Tag: 300-400

Effects of Glyceryl Monostearate on the Retrogradation of Pea Starch was written by Wang, Ling;Lan, Xuyue;Xu, Wen;Du, Qinling;Deng, Sha;Jia, Dongying. And the article was included in Starch/Staerke in 2022.Recommanded Product: Glyceryl monostearate The following contents are mentioned in the article:

Pea starch (PS) jelly is prone to retrograde, resulting in increased hardness and decreased taste. Based on this, the effects of glyceryl monostearate (GMS) on the retrogradation properties of pea starch are investigated. The rheol., texture, thermal, mol., and crystal properties of PS-GMS blends are studied, and the possible interaction between PS and GMS is also analyzed. The addition of GMS reduces the hardness of pea starch gel, increases its springiness, and improves its quality. As the concentration of GMS increases, the onset temperature, conclusion temperature, and gelatinization enthalpy of the blend gels decrease. Moreover, GMS also reduces their ordered structure and crystallinity. The changes in the storage modulus after the addition of NaCl and urea indicate that GMS interactes with amylose mainly through hydrogen bonding. It can be concluded that GMS inhibits the retrogradation of PS gel by interacting with amylose through hydrogen bonds. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Recommanded Product: Glyceryl monostearate).

Glyceryl monostearate (cas: 31566-31-1) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Recommanded Product: Glyceryl monostearate

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

Isolation and identification of Lactobacillus and yeast species and their effect on the quality of fermented rice cakes was written by He, Li;Chen, Yanhua;Zhang, Haitian;Wang, Hui;Chen, Shujuan;Liu, Shuliang;Liu, Aiping;Li, Qin;Ao, Xiaolin;Liu, Yaowen. And the article was included in Innovative Food Science & Emerging Technologies in 2022.SDS of cas: 1731-94-8 The following contents are mentioned in the article:

In this study, microbes were isolated from the rice slurry of a fermented rice cake to obtain lactic acid bacteria and yeast species. These species were identified using microbial physiol. and gene sequence analyses. As the growth of the lactic acid bacterial strain R-2b and the yeast J-3a strains were found to be the best, a composite starter comprising these microbes was used for the preparation of fermented rice cakes. Based on single factor and orthogonal experiments, when the proportion of Lactobacillus plantarum, Saccharomyces cerevisiae, and Candida humilis was 1:3:6, the optimal fermentation conditions were addition of sugar and starter amounts of 20% and 6%, resp., a fermentation temperature of 32°C, and fermentation time of 8 h. The fermented rice cake with this optimum ratio had the most abundant volatile components and qualified physicochem. and microbial indexes. Addnl., the overall quality was better than that of com. available products. 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 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.SDS of cas: 1731-94-8

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

Pharmacological studies of 1-(p-chlorophenyl)propanol and 2-(1-hydroxy-3-butenyl)phenol: two new non-narcotic analgesics designed by molecular connectivity was written by Garcia-March, F. J.;Garcia-Domenech, R.;Galvez, J.;Anton-Fos, G. M.;de Julian-Ortiz, J. V.;Giner-Pons, R.;Recio-Iglesias, M. C.. And the article was included in Journal of Pharmacy and Pharmacology in 1997.Application of 5003-48-5 The following contents are mentioned in the article:

Mol. topol. has been applied to the design of new analgesic drugs. Linear discriminant anal. and connectivity functions were used to design two potentially suitable drugs which were synthesized and tested for analgesic properties by the acetic acid-induced abdominal constriction test in mice and the tail-flick test in rats. In mice, the compound 1-(p-chlorophenyl)propanol showed higher analgesic activity, both i.p. and orally, then acetylsalicylic acid. 2-(1-Hydroxy-3-butenyl)phenol exhibited a lesser protective effect (70% of that shown by acetylsalicylic acid). In rats, acetylsalicylic acid gave the greatest protection against pain when administered i.p., while 1-(p-chlorophenyl)propanol was the most active orally. The 2-(1-hydroxy-3-butenyl)phenol, both i.p. and orally, showed the least protective effect. These results demonstrated the peripheral analgesic properties of the selected compounds, thus confirming the validity of the mol. design method. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Application of 5003-48-5).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) 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 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 5003-48-5

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

Simple and reliable prediction of toxicological activities of benzoic acid derivatives without using any experimental data or computer codes was written by Keshavarz, Mohammad Hossein;Pouretedal, Hamid Reza. And the article was included in Medicinal Chemistry Research in 2013.Recommanded Product: 4-Acetamidophenyl 2-acetoxybenzoate The following contents are mentioned in the article:

Most of the benzoic acid derivatives can exhibit toxicity through serious public health and environmental problems. A reliable correlation is introduced for desk calculation of benzoic acid derivatives in rats via oral 50 % LD (LD₅₀). It can be easily used for any benzoic acid compound containing the carbon, hydrogen, nitrogen, oxygen and halogen atoms, or their sodium salts. The novel correlation is based on nitrogens, oxygens, and halogens as well as two correcting functions for increasing and decreasing toxicity of benzoic derivatives, which arise from some specific structural moieties. The predicted results for the toxicity of 81 benzoic acid derivatives in rats via oral LD₅₀ are more reliable than reported values by training and test sets of quant. structure-toxicity relationship (QSTR). The forecasting ability of the new model has also been checked for further 134 benzoic acid derivatives containing complex mol. structures. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Recommanded Product: 4-Acetamidophenyl 2-acetoxybenzoate).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Recommanded Product: 4-Acetamidophenyl 2-acetoxybenzoate

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

4-Methyltetrahydropyran (4-MeTHP): Application as an Organic Reaction Solvent was written by Kobayashi, Shoji;Tamura, Tomoki;Yoshimoto, Saki;Kawakami, Takashi;Masuyama, Araki. And the article was included in Chemistry – An Asian Journal in 2019.Quality Control of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate The following contents are mentioned in the article:

For the first time, a comprehensive study on the performance of 4-methyltetrahydropyran (4-MeTHP) as an organic reaction solvent was reported. Its broad application to organic reactions includes radical, Grignard, Wittig, organometallic, halogen-metal exchange, reduction, oxidation, epoxidation, amidation, esterification, metathesis, and other miscellaneous organic reactions. This application suggests that 4-MeTHP can serve as a substitute for conventional ethers and harmful halogenated solvents. However, 4-MeTHP was found incompatible with strong Lewis acids, and the C-O bond was readily cleaved by treatment with BBr₃. Moreover, the radical-based degradation pathways of 4-MeTHP, THP and 2-MeTHF were elucidated on the basis of GC-MS analyses. The data reported herein is anticipated to be useful for a broad range of synthetic chemists, especially industrial process chemists, when selecting the reaction solvent with green chem. perspectives. 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: 604-69-3Quality Control of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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. Quality Control of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate

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

Correlation analysis of physicochemical indexes with lipid oxidation characteristics during manufacturing process of fermented cantonese sausages was written by Huang, Jinzhi;Yang, Rongling;Tang, Daobang;Liu, Xueming. And the article was included in Shipin Kexue (Beijing, China) in 2015.Formula: C20H40O2 The following contents are mentioned in the article:

The acid value (AV) and peroxide value (POV), triobarbituric acid (TBA) value, carbonyl value, total acidity, moisture content, free fatty acid and fat during the production process of fermented Cantonese sausages were determined and their correlations were analyzed. The results showed that the AV, POV, TBA and carbonyl value increased as the production process proceeded. The contents of saturated fatty acids and free fatty acids were enhanced during the whole roasting process while the content of unsaturated fatty acids declined from 8 h onwards, which may be due to the continuous oxidation and hydrolysis of fat during the manufacturing process. In addition, pos. correlations among acid value, peroxide value, TBA, carbonyl value, total acid, moisture and fat content were observed POV was significantly correlated with total acidity. Therefore, rancidity degree and the degree of fat oxidation showed consistent trends during the manufacturing process. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Formula: C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) 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. 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.Formula: C20H40O2

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

Chitosan film containing antifungal agent-loaded SLNs for the treatment of candidiasis using a Box-Behnken design was written by Kraisit, Pakorn;Yonemochi, Etsuo;Furuishi, Takayuki;Mahadlek, Jongjan;Limmatvapirat, Sontaya. And the article was included in Carbohydrate Polymers in 2022.COA of Formula: C21H44O5 The following contents are mentioned in the article:

The aim of this study was to combine fluconazole (FZ)-loaded solid lipid nanoparticles (FZ-SLNs) and chitosan films (C-films) for the potential administration of FZ across the buccal mucosa using a Box-Behnken design. The chitosan films containing FZ-SLNs (C-FS-films) and C-films were prepared using a film casting method. The ATR-FTIR anal. confirmed the presence of hydrogen bonds between the NH⁺₃ groups of chitosan and the OH or COO^– groups of glyceryl monostearate in the films. Addnl., FESEM anal. of the morphol. of C-FS-films revealed the presence of FZ-SLNs in the films. Permeation studies using porcine buccal mucosa demonstrated that FZ from the C-FS-films was more permeable than in C-films. The antifungal activity of the C-FS-films was evaluated against Candida albicans, and inhibition zones were observed Thus, C-FS-films represent an exciting drug carrier for the treatment of candidiasis via the buccal mucosa. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1COA of Formula: 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. Polyesters are important plastics, with monomers linked by ester moieties. 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: C21H44O5

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

Fast filtration with a vacuum manifold system as a rapid and robust metabolome sampling method for Saccharomyces cerevisiae was written by Yun, Eun Ju;Seo, Seung-Oh;Kwak, Suryang;Oh, Eun Joong;Lee, Sun-Hee;Jin, Yong-Su;Kim, Kyoung Heon. And the article was included in Process Biochemistry (Oxford, United Kingdom) in 2021.Product Details of 31566-31-1 The following contents are mentioned in the article:

For metabolome sample preparation, rapid quenching of cellular metabolism without severe loss of intracellular metabolites is important. Here, we comparatively evaluated the two sampling methods, cold methanol quenching and fast filtration, for one of the most important industrial microorganisms, yeast Saccharomyces cerevisiae. The latter, using a vacuum manifold system capable of processing up to twenty samples simultaneously, was developed here. The results showed that the cold methanol quenching method resulted in severe losses of intracellular metabolites but that sugars and sugar phosphates were highly preserved. In comparison, the fast filtration method better preserved most metabolites with less extracellular contamination. Our results suggested that the fast filtration method with a vacuum manifold system can be widely applied to yeast metabolome anal. due to its simplicity, robustness, and lack of significant intracellular metabolite loss. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Product Details of 31566-31-1).

Glyceryl monostearate (cas: 31566-31-1) 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. 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.Product Details of 31566-31-1

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

UV spectrophotometry in drug control. Part 29: Newer drugs with benzene chromophores in the molecule; part 4: Effects of substitution and solvents was written by Kracmar, Josef;Kracmarova, J.. And the article was included in Pharmazie in 1983.Electric Literature of C17H15NO5 The following contents are mentioned in the article:

UV spectra are given for DL-ibuprofen  [15687-27-1] and mexiletine-HCl  [5370-01-4], baclofen  [1134-47-0], lorcainide-HCl  [58934-46-6], clonidine-HCl  [4205-91-8], and ketoconazole  [65277-42-1], DL-terbutalin sulfate  [23031-32-5], and propafenone-HCl  [34183-22-7], xipamide  [14293-44-8], and benorilate  [5003-48-5] in various solvents. Data on maximum and min. wavelengths, absorptivity (1%, 1 cm), and optimum concentration range for determination of the drugs are tabulated. Solvent effects on hyperchromic, bathochromic, hypochromic, and hypsochromic shifts in the spectra of ibuprofen, baclofen, ketoconazole, and xipamide are discussed. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Electric Literature of C17H15NO5).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) 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. 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. Electric Literature of C17H15NO5

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

Comparison of methods of external and internal standard for GC determination of docosahexaenoic acid was written by Ivanova, Stefka Achkova;Tsvetkova, Dobrina Doncheva;Obreshkova, Danka Petrova. And the article was included in Bulletin of Pharmaceutical Research in 2018.SDS of cas: 1731-94-8 The following contents are mentioned in the article:

Present study includes the comparison of methods of external and internal standard for the estimation of parameters like linearity and precision in gas chromatog. anal. of docosahexaenoic acid (DHA) with flame ionization detector at temperature 140°C – 280°C and using hydrogen as gas carrier. Linear dependence of the ratio of area of methylated DHA/area of Me nonadecanoate (internal standard) to the DHA concentration was obtained. There was no observed difference between the correlation coefficients for two methods (R² = 0.9928). From the exptl. results, it is obvious that related standard deviation (RSD) for internal standard method is more than RSD for external standard method, which demonstrates that nonadecanoic acid is not a suitable internal standard The external standard method allows achievement of good linearity and precision and is appropriate for identification and determination of DHA and fatty acids in food supplements. 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 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.SDS of cas: 1731-94-8

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