Tag: 100-200

Aroma composition of fruit wines. II. Bilberry wine was written by Schreier, P.;Drawert, F.. And the article was included in Chemie, Mikrobiologie, Technologie der Lebensmittel in 1982.COA of Formula: C11H14O3 This article mentions the following:

The volatile components of 2 laboratory-made and 4 com. bilberry wines were separated by liquid-liquid extraction and investigated by column chromatog. on silica gel, gas chromatog. and combined gas chromatog.-mass spectrometry. Of the aroma components, 43 compounds were identified, including, among them furfural  [98-01-1], 5-methylfurfural  [620-02-0], and Et 4-oxopentanoate  [539-88-8], in some com. samples made from juice concentrates The occurrence of 3-methylbutanoate  [503-74-2] and Et 2- [7452-79-1] and 3-methylbutanoates [108-64-5] in a com. sample, together with a large amount of benzyl alc.  [100-51-6] suggests unlawful addition of flavorings during processing. In the experiment, the researchers used many compounds, for example, Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0COA of Formula: C11H14O3).

Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.COA of Formula: C11H14O3

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

Sulfonyl-phenyl-ureido benzamidines a novel structural class of potent antimalarial agents was written by Leban, Johann;Pegoraro, Stefano;Dormeyer, Matthias;Lanzer, Michael;Aschenbrenner, Andrea;Kramer, Bernd. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2004.Application of 16413-26-6 This article mentions the following:

The high throughput in silico screening of a virtual library into the structure of the P. falciparum lactate dehydrogenase (LDH) with the 4SCan technol. yielded a series of biphenyl urea compounds These were chem. optimized to a new structural class of potent antimalarial agents. The compounds did not inhibit plasmodium LDH enough to fully explain their potency. Therefore we conclude that an unknown mode of action may be the cause of the antimalarial activity. In the experiment, the researchers used many compounds, for example, 3-Cyanophenylisocyanate (cas: 16413-26-6Application of 16413-26-6).

3-Cyanophenylisocyanate (cas: 16413-26-6) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Application of 16413-26-6

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

Exploring Plant Performance, Fruit Physicochemical Characteristics, Volatile Profiles, and Sensory Properties of Day-Neutral and Short-Day Strawberry Cultivars Grown in Texas was written by Scott, Gabrielle;Williams, Cierra;Wallace, Russell W.;Du, Xiaofen. And the article was included in Journal of Agricultural and Food Chemistry in 2021.Application of 706-14-9 This article mentions the following:

To assist increasing annual acreage of Texas-grown (U.S.A.) strawberries, it is essential to select cultivars with excellent plant and fruit quality characteristics suitable to the diverse environments. This study assessed multiple traits of 10 strawberry cultivars grown under high tunnels. A significant difference (p â‰?0.05) was observed for all traits, which possessed a wide variability of metabolites. Plant anal. (number of live plants, plant vigor, and harvest yield) indicated that the yield ranged from 226 to 431 g/plant, pos. correlated to plant vigor. Fruit physicochem. characteristic anal., including red color (absorbance at 500 nm) and taste-associated indicators [°Brix, titratable acidity (TA), and total soluble solids (TSS)/TA], showed that °Brix and TSS/TA ranged from 8.0 to 12.9 and from 9.1 to 15.3, resp. More than 300 volatiles were identified using solid-phase microextraction-gas chromatog.-mass spectrometry, and total volatiles varied 1.5 times with high variance of individual compounds between cultivars. Descriptive sensory anal. indicated that strawberry flavor was pos. associated with sensory attributes of sweetness, jammy, fruity, buttery, fresh, and creamy while neg. related to bitterness, astringency, and sourness. Partial least squares regression indicated that strawberry flavor was highly correlated with sweet taste and volatile composition No specific relationship between these traits and day-neutral or June-bearing varieties was identified. Ideal cultivars for Texas growing conditions with superior and balanced flavor qualities were Albion, Sweet Charlie, Camarosa, Camino Real, and Chandler. In the experiment, the researchers used many compounds, for example, 5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9Application of 706-14-9).

5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Application of 706-14-9

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

Chemoenzymatic synthesis of (S)-duloxetine using carbonyl reductase from Rhodosporidium toruloides was written by Chen, Xiang;Liu, Zhi-Qiang;Lin, Chao-Ping;Zheng, Yu-Guo. And the article was included in Bioorganic Chemistry in 2016.Safety of Ethyl 3-oxo-3-(thiophen-2-yl)propanoate This article mentions the following:

A chemoenzymic strategy was developed for (S)-duloxetine production employing carbonyl reductases from newly isolated Rhodosporidium toruloides into the enantio-determining step. Amongst the ten most permissive enzymes identified, cloned, and overexpressed in Escherichia coli, RtSCR9 exhibited excellent activity and enantioselectivity. Using co-expressed E. coli harboring both RtSCR9 and glucose dehydrogenase, (S)-3-(dimethylamino)-1-(2-thienyl)-1-propanol 3a was fabricated with so far the highest substrate loading (1000 mM) in a space-time yield per g of biomass (DCW) of 22.9 mmol L^-1 h^-1 g DCW^-1 at a 200-g scale. The subsequent synthetic steps from RtSCR9-catalyzed (S)-3a were further performed, affording (S)-duloxetine with 60.2% overall yield from 2-acethylthiophene in >98.5% ee. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(thiophen-2-yl)propanoate (cas: 13669-10-8Safety of Ethyl 3-oxo-3-(thiophen-2-yl)propanoate).

Ethyl 3-oxo-3-(thiophen-2-yl)propanoate (cas: 13669-10-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Safety of Ethyl 3-oxo-3-(thiophen-2-yl)propanoate

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

Synthesis of stable analogs in blood and conformational analysis of arenastatin A, a potent cytotoxic spongean depsipeptide was written by Murakami, N.;Tamura, S.;Wang, W.;Takagi, T.;Kobayashi, M.. And the article was included in Tetrahedron in 2001.Computed Properties of C11H14O3 This article mentions the following:

In order to produce analogs of arenastatin A, I (X = Y = O; a potent cytotoxic depsipeptide from the marine sponge Dysidea arenaria) that are stable in blood, the authors synthesized four compounds with modified 15-20 ester linkage. Amongst them, the carba analog I (X = CH₂, Y = O) and the 20-deoxo analog I (X = O, Y = H₂) showed stability in serum. The thio analog I (X = S, Y = O) showed potent cytotoxicity against KB cells (IC₅₀ = 0.9 ng/mL). The 15-dimethyl analog II was somewhat more stable than arenastatin A itself, but its potency was reduced against KB cells (IC₅₀ = 200ng/mL). The conformation of arenastatin A and its analogs were analyzed by distance-restrained mol. dynamic calculation to reveal a three-dimensional stereostructure contributing to the extremely potent cytotoxicity of arenastatin A. In the experiment, the researchers used many compounds, for example, Benzyl 2-hydroxy-2-methylpropanoate (cas: 19444-23-6Computed Properties of C11H14O3).

Benzyl 2-hydroxy-2-methylpropanoate (cas: 19444-23-6) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Computed Properties of C11H14O3

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

Effect of sea-buckthorn pulp and flaxseed residues on quality and shelf life of bread was written by Guo, Xin;Shi, Longkai;Yang, Shuai;Yang, Roujia;Dai, Xinyue;Zhang, Tao;Liu, Ruijie;Chang, Ming;Jin, Qingzhe;Wang, Xingguo. And the article was included in Food & Function in 2019.SDS of cas: 659-70-1 This article mentions the following:

The use of natural products as food supplements has received increasing attention in recent years. Sea-buckthorn pulp and flaxseed residues are rich in phenolic fractions and aroma substances, thereby offering high antioxidant and antimicrobial activity. However, large quantities of these residues usually remain unused. Therefore, this study confirmed the chem. composition and antioxidant and antimicrobial capacity of these materials, and evaluated their effect on the quality, characteristics and shelf life of bread. Both residues were rich in crude fiber, while sea-buckthorn had a much higher content of polyphenols compared with flaxseed. The addition of these two residues changed the characteristics and nutritional value of the bread, including the sp. volume, color, texture, and antioxidant capacity. Supplementation with these two residues also gave the breads new aromas. The shelf life of the breads was increased by different levels of addition compared with the control group. For sensory evaluation, bread with a suitable content of residues was favored by consumers. In the experiment, the researchers used many compounds, for example, Isopentyl 3-methylbutanoate (cas: 659-70-1SDS of cas: 659-70-1).

Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.SDS of cas: 659-70-1

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

Supercritical and ultrasound-assisted extracts from Pleurotus pulmonarius mushroom: chemical profiles, antioxidative, and enzyme-inhibitory properties was written by Milovanovic, Ivan;Zengin, Gokhan;Maksimovic, Svetolik;Tadic, Vanja. And the article was included in Journal of the Science of Food and Agriculture in 2021.Name: Isopentyl 3-methylbutanoate This article mentions the following:

This study provides an insight into the impact of ultrasound-assisted extraction with water as solvent (UAEW) and extraction by supercritical carbon dioxide (SC-CO₂) with 5% EtOH on antioxidant and enzyme inhibitory activity in regard to the chem. profile of the edible and medicinal mushroom, Pleurotus pulmonarius. Extraction efficiency was between 0.36% and 63.32%, depending on the extraction technique. The main compounds in the extracts were fatty acids. Supercritical CO₂ extraction with co-solvent was the most suitable method for obtaining extracts that were rich in ergosterol content, reaching a value of 40.1 mg g^-1. The UAEW of crude mushroom powder ensured the highest yield, as well as the extracts with best antioxidative activity. The measurements of enzyme inhibitory activity revealed that all types of investigated extracts exhibited only tyrosinase and amylase inhibition at a significant level. Based on our results, the extraction methods significantly affected the chem. profile and bioactivity of P. pulmonarius. In the experiment, the researchers used many compounds, for example, Isopentyl 3-methylbutanoate (cas: 659-70-1Name: Isopentyl 3-methylbutanoate).

Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Name: Isopentyl 3-methylbutanoate

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

Influence of fruit logistics on fresh-cut pineapple (Ananas comosus [L.] Merr.) volatiles assessed by HS-SPME-GC-MS analysis was written by Steingass, Christof B.;Dickreuter, Jennifer;Kuebler, Sabine;Schweiggert, Ralf M.;Carle, Reinhold. And the article was included in European Food Research and Technology in 2021.Synthetic Route of C10H18O2 This article mentions the following:

Green-ripe pineapples are shipped overseas by sea freight, while those picked at full maturity need to be transported by airfreight over the same large distance. In this study, fresh-cut pineapple cubes were assessed two, five, and eight days after processing from green-ripe pineapples after mimicked sea freigh (SF) and fully ripe air-freighted (AF) pineapples. The sea-freighted samples displayed elevated titratable acidity (TA), thus resulting in smaller ratios of total soluble solids and TA compared to the AF pineapples. Differences in the carotenoid levels of the two fresh-cut categories were found to be insignificant. By contrast, hierarchical cluster anal. (HCA) and principal component anal. (PCA) calculated on the basis of the volatiles analyzed by headspace solid-phase microextraction-gas chromatog.-mass spectrometry (HS-SPME-GC-MS) permitted to distinguish all six individual sample types and to segregate them into two major clusters (SF and AF). The effect of storage on the volatiles was further evaluated by partial least squares (PLS) regression. Substantial chem. markers to differentiate the individual samples and to describe the effect of storage were deduced from the PCA and PLS regression, resp. In general, fresh-cut products obtained from fully ripe AF fruit displayed higher concentrations of volatiles, in particular, increased concentrations of diverse Me esters. With progressing storage duration, the concentrations of ethanol and diverse Et esters increased. Moreover, products from AF pineapples displayed lower microbial counts compared to those from SF fruit. In the experiment, the researchers used many compounds, for example, 5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9Synthetic Route of C10H18O2).

5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Synthetic Route of C10H18O2

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

Synthesis and antibacterial activity of urea and thiourea derivatives at C-8 alkyl chain of anacardic acid mixture isolated from a natural product cashew nut shell liquid (CNSL) was written by Reddy, N. Subhakara;Rao, A. Srinivas;Chari, M. Adharvana;Kumar, V. Ravi;Jyothi, V.;Himabindu, V.. And the article was included in International Journal of Organic Chemistry in 2011.Formula: C8H4N2O This article mentions the following:

Synthesis and antibacterial activity of some novel urea and thiourea derivatives of anacardic acid prepared from com. available anacardic acid which is obtained from natural cashew nut shell liquid (CNSL). The newly prepared compounds were tested for activity against Gram pos. and Gram neg. bacteria. Most of the compounds were active compared with the standard drug ampicillin. In the experiment, the researchers used many compounds, for example, 3-Cyanophenylisocyanate (cas: 16413-26-6Formula: C8H4N2O).

3-Cyanophenylisocyanate (cas: 16413-26-6) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Formula: C8H4N2O

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

Enantioselective Synthesis of Polysubstituted Benzopyrano[3,4-c]pyrrolidine Frameworks via [3 + 2] Cycloaddition of Azomethine Ylides and Coumarin Derivatives was written by Chang, Geng-Hua;Wang, Chein-Yi;Madhusudhan Reddy, G.;Tsai, Yi-Ling;Lin, Wenwei. And the article was included in Journal of Organic Chemistry in 2016.Formula: C9H10O3S This article mentions the following:

An enantioselective synthesis of benzopyrano[3,4-c]pyrrolidine derivatives via organocatalyzed [3 + 2] cycloaddition has been achieved. Cinchona alkaloid-derived organocatalysts as Bronsted bases have been examined for this asym. cycloaddition of o-hydroxy aromatic aldimines with 3-substituted coumarins. An unexpected rearrangement of the quaternary acyl moiety in the products resulted in an in situ protection of the o-hydroxy group. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(thiophen-2-yl)propanoate (cas: 13669-10-8Formula: C9H10O3S).

Ethyl 3-oxo-3-(thiophen-2-yl)propanoate (cas: 13669-10-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Formula: C9H10O3S

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