Category: 140-11-4

Liu, Yanhong published the artcileMicroencapsulation of Osmanthus essential oil by interfacial polymerization: Optimization, characterization, release kinetics, and storage stability of essential oil from microcapsules, SDS of cas: 140-11-4, the main research area is Osmanthus essential oil interfacial polymerization elasticity gamma decanolide; Osmanthus essential oil; interfacial polymerization; microencapsulation; polyurea membrane; release kinetics; storage stability.

In this paper, the interface polymerization method was used to prepare Osmanthus essential oil microcapsules. The optimal preparation process of Osmanthus essential oil microcapsules was explored as follows: the dosage ratio of Osmanthus essential oil to N100 was 6:1, the reaction temperature was 70°C, and the reaction time was 2 h. The encapsulation efficiency of Osmanthus essential oil microcapsules could reach 80.31%. The particle size distribution, morphol., chem. structure, and thermal stability of the obtained microcapsules were characterized by laser particle size analyzer, SEM, Fourier transform IR spectroscopy, and thermogravimetric anal. The release kinetics and storage stability experiments of the microcapsules were studied. The results showed that the average volume diameter of the microcapsules was 101.2 μm. The microcapsules were in the shape of full spheres, with a smooth surface, low viscosity, and high elasticity. Microencapsulation improved the thermal stability of Osmanthus essential oil and promoted the slow release of essential oil. The synthesized microcapsules showed good storage stability under refrigerated and dark conditions, which indicated that microcapsules had broad application prospects in food, medicine, and other fields. Practical Application : In this study, we prepared a polyurea membrane to encapsulate Osmanthus essential oil microcapsules by interfacial polymerization The encapsulation conditions of the microcapsules were optimized and the structure of the microcapsules was characterized in this study. The results showed that microcapsules had a full spherical shape with a smooth surface, high elasticity, good sustained-release ability, good thermal stability, and storage stability. These properties indicated that microcapsules have good application prospects and can be used as a high-quality flavor with a long residual effect and high thermal stability for food and cosmetic scope.

Journal of Food Science published new progress about Elasticity. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, SDS of cas: 140-11-4.

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

Liu, Di published the artcileDiversity and dynamics of fungi during spontaneous fermentations and association with unique aroma profiles in wine, Computed Properties of 140-11-4, the main research area is wine aroma spontaneous fermentation fungi diversity dynamics; Fungal microbiota; Microbial biogeography; Saccharomyces cerevisiae; Spontaneous fermentation; Wine.

Microbial ecol. is an integral part of an agricultural ecosystem and influences the quality of agricultural commodities. Microbial activity influences grapevine health and crop production, conversion of sugar to ethanol during fermentation, thus forming wine aroma and flavor. There are regionally differentiated microbial patterns in grapevines and must but how microbial patterns contribute to wine regional distinctiveness (terroir) at small scale (<100 km) is not well defined. Here we characterize fungal communities, yeast populations, and Saccharomyces cerevisiae populations during spontaneous fermentation using metagenomics and population genetics to investigate microbial distribution and fungal contributions to the resultant wine. We found differentiation of fungi, yeasts, and S. cerevisiae between geog. origins (estate/vineyard), with influences from the grape variety. Growth and dominance of S. cerevisiae during fermentation reshaped the fungal community and showed geog. structure at the strain level. Associations between fungal microbiota diversity and wine chems. suggest that S. cerevisiae plays a primary role in determining wine aroma profiles at a sub-regional scale. The geog. distribution at scales of less than 12 km supports that differential microbial communities, including the dominant fermentative yeast S. cerevisiae can be distinct in a local setting. These findings provide further evidence for microbial contributions to wine terroir, and perspectives for sustainable agricultural practices to maintain microbial diversity and optimize fermentation function to craft beverage quality. International Journal of Food Microbiology published new progress about Alternaria. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Computed Properties of 140-11-4.

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

Franz, Roland published the artcileContamination levels in recollected PET bottles from non-food applications and their impact on the safety of recycled PET for food contact, Synthetic Route of 140-11-4, the main research area is contamination PET bottles food packaging genotoxicity toxicol; PET bottles; PET contaminants; exposure; food packaging; migration; non-food PET applications; non-intentionally added substances (NIAS); post-consumer polyethylene terephthalate (PET); recycling; safety.

PET beverage bottles have been recycled and safely reprocessed into new food contact packaging applications for over two decades. During recollection of post-consumer PET beverage bottles, PET containers from non-food products are inevitably co-collected and thereby enter the PET recycling feed stream. To explore the impact of this mixing on the safety-in-use of recycled PET (rPET) bottles, we determined the concentrations of post-consumer substances in PET containers used for a range of non-food product applications taken from the market. Based on the chem. nature and amounts of these post-consumer substances, we evaluated their potential carry-over into beverages filled in rPET bottles starting from different fractions of non-food PET in the recollection systems and taking worst-case cleaning efficiencies of super-clean recycling processes into account. On the basis of the Threshold of Toxicol. Concern (TTC) concept and Cramer classification tools, we present a risk assessment for potential exposure of the consumer to the identified contaminants as well as unidentified, potentially genotoxic substances in beverages. As a result, a fraction of 5% non-food PET in the recycling feed stream, which is very likely to occur in the usual recollection systems, does not pose any risk to the consumer. Our data show that fractions of up to 20%, which may sporadically be contained in certain, local recollection systems, would also not raise a safety concern.

Molecules published new progress about Antifreeze. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Synthetic Route of 140-11-4.

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

Hung, Pei-Hsuan published the artcileIn vitro and in silico genetic toxicity screening of flavor compounds and other ingredients in tobacco products with emphasis on ENDS, Related Products of esters-buliding-blocks, the main research area is genotoxicity flavor in silico analysis tobacco; DNA damage; QSAR; biomarkers; computational toxicology; electronic nicotine delivery systems; flavor; in vitro; in vitro genotoxicity; tobacco products.

Electronic nicotine delivery systems (ENDS) are regulated tobacco products and often contain flavor compounds Given the concern of increased use and the appeal of ENDS by young people, evaluating the potential of flavors to induce DNA damage is important for health hazard identification. In this study, alternative methods were used as prioritization tools to study the genotoxic mode of action (MoA) of 150 flavor compounds In particular, clastogen-sensitive (γH2AX and p53) and aneugen-sensitive (p-H3 and polyploidy) biomarkers of DNA damage in human TK6 cells were aggregated through a supervised three-pronged ensemble machine learning prediction model to prioritize chems. based on genotoxicity. In addition, in silico quant. structure-activity relationship (QSAR) models were used to predict genotoxicity and carcinogenic potential. The in vitro assay identified 25 flavors as pos. for genotoxicity: 15 clastogenic, eight aneugenic and two with a mixed MoA (clastogenic and aneugenic). Twenty-three of these 25 flavors predicted to induce DNA damage in vitro are documented in public literature to be in e-liquid or in the aerosols produced by ENDS products with youth-appealing flavors and names. QSAR models predicted 46 (31%) of 150 compounds having at least one pos. call for mutagenicity, clastogenicity or rodent carcinogenicity, 49 (33%) compounds were predicted neg. for all three endpoints, and remaining compounds had no prediction call.

Journal of Applied Toxicology published new progress about Biomarkers. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Related Products of esters-buliding-blocks.

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

Hu, Jing published the artcileComparative study on the effect of two drying methods on the guest encapsulation behavior of osmanthus flavor-2-hydroxypropyl-β-cyclodextrin inclusion complex, Recommanded Product: Benzyl acetate, the main research area is oven freeze drying encapsulation osmanthus flavor hydroxypropyl beta cyclodextrin.

