Esters-buliding-blocks

Liu, Jian published the artcileCharacterization of major properties and aroma profile of kiwi wine co-cultured by Saccharomyces yeast (S. cerevisiae, S. bayanus, S. uvarum) and T. delbrueckii, Computed Properties of 106-32-1, the main research area is Saccharomyces Torulaspora kiwi wine aroma flavor.

The effect of different yeast strains on the quality of kiwi wine was investigated by polyphase determine approaches in the present research. The influence of co-culture and inoculation sequence on the quality was also explored simultaneously. Results suggested that the characteristics of the kiwi wine were affected by the metabolic characteristic of strains. The flavor content and their flavor profile of samples fermented by co-culturing of strain among species, genus, and families. When Saccharomyces bayanus (Y5 or Y6) co-cultured with Torulaspora delbrueckii Y7, the ratio of phenethyl alc. increased, but that of octanoic acid and Et octanoate decreased significantly. The odor activity value (OAV) of Et octanoate and Et hexanoate was increased by co-culturing Saccharomyces with T. delbrueckii, and that of decanal and terpinen-4-ol was enhanced by co-culturing of different strains of Saccharomyces. It was an excepting process to obtain high quality of kiwi wine by co-culturing technol. of yeasts, and was very effective to optimize the process by polyphase anal. approaches.

European Food Research and Technology published new progress about Acids Role: FFD (Food or Feed Use), BIOL (Biological Study), USES (Uses). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Computed Properties of 106-32-1.

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

Zhang, Xiao published the artcileComparative evaluation of the effects of natural and artificial inoculation on soybean paste fermentation, Related Products of esters-buliding-blocks, the main research area is soybean paste natural artificial inoculation fermentation.

Soybean pastes fermented with natural (NIS) and artificial (AIS) inoculation were prepared to evaluate their fermentation characteristics, flavor compounds and microbial community compositions across an entire fermentation period. The results showed that the initial concentrations of free amino acids and aroma compounds were higher in NIS than in AIS, whereas it was opposite at the end of fermentation A larger variation of flavor compounds was observed in AIS, which was associated with higher level of microbial metabolism during AIS fermentation Penicillium and Tetragenococcus were the dominant microbial genera in NIS, while Aspergillus and Pediococcus were predominant in AIS. Correlation anal. of flavor compounds and microbial community dynamics during NIS and AIS fermentation revealed the specific role of microbial taxa in metabolite transformations. Pediococcus acidilactici could be the key microorganism strongly associated with 23 flavor compounds during AIS fermentation Further, Aspergillus oryzae and Pediococcus acidilactici were primarily linked to amino acid metabolism in AIS, whereas Penicillium and Yaniella were found associated with aroma compounds, Tetragenococcus_sp_JNURIC_D6 and Candida solani with that of organic acids in NIS. These findings provide substantial data on the development of flavor-enhancing fermentation starter culture and the better control of flavor ripening in soybean paste production

LWT–Food Science and Technology published new progress about Acids Role: FFD (Food or Feed Use), BIOL (Biological Study), USES (Uses). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Related Products of esters-buliding-blocks.

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

Zhao, Jing published the artcileVolatile constituents and ellagic acid formation in strawberry fruits of selected cultivars, Category: esters-buliding-blocks, the main research area is volatile constituent ellagic acid formation strawberry fruit cultivar; Ellagic acid; Fragaria × ananassa; GC–MS; Sensory quality; Volatile profile.

Strawberries (Fragaria x ananassa Duch.) are considered a functional food and pleasing fruit in China, mainly because of their high concentration of ellagic acid (EA) and their aroma. A total of 127 volatile compounds were identified by HS-SPME-GC-MS. Changes in volatile constituents and EA were investigated in 50 strawberry cultivars in the red-ripening stage and in 6 cultivars, including ‘Benihoppe’, ‘Snow White’, ‘Yanli’, ‘Kaorino’, ‘Tokun’, and ‘Xiaobai’, at four developmental stages. The results indicated that the components and amounts of volatile compounds and EA markedly varied among and within cultivars. Through multivariate statistical anal. of the volatile compounds, 50 cultivars were divided into 4 clusters. Aromatic components that affected the cluster formation of cultivars were detected. Volatile compounds varied quant. among the 6 varieties during the developmental stages, and distinct changes were observed in both red-turning fruits and red-ripening fruits compared with white fruits. Except for ‘Xiaobai’, which showed the highest EA content at the red-ripening stage, the other 5 cultivars exhibited the highest EA level at the large green fruit stage. Partial least squares-discriminant anal. (PLS-DA) of the profiles of volatile compounds indicated that large green fruits were characterized by EA and aldehydes; white fruits were characterized by ketones and alkanes; and red-ripening fruits were characterized by esters, acids, furans, and alcs. The results contribute new and important information to breeding programs and the desirable cultivation of strawberry production

Food Research International published new progress about Acids Role: AGR (Agricultural Use), BIOL (Biological Study), USES (Uses). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Category: esters-buliding-blocks.

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

Satake, Akiharu published the artcileCyclopropanation of ketene silyl acetals with allylic acetates using η3-allylpalladium-pyridinylimidazole catalysts, COA of Formula: C9H16O2, the main research area is cyclopropanation ketene silyl acetal allyl acetate; stereoselective cyclopropanation cyclopropanation ketene silyl acetal allyl acetate; stereochem cyclopropanation ketene silyl acetal allyl acetate; phenyl cyclopropane preparation.

Highly selective cyclopropanation of ketene silyl acetals with allylic acetates was carried out in the presence of novel η3-allylpalladium-pyridinylimidazole complexes and sodium acetate in DMSO at room temperature When cinnamyl acetate was used as an allylic acetate, phenylcyclopropane derivative was obtained stereoselectively in 83% yield.

Chemistry Letters published new progress about Acetals, ketene Role: RCT (Reactant), RACT (Reactant or Reagent) (silyl). 86549-27-1 belongs to class esters-buliding-blocks, name is Ethyl 2,2-dimethylpent-4-enoate, and the molecular formula is C9H16O2, COA of Formula: C9H16O2.

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

Herliana published the artcileTransesterification of coconut oil (Cocos nucifera L.) into biodiesel using zeolite-A catalyst based on rice husk silica and aluminum foil, SDS of cas: 111-11-5, the main research area is Cocos zeolite aluminum foil biodiesel transesterification.

In this research, zeolite-A was synthesized by hydrothermal method using silica of rice husk and aluminum foil as raw materials. For zeolite preparation, a particular amount of silica was dissolved in NaOH solution which is then aged with variation time of 24-96 h, the mixed solution was then added with aluminum foil and again aged for 24 h, the crystallization process was carried out in an oven of 100°C 96 h. The resulting zeolite was then calcined at 550°C for 6 h. The zeolite characterization by XRD showed that zeolite-A had been formed and had characteristics following the zeolite-A standard from IZA. The resulting zeolite-A has good crystallinity as indicated by the sharp peaks on the resulting diffractogram. The zeolite-A catalytic test on transesterification of coconut oil showed high catalyst performance, characterized by the conversion of fatty acids in coconut oil to Me esters with 100% conversion percent. The formation of the Me ester was proven based on the results of the anal. with FTIR and GCMS which showed the characteristics of Me ester at wavenumbers 1744 cm-1 (C=O), 2922 cm-1 (C-H), 1170 cm-1 (C-O), with the highest percentage in the form of Me laurate at 31.80%.

Journal of Physics: Conference Series published new progress about A zeolites Role: TEM (Technical or Engineered Material Use), USES (Uses). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, SDS of cas: 111-11-5.

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

Herliana published the artcileTransesterification of coconut oil (Cocos nucifera L.) into biodiesel using zeolite-A catalyst based on rice husk silica and aluminum foil, Recommanded Product: Methyl decanoate, the main research area is Cocos zeolite aluminum foil biodiesel transesterification.

In this research, zeolite-A was synthesized by hydrothermal method using silica of rice husk and aluminum foil as raw materials. For zeolite preparation, a particular amount of silica was dissolved in NaOH solution which is then aged with variation time of 24-96 h, the mixed solution was then added with aluminum foil and again aged for 24 h, the crystallization process was carried out in an oven of 100°C 96 h. The resulting zeolite was then calcined at 550°C for 6 h. The zeolite characterization by XRD showed that zeolite-A had been formed and had characteristics following the zeolite-A standard from IZA. The resulting zeolite-A has good crystallinity as indicated by the sharp peaks on the resulting diffractogram. The zeolite-A catalytic test on transesterification of coconut oil showed high catalyst performance, characterized by the conversion of fatty acids in coconut oil to Me esters with 100% conversion percent. The formation of the Me ester was proven based on the results of the anal. with FTIR and GCMS which showed the characteristics of Me ester at wavenumbers 1744 cm-1 (C=O), 2922 cm-1 (C-H), 1170 cm-1 (C-O), with the highest percentage in the form of Me laurate at 31.80%.

Journal of Physics: Conference Series published new progress about A zeolites Role: TEM (Technical or Engineered Material Use), USES (Uses). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Recommanded Product: Methyl decanoate.

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

Feng, Dedang published the artcileComparison of volatile compounds between wild and cultivated roses, Category: esters-buliding-blocks, the main research area is volatile compound wild cultivated rose.

Rose (Rosa L.) is an economically important ornamental genus that has been cultivated for its scent for the perfume industry since antiquity. However, most modern roses have lost their fragrance during the later stages of the breeding process. Here, 59 species of Rosa, including 24 wild Rosa species, 20 Chinese old garden roses, and 15 modern roses, were examined by headspace solid-phase microextraction and gas chromatog.-mass spectrometry. Fifty-three volatile organic compounds (VOCs), including terpenoids, benzenoids/phenylpropanoids, and fatty acid derivatives, were detected with qual. and quant. analyses. Thirteen common components, including geraniol, citronellol, 2-phenylethanol, 3,5-dimethoxytoluene, 1,3,5-trimethoxybenzene, germacrene D, and cis-3-hexenyl acetate, were found. Furthermore, different wild species or cultivars showed different characteristic compounds 3,5-Dimethoxytoluene and 1,3,5-trimethoxybenzene were the main compounds in Rosa odorata and Rosa chinensis, which are the original parents of modern roses. 2-Phenylethanol, citronellol, and geraniol were the main aromatic compounds in Rosa damascene and Rosa centifolia. Me salicylate, eugenol, Me eugenol, and benzyl acetate were lost during domestication and breeding of wild Rosa species to Chinese old garden roses and then to modern cultivars. Geranyl acetate, neryl acetate, and dihydrob-ionol were gained during this time and showed higher amounts across the rose breeding process. Natural and breeding selection may have caused volatile compound gains and losses. These findings provide a platform for mining scent-related genes and for breeding improved ornamental plants with enhanced flower characteristics to develop new essential oil-producing plants.

HortScience published new progress about Benzenoid aromatic compounds Role: ANT (Analyte), ANST (Analytical Study). 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

Bai, Yuanqi published the artcileDevelopment of skeletal mechanism for four-component biodiesel surrogate fuel with polycyclic aromatic hydrocarbon, Category: esters-buliding-blocks, the main research area is skeletal mechanism biodiesel fuel polycyclic aromatic hydrocarbon methyl decanoate.

A four-component skeletal mechanism consisting of 1,4-hexadiene, Me decanoate, Me trans-3-hexenoate, n-hexadecane was developed to represent biodiesel fuel from various sources. The Me decanoate and n-hexadecane were selected to represent saturated fatty acid Me esters, and trans-3-hexenoate and 1,4-hexadiene were applied to adjust degree of unsaturation A skeletal mechanism for this four-component biodiesel surrogate fuel with PAH was first formulated based on decoupling methodol., which contained a detailed C1 mechanism, a reduced C2-C3 mechanism, PAH mechanism and sub-mechanisms of four surrogate fuels, including 314 reactions and 98 species. After that, the skeletal mechanism was widely verified against various fundamental combustion experiments for each pure component and their mixtures Furthermore, the exptl. results of biodiesel soot volume fractions from biodiesel spray combustion in a constant-volume combustion vessel were used to verify the accuracy of the mechanism, and the skeletal mechanism was also coupled into the CFD-software to simulate the combustion characteristics of a diesel engine. Results showed that the calculated results agreed well with the exptl. data including ignition delay times (IDTs), primary species concentrations, laminar flame speed, soot prediction and in-cylinder pressure of the engine. Overall, the developed compact skeletal mechanism was suitable for the combustion simulation of biodiesel fuel.

Renewable Energy published new progress about Animal fats Role: TEM (Technical or Engineered Material Use), USES (Uses). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Category: esters-buliding-blocks.

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

Prakash, Amruta published the artcileUltraviolet induced random mutagenesis in Bacillus amyloliquefaciens (MF 510169) for improving biodiesel production, Formula: C11H22O2, the main research area is UV mutagenesis bacillus amyloliquefaciens biodiesel production.

The present study aims to mutate Bacillus amyloliquefaciens (MF 510169) randomly for improving lipid accumulation towards green and efficient transformation of bacterial oil into biodiesel. The cellular lipid content of wild type Bacillus strain is improved by exposing the strain to UV light at 254 nm (UV-C) and 365 nm (UV-A) wavelengths for different time intervals from 20 to 380 s. A remarkable increase in lipid content is noted with increase in cell dry weight when exposed to UV-C with 320 s exposure time. The accumulated lipids are extracted and transesterified through acid catalyst (H2SO4, 1.52%) by various means for biodiesel production The chem. profiling of thus obtained biodiesel has been done by employing various spectroscopic techniques. The phys. and chem. properties of thus transesterified biodiesel are well-matching 86-90% with International ASTM standards The antioxidant stability of produced biodiesel tested with an addition of synthetic antioxidants remains stable for 25 d.

Fuel published new progress about Animal fats Role: TEM (Technical or Engineered Material Use), USES (Uses). 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

Tang, Ke published the artcileChemical and sensory characterization of cabernet sauvignon wines from the Chinese loess plateau region, Name: Ethyl 3-hydroxybutanoate, the main research area is cabernet sauvignon wine chem sensory profile China; Cabernet Sauvignon; GC–O; Loess Plateau; aroma; sensory profile.

In this study, the aroma profiles of Cabernet Sauvignon wines from a new grape growing region, Loess Plateau, China, were established by gas chromatog.-olfactometry, gas chromatog.-mass spectrometry and sensory anal. The sensory profiles of wines form five different young vineyards in the Loess Plateau region were obtained by descriptive anal. Blackcurrant (p < 0.01), pear and dried plum (p < 0.05), mushroom, smoked and green pepper (p < 0.1) had significant differences on the five vineyards. A total of 76 odor-active aroma compounds were identified in the wines, and 45 volatile compounds were selected as those having the greatest impact on the aroma components and these were quantitated by five different methods. In addition, the correlation model of the Loess Plateau region's sensory characteristics and aroma compounds was established by partial least squares regression (PLSR) to determine the influence of various aroma active substances on aroma attributes. Molecules published new progress about Acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 5405-41-4 belongs to class esters-buliding-blocks, name is Ethyl 3-hydroxybutanoate, and the molecular formula is C6H12O3, Name: Ethyl 3-hydroxybutanoate.

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