Tag: M.W=150-200

Huang, Mingzheng published the artcileComparative characterization and sensory significance of volatile compounds in Rosa roxburghii Tratt fruit from five geographic locations in Guizhou, China, Name: Ethyl octanoate, the main research area is Rosa roxburghii Tratt fruit volatile compound sensory Guizhou China.

Rosa roxburghii Tratt (Chestnut rose) is native to China where it is cultivated for its strongly aromatic hips (pseudo fruits); locally known as cili. Increasing interest in cili for food and beverage products prompted an evaluation of its aroma compounds and the influence of geog. source. Accordingly, the volatile compounds in cili from five locations in Guizhou province were analyzed by headspace-solid-phase microextraction coupled with gas chromatog.-mass spectrometry. Sixty-seven volatile compounds were identified. Principal component anal. distinguished three sample groups by geog. source. The aroma of cili juice from each location was characterized by quant. descriptive anal. using six odor descriptors. Cili aroma was predominantly sweet/fruity, floral and green, but geog. source significantly influenced the intensity of the sweet/fruity and floral notes. Odor activity analyses indicated that 40 volatile compounds contribute appreciably to the aroma of cili. Of those compounds, only ten esters, two aldehydes, one alc. and one aromatic compound were common to all regional samples. Those findings extend the range of volatiles detected in cili. These results identify those that are present in odor active amounts and provide the first evidence of the impact of geog. source on the aroma and flavor of cili.

Flavour and Fragrance Journal 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, Name: Ethyl octanoate.

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

Huang, Mingzheng published the artcileComparative characterization and sensory significance of volatile compounds in Rosa roxburghii Tratt fruit from five geographic locations in Guizhou, China, Recommanded Product: Benzyl acetate, the main research area is Rosa roxburghii Tratt fruit volatile compound sensory Guizhou China.

Rosa roxburghii Tratt (Chestnut rose) is native to China where it is cultivated for its strongly aromatic hips (pseudo fruits); locally known as cili. Increasing interest in cili for food and beverage products prompted an evaluation of its aroma compounds and the influence of geog. source. Accordingly, the volatile compounds in cili from five locations in Guizhou province were analyzed by headspace-solid-phase microextraction coupled with gas chromatog.-mass spectrometry. Sixty-seven volatile compounds were identified. Principal component anal. distinguished three sample groups by geog. source. The aroma of cili juice from each location was characterized by quant. descriptive anal. using six odor descriptors. Cili aroma was predominantly sweet/fruity, floral and green, but geog. source significantly influenced the intensity of the sweet/fruity and floral notes. Odor activity analyses indicated that 40 volatile compounds contribute appreciably to the aroma of cili. Of those compounds, only ten esters, two aldehydes, one alc. and one aromatic compound were common to all regional samples. Those findings extend the range of volatiles detected in cili. These results identify those that are present in odor active amounts and provide the first evidence of the impact of geog. source on the aroma and flavor of cili.

Flavour and Fragrance Journal published new progress about Acids Role: FFD (Food or Feed Use), BIOL (Biological Study), USES (Uses). 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

Song, Yaru published the artcileComparison of volatile compounds and fatty acids of jujubes (Ziziphus jujuba mill.) before and after blackening process, Application In Synthesis of 110-42-9, the main research area is volatile compound fatty acids jujubes Ziziphus jujuba blackening process.

Blackened jujube, as an emerging fruit processed product, was obtained from red jujube by a blackening processing of Maillard reaction with high humidity and temperature This study was to compare the volatile compounds (VOCs) and fatty acids (FAs) between red jujubes (RJs) and blackened jujubes (BJs) of six cultivars (JZ, MZ, JSXZ, HZ, YHDZ and TZ) using headspace solid-phase microextraction gas chromatog.-mass spectrometry (HS-SPME-GC-MS) and GC-MS resp. A total of 56 VOCs were detected in these six cultivars (RJs and BJs), and their types and contents were analyzed. A total of 22 FAs, including 12 saturated fatty acids (SFAs) and 10 unsaturated fatty acids (USFAs), was determined in the RJs and BJs, The content of essential FAs in BJs was higher. B-JZ had the greatest increase in linoleic and -linolenic from 5.3 mg/100 g to 10.0 mg/100 g and from 3.4 mg/100 g to 5.1 mg/100 g, resp. It indicated that JZ is better for improving flavor and the composition of FAs by blackening process than other five cultivars. In addition, FAs and VOCs were found to have a linear correlation with color. The types of VOCs and FAs between red and blackened jujubes were also discriminated using principal component anal. (PCA).

International Journal of Food Properties published new progress about Acids Role: FFD (Food or Feed Use), BIOL (Biological Study), USES (Uses). 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

Simonato, Barbara published the artcileEffects of post-harvest fungal infection of apples on chemical characteristics of cider, Related Products of esters-buliding-blocks, the main research area is fungal infection apple cider.

The impact of fungal post-harvest infection of apple on the chem. composition of cider was investigated through a comparative anal. of ciders obtained from apples (Gala variety) sep. infected by five fungal species (Alternaria alternata, Botrytis cinerea, Diplodia seriata, Monilinia fructigena, and Penicillium expansum) and cider from sound apples. The content of several flavor-active mols. belonging to different chem. groups, such as alcs., esters, acids, aldehydes, phenols, and lactones, significantly varied among ciders. Particularly, cider from sound apples had a higher concentration of Et ester acetate, fatty acid Et esters and fatty acids, mols. that contribute to fruity and sweet scent. Principal component anal. well discriminated ciders, evidencing species-specific fungal effect. Differences in precursor availability in juices and biosynthesis pathways in fungi could explain changes in aroma profile of ciders. This study provides information on the potential risk to produce cider from infected apples due to the possible quality depreciation.

LWT–Food Science and Technology published new progress about Acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Tang, Ke published the artcileChemical and sensory characterization of cabernet sauvignon wines from the Chinese loess plateau region, Category: esters-buliding-blocks, 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). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, 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

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

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

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

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