In this study, osmanthus flavor (OF) and HP-β-CD were used to prepare OF and HP-β-CD inclusion complex (OF-CD). OF-CD powders were obtained with oven-drying and freeze-drying, sep. The effect of drying methods was investigated with the morphol. and odor evaluation first. The chem. structure and flavor loading ratio of OF-CDs were determined by Fourier transform IR spectroscopy (FTIR) and Gas chromatog.-mass spectrometry (GC-MS). The flavor was successfully be encapsulated by HP-β-CD forming OF-CD inclusion complex. Oven-drying led to compact blocky solid, while freeze-drying resulted in porous morphol. The amount of flavor in OF-CD with oven-drying (48.61 μg[n.8260]g) was found lower than that in OF-CD with freeze-drying (58.1 μg[n.8260]g). In particular, the content of alcoholics in OF-CD with oven-drying (11.8 μg[n.8260]g) was much lower than that in OF-CD with freeze-drying (19.04 μg[n.8260]g). Thermogravimetric anal. (TGA) showed that the average activation energy of OF-CD with oven-drying (66.3-135.4 kJ mol-1) was higher than OF-CD with freeze-drying (53.0-100.7 kJ mol-1) by 13.3-34.7 kJ mol-1. More intermol. hydrogen bonds in OF-CD with freeze-drying led to high encapsulation of partial components; however, they are not thermostable, resulting in fast release at high temperature The better thermal stability of OF-CD with oven-drying makes itself a better candidate for flavor encapsulation for cooking at high temperature

Flavour and Fragrance Journal published new progress about Alcoholics. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Recommanded Product: Benzyl acetate.

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

Richter, Tobias M. published the artcileBinding and release of odor compounds from textiles: Changing fiber selection for apparel, Category: esters-buliding-blocks, the main research area is odor compound binding release textile fiber selection apparel.

Understanding odor volatiles known to constitute those emanating from the human body and how these interact with textiles is relevant to diverse interested parties because of changing fiber use, a better understanding of apparel life cycles including cleaning and the potential for fiber/textile re-use. This paper extends the application of our proton transfer reaction-mass spectrometry model system on adsorption and release behavior of fiber types typical of next-to-skin uses to include both viscose and other volatile organic compounds in body odor for which release has not previously been studied (hexanoic acid, acetone, cyclohexanone, hexanal, Me butanoate, Et benzene, 1-octanol, decanal, butanoic acid). The current findings confirmed release patterns of different fiber types found in our earlier studies – low release of volatile organic compounds from cotton and wool, but higher release from polyester – and made a new finding of low release from viscose. Adsorption characteristics were different given the different volatile organic compounds analyzed. Viscose showed better adsorption characteristics for primarily polar volatile organic compounds, but was otherwise very similar to cotton.

Textile Research Journal published new progress about Adsorption. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Category: esters-buliding-blocks.

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

Goda, Mohamed Nady published the artcileMineral acid-activated sugarcane bagasse ash as solid acid catalyst for the liquid phase esterification of acetic acid with n-amyl, benzyl, and n-butyl alcohols, Formula: C9H10O2, the main research area is acetic acid amyl benzyl butyl alc sugarcane bagasse esterification.

Liquid phase esterification of carboxylic acids with alcs. is an important organic synthesis process in the petrochem. and fine chem. industries. These reactions required mineral acid catalysts, which are corrosive and difficult to be separated from the reaction mixture Therefore, the use of solid acid catalysts is economically viable, reusable, and environmentally amicable. In this study, sugarcane bagasse ash (SCBA) was impregnated with 1-10 weight% of sulfuric acid (H2SO4) or perchloric acid (HClO4) for the liquid-phase esterification of acetic acid with n-amyl, benzyl, and Bu alcs. under various reaction conditions. The catalysts were characterized using X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier-transform IR (FTIR), N2 sorption, and SEM. Their acidities were measured through the dehydration of iso-Pr alc. and pyridine adsorption FTIR. The effects of the acid activation of SCBA on its texture properties (such as surface area and the nature of the surface functional groups), acidity, and catalytic activity were studied in detail. FTIR of the pre-saturated catalysts with pyridine reflected the presence of Bronsted and Lewis acid sites. The concentrations of the acid sites were improved by increasing the percentages of acid loading. All the catalysts showed high catalytic activity with 100% selectivity to ester formation. The catalyst pretreated with H2SO4 showed the higher ester yields compared to that of treated with HClO4. The optimum reaction conditions were a reaction time of 2 h, an alc.-to-acid molar ratio of 1:3, and catalyst loading of 0.5 g. The highest yields of n-amyl acetate, benzyl acetate, and Bu acetate of 98, 90.8, and 70.5%, resp., were achieved over the SCBA pretreated with 10 weight% H2SO4 catalyst. The high catalytic performance of this catalyst is due to the high surface acidity generated by the inductive effect of the S=O bond.

Journal of Environmental Chemical Engineering published new progress about Adsorption. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Formula: C9H10O2.

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

Vardini, Mohammad Taghi published the artcileGraphite electrode potentiometric sensor modified by surface imprinted silica gel to measure valproic acid, Recommanded Product: Benzyl acetate, the main research area is valproic acid silica gel graphite electrode potentiometric sensor.

The aim of the study was to produce a Polyvinyl chloride-based membrane containing a polymer imprinted with a valproic acid mol. which was directly coated on a graphite electrode to determine the amount of valproic acid in aqueous samples. With the dispersion of molecularly imprinted polymer particles in dioctyl phthalate plasticizer as a solvent mediator, this potentiometric sensor was designed and after that it was embedded in a polyvinyl chloride matrix. The designed electrode showed a near-Nernstian slope of 54.1 ± 1 mV decade-1 in the concentration range of 10-6-10-2 M and a detection limit of 10-6 M with a response time of about 40 s for valproic acid and can be used for 2 mo without divergence changing the potential. The fabricated electrode, in the pH range among 3.5-8.5, indicates the good sensitivity to valproic acid relative to the other ions. Finally, this electrode can be used as an indicator electrode in determining the concentration of valproic acid in valproic acid tablets.

Chemical Methodologies published new progress about Absorption. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Recommanded Product: Benzyl acetate.

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

Aszyk, Justyna published the artcileConcentration levels of selected analytes in the gas phase of an e-cigarette aerosol, Related Products of esters-buliding-blocks, the main research area is electronic cigarette gas phase aerosol.

The aerosols generated from e-cigarettes are composed of liquid and gas phases resulting from vaporized e-liquid The apportioning of substances from e-liquid into the liquid and gas phases during e-cigarette use has not been extensively studied. Partitioning of e-liquid components between the gas and the liquid phase of the aerosol influences the substances inhaled and exhaled by the users, leading to second-hand exposure. It seems important to determine which compounds and how much of them are transferred into the gas phase and may immediately enter the bloodstream. For this purpose, a method based on thermal desorption followed by gas chromatog. coupled with tandem mass spectrometry (GC-MS/MS) in electron ionization mode was developed. As in a previous study, an automatic generator of an aerosol from an e-cigarette with a collection tube filled with melt-blown non-woven fabric disks and equipped with Tenax TA sorption tubes was used. The melt-blown non-woven fabric is designed to capture liquid phase compounds, while sorption tubes are meant to sorb compounds in the gas phase of the aerosol. To control the e-liquid mass changes before and after a puff session, quantitation based on the mass change tracking approach (MCT) was applied. Accuracy of the developed method ranged between 91% and 110% regardless of the spiking level, with precision and reproducibility better than 10%. The limits of detection (LODs) ranged from 0.015 to 0.076 ng of substance emitted/mg of consumed e-liquid, while limits of quantitation (LOQs) ranged from 0.045 to 0.23 ng of substance emitted/mg of consumed e-liquid Most of the compounds are deposited in the liquid phase of the aerosol, while only trace levels of some substances may be observed in an actual, non-condensed gas phase.

Microchemical Journal published new progress about Adsorption. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Related Products of esters-buliding-blocks.

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

Yang, Ruijie published the artcileThe performance and reaction pathway of δ-MnO2/USY for catalytic oxidation of toluene in the presence of ozone at room temperature, Computed Properties of 140-11-4, the main research area is manganese oxide zeolite toluene catalytic oxidation ozone removal; Catalytic oxidation pathway; Ozone; Toluene; USY; δ-MnO(2).

In this work, a series of δ-MnO2/USY with different contents of δ-MnO2 (0.3 wt%, 1.5 wt%, 3.0 wt%, 10.0 wt%, and 15.0 wt%) were prepared In addition, their performances of the adsorption of toluene, degradation and mineralization of toluene, and removal of ozone (O3) were investigated. The results showed that, among all the samples, 3.0 wt% δ-MnO2/USY displayed the best performance of toluene adsorption, degradation and mineralization. Furthermore, according to the in situ DRIFTS and GC-MS anal., the intermediate byproducts during the toluene degradation progress were ascertained and the possible pathway of catalytic oxidation toluene by δ-MnO2/USY in the presence of O3 was proposed.

Chemosphere published new progress about Absorption. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Computed Properties of 140-11-4.

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