Month: November 2022

Manipulation of sensory characteristics and volatile compounds in strawberry fruit through the use of isolated wavelengths of light was written by Campbell, Sean M.;Sims, Charles A.;Bartoshuk, Linda M.;Colquhoun, Thomas A.;Schwieterman, Michael L.;Folta, Kevin M.. And the article was included in Journal of Food Science in 2020.COA of Formula: C10H20O2 The following contents are mentioned in the article:

Consumers consistently note that there is room for improvement in the flavor of com. strawberries. Fruit flavor and aroma are affected by both genetics and environment. This work tests the hypothesis that sensory quality may be manipulated using postharvest light treatments. Individual detached fruits representing two different cultivars received a 24-h treatment of 100渭mol m^-2 s^-1 blue LED light while the control was kept in complete darkness. Following treatment, samples were analyzed for flavor volatiles, sugars, acids, firmness, and sensory differences in human trials. Fruits were rated for overall liking, texture, sweetness, sourness, and overall strawberry flavor intensity (OSFI) on the sensory and hedonic versions of the global intensity scale (GIS). A pos. treatment effect was observed for “Strawberry Festival” fruit for the overall liking rating. A triangle test revealed a significant treatment effect, as light-treated fruit tested higher in many flavor volatiles including those known to contribute to sweetness in strawberries. Levels of several volatiles were consistently higher in the treated fruit across all four harvests: acetic acid hexyl ester, butanoic acid octyl ester, Me isovalerate, and pentanoic acid Et ester. The results show that postharvest light treatment can be used to modulate sensory quality of fruit, perhaps offering a means to complement genetic efforts in fruit flavor and aroma improvement. Practical Application : The results indicate that it may be possible to increase the sensory quality of strawberry fruits using an inexpensive and noninvasive light treatment. Light may be applied during transport or storage to improve fruit quality. This concept could also be extended into other realms of storage, such as residential and com. refrigeration, further increasing the quality impact of the approach. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1COA of Formula: C10H20O2).

Octyl acetate (cas: 112-14-1) 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. 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.COA of Formula: C10H20O2

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

The Influence of Malt Variety and Origin on Wort Flavor was written by Stewart, Susan;Sanders, Ross;Ivanova, Natalja;Wilkinson, Kerry L.;Stewart, Doug C.;Dong, Jianjun;Hu, Shumin;Evans, David Evan;Able, Jason A.. And the article was included in Journal of the American Society of Brewing Chemists.Electric Literature of C10H20O2 The following contents are mentioned in the article:

Beer flavor is primarily impacted by malt kilning and the choice of yeast/hops in the beer recipe. Although barley malt is the material backbone of most beers, variety has until recently been largely overlooked with respect to flavor differences. In this study, 11 malt variety samples from multiple Australian and international (UK, Canada, China) growing regions were infusion mashed (65 掳C) at laboratory scale to produce unboiled wort to investigate differences between the flavor profiles observed with sensory assessment and headspace-SPME gas chromatog.-mass spectrometry (HS-SPME GC-MS). Sensory evaluation identified wort flavor differences with the control heritage samples, Maris Otter/Schooner, having the highest overall flavor complexity and acceptability. The Chinese malted Chinese/Canadian samples had the lowest overall flavor complexity rankings. Overall, flavor complexity was correlated with KI, malt protein (neg.), and 尾-glucosidase (neg.), while sweetness intensity was correlated with limit dextrinase and pH. HS-SPME GC-MS anal. focused only on compounds that were significantly different between varieties (ANOVA, P 鈮?0.05). Overall, 107 compounds were identified with significantly different levels between the varietal worts. The resultant PCA plots (overall, aldehydes, alcs., esters, organic acids, terpenes, ketones) supported the sensory assessment, with Maris Otter and the Australian samples clustering in different PCA sectors compared to the Chinese malted Canadian/Chinese samples. These findings provide a basis for key compound identifications that influence malt flavor through the brewing process. The results have the potential to assist barley breeders in selecting optimized germplasm for future variety development and can assist maltsters and brewers to consistently target desired flavors for finished beers and potentially whisk(e)y. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Electric Literature of C10H20O2).

Octyl acetate (cas: 112-14-1) 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 纬-valerolactone.Electric Literature of C10H20O2

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

Control of polymer colloidal crystal structure and orientation on patterned substrates by electrophoresis was written by Dziomkina, Nina V.;Hempenius, Mark A.;Vancso, G. Julius. And the article was included in Proceedings of SPIE-The International Society for Optical Engineering in 2005.Synthetic Route of C7H14O3 The following contents are mentioned in the article:

The method of electrophoretic deposition of charged polymer (polystyrene) microspheres on topol. patterned substrates is discussed. Surface patterning with different symmetries and structure periodicity in the sub-micrometer range over large surface areas was realized by laser interference lithog. Growth of colloidal crystals on patterned and bare electrode surfaces was compared. Surface patterning predetermined the colloidal crystal structure and orientation. Fcc colloidal crystals with (111), (100) and (110) crystal plane orientations parallel to the electrode surfaces were successfully grown on patterned electrodes with the corresponding pattern symmetry. The growth of colloidal crystals with (111) and (100) crystal plane orientations parallel to the electrode surface was easily controlled by patterned surfaces, while only two layers of colloidal crystals having the (110) plane orientation parallel to the electrode surface were grown in a controlled way. The growth of thick colloidal crystals in the non-close-packed [110] direction generated a mixture of small domains of different orientations, where domains with (111) and (100) orientations dominated. The thickness of the colloidal crystals was controlled by varying the deposition parameters. Thickness increased with increasing the applied voltage, deposition time, concentration of colloidal particles and with decreasing the withdrawal speed of the electrodes from the colloidal suspension. A threshold voltage of 3.36 V was determined, beyond which a significant increase in the thickness of the colloidal crystals with applied voltage was observed A gradient in the thickness of the colloidal crystals was obtained across the electrode surface at low withdrawal speed (0.04 mm/s). Colloidal crystals with a homogeneous thickness over the electrode area were formed at withdrawal speeds of 0.07 – 0.1 mm/s. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Synthetic Route of C7H14O3).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) 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. Esters contain a carbonyl center, which gives rise to 120掳 C鈥揅鈥揙 and O鈥揅鈥揙 angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C鈥揙鈥揅 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. Synthetic Route of C7H14O3

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

Effect of Sodium Selenite on the Metabolite Profile of Epichloe sp. Mycelia from Festuca sinensis in Solid Culture was written by Zhou, Lianyu;Jiao, Lu;Ju, Jiasheng;Ma, Xuelan. And the article was included in Biological Trace Element Research in 2022.Electric Literature of C21H44O5 The following contents are mentioned in the article:

Selenium (Se) is an essential micronutrient with many beneficial effects for humans and other living organisms. Numerous microorganisms in culture systems enrich and convert inorganic selenium to organic selenium. In this study, Epichloe sp. from Festuca sinensis was exposed to increasing Na2SeO3 concentrations (0, 0.1, 0.2, 0.3, and 0.4 mmol/L) in Petri dishes with potato dextrose agar (PDA) for 8 wk. Epichloe sp. mycelia were immediately collected after mycelial diameters were measured at 4, 5, 6, 7, and 8 wk of cultivation, resp. Gas chromatog.-mass spectrometer (GC-MS) anal. was performed on different groups of Epichloe sp. mycelia. Different changes were observed as Epichloe sp. was exposed to different selenite conditions and cultivation time. The colony diameter of Epichloe sp. decreased in response to increased selenite concentrations, whereas the inhibitory effects diminished over time. Seventy-two of the 203 identified metabolites did not differ significantly across selenite treatments within the same time point, while 82 compounds did not differ significantly between multiple time points of the same Se concentration However, the relative levels of 122 metabolites increased the most under selenite conditions. Specifically, between the 4th and 8th weeks, there were increases in 2-keto-isovaleric acid, uridine, and maltose in selenite treatments compared to controls. Selenium increased glutathione levels and exhibited antioxidant properties in weeks 4, 5, and 7. Addnl., we observed that different doses of selenite could promote the production of carbohydrates such as isomaltose, cellobiose, and sucrose; fatty acids such as palmitoleic acid, palmitic acid, and stearic acid; and amino acids such as lysine and tyrosine in Epichloe sp. mycelia. Therefore, Epichloe sp. exposed to selenite stress may benefit from increased levels of some metabolite compounds This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Electric Literature of C21H44O5).

Glyceryl monostearate (cas: 31566-31-1) 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. 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 C21H44O5

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

Chemical profiling of the human skin surface for malaria vector control via a non-invasive sorptive sampler with GCxGC-TOFMS was written by Wooding, Madelien;Rohwer, Egmont R.;Naude, Yvette. And the article was included in Analytical and Bioanalytical Chemistry in 2020.Related Products of 112-14-1 The following contents are mentioned in the article:

Volatile organic compounds (VOCs) and semi-VOCs detected on the human skin surface are of great interest to researchers in the fields of metabolomics, diagnostics, and skin microbiota and in the study of anthropophilic vector mosquitoes. Mosquitoes use chem. cues to find their host, and humans can be ranked for attractiveness to mosquitoes based on their skin chem. profile. Addnl., mosquitoes show a preference to bite certain regions on the human host. The chem. differences in the skin surface profiles of 20 human volunteers were compared based on inter-human attractiveness to mosquitoes, as well as inter- and intra-human mosquito biting site preference. A passive, non-invasive approach was followed to sample the wrist and ankle skin surface region. An inhouse developed polydimethylsiloxane (PDMS) passive sampler was used to concentrate skin VOCs and semi-VOCs prior to thermal desorption directly in the GC inlet with comprehensive gas chromatog. coupled to time-of-flight mass spectrometry (GCxGC-TOFMS). Compounds from a broad range of chem. classes were detected and identified as contributing to the differences in the surface skin chem. profiles. 5-Ethyl-1,2,3,4-tetrahydronaphthalene, 1,1鈥?oxybisoctane, 2-(dodecyloxy)ethanol, 伪,伪-dimethylbenzene methanol, Me salicylate, 2,6,10,14-tetramethylhexadecane, 1,2-benzenedicarboxylic acid, bis(2-methylpropyl) ester, 4-methylbenzaldehyde, 2,6-diisopropylnaphthalene, n-hexadecanoic acid, and 纬-oxobenzenebutanoic acid Et ester were closely associated with individuals who perceived themselves as attractive for mosquitoes. Addnl., biol. lead compounds as potential attractants or repellents in vector control strategies were tentatively identified. Results augment current knowledge on human skin chem. profiles and show the potential of using a non-invasive sampling approach to study anthropophilic mosquito-host interactions. 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 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 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.Related Products of 112-14-1

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

High efficacy of (Z)-纬-bisabolene from the essential oil of Galinsoga parviflora (Asteraceae) as larvicide and oviposition deterrent against six mosquito vectors was written by Govindarajan, Marimuthu;Vaseeharan, Baskaralingam;Alharbi, Naiyf S.;Kadaikunnan, Shine;Khaled, Jamal M.;Al-Anbr, Mohammed N.;Alyahya, Sami A.;Maggi, Filippo;Benelli, Giovanni. And the article was included in Environmental Science and Pollution Research in 2018.Reference of 106-73-0 The following contents are mentioned in the article:

The eco-friendly management of mosquitoes with novel and effective larvicides and oviposition deterrents is a crucial challenge to prevent outbreaks of mosquito-borne diseases. However, most of the herbal formulations tested in these years showed LC₅₀ values higher of 40 ppm, and significant oviposition deterrent activity only when tested at relatively higher doses (> 50 渭g/mL). Herein, we studied the chem. composition of the Galinsoga parviflora essential oil (EO). This plant is an annual herb native to South America naturalized all over the world. We tested the EO larvicidal and oviposition deterrent action on 6 mosquito species. Totally 37 compounds were identified in the EO of G. parviflora by GC and GC-MS analyses. The major constituent was (Z)-纬-bisabolene (38.9%). The G. parviflora EO and (Z)-纬-bisabolene showed acute toxicity on An. stephensi (LC₅₀ = 31.04 and 2.04 渭g/mL, resp.), Ae. aegypti (LC₅₀ = 34.22 and 2.26 渭g/mL, resp.), Cx. quinquefasciatus (LC₅₀ = 37.10 and 2.47 渭g/mL, resp.), An. subpictus (LC₅₀ = 40.97 and 4.09 渭g/mL, resp.), Ae. albopictus (LC₅₀ = 45.55 and 4.50 渭g/mL, resp.) and Cx. tritaeniorhynchus (LC₅₀ = 49.56 and 4.87 渭g/mL, resp.) larvae. Furthermore, the oviposition deterrent potential of the G. parviflora EO and (Z)-纬-bisabolene was studied on six mosquito vectors, showing that 25 渭g/mL of (Z)-纬-bisabolene led to an Oviposition Activity Index lower of – 0.79 in all tested mosquito vectors. Overall, all larvicidal LC₅₀ values estimated for (Z)-纬-bisabolene were lower than 5 渭g/mL. This result far encompasses current evidences of toxicity reported for the large majority of botanical products currently tested against mosquito young instars, allowing us to propose this compound as an highly effective mosquito larvicide and oviposition deterrent. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Reference of 106-73-0).

Methyl heptanoate (cas: 106-73-0) 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.Reference of 106-73-0

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

Deodorizing effects of rosemary extract on silver carp (Hypophthalmichthys molitrix) and determination of its deodorizing components was written by Huang, Pimiao;Wang, Zhirong;Shi, Yue;Zhang, Rui;Feng, Xiya;Kan, Jianquan. And the article was included in Journal of Food Science in 2022.Formula: C15H22O2 The following contents are mentioned in the article:

Fishy odor in fish products severely influences both eating quality and com. acceptability, and natural plant extracts, particularly spices, have recently become popular for the removal of fishy odor. This study aimed to explore the potential of rosemary extract for the deodorization of silver carp (Hypophthalmichthys molitrix), as well as to identify the deodorizing components in rosemary extract Results showed that all of the spice extracts used in this study (ginger, garlic, angelica dahurica, fennel, rosemary, nutmeg, white cardamom, cinnamon, star anise, and bay leaf) significantly reduced the fishy odor value of silver carp, among which rosemary extract was most effective, decreasing the fishy odor value by about 58%. Gas chromatog.-mass spectrometry anal. and sensory evaluation showed that the fishy odor value and concentrations of the fishy odor-active compounds were significantly reduced by the application of rosemary extract However, the lower the total phenolic content of rosemary extract, the poorer the deodorizing effects against silver carp, suggesting that the deodorizing effect was primarily driven by polyphenols. Fourteen phenolic compounds were measured in rosemary extract, and three individual phenolic compounds (rosmarinic acid [RA], carnosic acid [CA], and carnosol [CS]) were chosen for deodorizing experiment Sensory detection results and changes of contents of volatile showed that these three phenolic compounds are effective at removing the fishy odor. These results suggest that polyphenols are the main deodorizing components, and RA, CA, and CS are the main deodorizing active compounds in rosemary extract Practical Application : The results of this study may provide a new way to determine the deodorizing components of spice extracts Moreover, it can provide guidance for further research in investigating the deodorizing mechanism of sipce extracts This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Formula: C15H22O2).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is 纬-valerolactone.Formula: C15H22O2

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

Oxidative breakdown of tetrachloro-o-benzoquinone with peroxyphthalic acid. Study of the oxidation products was written by Karrer, P.;Testa, E.. And the article was included in Helvetica Chimica Acta in 1949.Quality Control of Ethyl methyl adipate The following contents are mentioned in the article:

Tetrachloro-o-benzoquinone and o-HO₂CC₆H₄CO₃H give 30.5% tetrachloromuconic acid (I), m. 156.7掳 (di-Me ester, b₁₁ 135掳), and 3.5% 伪,尾,未-trichloro-纬-hydroxymuconic acid 纬-lactone (II), m. 182掳, gives a violet solution with NaHCO₃ (Me ester (III), from CH₂N₂, m. 107掳). The yield of II increases in prolonged reactions. Hydrolysis of both I and II gives a mixture of 伪,纬-dihydroxy-尾,未-dichloromuconic acid 纬-lactone (IV), m. 225掳 (decomposition), and 2,3,5-trichloro-4-oxo-2-pentenoic acid (V), m. 107掳 (Me ester, m. 86-7掳). The intermediate in the formation of V is probably 伪,尾,未-trichloro-纬-hydroxymuconic acid, whose keto form loses CO₂. Catalytic reduction of V gives EtCO₂H and BuCO₂H. V and Ca(OCl)₂ form (:CClCO₂H)₂ and CHCl₃. IV does not react with HIO₄ or AgNO₃. With CH₂N₂ it gives Me 伪-methoxy-尾,未-dichloro-纬-hydroxymuconate lactone (VI), m. 99.5-100掳. III in hot H₂O gives Me 伪,纬-dihydroxy-尾,未-dichloromuconate 纬-lactone (VII), m. 166.5-7掳. With CH₂N₂ VII gives VI. Refluxing VI with H₂O gives a compound, m. 167-8掳, which is a Me 伪-methoxydihydroxychloromuconate 纬-lactone, but the location of the free OH and the Cl groups is not determined The mother liquors contain some Me 伪-methoxy-尾,未-dichloro-纬-hydroxymuconate (VIII), m. 100-1掳, but VIII is better obtained from VI with NaOH in MeOH. Catalytic reduction of VIII with Pt in EtOH gives Et Me adipate, b₁₁ 115-20掳, and in H₂O it gives adipic acid. Reduction with Zn and EtOH-AcOH gives an oil which is probably Me 伪-methoxy-纬-hydroxy-伪,未-dihydromuconate. With CH₂N₂ this gives a compound, b₁₁ 125-30掳, probably the di-Me ester. This study involved multiple reactions and reactants, such as Ethyl methyl adipate (cas: 18891-13-9Quality Control of Ethyl methyl adipate).

