Category: 110-42-9

Xia, Yanan published the artcileAssessment of key aroma compounds in fresh jujube brandy by GC-O-MS and odor activity value, Quality Control of 110-42-9, the main research area is jujube flavor aroma isobutanol phenylethanol food quality.

Fresh jujube brandy (FJB, 50% volume/volume ethanol) was produced by the distillation of the fermented broth obtained by continuous jujube fermentation with Saccharomyces cerevisiae. Fifty-five aroma-active compounds of jujube brandy (JB) were found by GC-O-MS. Through the calculation of odor activity value, 27 compounds that make a contribution to the JB aroma were identified and 16 key flavor compounds of JB were determined, including Et octanoate, Et caproate, Et isovalerate, Et laurate, 2-undecanone, Et valerate, etc., followed by aroma reconstruction experiments for confirmation. Great similarity and differences were found in different brandies on the characteristic aroma compounds by principal component anal. Furthermore, four components (Et butyrate, Et valerate, Et octanate, and benzaldehyde) were partly originated from jujube. During fermentation, eight Me esters converted to Et esters, and nine new compounds (Et 2-methyl-butyrate, Et iso-valerate, etc.) were formed. Practical applications : FJB (50% volume/volume ethanol), produced by the distillation of the fermented broth obtained by continuous jujube fermentation with Saccharomyces cerevisiae, is a famous alc. beverage in Taihang Mountain districts in Hebei with Chinese characteristics. But the development of FJB was restricted because its flavor and quality were very unstable. Understanding the key aroma compounds of JB and its formation mechanism could provide a guide of process optimization and flavor regulation, making it become a unique brandy with Chinese characteristics, recognized and accepting by the world.

Journal of Food Processing and Preservation published new progress about Alcoholic beverages. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Quality Control of 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Samatov, Aizat A. published the artcileVaporization/sublimation enthalpies of mono- and dimethyl-esters estimated by solution calorimetry method, Application of Methyl decanoate, the main research area is methyl ester solution calorimetry vaporization sublimation enthalpy.

The additive scheme for calculating the solvation enthalpies of aliphatic compounds has been developed for linear mono- and dimethyl-esters. Ester group contribution to the enthalpy of solvation in n-heptane was obtained. Accuracy of the proposed approach for determination of solvation enthalpies of linear mono- and dimethyl-esters was tested by comparison with exptl. solvation enthalpies. In most cases, deviations do not exceed 1 kJ·mol-1. It was found that the dependence of the solution enthalpies of mono- and dimethyl-esters on the number of carbon atoms in the mol. can be fitted by power function. This dependence and a group-additivity scheme for solvation enthalpy were used for estimation of the enthalpies of phase transitions of mono- and dimethyl-esters. Evaluated values of sublimation, vaporization, and fusion enthalpies at 298.15 K are in good agreement with exptl. data obtained by conventional methods.

Thermochimica Acta published new progress about Evaporation enthalpy. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Application of Methyl decanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Nurman, Salfauqi published the artcileOptimization and characterization of n-hexane extracts of arabica coffee ground (Coffea arabica L.) from Gayo Plateau as source of natural antioxidant, Application In Synthesis of 110-42-9, the main research area is Coffea hexane extract natural antioxidant activitiy.

Arabica coffee is a major commodity crop in the Gayo Plateau, Aceh Province. Utilization of coffee in the area only as a raw material for making coffee drinks and produce waste that is not utilized. The aim of this study is optimization and characterization of n-hexane extract of Arabica Gayo coffee ground (Coffea arabica L.) as a source of natural antioxidant. The extraction process used soxhlet method with n-hexane solvent. Characterization of arabica coffee ground oil consist ofanal. of functional group using FTIR, component anal. using GC-MS and antioxidant anal. using DPPH method. The optimum time of the soxhletprocess of Arabica coffee is 180 min with rendement of 9,54%, anal. of functional group shows CH2 asym. stretch at 2922 cm-1, CH2 sym. stretch at 2853 cm-1, C=O asym. stretch at 1741 cm-1, CH2 bending at 1458 cm-1, C-CH3 vibration at 1159 cm-1 and CH vibration at 718 cm-1. The main component of Arabica Gayo coffee ground oil is 1,2-benzenedicarboxylic acid, bis(2-ethylhexyl) ester with an area of 18.09%, antioxidant activitiy of Arabica Gayo coffee ground oil is very weak with IC50 value = 1222,31 ppm.

