Category: esters-buliding-blocks

Tian, Qirui published the artcileIn situ complex coacervation supported by self-coated polydopamine interlayer on uniform-sized essential oils droplet, Related Products of esters-buliding-blocks, the main research area is coacervation polydopamine coated essential oils droplet.

Essential oils (EOs) are common additives in daily products by virtue of their olfactory, physicochem., and biol. characteristics. However, EOs are physicochem. unstable and susceptible to degradation or loss, leading to limited shelf life and inadequate efficacy. Herein we propose a new bi-layered encapsulation structure in combination with complex coacervation and self-coating of polydopamine (PDA) on membrane emulsified mono-dispersion of EOs droplets. A mono-dispersed EOs emulsion stabilized by nonionic surfactants was produced by membrane emulsification, wherein the EOs droplets were applied as soft templates to deposit a superficial PDA layer. Under alk. conditions, gelatin (GE) was bound to the PDA layer and further applied as in situ coacervation sites for gum Arabic (GA). Structural identification and morphol. observation proved the successful preparation of bi-layered EOs capsules. Compared with traditional complex coacervation strategies, current novel bi-layered capsules showed significantly improved structural stability, thermal stability, providing better protection of EOs with sustained release properties. Moreover, the encapsulation efficiency and loading content were both proved higher for the bi-layered system. The first report on PDA-coating onto surfactants-absorbed macroemulsion droplets also provides an in-depth insight into applying PDA as versatile intermediate functional biomaterials.

Journal of Colloid and Interface Science published new progress about Bilayer films. 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

Sun, Yiqi published the artcileGrafting Lignin with Bioderived Polyacrylates for Low-Cost, Ductile, and Fully Biobased Poly(lactic acid) Composites, Formula: C16H30O2, the main research area is lignin bioderived polyacrylate graft toughening agent polylactic acid composite.

It has been always attractive to design low-cost, ductile, and fully biobased polylactic acid (PLA) composites based on industrial waste lignin for promoting its practical applications in the industry. Unfortunately, existing material strategies often lead to poor processability and low ductility because of weak interfaces between lignin and PLA. Herein, we report a fully biobased functionalized lignin (Lig-g-P(LMA-co-THFMA), or Mlignin) by chem. grafting two bioderived monomers, lauryl methacrylate (LMA), and tetrahydrofurfuryl methacrylate (THFMA) via free-radical polymerization Mlignin exhibits moderately lower melt viscosity and improved formability with PLA as compared with pristine lignin due to better interfacial combability. Because of improved interfacial adhesion, Mlignin is capable of uniformly dispersing within the PLA matrix in a submicron phase size, leading to a “”sea-island”” structure. As a result, the addition of 20 wt % Mlignin increases the ductility by 16 folds (from 12 to 204%) and the toughness by âˆ?1 folds from 4.4 to 54.6 MJ m-3 relative to the PLA matrix. Meanwhile, the PLA/20% Mlignin composite retains a tensile strength of 40.9 MPa. Such largely enhanced ductility and toughness of PLA is mainly attributed to the deformation of Mlignin that can dissipate the fracture energy during the tension process. This work not only offers a simple route to converting industrial waste lignin into value-added biobased fillers for polymers and but also provides a new approach for developing low-cost, ductile, and fully sustainable PLA to further its industrial applications. A new class of fully biobased lignin-derived toughening agents has been developed by graft copolymerization and demonstrated an excellent toughening effect on PLA.

ACS Sustainable Chemistry & Engineering published new progress about Biocomposites. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Formula: C16H30O2.

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

Chen, Jianhua published the artcileBurkholderia cenocepacia ETR-B22 volatile organic compounds suppress postharvest grey mold infection and maintain aroma quality of tomato fruit, SDS of cas: 140-11-4, the main research area is Burkholderia cenocepacia volatile organic suppress postharvest gray mold infection.

Microbial volatile organic compounds (VOCs) are effective biofumigants for controlling postharvest fruit decay. We evaluated the postharvest biofumigation efficacy of the VOCs produced by Burkholderia cenocepacia ETR-B22 for alleviating tomato fruit gray mold and its impact on the fruit quality. The results demonstrated that the VOCs inhibited the hyphal growth and spore germination of pathogen Botrytis cinerea and caused hyphal cell death. Postharvest biofumigation with VOCs significantly decreased disease incidence, disease index, and weight loss of tomato fruit. The antifungal efficacy of the VOCs was affected by growth media substrates, inoculation volume, and concentration Among the analyzed VOC components, di-Me trisulfide was most effective in inhibiting B. cinerea. Biofumigation with VOCs produced by ETR-B22 delayed the deterioration of the nutrition quality of tomato fruit. Metabolomics anal. revealed that the aromatic metabolite profile of postharvest tomato fruit was well-maintained after fumigation with ETR-B22 VOCs. Therefore, B. cenocepacia ETR-B22 VOCs could be used as useful biofumigants for extending postharvest tomato fruit shelf life and controlling gray mold disease.

LWT–Food Science and Technology published new progress about Biofungicides. 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

Hamad, Younis K. published the artcileActivity of plant extracts/essential oils against three plant pathogenic fungi and mosquito larvae: GC/MS analysis of bioactive compounds, Synthetic Route of 140-11-4, the main research area is Fusarium Tectona Rhizoctonia Culex essential oil larvicidal antifungal.

Certain natural products extracted from different parts of medicinal and aromatic plants were examined for their antifungal activity against three plant pathogenic fungi, Fusarium oxysporum, Rhizoctonia solani, and Alternaria solani, and insecticidal activity against mosquito larvae (Culex pipiens). Acetone extract of Tectona grandis showed the highest antifungal activity against R. solani and A. solani with EC50 values of 118 and 294μg/mL, resp. The highest larvicidal activity was displayed by the essential oils of Ocimum basilicum and Eucalyptus gomphocephala with LC50 value of 22, and 30 mg/L, resp. By gas chromatog.- mass spectrometry (GC/MS) anal. 3-allylguaiacol (65.8%) and eugenol acetate (46.6%) were the main compounds in Syzygium aromaticum methanolic extract and essential oil, resp. The main compound in T. grandis acetone extract was cyclohexylpentyl oxalate (8.7%); its water extract contained (E)-4,4-dimethyl-2-pentene (51.1%); E. gomphocephala branch oil contained p-cymene (28.8%); Euphorbia paralias leaf extract contained 1βH-romneine (26.3%); the seed extract contained α-linolenic acid, TMS (15.2%); Punica granatum extract contained furfural (32.1%); and O. basilicum essential oil contained estragole (65.9%). Thus, extracts from the tested plants can be used as natural biofungicides to manage diseases caused by F. oxysporum, R. solani, and A. solani. Addnl., these extracts show potential la rvicide activities against mosquito larvae.

BioResources published new progress about Biofungicides. 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

Cadena-Aizaga, M. Isabel published the artcileAssessment of anthropogenic pollution by UV filters using macrophytes as bioindicators, Computed Properties of 71617-10-2, the main research area is macrophyte bioindicator UV filter anthropogenic pollution; Anthropogenic contamination; Macrophytes; Microwave-assisted extraction; Organic UV filters.

Marine environment pollution has increased in recent decades as a result of anthropogenic activities. Macrophytes can assimilate the compounds dissolved in the water and respond to changes in surround conditions, for that, they can be used as bioindicators of pollution in aquatic environments. Currently organic UV filters have shown ever-increasing in pollution levels in marine ecosystems. The anthropogenic pollution produced by eight organic UV filters in coastal macrophytes was studied. A microwave-assisted extraction (MAE), followed by ultrahigh-performance liquid chromatog. with tandem mass spectrometry (UHPLC-MS/MS) was applied to 76 macrophyte (seaweeds and seagrass) samples from three different beaches on the Gran Canaria Island (Spain), collected for 6 mo. All studied UV filters were found with different detection frequencies from 16% to 100% in macrophyte samples. Octocrylene (OC) was detected in all the analyzed samples throughout the sampling period. The highest concentration, 19,369 ng·g-1 dry weight (dw), was for this compound in the seagrass Cymodocea nodosa. The bioconcentration ratio was determined for several seaweed groups (red, brown, green). Different bioconcentration grades were obtained. Those above 1000 indicated significant accumulation, which increases the possibility of chronic effects on seaweed and at upper tropic levels.

Science of the Total Environment published new progress about Bioindicators. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Computed Properties of 71617-10-2.

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

Saeed, Mohsin Hassan published the artcileEffects of rigid structures containing (meth)acrylate monomers and crosslinking agents with different chain length on the morphology and electro-optical properties of polymer-dispersed liquid crystal films, Application In Synthesis of 142-90-5, the main research area is acrylic polymer liquid crystal film morphol electrooptical property.

This contribution investigates the preparation of polymer-dispersed liquid crystal (PDLC) films based on meth(acrylate) monomers containing rigid structures. The current study specifically focuses on comparison of the monomers on the basis of meth(acrylate) side group, flexible/rigid structures and rigidity. We find that methacrylate monomers exhibit more preferable electro-optic properties than that of the acrylate monomers. Furthermore, through the systematic variation of rigidity, composition of the monomers and chain length of crosslinking agents, both the morphologies and electro-optic properties of these films are found to be adjustable. A composite film is demonstrated by employing moderately rigid monomer (tetrahydrofurfuryl methacrylate) with low driving voltage (21.0 V) and high contrast ratio (87.5). Therefore, the studies here provide a new approach to optimize the electro-optical properties of the PDLC films by introducing monomers with rigid structures.

Journal of Modern Optics published new progress about Birefringence. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application In Synthesis of 142-90-5.

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

Yin, Hanliang published the artcileStudy on the potential contribution of bacterial community on the volatile flavor of Yongfeng chilli paste, Application In Synthesis of 123-29-5, the main research area is Yongfeng chilli paste volatile flavor bacterial community.

The study aimed to explore the contribution of the microbial community on flavor formation by measuring physicochem. properties, volatile compounds composition and bacterial community of Yongfeng chilli paste. A similar amino acid nitrogen level and different pH, total acid and salt content were observed in five brands of Yongfeng chilli paste. A total of 106 volatile compounds were identified, wherein, Et palmitate, Et trans-4-decenoate, phenylethyl alc. were the common volatile compounds with high content in all samples. Addnl., Oxyphotobacteria-unclassified, Mitochondria-unclassified, Pediococcus, Bacillus, Lactobacillus and Weissella were the dominant genera. Lactobacillus was related to the production of some alcs. and terpenes. Whereas, Bacillus, Pediococcus and Weissella, which showed higher salt tolerance, could affect the formation of esters, such as Et salicylate, Et lactate. Thus, this study provided a basis for further research on the mechanism of flavor formation and some guidance for the improvements of the quality of traditional fermented chilli paste.

International Journal of Food Science and Technology published new progress about Acinetobacter. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Application In Synthesis of 123-29-5.

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

Yin, Hanliang published the artcileStudy on the potential contribution of bacterial community on the volatile flavor of Yongfeng chilli paste, HPLC of Formula: 41114-00-5, the main research area is Yongfeng chilli paste volatile flavor bacterial community.

The study aimed to explore the contribution of the microbial community on flavor formation by measuring physicochem. properties, volatile compounds composition and bacterial community of Yongfeng chilli paste. A similar amino acid nitrogen level and different pH, total acid and salt content were observed in five brands of Yongfeng chilli paste. A total of 106 volatile compounds were identified, wherein, Et palmitate, Et trans-4-decenoate, phenylethyl alc. were the common volatile compounds with high content in all samples. Addnl., Oxyphotobacteria-unclassified, Mitochondria-unclassified, Pediococcus, Bacillus, Lactobacillus and Weissella were the dominant genera. Lactobacillus was related to the production of some alcs. and terpenes. Whereas, Bacillus, Pediococcus and Weissella, which showed higher salt tolerance, could affect the formation of esters, such as Et salicylate, Et lactate. Thus, this study provided a basis for further research on the mechanism of flavor formation and some guidance for the improvements of the quality of traditional fermented chilli paste.

International Journal of Food Science and Technology published new progress about Acinetobacter. 41114-00-5 belongs to class esters-buliding-blocks, name is Ethyl pentadecanoate, and the molecular formula is C17H34O2, HPLC of Formula: 41114-00-5.

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

Chuang, Lu-Te published the artcileIn vitro and in vivo screening of wild bitter melon leaf for anti-inflammatory activity against cutibacterium acnes, Category: esters-buliding-blocks, the main research area is Momordica Cutibacterium leaf antiinflammatory; Cutibacterium acnes; anti-inflammation; wild bitter melon (WBM); β-ionone.

In this study, we examined the suppressive effect of a methanolic extract (ME) of WBM leaf and fractionated components thereof on live C. acnes-induced in vitro and in vivo inflammation. Using a bioassay-monitored isolation approach and a combination of liquid-liquid extraction and column chromatog., the ME was then separated into n-hexane, Et acetate, n-butanol and water-soluble fractions. The hexane fraction exerted the most potent anti-inflammatory effect, suppressing C. acnes-induced interleukin-8 (IL-8) production by 36%. The ethanol-soluble fraction (ESF), which was separated from the n-hexane fraction, significantly inhibited C. acnes-induced activation of mitogen-activated protein kinase (MAPK)-mediated cellular IL-8 production Similarly, the ESF protected against C. acnes-stimulated mouse ear swelling, as measured by ear thickness (20%) and biopsy weight (23%). Twenty-four compounds in the ESF were identified using gas chromatograph-mass spectrum (GC/MS) anal. Using co-cultures of C. acnes and THP-1 cells, β-ionone, a compound of the ESF, reduced the production of IL-1β and IL-8 up to 40% and 18%, resp. β-ionone also reduced epidermal microabscess, neutrophilic infiltration and IL-1β expression in mouse ear. We also found evidence of the presence of anti-inflammatory substances in an unfractionated phenolic extract of WBM leaf, and demonstrated that the ESF is a potential anti-inflammatory agent for modulating in vitro and in vivo C. acnes-induced inflammatory responses.

Molecules published new progress about Acne vulgaris. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Category: esters-buliding-blocks.

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

Sukkanon, Chutipong published the artcileCananga odorata (Magnoliales: Annonaceae) essential oil produces significant avoidance behavior in mosquitoes, Quality Control of 140-11-4, the main research area is Cananga essential oil repellent Culex Aedes Anopheles; Aedes ; Culex ; excito-repellency ; Anopheles; repellent.

Essential oil of Cananga odorata Hook. F. & Tomson is a source of insect repellent, but contact irritancy and noncontact repellency actions that stimulate insect’s avoidance behavior (escape away from chem. source after direct phys. contact or without making phys. contact, resp.) have not been investigated. Therefore, an excito-repellency test chamber was used for measuring avoidance behavior of four insectary-reared mosquito species (Diptera: Culicidae) that escape from esposure to four concentrations (0.5, 1.0, 2.5, and 5.0% volume/volume) of C. odorata oil. The oil strongly repelled both Culex quinquefasciatus Say (85-97% escape) and Anopheles minimus Theobald (97-99%) at high concentrations (2.5-5.0%). For Anopheles dirus Peyton & Harrison and Aedes aegypti (L.), highest repellency (64 and 39% escape, resp.) was demonstrated at 2.5% concentration For contact irritancy, the oil produced relatively high percent escape found in Cx. quinquefasciatus (90-100% escape) and An. minimus (83-100%). Whereas moderate contact irritancy was observed against An. dirus (40-50% escape) and Ae. aegypti (51-59%). The percent escape was then adjusted with repellency to estimate the effect of contact irritancy alone. We found that highest contact irritancy was presented at 0.5% concentration against An. minimus (67% escape). Knockdown and toxic actions were only found in Anopheles mosquitoes at 5.0% concentration The results revealed that An. minimus and Cx. quinquefasciatus were more prone to be repelled by C. odorata oil. Detailed anal. of oil identified primary compounds as Me benzoate (14.6%), α-gurjunene (12.8%), p-methyl-anisole (11.3%), and benzyl acetate (9.9%). Further investigations are needed to assess excito-repellency actions of these compounds alone or in combination.

Journal of Medical Entomology published new progress about Aedes aegypti. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Quality Control of 140-11-4.

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