Esters-buliding-blocks

Karabagias, Ioannis K. published the artcileVolatile fingerprints of common and rare honeys produced in Greece: in search of PHVMs with implementation of the honey code, Name: Ethyl nonanoate, the main research area is honey volatile metabolite phenols terpenes norisoprenoids.

A non-targeted metabolomic methodol. using gas chromatog. coupled to mass spectrometry in combination with headspace solid-phase microextraction was applied for the identification of pharmaceutical honey volatile metabolites. Common and rare honeys (citrus, fir, honeydew, pine, thyme, asfaka, arbutus, chestnut, and cotton), in a total of 32 samples, were collected from different regions in Greece. Seventy-three volatile organic compounds (VOCs) were identified and semi-quantified using the internal standard method. Among volatiles, the norisoprenoid 3,4,6,6-tetramethylbicyclo[3.2.1]oct-3-ene-2,8-dione, was identified for the first time to contribute to Greek honey aroma. Pharmaceutical VOCs of interest included: terpenes, norisoprenoids benzene derivatives/phenolic volatiles and other compounds The content of such metabolites was affected by honey’s botanical origin (p < 0.05). The honey code was developed to construe differences among honey varieties with respect to semi-quant. data of pharmaceutical volatile metabolites. The exploitation of natural organic compounds for the treatment of diseases is of great value. European Food Research and Technology published new progress about Abies. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Name: Ethyl nonanoate.

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

Tang, Zhong-Sheng published the artcileCharacterization of aroma profile and characteristic aromas during lychee wine fermentation, Product Details of C17H34O2, the main research area is lychee wine fermentation citronellol methionol rose oxide aroma.

Characteristic aroma substances of cis-rose oxide imparts the odorant of “”lychee-like,”” while of citronellol is the precursor of it in lychee. The characterization of volatiles of lychee wine fermentation using headspace solid-phase microextraction gas chromatog.-mass spectrometry combined with headspace gas chromatog.-ion mobility spectrometry were done to regulate processing. Results indicated that the total of 97 volatiles (38 in common) were observed during fermentation, including 39 terpenoids, 5 alcs., 22 esters, 4 acids, 7 alkenes, 4 ketones and ethers, 3 sulfur compounds and others. Losses of characteristic aromas mainly occurred during primary fermentation more than threefold decrease. The volatility of cis-rose oxide was stronger than citronellol, which implied that more gentle processing should be performed to protect lychee flavor. Cis-rose oxide was a mixture of monomer and dimer with unequal proportion, while citronellol was a monomer in lychee. The work provides important new information on aroma development during fermentation Practical applications : Fruit consumption, among which tropical fruit-based products have gained huge popularity in the recent years. The main high value-added processed products of lychee pulp are lychee wine and vinegar; however, the typical aroma always decreased or disappeared during fermentation Therefore, this study aims at providing more information for product improvement and process development.

Journal of Food Processing and Preservation published new progress about Litchi. 41114-00-5 belongs to class esters-buliding-blocks, name is Ethyl pentadecanoate, and the molecular formula is C17H34O2, Product Details of C17H34O2.

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

Quan, Wenxuan published the artcileDynamics of volatile organic compounds in Masson pine (Pynus massonyana Lamb.) seedling needles under drought stress, Application In Synthesis of 111-11-5, the main research area is Pinus drought stress volatile organic compound seedling.

The aim of this study is to evaluate whether volatile organic compounds (VOCs) of Masson pine adapted their physiol. responses under drought stress or not. The needle length, root length, root/shoot ratio and the VOCs of Masson pine seedlings under drought stress were investigated by comprehensive two-dimensional gas chromatog. time of flight mass spectrometry (GCxGC-TOFMS). The results showed that the growth index was enhanced with the increase of stress strength, and the seedling growth, biomass, needle length, and root length were inhibited compared with the well-watered treatment. The amounts of total VOCs under drought stress were increased, the concentration of terpenoids, acids and esters, under drought stress were higher than the well-watered treatment, but the concentration of alcs. and carbonyl compounds was slightly decreased under the moderate drought treatment. Light drought, moderate drought, and severe drought compared with the well-watered treatment, increased the release of VOCs by 49, 50, and 49%, resp. The results show a key role of the VOCs released in the needles and therefore play a possible key role in drought resistance. This study provides evidence that the needles of Masson pine release more VOCs to adapt to drought conditions.

Pakistan Journal of Botany published new progress about Growth. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application In Synthesis of 111-11-5.

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

Quan, Wenxuan published the artcileDynamics of volatile organic compounds in Masson pine (Pynus massonyana Lamb.) seedling needles under drought stress, Recommanded Product: Methyl decanoate, the main research area is Pinus drought stress volatile organic compound seedling.

The aim of this study is to evaluate whether volatile organic compounds (VOCs) of Masson pine adapted their physiol. responses under drought stress or not. The needle length, root length, root/shoot ratio and the VOCs of Masson pine seedlings under drought stress were investigated by comprehensive two-dimensional gas chromatog. time of flight mass spectrometry (GCxGC-TOFMS). The results showed that the growth index was enhanced with the increase of stress strength, and the seedling growth, biomass, needle length, and root length were inhibited compared with the well-watered treatment. The amounts of total VOCs under drought stress were increased, the concentration of terpenoids, acids and esters, under drought stress were higher than the well-watered treatment, but the concentration of alcs. and carbonyl compounds was slightly decreased under the moderate drought treatment. Light drought, moderate drought, and severe drought compared with the well-watered treatment, increased the release of VOCs by 49, 50, and 49%, resp. The results show a key role of the VOCs released in the needles and therefore play a possible key role in drought resistance. This study provides evidence that the needles of Masson pine release more VOCs to adapt to drought conditions.

Pakistan Journal of Botany published new progress about Growth. 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

Bueyueksirit-Bedir, Tuba published the artcileAroma profile and phenolic content of honey wine produced from Wild Rose Fruit, Application In Synthesis of 111-11-5, the main research area is Rosa fruit juice honey wine aroma phenolics.

In this study, two chromatog. techniques were applied to determine the aroma profile and phenolic compounds of “”Honey wine”” produced by addition of Wild Rose Fruits (Rosa odorata-Andrews-Sweet). In addition, another control wine was produced with sucrose and rose fruits in order to differentiate compounds produced by yeast fermentation from those originated from honey and rose fruits. After maturation aroma components, phenolic compounds and sugar composition of wines were identified. Aroma components were determined by headspace solid-phase microextraction gas chromatog. mass spectrometry (HS-SPME/GC-MS) techniques in wine samples. The dominant aroma components in both wines were ethanol, Et acetate, iso-Bu alc., 2-methyl-1-butanol, 3-methyl-1-butanol, Et caprylate, Et decanoate, capronate Et. Some minor differences in the percentage of major aroma components were determined between two wine samples. Phenolic and sugar compositions were identified by high performance liquid chromatog. (HPLC) method in fruit extract and wine samples. While the total amount of phenolic compounds were 3604.9 mg/l in fruit juice, 74.3 mg/l in control wine and 111.8 mg/l in honey wine, the most abundant phenolics in both wines were catechin, epicatechin and routine.

Journal of Scientific & Industrial Research published new progress about Fruits. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application In Synthesis of 111-11-5.

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

Mulero, A. published the artcileRecommended Correlations for the Surface Tension of Aromatic, Polyfunctional, and Glyceride Esters, Category: esters-buliding-blocks, the main research area is aromatic polyfunctional glyceride ester surface tension correlation.

Surface tension values for 79 esters, including aromatics, polyfunctional, and glycerides, have been compiled from databases, books, and papers in the literature. The data have been carefully screened, and finally, 1517 values were selected. Each fluid dataset has been fitted with the Guggenheim-Katayama correlation with two or four adjustable parameters. Recommended correlations are proposed for each ester, providing mean absolute deviations below 0.50 mN/m for 77 of them, mean absolute percentage deviations below 1.7% for 76 of them, and percentage deviations below 10%, except for four data out of the 59 selected for tricaprylin. The highest deviations found are due to the disagreement between the data obtained from different sources and not to an inadequate math. form of the correlation model. These correlations are added to the collection of those previously proposed for different fluids, including common substances, alcs., refrigerants, organic acids, n-alkanes, and 80 other esters. (c) 2022 American Institute of Physics.

Journal of Physical and Chemical Reference Data published new progress about Fluids. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Category: esters-buliding-blocks.

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

Mulero, A. published the artcileRecommended Correlations for the Surface Tension of Aromatic, Polyfunctional, and Glyceride Esters, Category: esters-buliding-blocks, the main research area is aromatic polyfunctional glyceride ester surface tension correlation.

Surface tension values for 79 esters, including aromatics, polyfunctional, and glycerides, have been compiled from databases, books, and papers in the literature. The data have been carefully screened, and finally, 1517 values were selected. Each fluid dataset has been fitted with the Guggenheim-Katayama correlation with two or four adjustable parameters. Recommended correlations are proposed for each ester, providing mean absolute deviations below 0.50 mN/m for 77 of them, mean absolute percentage deviations below 1.7% for 76 of them, and percentage deviations below 10%, except for four data out of the 59 selected for tricaprylin. The highest deviations found are due to the disagreement between the data obtained from different sources and not to an inadequate math. form of the correlation model. These correlations are added to the collection of those previously proposed for different fluids, including common substances, alcs., refrigerants, organic acids, n-alkanes, and 80 other esters. (c) 2022 American Institute of Physics.

Journal of Physical and Chemical Reference Data published new progress about Fluids. 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

Jin, Jing published the artcileDetermination of Volatiles in Rosa Rugosa by Knitting Aromatic Polymer – Polydopamine (KAP@PDA) Solid-Phase Microextraction (SPME) and Multidimensional Gas Chromatography – Mass Spectrometry (MDGC-MS), Recommanded Product: Methyl octanoate, the main research area is Rosa phenylethyl alcoho volatile compound polydopamine.

The volatile compounds in Rosa rugosa ‘Zi Zhi’, R. rugosa ‘Feng Hua’, and R. cv ‘Crimson Glory’ from three regions were determined by two-dimensional gas chromatog. with quadrupole time-of-flight mass spectrometry coupled with knitting aromatic polymer – polydopamine (KAP@PDA) solid-phase microextraction 82 compounds were identified by peak matching and retention indexes, and R. cv ‘Crimson Glory’ contained the most volatile components. D-Limonene (up to 5131μg kg-1), benzyl alc. (up to 16,510μg kg-1), benzeneacetaldehyde (up to 13,820μg kg-1), phenylethyl alc. (up to 49,020μg kg-1) and citronellol (up to 7129μg kg-1) were the major constituents in all R. rugosa species. In addition, benzaldehyde was highly abundant in R. cv ‘Crimson Glory’ (up to 23,130μg kg-1). The primary volatile components responsible for the differences among the three R. rugosa cultivars and regions were distinguished by orthogonal partial least-squares discriminant anal. The results suggested that phenylethyl alc. contributed the most in distinguishing aroma quality for R. rugosa cultivars and those from different regions.

Analytical Letters published new progress about Flower. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Recommanded Product: Methyl octanoate.

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

Srinivasa Suryakoppa, Kaveesha published the artcilePhytochemical analysis of UV active and inactive bioactive compounds present in Polianthes tuberosa (Linn.) flower, Quality Control of 140-11-4, the main research area is Polianthes flowers phytoconstituents petals stamens ovary; Polianthes tuberosa L; UV active compounds; UV inactive compounds; method development; phytochemical analysis.

Polianthes tuberosa (Linn.) is traditionally considered an ornamental and medicinal plant worldwide. However, extensive studies on its phytochem. composition are very limited. Hence the present work aims to identify the total phytochem. ingredients present in different crude extracts of tuberosa. Phytochem. anal. has been carried out for differential cold solvent extracts of various parts of tuberosa such as petals, stamens, and ovary by gas chromatog. coupled with mass spectrometry, ultra-performance liquid chromatog. to quadrupole time-of-flight mass spectrometry, and evaporative light scattering detector analyzers for the identification of bioactive components. Among the various solvents used for the extraction, di-Et ether is found to be the most suitable and efficient solvent, as its total differential recovery from the crude extract is about 0.24% as compared to 0.04% obtained by using n-hexane or petroleum ether. Numerous phytochems. have been identified by the chromatog. and MS techniques, which demonstrate the presence of essential fatty acids along with other pharmacol. importance phytoconstituents. Identification of addnl. phytochems. present in the crude extract of tuberosa flower further enhances its biol. and pharmacol. significance. The present work lays a foundation for further research and development of phytoconstituents of the tuberosa flower.

Journal of Separation Science published new progress about Flower. 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

Barhoumi, Lina M. published the artcileAroma profiles analysis of two populations of Salvia palaestina Benth. Collected from mediterranean and irano-turanian zones in Jordan, COA of Formula: C9H18O2, the main research area is Salvia palaestina Benth mediterranean irano turanian zone Jordan; Salvia palaestina Benth.; SPME-GC/MS; biodiversity; emission profiles; multivariate analysis; volatile organic compounds.

The volatile principles emitted from different aerial organs of two S. palaestina Benth. populations (Mediterranean (Med) and Irano-Turanian (IrT)) growing wild in Jordan were extracted by Solid Phase Micro-Extraction (SPME) and analyzed by GC/MS technique. Sesquiterpene hydrocarbons dominated stems (59.38%, 49.67%) and leaves (93.28%, 32.39%) emissions from Med and IrT zones, resp. while monoterpene hydrocarbons had the major contribution to the aroma of pre-flowering buds (78.62%, 74.96%), opened flowers (76.12%, 59.99%) and petals (69.57%, 54.28%) and were mostly represented by sabinene (in Med zone) and ociemene isomers (Z & E) in IrT zone. Multivariate anal. classified the two populations into two different clusters based on their origin and indicated the occurrence of two ecotypes of this species. Different organs from the same collection site showed emission profiles of similar chem. composition

Journal of Oleo Science published new progress about Flower. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, COA of Formula: C9H18O2.

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