Ethyl methyl adipate (cas: 18891-13-9) 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. 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.Quality Control of Ethyl methyl adipate

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

A predictive solubility tool for pesticide emulsifiable concentrate formulations was written by Kozuki, Y.;Ohtsubo, T.. And the article was included in Journal of ASTM International in 2009.Name: Ethyl 3-ethoxypropanoate The following contents are mentioned in the article:

Emulsifiable concentrates (ECs) are one of the most widely used pesticide formulations because they have a lot of advantages, such as good storage stability, relatively high biol. activity, easy weighing, easy production, and so on. An EC is normally prepared by dissolving a pesticide in a nonpolar solvent with surfactants. When a pesticide is hardly soluble in a common nonpolar solvent, a polar solvent is used as a cosolvent. One of the preferred polar solvents, which have been used for this purpose, is N-methyl-2-pyrrolidone (NMP). However, because of its toxic profile, which has recently become apparent, the com. use of NMP is recently restricted in many fields. Under the circumstances, it is desirable to look for an alternative solvent in the pesticide formulation area. The organic conceptual diagram was tried to search for the alternative solvents because it is a useful tool for predicting the physicochem. properties of an organic compound In the organic conceptual diagram, the physicochem. properties are expressed by the combination of the organic value (OV) and the inorganic value (IV). According to the theory, organic compounds that have similar IV/OV ratios (the inorganic organic balance = IOB) are mutually miscible in each other. In order to investigate the applicability of this concept to search for a suitable solvent for a pesticide that is hardly soluble in nonpolar solvents, the relation of the IOB between 2 hardly soluble pesticides (i.e., a neonicotinoid insecticide and an herbicide) and several types of solvents was evaluated. As expected, solvents having an IOB close to the targeted pesticide showed high solvency against it while the pesticide did not dissolve in solvents, which have an IOB farther off. The organic conceptual diagram can be a good tool for the selection of a solvent for a pesticide that is hardly soluble in the usual nonpolar solvents. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Name: Ethyl 3-ethoxypropanoate).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) 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. 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.Name: Ethyl 3-ethoxypropanoate

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

Rheological behaviour of thermotropic and lyotropic liquid crystalline phases of Guerbet branched chain glycolipids was written by Mislan, Azwa Amanina;Foong, J. L. Nigel;Saharin, Siti Munirah;Zahid, N. Idayu. And the article was included in Fluid Phase Equilibria in 2019.Computed Properties of C16H22O11 The following contents are mentioned in the article:

Glycolipids, being low toxicity, biodegradable and showing surface activity, are a candidate for an alternative surfactant known as biosurfactant. In this study, two Guerbet branched chain glycolipids namely 2-hexyl-decyl-尾-D-glucoside (尾-Glc-C₁₀C₆) and 2-hexyl-decyl-尾-D-maltoside (尾-Mal-C₁₀C₆) were prepared and their mesomorphic behaviors in dry and hydrated conditions were characterized and compared using rheol. These glycolipids possessed the same number of carbons in their alkyl chain but differed in headgroup size. 尾-Glc-C₁₀C₆ exhibited inverse hexagonal phase (H₂) in thermotropic but formed inverse bicontinuous cubic phase (V₂) of space group Ia3d and Pn3m upon contact with water at different concentration ranges. The self-assembly of 尾-Mal-C₁₀C₆ was dominated by the lamellar phase (L_伪) in both conditions. A shear viscosity test indicated that all mesophases formed by these Guerbet glycolipids exhibited shear thinning behavior. Oscillation measurements were obtained within the linear viscoelastic regime. In general, the viscoelastic studies on the thermotropic H₂ (尾-Glc-C₁₀C₆) and L_伪 (尾-Mal-C₁₀C₆) phases showed that the storage modulus (G鈥? and loss modulus (G鈥测€? increased with the frequency, indicating the typical viscoelastic response for non-Newtonian fluid at the selected temperatures The lyotropic inverse bicontinuous cubic of 尾-Glc-C₁₀C₆ containing different water concentrations showed the dominance of G鈥?over G” at the range of frequencies and temperatures tested. A similar finding was observed for the lyotropic L_伪 phase of 尾-Mal-C₁₀C₆ but with a lower magnitude of structural strength. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Computed Properties of C16H22O11).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is 纬-valerolactone.Computed Properties of C16H22O11

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