry.

Journal of the Science of Food and Agriculture published new progress about Alcohols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, SDS of cas: 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nilsuwan, Krisana published the artcileFish gelatin monolayer and bilayer films incorporated with epigallocatechin gallate: Properties and their use as pouches for storage of chicken skin oil, Recommanded Product: 3-Pentanol, the main research area is fish gelatin film epigallocatechin gallate chicken skin oil.

The properties of monolayer and bilayer fish gelatin films and the corresponding films containing epigallocatechin gallate (EGCG) were examined Bilayer films showed higher tensile strength, water vapor and light barrier properties but also higher opaqueness and yellowness than monolayer films. No differences in elongation at break and oxygen barrier property between monolayer and bilayer films were observed Those films were used to produce pouches, in which chicken skin oil (CSO) was packaged. CSO packaged in the pouches prepared with the films containing EGCG showed lower peroxide value (PV), thiobarbituric acid reactive substances (TBARS) and volatile compounds after 30 days of storage in comparison with that packaged in low-d. polyethylene (LDPE) pouch. Addnl., at the end of the storage, linoleic acid (C18:2 n-6) and linolenic acid (C18:3 n-9) were more retained in CSO packaged in the pouches made from the films containing EGCG. Therefore, monolayer or bilayer gelatin films incorporated with EGCG could be used as packaging for oils prone to lipid oxidation

Food Hydrocolloids published new progress about Alcohols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Recommanded Product: 3-Pentanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bonatto Machado de Castilhos, Mauricio published the artcileSensory descriptive and comprehensive GC-MS as suitable tools to characterize the effects of alternative procedures on wine aroma. Part II: BRS Rub́ea and BRS Cora, Application In Synthesis of 584-02-1, the main research area is winemaking aroma; Drying; Non-Vitis vinifera; Sensory descriptive analysis; Submerged cap; Volatile compounds; Wine.

The present manuscript assessed the volatile and sensory profiles of BRS Rub́ea and BRS Cora wines elaborated from traditional, grape pre-drying and submerged cap winemaking. The wines contained a higher concentration of acetates (257 mg L-1 to 547 mg L-1) and Et and Me esters (183 mg L-1 to 456 mg L-1) in comparison with Vitis vinifera wines. PCA was applied (explaining 68.43% of the total variance), and the higher concentration of Et decanoate and Et octanoate, di-Et succinate, hydroxylinalool, and 2-Ph ethanol was responsible for describing the BRS Rub́ea wines as fruity/foxy. They also presented an intense jam note, probably due to their higher concentration of syringol and guaiacol. BRS Cora wines exhibited a vegetal note, possibly due to their higher concentration of 1-hexanol and cis-3-hexenol. Wines from pre-dried grapes presented higher concentration of furfural, assuming a bitter/burned almond aroma. Alternative winemaking accounted for suitable changes in wine aroma, enhancing wine quality.

Food Chemistry published new progress about Norisoprenoids Role: ANT (Analyte), PRP (Properties), ANST (Analytical Study). 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

Borzouei, Shahla published the artcileInduction of systemic resistance in tomato against broomrape (Phelipanche aegyptiaca), Recommanded Product: 3-Pentanol, the main research area is tomato broomrape systemic resistance Phelipanche.

Rhizosphere dwelling bacteria can increase plant resistance to biotic and abiotic stresses, and they promote plant growth through various mechanisms. In this study, three bioassays were conducted including the following: (a) screening for effective bacterial isolates in the suppression of broomrape, (b) evaluating induced systemic resistance against broomrape and (c) comparing the selected bacterium isolate with plant chem. inducers. Fifteen plant growth-promoting rhizobacteria (PGPR) were examined to assess their biocontrol potential against Egyptian broomrape (Phelipanche aegyptiaca). Ten isolates significantly reduced the broomrape biomass compared to the control. The Lysinibacillus boronitolerans B124 reduced the dry weight of broomrape plants from 2.15 g in control to 0.45 g. Bacillus megaterium B6 was the best isolate in reducing the number of broomrape tubercles. In addition, the activity of three selected bacterial isolates was investigated in induced systemic resistance to broomrape by split-root method. The Bacillus pumilus INR7 reduced the number of visible broomrape tubercles by 90%, and B. megaterium B71 and L. boronitolerans B124 were the next two in rank. Compared with the control, L. boronitolerans B124 reduced the dry weight of broomrape from 1.49 g in control to 0.39 g. In a subsequent experiment, L. boronitolerans B124 was evaluated along with some resistance-inducing volatile compounds Lysinibacillus boronitolerans B124 decreased the number of broomrapes by 87% on average, while the lowest dry weight of broomrape was observed in Me jasmonate treatment. In conclusion, PGPR have considerable potential to be used in the integrated management of broomrape. It is also possible to use a mixture of rhizobacteria and defense inducers, such as biogenic volatiles as a promising approach in the management of this noxious parasitic weed.

Journal of Phytopathology published new progress about 16S rRNA Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Recommanded Product: 3-Pentanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Kujundzic, Toni published the artcileEffects of Defoliation Treatments of Babica Grape Variety(Vitis vinifera L.) on Volatile Compounds Content in Wine, Quality Control of 584-02-1, the main research area is Vitis wine volatile compound defoliation; defoliation; gas chromatography; volatile compounds; wine.

The aim of this study was to determine the effects of defoliation performed in the Babica red grape variety on the volatile compounds in produced wine. Three treatments were performed during 2017 and 2018: the removal of six leaves before flowering (FL) and at the end of veraison (VER), as well as control (C). Volatile compounds were analyzed using a gas chromatograph coupled to a mass spectrophotometric detector. Statistically evaluated by anal. of variance (ANOVA at the p = 0.05 level) and principal component anal. (PCA). Defoliation treatments were affected by the concentration of several compounds, but only in one year. The VER2017 treatment significantly increased the concentration of three aliphatic esters up to 8 C atoms and octanoic acid Et ester. The FL2017 treatment increased the concentration of three aliphatic alcs. The FL2018 treatment has significantly enhanced the concentration Et cinnamate but decreased the concentrations of eugenol and dihydro-2-methyl-3(2H)-thiophenone. Both defoliation treatments reduced the concentration of γ-decanolactone in 2017. Aldehydes, monoterpenoles, and monoterpenes remained unaffected by the defoliation treatments. Vintage was found to be the largest source of variability for most volatile compounds under investigation, which was confirmed by PCA. The effect of defoliation in the mild-Mediterranean climate was found to mostly depend on seasonal weather conditions.

Molecules published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Quality Control of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Jie published the artcilePeroxide-Driven Hydroxylation of Small Alkanes Catalyzed by an Artificial P450BM3 Peroxygenase System, Related Products of alcohols-buliding-blocks, the main research area is alkane hydroxylation P450BM3 peroxygenase hydrogen peroxide protein engineering.

We report the selective hydroxylation of small alkanes with H2O2 catalyzed by an artificial P 450 peroxygenase system generated from engineered cytochrome P450BM3 variants in assistance with dual-functional small mol. (DFSM), in which DFSM acts as a general acid-base co-catalyst for activating H2O2. This peroxygenase system exhibited comparable catalytic turnover number (TON) to the fungal peroxygenase AaeUPO, the only known H2O2-dependent natural alkane hydroxylase. Moreover, when compared with evolved/engineered NADPH-dependent P 450 variants, the current system yielded similar or even better product formation rates (PFRs) but lower total TONs. The substitution of the highly conserved T268 with amino acids having hydrophobic side chains was identified to play critical roles in improving the hydroxylation activity of the DFSM-facilitated P450BM3 peroxygenase system, which is distinct from NADPH-dependent P 450 enzymes. These results offer useful insights into how to tune the catalytic functions and chem. of P 450 peroxygenases.

ACS Catalysis published new progress about Alkanes, C3-6 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Galebach, Peter H. published the artcileProduction of renewable alcohols from maple wood using supercritical methanol hydrodeoxygenation in a semi-continuous flowthrough reactor, Related Products of alcohols-buliding-blocks, the main research area is renewable alc maple wood supercritical methanol hydrodeoxygenation reactor.

Biomass conversion to alcs. using supercritical methanol depolymerization and hydrodeoxygenation (SCM-DHO) with CuMgAl mixed metal oxide is a promising process for biofuel production We demonstrate how maple wood can be converted at high weight loadings and product concentrations in a batch and a semi-continuous reactor to a mixture of C2-C10 linear and cyclic alcs. Maple wood was solubilized semi-continuously in supercritical methanol and then converted to a mixture of C2-C9 alcs. and aromatics over a packed bed of CuMgAlOx catalyst. Up to 95 wt% of maple wood can be solubilized in the methanol by using four temperature holds at 190, 230, 300, and 330°C. Lignin was solubilized at 190 and 230°C to a mixture of monomers, dimers, and trimers while hemicellulose and cellulose solubilized at 300 and 330°C to a mixture of oligomeric sugars and liquefaction products. The hemicellulose, cellulose, and lignin were converted to C2-C10 alc. fuel precursors over a packed bed of CuMgAlOx catalyst with 70-80% carbon yield of the entire maple wood. The methanol reforming activity of the catalyst decreased by 25% over four beds of biomass, which corresponds to 5 turnovers for the catalyst, but was regenerable after calcination and reduction In batch reactions, maple wood was converted at 10 wt% in methanol with 93% carbon yield to liquid products. The product concentration can be increased to 20 wt% by partially replacing the methanol with liquid products. The yield of alcs. in the semi-continuous reactor was approx. 30% lower than in batch reactions likely due to degradation of lignin and cellulose during solubilization. These results show that solubilization of whole biomass can be separated from catalytic conversion of the intermediates while still achieving a high yield of products. However, close contact of the catalyst and the biomass during solubilization is critical to achieve the highest yields and concentration of products.

Green Chemistry published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation) (mono-alcs., C2-C6). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Waris, Muhammad Irfan published the artcileMolecular and in vitro biochemical assessment of chemosensory protein 10 from brown planthopper Nilaparvata lugens at acidic pH, Synthetic Route of 584-02-1, the main research area is mol in vitro biochem assessment chemosensory protein; Nilaparvata lugens acidic pH.

Chemosensory proteins (CSPs) are important mol. components of the insect olfactory system, which are involved in capturing, binding, and transporting hydrophobic odor mols. across the sensillum in sensillar lymph in regulating insect behavior. This protein family (CSPs) is also involved in many other systems that are not linked to olfactory receptors in olfactory sensilla. The brown planthopper (BPH) is a monophagous pest of rice that causes damage by sucking phloem sap and transmitting a number of diseases caused by viruses. In this study, fluorescence competitive binding assay and fluorescence quenching assay at acidic pH were performed as well as homol. modeling to describe the binding affinity of NlugCSP10. Fluorescence competitive binding assay (FCBA) demonstrated that NlugCSP10 bound strongly to nonadecane, farnesene, and 2-tridecanone at acidic pH. The results of FCBA indicated that NlugCSP10 bound different ligands at the physiol. pH (5.0) of the bulk sensillum lymph. Fluorescence quenching assay demonstrated that NlugCSP10 generated a stable complex with 2-tridecanone, while two ligands nonadecane and farnesene collided due to mol. collisions. The interaction of selected ligands with the modeled structure of NlugCSP10 was also analyzed, which found the key amino acids (Gln23, Gln24, Gln25, Asn27, Met33, Ser34, Ile35, Tyr36, Asn42, Met43, Val45, Asn46, Asn93, Arg96, Ala97, Lys99, and Ala100) in NlugCSP10 that were involved in binding of volatile compounds The present study contributes to the binding profile of NlugCSP10 that promotes the development of behaviorally active ligands based on BPH olfactory system.

Journal of Integrative Agriculture published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study) (Ala97). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Synthetic Route of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Choung, Wonken published the artcileIdentification of BR101549 as a lead candidate of non-TZD PPARγ agonist for the treatment of type 2 diabetes: Proof-of-concept evaluation and SAR, Synthetic Route of 584-02-1, the main research area is drug discovery antidiabetics PPARgamma agonist SAR type 2 diabetes; Antidiabetics; Drug discovery; PPARgamma agonist.

The new class of PPARgamma non-TZD agonist originally derived from the backbone of anti-hypertensive Fimasartan, BR101549, was identified as a potential lead for anti-diabetic drug development. The X-ray crystallog. of BR101549(I) with PPARgamma ligand binding domain (LBD) revealed unique binding characteristics vs. traditional TZD full agonists. The lead candidate, BR101549, has been found activating PPARgamma to the level of Pioglitazone in vitro and indeed has demonstrated its effects on blood glucose control in mouse proof-of-concept evaluation. The attempts to improve its metabolic stability profile through follow-up SAR including deuterium incorporation have been also described.

Bioorganic & Medicinal Chemistry Letters published new progress about Adiponectins Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Synthetic Route of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts