Month: December 2022

Profiling of volatile and non-phenolic metabolites-Amino acids, organic acids, and sugars of green tea extracts obtained by different extraction techniques was written by Das, Protiva Rani;Kim, Youngmok;Hong, Seong-Jin;Eun, Jong-Bang. And the article was included in Food Chemistry in 2019.Product Details of 5444-75-7 The following contents are mentioned in the article:

Volatile compounds and non-phenolic metabolites (amino acids, organic acids, and sugars) of aqueous green tea extracts obtained by ultrasonic extraction (UE), agitation extraction (AE), hot water extraction (HWE), and conventional extraction (CE) were determined using SPME-GC-MS and HPLC, resp. Significantly higher (P < 0.05) yields of volatiles and non-phenolic metabolites were obtained via UE and AE than via HWE and CE. UE, AE, HWE, and CE released 212, 201, 103, and 65 volatiles, resp. Sum total of amino acid and organic acid in extracts was 54.57, 54.35, 27.11, and 12.67 (mg/100 g), and 5.96, 6.19, 3.81, and 1.68 (mg/100 g) for UE, AE, HWE, and CE, resp. Volatiles except nitrogen-containing compounds had higher pos. correlations with L-theanine, sucrose, malic acid, and catechins yields. Findings of the current study suggest that an efficient extraction technique may significantly increase volatile and non-phenolic metabolite yields in aqueous green tea extract This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Product Details of 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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.Product Details of 5444-75-7

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

Anatomical structure of venom gland and venom composition analysis of Sirex noctilio was written by Wang, Zhengtong;Yang, Huawei;Li, Biying;Ren, Lili;Shi, Juan. And the article was included in Dongbei Linye Daxue Xuebao in 2021.Application In Synthesis of Isopropylisothiocyanate The following contents are mentioned in the article:

With Sirex noctilio collected from infected areas in Heilongjiang and Inner Mongolia, the anatomical locations of the venom gland and venom reservoir were observed by dissecting the abdomen of female adult S. noctilio and their structural characteristics were observed under a microscope. The temperature was set at 50°C and the venom composition was analyzed at 5°C/min to 200°C with Thermo Scientific GC-MS. The venom gland and venom reservoir were located at the base of S. noctilio ovipositor. The venom reservoir was translucent crystalline tissue with the size of green beans, and its structural features is beneficial for S. noctilio to store as many venoms as possible. Venoms, among which fatty acids account for the major proportion, contain alkaloids, sugars and glycosides, fatty acids and proteins. The fatty acids include palmitic acid, palmitoleic acid, stearic acid and stearic acid, and the proteins in the venom component may be the active substances that cause damage to the host trees. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Application In Synthesis of Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Application In Synthesis of Isopropylisothiocyanate

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

Anatomical structure of venom gland and venom composition analysis of Sirex noctilio was written by Wang, Zhengtong;Yang, Huawei;Li, Biying;Ren, Lili;Shi, Juan. And the article was included in Dongbei Linye Daxue Xuebao in 2021.Computed Properties of C4H7NS The following contents are mentioned in the article:

With Sirex noctilio collected from infected areas in Heilongjiang and Inner Mongolia, the anatomical locations of the venom gland and venom reservoir were observed by dissecting the abdomen of female adult S. noctilio and their structural characteristics were observed under a microscope. The temperature was set at 50°C and the venom composition was analyzed at 5°C/min to 200°C with Thermo Scientific GC-MS. The venom gland and venom reservoir were located at the base of S. noctilio ovipositor. The venom reservoir was translucent crystalline tissue with the size of green beans, and its structural features is beneficial for S. noctilio to store as many venoms as possible. Venoms, among which fatty acids account for the major proportion, contain alkaloids, sugars and glycosides, fatty acids and proteins. The fatty acids include palmitic acid, palmitoleic acid, stearic acid and stearic acid, and the proteins in the venom component may be the active substances that cause damage to the host trees. 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 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. 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.Computed Properties of C4H7NS

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

One pot synthesis of thio-glycosides via aziridine opening reactions was written by Hribernik, Nives;Tamburrini, Alice;Falletta, Ermelinda;Bernardi, Anna. And the article was included in Organic & Biomolecular Chemistry in 2021.Computed Properties of C16H22O11 The following contents are mentioned in the article:

A one-pot aziridine opening reaction by glycosyl thiols generated in situ from the corresponding anomeric thio-acetates affords thio-glycosides with a pseudo-disaccharide structure and an N-linked tether. The scope of the one-pot aziridine opening reaction was explored on a series of mono- and disaccharides, creating a class of pseudo-glycosidic compounds with potential for further functionalization. Unexpected anomerization of glycosyl thiols was observed under the reaction conditions and the influence of temperature, base and solvent on the isomerization was investigated. Single isomers were obtained in good to acceptable yields for mannose, rhamnose and sialic acid derivatives The class of thio-glycomimetics synthesized can potentially be recognized by various lectins, while presenting hydrolytic and enzymic stability. The nitrogen functionality incorporated in the glycomimetics can be exploited for further functionalization, including tethering to linkers, scaffolds or peptide residues. 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 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.Computed Properties of C16H22O11