Journal of Physics: Conference Series published new progress about Natural antioxidants. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Application In Synthesis of 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sun, Nan published the artcileAssessment of chemical constitution and aroma properties of kiwi wines obtained from pure and mixed fermentation with Wickerhamomyces anomalus and Saccharomyces cerevisiae, Application In Synthesis of 110-42-9, the main research area is ester aldehyde terpene kiwi wine aroma Wickerhamomyces Saccharomyces fermentation; Wickerhamomyces anomalus; kiwi wine; mixed fermentations; partial least squares regression.

To improve the aroma of kiwi wine through the utilization of Wickerhamomyces anomalus, kiwi juice was fermented using a selected W. anomalus strain in pure culture and mixed fermentations with Saccharomyces cerevisiae, which was inoculated simultaneously and sequentially. The physicochem. indexes, volatile compounds and aroma properties of the kiwi wines were assessed. The study suggested that the ethanol, color indexes and organic acids of the wines were closely related to the method of inoculation. Compared with the pure S. cerevisiae fermentation, the mixed fermentations produced more varieties and concentrations of volatiles. The sequential fermentations increased the concentrations of esters and terpenes, improving the flower and sweet fruit notes of the wines. The simultaneous inoculation enhanced the contents of esters and aldehydes, intensifying the flower, sweet and sour fruit of the wines. Partial least-squares regression anal. showed that esters and terpenes contributed greatly to the flower and sweet fruit aroma, whereas aldehydes were the major contributors to the sour note. Based on our results, the mixed fermentations not only enriched the types and concentrations of volatiles, but also had better sensory properties.

Journal of the Science of Food and Agriculture published new progress about Actinidia chinensis. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Application In Synthesis of 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Lai, Yen-Tso published the artcileIsolation and identification of aroma-producing non-Saccharomyces yeast strains and the enological characteristic comparison in wine making, Formula: C11H22O2, the main research area is Saccharomyces cerevisiae yeast aroma wine making.

Microorganisms produce hundreds of aroma-active compounds during fermentation process which affect the flavor of the final wine product. The current study explored the enol. characteristics of non-Saccharomyces yeast strains and their influence on aroma compound complexity during fermentation process. Forty-two yeast strains were isolated from fruits by the DNA sequencing identification. Hanseniaspora uvarum Pi235, Pichia kluyveri Pe114, Saccharomyces cerevisiae Gr112 and Hanseniaspora guilliermondii Ki135 were selected for the following experiments due to the safety considerations and aroma diversity. Biochem. characteristics results showed that H. uvarum Pi235, P. kluyveri Pe114 and S. cerevisiae Gr112 exhibited different consumption preference in maltose, xylose and glycerol assimilation compared with their standard strains. Enol. characteristics results showed that S. cerevisiae Gr112 exhibited best thermal tolerance, ethanol tolerance and β-glucosidase activity. Results of volatile aroma compounds anal. showed that non-Saccharomyces yeast strains were good at producing esters, such as Et acetate and 2-phenethyl acetate which were 11.8-25.4 and 4.1-15.2 folds higher than that from S. cerevisiae Gr112. Non-Saccharomyces yeast strains would provide more divers flavors in wines. The results will increase the applicability of non-Saccharomyces yeasts in the winemaking industry.

LWT–Food Science and Technology published new progress about Biochemical analysis. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Formula: C11H22O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Radulovic, Niko S. published the artcileImmunomodulatory Constituents of Conocephalum conicum (Snake Liverwort) and the Relationship of Isolepidozenes to Germacranes and Humulanes, SDS of cas: 110-42-9, the main research area is immunomodulatory Conocephalum isolepidozene germacrane humulane.

