Month: December 2022

Impact of crossflow microfiltration on aroma and sensory profiles of a potential functional citrus-based food was written by Hammad, Imane;Dornier, Manuel;Lebrun, Marc;Maraval, Isabelle;Poucheret, Patrick;Dhuique-Mayer, Claudie. And the article was included in Journal of the Science of Food and Agriculture in 2022.Related Products of 112-14-1 The following contents are mentioned in the article:

Citrus juices can be cold-concentrated by crossflow microfiltration (CMF) in order to obtain functional foods enriched in carotenoids, flavonoids and pectins. The work aimed to characterize the organoleptic quality of this type of micronutrient-dense foods through their aroma profile and sensory anal. Two citrus concentrates with and without a diafiltration step were compared. Both citrus products were very different, linked to aroma compound, sugar and organic acid contents. Due to its sugar/acidity balance and its better aromatic profile responsible for the citrus-floral flavor, the concentrate without diafiltration was preferred by the sensory panel. Thanks to a simple transfer model, we showed that retention of volatiles clearly varied from one aroma compound to another. The terpene hydrocarbons were the most retained by the membrane during CMF, probably because they were strongly associated with insoluble solids by adsorption. Even though the process modified their organoleptic profiles, both citrus-based products were well rated and can be consumed directly as pleasant functional drinks. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Related Products of 112-14-1).

Octyl acetate (cas: 112-14-1) 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. 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.Related Products of 112-14-1

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

Strong-base ASP compound system and Daqing oil emulsification was written by Jiang, Shanshan;Zhang, Yun;Lu, Xiangguo;Xu, Dianping;Sun, Gang;Li, Yaguang. And the article was included in Daqing Shiyou Dizhi Yu Kaifa in 2015.SDS of cas: 1731-94-8 The following contents are mentioned in the article:

The researches on the stability of the compound system and the strong base, wastage of the agents in the oil phase and effects of the alkali, surfactant and polymer on the lactescence stability are conducted through collecting and analyzing the crude oils from the target layers of Lamadian, Saertu, Xingshugang Oilfields and so on. The study results show that the crude oil from Lamadian Oilfield has the characteristics of rather higher viscosity, higher paraffin content and higher gel content, and moreover the more kinds and quantities of the acid active components. The lactescence stability is pretty, higher and the wastage of the alkali in the oil phase is larger; with the higher content of the heavy components and wider range of the carbon chains, the wastage of the heavy alkyl benzene sulfonate surfactant in the crude oil is larger and the stability of the lactescence is higher; the single-base liquid acts with the oil and generates W/O-type emulsion, while the binary composite system of “alkali/surfactant” and ternary compound system of “alkali/surfactant/polymer” produce O/W-type emulsion. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8SDS of cas: 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) 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. Polyesters are important plastics, with monomers linked by ester moieties. 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: 1731-94-8

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

Perceived aroma characteristic of Tsingtao beer in relation to wort gravity was written by Yu, Haiyan;Xie, Jingru;Xie, Tong;Guo, Wei;Chen, Chen;Tian, Huaixiang. And the article was included in European Food Research and Technology in 2021.Related Products of 112-14-1 The following contents are mentioned in the article:

To investigate the impacts of wort gravity on perceived aroma characteristic of Tsingtao beer, sensory-directed flavor approaches, including sensory quant. descriptive anal. (QDA), gas chromatog.-mass spectrometry (GC-MS), gas chromatog.-olfactometry (GC-O), and aroma recombination experiments were employed. The result of QDA revealed that the aroma intensities of Tsingtao beer varied with the wort gravity. GC-MS determined 50 volatile compounds in all from the four kinds of Tsingtao beer samples with different wort gravity. Concentrations of most compounds were pos. correlated with beer wort gravity. Then 39 aroma-active compounds in the four beer samples were identified by GC-O, and 33 of them were found exited in Y4 sample with the highest wort gravity. The aroma recombination experiments showed that aroma-active compounds with AI �1 (GC-O detected) could simulate the aroma profile, indicating these compounds were aroma perceived compounds There were 16, 17, 19 and 23 aroma perceived compounds in the four kinds of samples, resp., indicating Y4 had the most abundant aroma perceived compounds This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Related Products of 112-14-1).

Octyl acetate (cas: 112-14-1) 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. 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.Related Products of 112-14-1

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

Effects of phenacetin, paracetamol, and caffeine on the erosive activity of acetylsalicyclic acid in the rat stomach: dose-response relationships, time course of erosion development, and effects on acid secretion was written by Seegers, A. J. M.;Jager, L. P.;Van Noordwijk, J.. And the article was included in Journal of Pharmacy and Pharmacology in 1979.Quality Control of 4-Acetamidophenyl 2-acetoxybenzoate The following contents are mentioned in the article:

Adult male and female rats were equally susceptible to acetylsalicylic acid (I) [50-78-2]-induced gastric injury. Simultaneous administration of caffeine [58-08-2] or paracetamol (II) [103-90-2] resp. increased or decreased the degree of gastric lesion; phenacetin [62-44-2] administration had no effect. The effects of caffeine and II were dose-dependent and developed after 3-4 h. II or phenacetin pretreatment 1 h before I administration was ineffective. Benorylate [5003-48-5] administration caused no more erosions than equivalent mixtures of I and II. Histamine-stimulated gastric acid output was rapidly diminished during perfusion with I; II and caffeine had no initial effect on this but after 30 min the latter increased secretion to levels observed with caffeine alone. Thus, caffeine potentiates I-induced gastric erosions by stimulating acid secretion, but II inhibits them by preventing their development. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Quality Control of 4-Acetamidophenyl 2-acetoxybenzoate).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) 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. 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. Quality Control of 4-Acetamidophenyl 2-acetoxybenzoate

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

Thermal and oxidative stability of Atlantic salmon oil (Salmo salar L.) and complexation with β-cyclodextrin was written by Hadaruga, Daniel I.;Unlusayin, Mustafa;Gruia, Alexandra T.;Birau, Cristina;Rusu, Gerlinde;Hadaruga, Nicoleta G.. And the article was included in Beilstein Journal of Organic Chemistry in 2016.Electric Literature of C20H40O2 The following contents are mentioned in the article:

The thermal and oxidative stability of Atlantic salmon oil (Salmo salar L.) as well as its β-cyclodextrin (β-CD) complexation ability has been verified for the first time. The main omega-3 fatty acids, EPA and DHA, were significantly degraded, even at 50 °C. Their relative concentrations decrease from 6.1% for EPA and 4.1% for DHA to 1.7% and 1.5% after degradation at 150 °C, resp. On the other hand, the relative concentrations of monounsaturated and saturated fatty acids remained constant or slightly increased by a few percent after degradation (e.g., from 10.7% to 12.9% for palmitic acid). Co-crystallization of ASO with β-CD at a host-guest ratio of 1:1 and 3:1 from an ethanol-water mixture and kneading methods has been used for the preparation of β-CD/ASO complexes. The anal. of the complexes by thermogravimetry, differential scanning calorimetry (DSC), and Karl Fischer titration (KFT) as well as the decrease of the “strongly-retained” water content confirm the formation of the inclusion compound Furthermore, the DSC parameters correlate well with the KFT kinetic data for β-CD/ASO complexes. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Electric Literature of C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) 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. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Electric Literature of C20H40O2

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

Control of starch-lipid interactions on starch digestibility during hot-extrusion 3D printing for starchy foods was written by Liu, Zipeng;Chen, Ling;Zheng, Bo. And the article was included in Food & Function in 2022.Synthetic Route of C21H44O5 The following contents are mentioned in the article:

The nutritional design of personalized starchy foods has become a research hotspot in the field of food science. Driven by the immense functional and nutritional implications of starch-lipid binary interactions, this study is aimed at designing starch digestibility by controlling the interaction between starch and glycerol monostearate (GMS)/stearic acid (SA) using a hot-extrusion 3D printing (HE-3DP) environment. The results indicated that the thermal shear force in the HE-3DP environment promoted hydrophobic interactions between starch and lipids, forming a V-type starch-lipid complex with a compact and ordered structure, thus enhancing enzymic resistance. Compared with GMS, SA with linear hydrophobic chains was inclined to compound with starch to form a more ordered structure. Interestingly, the slowly digestible starch (SDS) and resistant starch (RS) content reached 25.06% when the added SA content was 10%. Besides, correlations between the structural parameters and digestibility were established, which provided crucial information for designing nutritional starchy food systems using HE-3DP. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Synthetic Route of C21H44O5).

Glyceryl monostearate (cas: 31566-31-1) 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. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Synthetic Route of C21H44O5

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

Characterization of chemical isolates of Caryopteris odorata was written by Shahzadi, Tayyaba;Abbasi, Muhammad Athar;Aziz-Ur-Rehman;Riaz, Tauheeda;Khan, Khalid Mohammed;Ahmad, Viqar Uddin;Ashraf, Muhammad;Hussain, Bushra;Ajaib, Muhammad. And the article was included in Journal of the Chemical Society of Pakistan in 2012.Category: esters-buliding-blocks The following contents are mentioned in the article:

The phytochem. investigation of the chloroform soluble fraction of Caryopteris odorata (Ham. ex Roxb.) led to the isolation of one new constituent namely; n-pentadecyl[3-(4-hydroxyphenyl)] propanoate (I). The compounds 2-ethyl-n-hexyl benzoate (2), 2-ethyl-n-hexyl trans-cinnamate (3) bis-dodecylbenzene-1,4-dicarboxylate (4) were reported synthetically but these have been isolated for the first time from a natural source. Similarly, the known constituent like trans-cinnamic acid (5) and cis-cinnamic acid (6), heneicosanoic acid (7), Me tricontanoate (8) and octacosanyl tricontanoate (9) were also obtained for the first time from this plant source. The structures of these compounds were determined by IR, HR-MS, ¹H-NMR, ¹³C-NMR spectroscopy and by comparison with the published data of the closely related compounds These isolates were screened for their antioxidant, anti-urease and anti-tyrosinase activities and results revealed that n-Pentadecyl [3-(4-hydroxyphenyl)] propanoate (1) exhibits good antioxidant potential with low to zero enzyme inhibition activities. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Category: esters-buliding-blocks).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Category: esters-buliding-blocks

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

Optimization for supercritical CO₂ extraction of tilapia fish head oil by response surface method was written by Zhang, Chunhua;Bao, Bin;Chen, Shanqiao;Shen, Jingjing;Pan, Jing;Tao, Ningping;Wu, Wenhui. And the article was included in Shanghai Haiyang Daxue Xuebao in 2015.Related Products of 1731-94-8 The following contents are mentioned in the article:

The aim is to optimize the extraction process of tilapia fish head oil which is extracted by supercritical CO₂(SC-CO₂) from tilapia fish head. The signal factors were chosen by single-factor experiments and the optimal extraction conditions of tilapia fish oil by SC-CO₂ were optimized by response surface method. Then, the quality and fatty acid composition of tilapia fish head oil were analyzed. The results showed that the optimum conditions were: extraction pressure 36 MPa, extraction temperature 41°C and extraction time 3.1 h, which were better than cooking method, alkali hydrolysis method and enzymic method. The extraction rate under the optimal extraction condition by SC-CO₂ was 79.5%, and the iodine value, POV and acid value were 5.36±0.15 mg/kg, 4.27±0.33 mmol/kg and 139.0±8.9 g/100 g resp. The contents of saturated fatty acid(SFA), mono-unsaturated fatty acid(MUFA) and poly-unsaturated fatty acid(PUFA) were 27.85%, 41.74% and 30.41% resp. The tilapia fish head oil was rich in fatty acid, which indicated excellent nutritional value and functionality. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Related Products of 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) 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. 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.Related Products of 1731-94-8

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

Use of Dithiasuccinoyl-Caged Amines Enables COS/H₂S Release Lacking Electrophilic Byproducts was written by Cerda, Matthew M.;Mancuso, Jenna L.;Mullen, Emma J.;Hendon, Christopher H.;Pluth, Michael D.. And the article was included in Chemistry – A European Journal in 2020.Computed Properties of C4H7NS The following contents are mentioned in the article:

The enzymic conversion of carbonyl sulfide (COS) to hydrogen sulfide (H₂S) by carbonic anhydrase has been used to develop self-immolating thiocarbamates as COS-based H₂S donors to further elucidate the impact of reactive sulfur species in biol. The high modularity of this approach has provided a library of COS-based H₂S donors that can be activated by specific stimuli. A common limitation, however, is that many such donors result in the formation of an electrophilic quinone methide byproduct during donor activation. As a mild alternative, we demonstrate here that dithiasuccinoyl groups can function as COS/H₂S donor motifs, and that these groups release two equivalent of COS/H₂S and uncage an amine payload under physiol. relevant conditions. Addnl., we demonstrate that COS/H₂S release from this donor motif can be altered by electronic modulation and alkyl substitution. These insights are further supported by DFT investigations, which reveal that aryl and alkyl thiocarbamates release COS with significantly different activation energies. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Computed Properties of C4H7NS).

Isopropylisothiocyanate (cas: 2253-73-8) 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. 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.Computed Properties of C4H7NS

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

Use of Dithiasuccinoyl-Caged Amines Enables COS/H₂S Release Lacking Electrophilic Byproducts was written by Cerda, Matthew M.;Mancuso, Jenna L.;Mullen, Emma J.;Hendon, Christopher H.;Pluth, Michael D.. And the article was included in Chemistry – A European Journal in 2020.Product Details of 2253-73-8 The following contents are mentioned in the article:

The enzymic conversion of carbonyl sulfide (COS) to hydrogen sulfide (H₂S) by carbonic anhydrase has been used to develop self-immolating thiocarbamates as COS-based H₂S donors to further elucidate the impact of reactive sulfur species in biol. The high modularity of this approach has provided a library of COS-based H₂S donors that can be activated by specific stimuli. A common limitation, however, is that many such donors result in the formation of an electrophilic quinone methide byproduct during donor activation. As a mild alternative, we demonstrate here that dithiasuccinoyl groups can function as COS/H₂S donor motifs, and that these groups release two equivalent of COS/H₂S and uncage an amine payload under physiol. relevant conditions. Addnl., we demonstrate that COS/H₂S release from this donor motif can be altered by electronic modulation and alkyl substitution. These insights are further supported by DFT investigations, which reveal that aryl and alkyl thiocarbamates release COS with significantly different activation energies. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Product Details of 2253-73-8).

Isopropylisothiocyanate (cas: 2253-73-8) 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.Product Details of 2253-73-8

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