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

ω-Hydroxy isoprenoid bisphosphonates as linkable GGDPS inhibitors was written by Bhuiyan, Nazmul H.;Varney, Michelle L.;Bhattacharya, Deep S.;Payne, William M.;Mohs, Aaron M.;Holstein, Sarah A.;Wiemer, David F.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2019.Computed Properties of C12H18O3 The following contents are mentioned in the article:

The enzyme geranylgeranyl diphosphate synthase (GGDPS) is a potential therapeutic target for multiple myeloma. Malignant plasma cells produce and secrete large amounts of monoclonal protein, and inhibition of GGDPS results in disruption of protein geranylgeranylation which in turn impairs intracellular protein trafficking. Our previous work has demonstrated that some isoprenoid triazole bisphosphonates are potent and selective inhibitors of GGDPS. To explore the possibility of selective delivery of such compounds to plasma cells, new analogs with an ω-hydroxy group have been synthesized and examined for their enzymic and cellular activity. These studies demonstrate that incorporation of the ω-hydroxy group minimally impairs GGDPS inhibitory activity. Furthermore conjugation of one of the novel ω-hydroxy GGDPS inhibitors to hyaluronic acid resulted in enhanced cellular activity. These results will allow future studies to focus on the in vivo biodistribution of HA-conjugated GGDPS inhibitors. This study involved multiple reactions and reactants, such as (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5Computed Properties of C12H18O3).

(2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5) 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 C12H18O3

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

Mass spectrometry-based metabolomics to reveal chicken meat improvements by medium-chain monoglycerides supplementation: Taste, fresh meat quality, and composition was written by Liu, Tao;Mo, Qiufen;Wei, Ji’an;Zhao, Minjie;Tang, Jun;Feng, Fengqin. And the article was included in Food Chemistry in 2021.Recommanded Product: 26662-94-2 The following contents are mentioned in the article:

This study was conducted to reveal the differences of chicken fresh meat quality, composition and taste induced by medium-chain monoglycerides (MG) supplementation. Results demonstrated that both chicken broth and meat taste were improved by MG supplementation. The up-regulated L-carnosine, sarcosine, uridine and nicotinamide in the chicken broth of the MG group contributed to the umami and meaty taste. Dietary MG increased the total superoxide dismutase activity and amino acid content in the muscle of chicken breast and reduced the malondialdehyde content and drip loss. Moreover, meat metabolome revealed that creatine, betaine, L-anserine, IMP, hypoxanthine, inosine and phospholipid, as well as amino acid and purine metabolism pathway connected to the improvements of meat quality, composition and taste of broilers by MG addition In conclusion, these findings provide convincing evidence regarding the improvements of fresh meat quality, composition and taste of broilers by MG supplementation. This study involved multiple reactions and reactants, such as (2R,9Z)-1-(((2-Aminoethoxy)(hydroxy)phosphoryl)oxy)-3-(palmitoyloxy)propan-2-yl oleate (cas: 26662-94-2Recommanded Product: 26662-94-2).

(2R,9Z)-1-(((2-Aminoethoxy)(hydroxy)phosphoryl)oxy)-3-(palmitoyloxy)propan-2-yl oleate (cas: 26662-94-2) 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.Recommanded Product: 26662-94-2

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

Chemical composition, nutritional value and bioactive compounds in six uvaia accessions was written by da Silva, Aline Priscilla Gomes;Spricigo, Poliana Cristina;Purgatto, Eduardo;Alencar, Severino Matias de;Sartori, Sergio Fernando;Jacomino, Angelo Pedro. And the article was included in Food Chemistry in 2019.Name: Octyl acetate The following contents are mentioned in the article:

This study analyzed six uvaia (Eugenia pyriformis Cambess) accessions (‘Comum’, ‘Rugosa’, ‘Doce de Patos de Minas’, ‘Pera’, ‘Rugosa Doce’ and ‘Dura’) with respect to chem. composition, nutritional value, bioactive compounds and antioxidant capacity. The ‘Rugosa Doce’ and ‘Doce de Patos de Minas’ accessions were sweeter (20.18 g 100 g^-1 and 18.88 g 100 g^-1, resp.), while the ‘Rugosa’ and ‘Pera’ accessions were less acid (0.28 g 100 g^-1 and 0.33 g 100 g^-1, resp.). Terpenes were the major volatile compounds (46.75%) identified by SPME-GC/MS. The ‘Rugosa’ accession contained high levels of fibers (43.81 g 100 g^-1) and minerals (2235.10 mg 100 g^-1). The ‘Rugosa Doce’ and ‘Rugosa’ accessions were distinguished by total flavonoids and phenolic compounds ‘Rugosa Doce’ and ‘Rugosa’ may potentially serve as a raw material for food, while ‘Doce de Patos de Minas’ and ‘Pera’ can be used for cosmetic and pharmaceutical industries purposes. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Name: Octyl acetate).

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 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. Name: Octyl acetate

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

Effect of the Composition of Copolymers Based on Glycidyl Methacrylate and Fluoroalkyl Methacrylates on the Free Energy and Lyophilic Properties of the Modified Surface was written by Klimov, Viktor V.;Kolyaganova, Olga V.;Bryuzgin, Evgeny V.;Navrotsky, Alexander V.;Novakov, Ivan A.. And the article was included in Polymers (Basel, Switzerland) in 2022.SDS of cas: 3063-94-3 The following contents are mentioned in the article:

This study proposes to use reactive copolymers based on glycidyl methacrylate and fluoroalkyl methacrylates with a low fluorine content in the monomer unit as agents to reduce the surface free energy (SFE). This work reveals the effect of the structure and composition of copolymers on the SFE and water-repellent properties of these coatings. On a smooth surface, coatings based on copolymers of glycidyl methacrylate and fluoroalkyl methacrylates with fluorine atoms in the monomer unit ranging from three to seven are characterized by SFE values in the range from 25 to 13 mN/m, which is comparable to the values for polyhedral oligomeric silsesquioxanes and perfluoroalkyl acrylates. On textured aluminum surfaces, the obtained coatings provide time-stable superhydrophobic properties with contact angles up to 170° and sliding angles up to 2°. The possibility of using copolymers based on glycidyl methacrylate and fluoroalkyl methacrylates for the creation of self-cleaning polymer coatings is shown. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3SDS of cas: 3063-94-3).

1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3) 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. Polyesters are important plastics, with monomers linked by ester moieties. 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.SDS of cas: 3063-94-3

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

Antibacterial Mechanism of Multifunctional MXene Nanosheets: Domain Formation and Phase Transition in Lipid Bilayer was written by Lee, One-Sun;Madjet, Mohamed E.;Mahmoud, Khaled A.. And the article was included in Nano Letters in 2021.Computed Properties of C39H76NO8P The following contents are mentioned in the article:

MXenes, two-dimensional metal carbides or nitrides with multifunctional surfaces, are one of the most promising antibacterial nanoscale materials. However, their putative bactericidal mechanism is elusive. To study their bactericidal mechanism, we investigated the interaction between a MXene nanosheet and a model bacterial membrane by mol. dynamics simulations and found that an adsorbed MXene on a membrane surface induced a local phase transition in a domain where the fluidity of the phospholipid in this domain at room temperature was comparable with that of the gel phase. The domain also showed a denser and thinner phospholipid membrane structure than the peripheral phospholipids. By comparing it with our previous experiments of the bactericidal activity of MXenes, we proposed the leakage of intercellular mols. at the phase boundary defects as a possible bactericidal mechanism of MXenes that leads to cell lysis. This study provides a useful model for tailoring new bactericidal nanomaterials. This study involved multiple reactions and reactants, such as (2R,9Z)-1-(((2-Aminoethoxy)(hydroxy)phosphoryl)oxy)-3-(palmitoyloxy)propan-2-yl oleate (cas: 26662-94-2Computed Properties of C39H76NO8P).

(2R,9Z)-1-(((2-Aminoethoxy)(hydroxy)phosphoryl)oxy)-3-(palmitoyloxy)propan-2-yl oleate (cas: 26662-94-2) 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° 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. Computed Properties of C39H76NO8P

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

Comparative investigation on aroma profiles of five different mint (Mentha) species using a combined sensory, spectroscopic and chemometric study was written by Zhang, Jiguang;Li, Man;Zhang, Hongfei;Pang, Xueli. And the article was included in Food Chemistry in 2022.Formula: C10H20O2 The following contents are mentioned in the article:

Mint is a widely used aromatic plant, and the aroma varies among different species. The aroma of five mint species, Mentha citrata L. (MC), Mentha piperita L. (MPI), Mentha spicata L. (MSP), Mentha persicaria L. (MPE), and Mentha suaveolens L. (MSU), were comparatively studied on the sensorial and mol. level. Quant. descriptive anal. revealed that MC presented a pronounced lemon-like note, MSU is dominated by citrus and floral aromas, MPI has a prominent minty flavor, MSP and MPE have a similar scent, both of which are flavored with a spearmint-like note. Forty-one odorants with odor activity values (OAVs) ≥1 were characterized. Principal component anal. and orthogonal partial least squares discrimination anal. based on OAVs indicated that α-citral, menthofuran, isomenthone, menthol, carvone, and linalool were potential odor-active markers for five mint species discrimination. This study herein will provide guidance for mint resources utilization and also aid mint breeding with better flavor. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Formula: 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, including apples, durians, pears, bananas, pineapples, and strawberries. 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: C10H20O2

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