Structural elucidation of three new sesquiterpenoids, namely, (1Z,4E)-lepidoza-1(10),4-dien-14-ol (I), rel-(1(10)Z,4S,5E,7R)-germacra-1(10),6 diene-11,14-diol (2), and rel-(1(10)Z,4S,5E,7R)-humula-1(10),5-diene-7,14-diol (3), isolated from the liverwort Conocephalum conicum, was accomplished by a combination of extensive NMR experiments, 1H NMR simulation, and other means. Addnl., the change of the identity of bicyclogermacren-14-al, previously reported as a C. conicum constituent, to isolepidozen-14-al is proposed. Compounds 2 and 3 appear to be related to I via hydration involving a shared intermediate, a substituted cyclopropylmethyl cation, formed by a highly regio- and stereoselective protonation of I, followed by a stereospecific fission of the three-membered ring. In other words, an isolepidozene derivative might be a branchpoint to humulanes and germacranes; this transformation could be of, up to now, unknown, biosynthetic and/or synthetic relevance. Multivariate statistical anal. of the compositional data of C. conicum extract constituents was used to probe the hypothesized biochem. relations. The immunomodulatory effect of I-3 and conocephalenol (4) was evaluated in an in vitro model on both nonstimulated and mitogen-stimulated rat splenocytes. The compounds displayed varying degrees of cytotoxicity to nonstimulated splenocytes, whereas 2 and 3 were found to exert immunosuppressive effects on Con A-stimulated splenocytes while not being cytotoxic at the same concentrations

Journal of Natural Products published new progress about Conocephalum conicum. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, SDS of cas: 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Abbas, Rasha Khalid published the artcileChemical constituents of the goat margarine and antibacterial activity against bacterial Pathogens in Sudan, Product Details of C11H22O2, the main research area is Escherichia Pseudomonas Salmonella goat margarine chem constituent antibacterial.

The margarine constituents were examined by Gas Chromatog.-Mass Spectrometry (GC-MS), it contained 41 compounds, fifteen of them were identified as the major compound, Hexadecanoic acid, Me ester (22.39%), Me stearate (14.92%), Me elaidate (13.80%), Me tetradecanoate (10.74%), Capric acid, Me ester (8.34%) Lauric acid (4.52%) Me octanoate (2.70%), linoleic acid Me ester (2.57%), Me 11-octadecenoate (1.90%), Me caproate (1.77%), Me pentadecanoate (1.72%), Me (8E,11E)-8,11-octadecadienoate (1.70%), Heptadecanoic acid, Me ester, (1.46%),trans-13-Octadecenoic acid, Me ester (Oleic acid) (1.20%), Me palmioleate (1.00%). The effect of goat margarine, against four different pathogenic bacteria Escherichia coli, Pseudomonas aeruginosa, Salmonella typhimurium, and Bacillus cereus, were carried out by using a disk diffusion technique, the highest antibacterial activity was detected against Salmonella typhimurium and the lowest one against Escherichia coli. The antibacterial activity of the antibiotics, (Ciprofloxacin, Tetracycline Ceftriaxone, Chloramphenicol and Gentamycin), were tested by the disk diffusion technique, and by measuring zones of inhibition, shows that there were differences, among all antibiotic the highest activity of antibiotic against bacteria was due to the action of ciprofloxacin. Ceftriaxone and Tetracycline antibiotic give lowest activity.

Journal of Pure and Applied Microbiology published new progress about Antibacterial agents. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Product Details of C11H22O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Mwinga, James L. published the artcileIn vitro antimicrobial effects of Hypoxis hemerocallidea against six pathogens with dermatological relevance and its phytochemical characterization and cytotoxicity evaluation, SDS of cas: 110-42-9, the main research area is Hypoxis kidney cell cytotoxicity phytochem antimicrobial; Antibacterial; Antifungal; Antioxidant; Cytotoxicity; Gas Chromatography-Mass Spectrometry (GC-MS); Hypoxis hemerocallidea; Phytochemistry; Phytocosmetics.

Hypoxis hemerocallidea (commonly known as African Potato) is popular in African traditional medicine. It is used in the management of diverse ailments including burns, wounds and skin-related diseases. The current study investigated the antimicrobial effects of Hypoxis hemerocallidea against six microorganisms associated with skin diseases. In addition, the antioxidant activity, phytochem. profiles and cytotoxicity of the bulb extracts were evaluated. The antimicrobial activity of 50% methanol (MeOH) and petroleum ether (PE) extracts of Hypoxis hemerocallidea bulbs was tested against two bacterial and four fungal strains implicated in causing opportunistic skin-related diseases. Antioxidant potential of the extract was investigated via the 2,2-diphenyl-1-picryhydrazyl (DPPH) free radical scavenging assay and β-carotene linoleic acid model. Phytochem. profiling of the 50% MeOH extract of Hypoxis hemerocallidea was done using spectrophotometric assay and Gas Chromatog.-Mass Spectrometry (GC-MS). The extracts were also evaluated for cytotoxicity against African green monkey Vero kidney cell lines based on the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) colorimetric assay. Both 50% MeOH and PE extracts showed considerable inhibitory effects against all six microorganisms. The extracts were potent against Shigella flexneri and Trichophyton tonsurans with min. inhibitory concentration (MIC) values less than 1 mg/mL. However, there was relatively poor antifungal activity against the other fungal strains. In the DPPH assay, the MeOH extract of the bulb had an EC50 of 29.8μg/mL while 76.91% antioxidant activity was observed in the β-carotene-linoleic acid model. The extract contained total phenolics (41 mg GAE/g) and flavonoids (10 mg CE/g). The GC-MS anal. of Hypoxis hemerocallidea bulb revealed 29 and 160 bioactive compounds for 50% MeOH and PE extracts, resp. Based on the cytotoxicity, Hypoxis hemerocallidea had LC50 value of 210.9 ± 18.4 and 95.5 ± 13.3μg/mL for PE and MeOH extracts, resp. The bulb extracts of Hypoxis hemerocallidea exhibited good antimicrobial and antioxidant activities, which could be attributed to the presence of phenolics, flavonoids and the other bioactive compounds identified through GC-MS, making it a potentially effective cosmetic plant. These findings also account for the multi-pharmacol. use of Hypoxis hemerocallidea in traditional medicine, especially related to skin diseases. The plant extracts can be considered as safe based on their LC50 values (< 20μg/mL). However, other form of cytotoxicity studies need to be carried out on Hypoxis hemerocallidea, as well as in vivo tests, to confirm its safety and efficacy as a treatment for skin-related diseases. Journal of Ethnopharmacology published new progress about Antimicrobial agents. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, SDS of cas: 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Hua-Ying published the artcileOptimization of SPME-GC-MS and characterization of floral scents from Aquilegia japonica and A. amurensis flowers, Application of Methyl decanoate, the main research area is Aquilegia Asterias SPME GC MS VOC; Columbines; GC–MS; Northeast China; SPME; VOCs.

The floral scents of plants play a key role in plant reproduction through the communication between plants and pollinators. Aquilegia as a model species for studying evolution, however, there have been few studies on the floral scents and relationships between floral scents and pollination for Aquilegia taxa. In this study, three types of solid-phase micro-extraction (SPME) fiber coatings (DVB/PDMS, CAR/PDMS, DVB/CAR/PDMS) were evaluated for their performance in extracting volatile organic compounds (VOCs) from flowers of Aquilegia amurensis, which can contribute to the future studies of elucidating the role of floral scents in the pollination process. In total, 55 VOCs were identified, and among them, 50, 47 and 45 VOCs were extracted by the DVB/CAR/PDMS fiber, CAR/PDMS fiber and DVB/PDMS fibers, resp. Only 30 VOCs were detected in A. japonica taxa. Furthermore, the relative contents of 8 VOCs were significant different (VIP > 1 and p < 0.05) between the A. amurensis and A. japonica. The results can be applied in new studies of the relationships between the chem. composition of floral scents and the processes of attraction of pollinator. It may provide new ideas for rapid evolution and frequent interspecific hybridization of Aquilegia. BMC Chemistry published new progress about Aquilegia flabellata. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Application of Methyl decanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Medeiros, Hugo A. D. published the artcileInfluence of estimated physical constants and vapor pressure for esters in the methanol/ethanol recovery column for biodiesel production, Related Products of esters-buliding-blocks, the main research area is phys constant vapor pressure; ester methanol ethanol recovery column biodiesel production.

The influence of the estimated values of the phys. constants and vapor pressure of esters in a process simulation using the Aspen Hysys was evaluated from the energy parameters of a methanol/ethanol recovery distillation column of a biodiesel production plant. This study was necessary, because in process simulators most of FAMEs and FAEEs are not originally available in the simulator library, due to the lack of exptl. data for these components. Accuracy analyses for the values of reboiler temperature and reboiler heat duty of the simulated column were performed from simulations using different predictive models and exptl. data. Results demonstrated that small deviations of the vapor pressure can generate considerable errors in the reboiler temperature and reboiler heat duty. In addition, errors can be even greater if vapor pressure is estimated from inaccurate critical constants Deviations up to 13% were observed for the reboiler temperature and up to 16% for the reboiler heat duty. Reliable simulations and process design are strongly dependent on the selected phys. properties of the esters, specially vapor pressure, which are generated from available exptl. data and using group contribution and corresponding states models.

Fuel published new progress about Binary phase diagram. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Related Products of esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics